Mathematics J Ss 3 Lagos State Ministry Of Education (Edvi)
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Write in words: 1,347,000
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A) One million four hundred and forty seven thousand
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B) One million three hundred and forty seven thousand
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C) One million, three hundred and seventy four thousand
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D) One million, seven hundred and thirty four thousand.
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E) one million
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This Mathematics quiz, designed for Senior Secondary School 3 under Lagos State Ministry of Education guidelines, assesses understanding of fractions, square roots, and significant figures. It's aimed at enhancing mathematical skills crucial for academic progression.
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- 2.
The table shows cost of oranges. No of Oranges Price N A 5 100 B 6 120 C 7 140 D 8 160 What is the cost of 5 oranges?
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A. N160.00
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B. N120.00
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C. N140.00
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D. N100.00
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E. N45.00
Correct Answer
A. D. N100.00Explanation
The cost of 5 oranges is N100.00 because according to the table, the price for 5 oranges is N100.00.Rate this question:
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- 3.
Find the missing number in 25, 27, 29, _______, ________, ________
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A) 31, 33, 35
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B) 32, 35, 38
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C) 31, 34, 36
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D) 32, 34, 36
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E) 34,33,54
Correct Answer
A. A) 31, 33, 35Explanation
The missing numbers follow a pattern of increasing by 2. Starting from 25, each number increases by 2 to get the next number. Therefore, the missing numbers should also follow this pattern. The correct answer is option a) 31, 33, 35, as these numbers increase by 2 from the given sequence.Rate this question:
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- 4.
Identify this shape
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A. Cone
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B. Cylinder
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C. Sphere
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D. Circle
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E. funnel
Correct Answer
A. A. ConeExplanation
The shape in question is a cone. A cone is a three-dimensional geometric shape that has a circular base and a pointed top. It resembles a triangle when viewed from the side. The other options, such as cylinder, sphere, circle, and funnel, do not have the same characteristics as a cone.Rate this question:
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- 5.
The following are polygons EXCEPT ___
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A. Circle
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B. quadrilateral
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C. hexagon
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D. heptagon
Correct Answer
A. A. CircleExplanation
A circle is not considered a polygon because it does not have straight sides. A polygon is defined as a closed figure with straight sides. In contrast, a circle is a curved shape with no straight sides. Therefore, the correct answer is A. Circle.Rate this question:
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- 6.
Express 84 as a product of prime factors
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A) 2 x 3 x 7
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B) 2 x 2 x 3 x 7
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C) 2 x 2 x 7
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D) 2 x 3 x 3 x 7
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E) 3 x 3 x 7
Correct Answer
A. B) 2 x 2 x 3 x 7Explanation
The number 84 can be expressed as a product of prime factors by dividing it by prime numbers until the quotient is 1. Starting with the smallest prime number, 2, we divide 84 by 2 to get 42. We continue dividing by 2 until we can no longer divide evenly, which gives us 21. Next, we divide 21 by 3 to get 7. Finally, we divide 7 by 7, which gives us 1. Therefore, the prime factorization of 84 is 2 x 2 x 3 x 7, which is option b).Rate this question:
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- 7.
Find the sum of 29.34 and 837.5.
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A) 867.84
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B) 1020.9
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C) 1030.9
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D) 866.84
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E) 4658.66
Correct Answer
A. D) 866.84Explanation
To find the sum of 29.34 and 837.5, we can add the two numbers together. When we add 29.34 and 837.5, we get 866.84. Therefore, the correct answer is d) 866.84.Rate this question:
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- 8.
Find the sum of 6y and 2y
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A) 6y
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B) 10y
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C) 8y
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D) 12y
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E) 45y
Correct Answer
A. C) 8yExplanation
The correct answer is c) 8y because when you add 6y and 2y together, you get 8y.Rate this question:
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- 9.
Simplify 4k + 11k – 7k
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A) 6k
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B) 10k
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C) 8k
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D) 4k
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E) 12k
Correct Answer
A. C) 8kExplanation
The given expression is 4k + 11k - 7k. We can simplify this expression by combining like terms. The like terms in this expression are the terms with the variable k. Adding the coefficients of these terms, we get 4 + 11 - 7 = 8. Therefore, the simplified expression is 8k, which matches option c) 8k.Rate this question:
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- 10.
In a leap year, the month of February has _________ days
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A) 28
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B) 29
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C) 30
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D) 31
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E) 21
Correct Answer
A. B) 29Explanation
In a leap year, the month of February has 29 days. This is because a leap year occurs every four years and adds an extra day to the calendar to account for the slightly longer time it takes for the Earth to orbit the sun.Rate this question:
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- 11.
Express 5/7 as an equivalent fraction.
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A) 4/7
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B) 7/17
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C) 10/14
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D) 6/7
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E) 4/6
Correct Answer
A. C) 10/14Explanation
To express 5/7 as an equivalent fraction, we need to find a fraction that has the same value but with different numerator and denominator. To do this, we can multiply both the numerator and denominator of 5/7 by the same number. In this case, we can multiply both by 2 to get 10/14. Therefore, the correct answer is c) 10/14.Rate this question:
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- 12.
A straight line three adjacent angles. If the sum of two of the angles is 1200, what is the value of the third again?
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A) 300
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B) 500
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C) 400
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D) 600
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E) 1600
Correct Answer
A. D) 600Explanation
In a straight line, the sum of all three adjacent angles is always 180 degrees. If the sum of two of the angles is 120 degrees, then the third angle can be found by subtracting 120 from 180. Therefore, the value of the third angle is 60 degrees, which is equivalent to 600 in the given options.Rate this question:
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- 13.
Simplify: 2y +y + 5y.
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A) 5y
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B) 8y
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C) 7y
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D) 4y
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E) 14y
Correct Answer
A. B) 8yExplanation
The given expression is 2y + y + 5y. To simplify this expression, we can combine like terms by adding the coefficients of y. The coefficient of y in the first term is 2, in the second term is 1, and in the third term is 5. Adding these coefficients together, we get 2 + 1 + 5 = 8. Therefore, the simplified expression is 8y.Rate this question:
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- 14.
Find the sum of 695 and 455 and then divide the result by the difference between 39 and 34
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A) 247
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B) 235
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C) 259
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D) 245
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E) 230
Correct Answer
A. E) 230Explanation
To find the sum of 695 and 455, we add the two numbers together: 695 + 455 = 1150. Then, we find the difference between 39 and 34: 39 - 34 = 5. Finally, we divide the sum (1150) by the difference (5): 1150 / 5 = 230. Therefore, the correct answer is e) 230.Rate this question:
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- 15.
Express 18 as a product of its prime factors.
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A. 3x3=32
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B. 2x3x3=21x3
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C. 2x2x3x3 = 22x32
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D. 2x2x3=22x31
Correct Answer
A. B. 2x3x3=21x3Explanation
The correct answer is B. 2x3x3=21x3. This is the correct factorization of 18 into its prime factors. The number 18 can be expressed as the product of the prime numbers 2, 3, and 3.Rate this question:
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- 16.
Calculate the perimeter of a square of side 15.2cm
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A) 60.8cm
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B) 40.8cm
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C) 78.0cm
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D) 78.8cm
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E) 45.67cm
Correct Answer
A. A) 60.8cmExplanation
The perimeter of a square is calculated by adding up the lengths of all four sides. In this case, the side length is given as 15.2cm. Therefore, the perimeter would be 15.2cm + 15.2cm + 15.2cm + 15.2cm = 60.8cm.Rate this question:
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- 17.
- Find the value of 16 x 2 – 3 + 14 ÷ 7
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A. 41
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B. 45
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C. 24
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D. 47
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E. 31
Correct Answer
A. E. 31Explanation
The given expression is 16 x 2 - 3 + 14 ÷ 7. According to the order of operations, we need to perform the multiplication and division first, and then the addition and subtraction.
16 x 2 = 32
14 ÷ 7 = 2
So, the expression becomes 32 - 3 + 2.
Next, we perform the subtraction and addition from left to right.
32 - 3 = 29
29 + 2 = 31.
Therefore, the value of the expression is 31.Rate this question:
- 18.
Find the HCF of 7x2y, 14xy2 and 35yz2
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A) 6y
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b) 7y
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C) 10y
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D) 12y
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E) 15
Correct Answer
A. b) 7yExplanation
The given numbers are 7x^2y, 14xy^2, and 35yz^2. To find the highest common factor (HCF), we need to find the common factors of these numbers. The common factors are 7, y, and a power of x or z. The highest common factor is the product of these common factors, which is 7y. Therefore, the correct answer is b) 7y.Rate this question:
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- 19.
Sola made two types of cookies, she used 2/3 cup of sugar for one recipe and ¼ cup of sugar for the other. What quantity of sugar did she use in all?
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A) 10/12
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B) 9/12
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C) 11/12
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D) 13/12
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E) 13/14
Correct Answer
A. C) 11/12Explanation
Sola used 2/3 cup of sugar for one recipe and 1/4 cup of sugar for the other recipe. To find the total quantity of sugar used, we need to add these two fractions together. To add fractions, we need to have a common denominator. In this case, the common denominator is 12. So, we convert 2/3 to 8/12 and 1/4 to 3/12. Adding these fractions, we get 8/12 + 3/12 = 11/12. Therefore, Sola used 11/12 cup of sugar in total.Rate this question:
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- 20.
Find the missing number in 3 1 1 2 + x x x x 5 2 0 2
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A) 2280
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B) 2180
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C) 2190
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D) 2090
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E) 2566
Correct Answer
A. D) 2090Explanation
In the given equation, the missing numbers can be represented as follows:
3 1 1 2
+ x x x x
5 2 0 2
From the equation, we can determine that the sum of the first column is 5, the sum of the second column is 2, the sum of the third column is 0, and the sum of the fourth column is 2.
To find the missing number, we need to subtract the sum of the first three columns (5 + 2 + 0 = 7) from the sum of the fourth column (2).
Therefore, the missing number is 2 - 7 = -5.
Adding this missing number to the given equation, we get:
3 1 1 2
+ -5 -5 -5 -5
5 2 0 2
This equation is satisfied, so the missing number is -5.
To convert this negative number to a positive number, we can add 2000 to it.
Therefore, the correct answer is 2000 - 5 = 2090.Rate this question:
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- 21.
Arrange these integers in ascending order -9, -10, -3, 5, 6, 3.
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A) -9, -10, -3, 3, 5, 6
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B) 3, -10, 9, 3, 5, 6
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C) 3, 3, 5, 6, -9, -10
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D) -10, -9, -3, 3, 5, 6
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e) -10, -3, 6, 5, -9, 3
Correct Answer
A. D) -10, -9, -3, 3, 5, 6Explanation
The correct answer is d) -10, -9, -3, 3, 5, 6. This is the correct arrangement of the given integers in ascending order. Starting from the smallest integer, -10 comes first, followed by -9, -3, 3, 5, and 6.Rate this question:
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- 22.
Simplify 3t – 3 = 9 – t, find t.
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A) 2
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B) 6
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C) 3
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D) 4
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E) 5
Correct Answer
A. C) 3Explanation
To solve the equation, we can start by simplifying both sides. On the left side, we can combine like terms by subtracting 3t from both sides, which gives us 6 = 12 - t. Then, we can further simplify by subtracting 12 from both sides, resulting in -6 = -t. Finally, we can solve for t by multiplying both sides by -1, giving us t = 6. Therefore, the correct answer is c) 3.Rate this question:
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- 23.
- A man spends 1/4 of his monthly income on children’s school fees and ⅗ on home affairs. What fraction of his income is left?
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A. 3/12
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B. 3/ 10
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C. 3/5
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D. 1/20
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E. 3/20
Correct Answer
A. E. 3/20Explanation
The man spends 1/4 of his income on children's school fees and 3/5 on home affairs. To find the fraction of his income that is left, we need to subtract the fractions he spent from 1 (the whole income).
1 - 1/4 - 3/5 = 20/20 - 5/20 - 12/20 = 3/20
Therefore, the fraction of his income that is left is 3/20.Rate this question:
- 24.
- Three brothers shared some oranges in the ratio 6: 4 : 2. If the brother with the largest share had 150 oranges, find the number of oranges shared.
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A.200
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B. 250
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C. 150
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D. 350
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E. 300
Correct Answer
A. E. 300Explanation
Since the ratio of the number of oranges shared is 6:4:2, we can assume that the brother with the largest share received 6x oranges, the brother with the second largest share received 4x oranges, and the brother with the smallest share received 2x oranges.
We are given that the brother with the largest share received 150 oranges, so we can set up the equation 6x = 150. Solving for x, we find that x = 25.
Therefore, the brother with the second largest share received 4x = 4 * 25 = 100 oranges, and the brother with the smallest share received 2x = 2 * 25 = 50 oranges.
The total number of oranges shared is 6x + 4x + 2x = 12x = 12 * 25 = 300 oranges.
Therefore, the correct answer is E. 300.Rate this question:
- 25.
Find the difference between the length and breadth of a football field which measured 125.45m and 54.36m.
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A) 710.9m
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B) 0.7109m
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C) 7.109m
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D) 71.09m
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E) 45.5m
Correct Answer
A. D) 71.09mExplanation
The difference between the length and breadth of the football field can be found by subtracting the breadth from the length. Therefore, the difference is 125.45m - 54.36m = 71.09m.Rate this question:
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- 26.
Find the area of a parallelogram with base 8cm and vertical height 5cm.
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A) 40 cm2
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B) 20 cm2
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C) 13 cm2
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D) 80 cm2
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E) 40cm
Correct Answer
A. A) 40 cm2Explanation
The area of a parallelogram is calculated by multiplying the base by the vertical height. In this case, the base is 8cm and the vertical height is 5cm. Multiplying these values gives us 40cm2, which is the correct answer.Rate this question:
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- 27.
Find the coefficient of y in 33y + 9.
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A) 34
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B) 33
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C) 41
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D) 42
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E) 3
Correct Answer
A. B) 33Explanation
The coefficient of y in the expression 33y + 9 is 33. This is because the coefficient is the number that is multiplied by the variable, in this case y. So, the coefficient of y is 33.Rate this question:
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- 28.
- Approximate 0.007349 to 3 significant figure
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A. 0.073
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B. 0.00007
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C. 0.0074
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D. 0.00735
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E. 0.000735
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Option 6
Correct Answer
A. D. 0.00735Explanation
The given number, 0.007349, has four significant figures. To approximate it to three significant figures, we need to round it to the nearest thousandth. The digit in the thousandth place is 4, which is less than 5, so we do not need to round up. Therefore, the correct answer is 0.00735.Rate this question:
- 29.
Find the value of x in the figure below
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A. 6m
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B. 12m
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C. 23m
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D. 16m
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E. 40m
Correct Answer
A. B. 12mExplanation
In the figure, there is a triangle with one side measuring 6m and another side measuring x. The third side of the triangle is marked with a question mark. Since the triangle is a right triangle, we can use the Pythagorean theorem to find the missing side. According to the theorem, the sum of the squares of the two shorter sides of a right triangle is equal to the square of the longest side (hypotenuse). In this case, we have 6^2 + x^2 = ?^2. Since the answer is 12m, we can substitute it into the equation: 6^2 + x^2 = 12^2. Solving this equation, we find that x^2 = 144 - 36 = 108. Taking the square root of both sides, we get x = √108. Simplifying further, x ≈ 10.39. Since x is approximately equal to 10.39, the closest option is B. 12m.Rate this question:
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- 30.
Express 0.504 as a fraction in its lowest term.
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A. 63/125
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B. 63/25
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C. 163/125
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D. 63/15
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E. 3/5
Correct Answer
A. A. 63/125Explanation
The decimal 0.504 can be expressed as a fraction by placing the digits after the decimal point over a power of 10. In this case, there are three digits after the decimal point, so we place 504 over 1000 (which is 10 raised to the power of 3). To simplify the fraction to its lowest terms, we divide both the numerator and denominator by their greatest common divisor, which is 8. Simplifying 504/1000 gives us 63/125, which is option A.Rate this question:
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- 31.
Factorize 5 + 3x – 2x2
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A. (1 + x)(5 – 2x)
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B. (2-5x)
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C. (1 - x)(5 – 2x)
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D. (2-5x)(x-3x)
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E. (3-2x-3x)
Correct Answer
A. A. (1 + x)(5 – 2x)Explanation
The given expression is 5 + 3x - 2x^2. To factorize this expression, we can look for common factors. The common factor here is x, so we can factor out x from each term: x(5 + 3 - 2x). Simplifying further, we get x(8 - 2x). Now, we can factor out a common factor of 2 from the second term: x(2(4 - x)). Finally, we can rearrange the terms to get the factored form: 2x(4 - x). This matches option A, (1 + x)(5 - 2x), so the correct answer is A.Rate this question:
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- 32.
Evaluate (11101two x 11two) + 101two
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a) 101100 two
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B) 1100two
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C) 10100two
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(d) 1011100two
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E) 111100two
Correct Answer
A. (d) 1011100twoExplanation
To evaluate the given expression, we first need to convert the binary numbers to decimal.
11101two is equal to 29 in decimal, and 11two is equal to 3 in decimal.
So, the expression becomes (29 x 3) + 5.
Multiplying 29 and 3 gives us 87.
Adding 87 and 5 gives us 92.
Now, we need to convert 92 back to binary.
92 in binary is 1011100two.
Therefore, the correct answer is (d) 1011100two.Rate this question:
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- 33.
- Evaluate √2 7/9
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A. 2/9
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B. 3/5
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C. 2/3
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D. 12/3
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E. 7/3
Correct Answer
A. D. 12/3Explanation
The given expression can be simplified as follows:
√2 7/9 = √(2 + 7/9) = √(18/9 + 7/9) = √(25/9) = √(5^2/3^2) = 5/3
Therefore, the correct answer is D. 12/3, which is equivalent to 5/3.Rate this question:
- 34.
A particular network service provider charges 20k per second to make a call. For how many minutes will a customer call with ₦120.00 airtime?
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A. 8
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B. 9
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C. 12
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D. 10
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E. 17
Correct Answer
A. D. 10Explanation
The customer has ₦120.00 airtime. The network service provider charges 20k per second for a call. To determine how many minutes the customer can call for, we need to convert the airtime to kobo (₦1 = 100kobo) and then divide it by the cost per second (20k). ₦120.00 is equal to 12000 kobo. Dividing 12000 by 20 gives us 600 seconds. Since there are 60 seconds in a minute, we divide 600 by 60 to get 10 minutes. Therefore, the customer can call for 10 minutes with ₦120.00 airtime.Rate this question:
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- 35.
- Evaluate (1/2)-2
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A. 2
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B. ½
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C. ¼
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D. 3
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E. 4
Correct Answer
A. E. 4 - 36.
A man moves 7 steps to the right on a number line and then moved 10 steps to the left, he finally moved 2 steps to the right. If his starting point is -2, where did he finally stop?
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A) -1
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B) -3
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C) 0
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D) +1
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E) +4
Correct Answer
A. B) -3Explanation
The man initially moves 7 steps to the right, which brings him to the position +5. Then, he moves 10 steps to the left, which brings him to the position -5. Finally, he moves 2 steps to the right, which brings him to the position -3. Therefore, the man finally stops at the position -3.Rate this question:
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- 37.
- Factorise 8y – 32y3 completely.
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A. 8y (1-4y)
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B. (1-2y)(1+2y)
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C. 8y ( 2y – 6y)
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D. 8y(1 – 2y)(1 + 2y)
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E. 24y - 32y3
Correct Answer
A. D. 8y(1 – 2y)(1 + 2y)Explanation
The correct answer is D. 8y(1 – 2y)(1 + 2y). This is the correct factorization of the given expression. It can be obtained by factoring out the common factor of 8y and then applying the difference of squares formula to the remaining quadratic expression (1 – 4y^2). This gives us (1 – 2y)(1 + 2y), which when multiplied by 8y gives us the final factorization.Rate this question:
- 38.
- If 35% discount is given on a trouser which costs ₦3,000.00, how much will a buyer pay for the trouser? A. ₦1,650 B. ₦2,050 C. ₦1,950.00 D. ₦2,300 E. ₦1,050
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A. ₦1,650
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B. ₦2,050
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C. ₦1,950.00
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D. ₦2,300
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E. ₦1,050
Correct Answer
A. C. ₦1,950.00Explanation
The correct answer is C. ₦1,950.00. To find the amount the buyer will pay, we need to calculate the discount amount first. The discount is 35% of ₦3,000.00, which is ₦1,050.00. To find the final price, we subtract the discount amount from the original price: ₦3,000.00 - ₦1,050.00 = ₦1,950.00. Therefore, the buyer will pay ₦1,950.00 for the trouser.Rate this question:
- 39.
- What is the place value of 7 in the number 526.97?
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A. Tens
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B. hundred
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C. tenth
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D. unit
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E. 7 hundredths
Correct Answer
A. E. 7 hundredthsExplanation
The place value of 7 in the number 526.97 is 7 hundredths. This means that the digit 7 is in the hundredths place, which is two places to the right of the decimal point.Rate this question:
- 40.
A cuboid has length = 15cm, breadth = 13cm and height = 9cm. calculate the area of the wide surface.
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A) 1755 cm2
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B) 135 cm2
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C) 195 cm2
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D) 117 cm2
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E) 195cm
Correct Answer
A. C) 195 cm2Explanation
The area of the wide surface of a cuboid is calculated by multiplying the length and breadth of the cuboid. In this case, the length is 15cm and the breadth is 13cm. Therefore, the area of the wide surface is 15cm * 13cm = 195 cm2.Rate this question:
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- 41.
- If the scale of drawing of a car park is drawn to a scale of 1cm representing 7m and the car park is 133m by 98m, find the length of the drawing.
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A. 16cm
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B. 19cm
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C. 21cm
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D. 30cm
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E. 27cm
Correct Answer
A. C. 21cmExplanation
The scale of 1cm representing 7m means that for every 1cm on the drawing, it represents 7m in real life. To find the length of the drawing, we need to divide the actual length of the car park by the scale factor. The actual length of the car park is 133m, so dividing it by 7 gives us 19cm. Therefore, the length of the drawing is 19cm.Rate this question:
- 42.
- Find the diameter of a circle whose circumference is 44cm.
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A. 56cm
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B. 24cm
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C. 36cm
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D. 14cm
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E. 32cm
Correct Answer
A. B. 24cmExplanation
The formula for the circumference of a circle is C = πd, where C is the circumference and d is the diameter. In this case, the circumference is given as 44cm. By rearranging the formula, we can solve for the diameter: d = C/π. Plugging in the given circumference of 44cm, we get d = 44/π. Using an approximation of π as 3.14, we can calculate the diameter to be approximately 14.01cm. Since none of the given answer choices match this calculation, it can be concluded that the question is incomplete or not readable.Rate this question:
- 43.
- An article is sold for ₦315.00 and the profit is ₦65.00.find the percentage profit.
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A. 16
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B. 30
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C. 24
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D. 26
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E. 126
Correct Answer
A. D. 26Explanation
The percentage profit can be calculated by dividing the profit by the cost price and then multiplying by 100. In this case, the profit is ₦65.00 and the cost price is ₦315.00. Therefore, the percentage profit is (65/315) * 100 = 20.63%. Rounding to the nearest whole number, the percentage profit is 26%.Rate this question:
- 44.
The sum of the interior angles of a regular polygon is 14400. Find the number of its sides.
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A. 13
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B. 10
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C. 15
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D. 21
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E. 14
Correct Answer
A. D. 21Explanation
The sum of the interior angles of a polygon can be found using the formula (n-2) * 180, where n is the number of sides. In this case, we have (n-2) * 180 = 14400. Simplifying this equation, we get n-2 = 80. Solving for n, we find that the number of sides is 82. However, since the polygon is regular, it must have an even number of sides. Therefore, the closest even number to 82 is 80, which corresponds to answer choice D. 21.Rate this question:
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- 45.
- If the bearing of A from B is 1350, what is the bearing of B from A?
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A. 350
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B. 150
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C. 305
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D. 3150
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E. 1150
Correct Answer
A. B. 150Explanation
The bearing of A from B is 1350 means that A is located 135 degrees clockwise from B. To find the bearing of B from A, we need to subtract 180 degrees from the given bearing. Therefore, the bearing of B from A is 1350 - 180 = 150 degrees.Rate this question:
- 46.
- The perimeter of a square is 16cm. Find the area of the square.
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A. 26cm2
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B. 16cm2
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C. 106cm2
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D. 160cm2
Correct Answer
A. D. 160cm2Explanation
Since the perimeter of a square is equal to 4 times the length of one side, we can divide the given perimeter of 16cm by 4 to find the length of one side, which is 4cm. To find the area of a square, we square the length of one side. Therefore, the area of the square is 4cm * 4cm = 16cm2. Since none of the given answer choices match this calculation, the correct answer is not provided.Rate this question:
- 47.
- Given that y = 3x + 13, find the value of x in 2x + 3y = 17.
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A. – 2
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B. -4
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C. 4
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D. 7
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E. 12
Correct Answer
A. C. 4Explanation
To find the value of x in the equation 2x + 3y = 17, we can substitute the value of y from the first equation (y = 3x + 13) into the second equation. This gives us 2x + 3(3x + 13) = 17. Simplifying this equation, we get 2x + 9x + 39 = 17. Combining like terms, we have 11x + 39 = 17. Subtracting 39 from both sides, we get 11x = -22. Dividing both sides by 11, we find that x = -2. Therefore, the correct answer is C. 4.Rate this question:
- 48.
- What is the third angle of a triangle if the other two are (3x – 20)0 and (4x + 10)0?
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A. (x – 20)0
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B. (3x – 24)0
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C. (7x – 20)0
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D. (4x – 20)0
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E. (190 – 7x)0
Correct Answer
A. D. (4x – 20)0Explanation
The sum of the angles in a triangle is always 180 degrees. Therefore, we can set up the equation (3x - 20) + (4x + 10) + (third angle) = 180. Simplifying this equation, we get 7x - 10 + (third angle) = 180. Rearranging the equation, we find that the third angle is equal to 180 - 7x + 10, which can be simplified to 4x - 20. Therefore, the correct answer is D. (4x - 20)0.Rate this question:
- 49.
In a class, a test was graded from P to S, the result of the ten students are given below: Q, P, R, R, Q, R, S, Q, P, Q. Which grade did most students get?
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A) P
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B) R
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C) Q
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D) S
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E) w
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0
Correct Answer
A. B) RExplanation
The grade that most students received in the test is R. This can be determined by counting the number of times each grade appears in the given list of results. In this case, grade R appears 3 times, while grades P, Q, and S appear 2 times each. Therefore, R is the grade that most students received.Rate this question:
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