Tes Matematika Sma/K

Explanation
The correct answer is 160 kantong. To find the number of plastic bags, we need to divide the total weight of sugar purchased (40 kg) by the weight of each bag (1/4 kg). 40 kg divided by 1/4 kg equals 160 bags.

Explanation
The given expression involves addition and multiplication of mixed fractions. To solve the expression, we first need to simplify the mixed fractions. 2 1/4 can be written as 9/4 and 1 1/2 can be written as 3/2. Multiplying these fractions gives us 27/8. Next, we need to multiply this result by 2 2/3, which can be written as 8/3. Multiplying 27/8 by 8/3 gives us 27/3, which simplifies to 9. Finally, adding 9 to the original fraction 2 1/4 gives us 11 1/4, which can be simplified to 10. Therefore, the answer is 10.

Explanation
The number of bricks in each stack follows a pattern where each stack has 2 more bricks than the stack above it. Since there are 15 stacks, the bottom stack will have 2*(15-1) = 28 more bricks than the top stack. Adding this to the number of bricks in the top stack (8), we get 8 + 28 = 36 bricks in the bottom stack.

Explanation
Dari 40 siswa di kelas 3A, 15 orang menyukai matematika dan bahasa Inggris. Jadi, jumlah siswa yang menyukai matematika atau bahasa Inggris adalah 19 + 24 - 15 = 28 orang. Oleh karena itu, jumlah siswa yang tidak menyukai matematika maupun bahasa Inggris adalah 40 - 28 = 12 orang.

Explanation
With a capital of Rp 25,000.00, the profit obtained would be Rp 1,500.00.

Explanation
To find the value of 4x - 3y, we need to solve the given system of equations. By multiplying the first equation by 2 and the second equation by 3, we can eliminate the y variable. This gives us 6x + 6y = 6 and 6x - 12y = 42. Subtracting these two equations, we get 18y = -36, which means y = -2. Substituting this value of y into the first equation, we can solve for x and find that x = 1. Finally, substituting these values into 4x - 3y, we get 4(1) - 3(-2) = 4 + 6 = 10. Therefore, the correct answer is 10.

Explanation
Let's assume the price of one shirt is x and the price of one t-shirt is y.
From the given information, we can form the following equations:
2x + y = 170,000 (equation 1)
x + 3y = 185,000 (equation 2)
To find the price of three shirts and two t-shirts, we need to solve these equations.
Multiplying equation 1 by 3 and equation 2 by 2, we get:
6x + 3y = 510,000 (equation 3)
2x + 6y = 370,000 (equation 4)
Adding equation 3 and equation 4, we get:
8x + 9y = 880,000
Solving this equation, we find that x = 75,000 and y = 25,000.
Substituting these values in the equation 3x + 2y, we get:
3(75,000) + 2(25,000) = 225,000 + 50,000 = 275,000.
Therefore, the price of three shirts and two t-shirts is Rp 275,000.

Explanation
The angle BAC is 55°.

Explanation
The given answer of 19 cm is the correct answer for the question. It is the measurement of the perimeter or the total distance around the shape mentioned in the question.

Explanation
The given answer (ML)² = (MK)² + (KL)² is the correct statement of the Pythagorean theorem. The Pythagorean theorem states that in a right triangle, the square of the length of the hypotenuse (c) is equal to the sum of the squares of the lengths of the other two sides (a and b). In this case, (ML)² represents the square of one side of the triangle, (MK)² represents the square of another side, and (KL)² represents the square of the hypotenuse. Therefore, the given answer correctly represents the Pythagorean theorem.