Expressions And Substitution! Math Trivia Quiz
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Questions and Answers
- 1.
The mathematical statement above is :
- A.
Expression for y
- B.
A Variable
- C.
A Linear Equation
- D.
An Evaluation
- E.
A General Expression
Correct Answer
E. A General ExpressionExplanation
The given mathematical statement is a general expression. This means that it represents a mathematical relationship or formula that can be applied to various situations or values. It does not specify any particular variables or values, but rather provides a general representation of the relationship between variables. This allows for flexibility and the ability to use the expression in different contexts.Rate this question:
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- 2.
For the above simultaneous equations, do we 'solve' or 'evaluate'.
- A.
Solve
- B.
Evaluate
Correct Answer
A. SolveExplanation
The term "solve" refers to finding the values of the variables that satisfy both equations simultaneously. In this context, it means finding the values of x and y that make both equations true. "Evaluate," on the other hand, typically refers to finding the numerical value of an expression. Since we are dealing with equations, the correct term to use is "solve."Rate this question:
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- 3.
For the above expression, do we 'solve' or 'evaluate'.
- A.
Solve
- B.
Evaluate
Correct Answer
B. EvaluateExplanation
The correct answer is evaluate. In mathematics, when we are asked to "solve" an expression or equation, we are typically looking for the value of the unknown variable(s) that make the equation true. However, when we are asked to "evaluate" an expression, we are simply asked to calculate or find the numerical value of the given expression. In this case, we are not looking for a solution to an equation, but rather to find the value of the expression.Rate this question:
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- 4.
The image above is :
- A.
An Expression for x
- B.
A Variable
- C.
An Expression in words
- D.
An Equation in words
- E.
An Expression
Correct Answer
C. An Expression in wordsExplanation
The image above represents a mathematical expression written in words. It is not a variable or an equation, as it does not contain an equal sign. Instead, it describes a mathematical relationship or operation using words rather than symbols. Therefore, the correct answer is "an Expression in words."Rate this question:
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- 5.
Using x as your variable, write an expression for the statement above (no spaces)
Correct Answer
x+5
5+xExplanation
The expression x+5 and 5+x are equivalent. They both represent adding the value of x to 5. The order of the terms does not affect the result in addition, so both expressions are correct.Rate this question:
- 6.
Write an expression for the statement above (no spaces)
Correct Answer
28-k
-k+28Explanation
The expression given is 28-k and -k+28. Both expressions are equivalent and represent the same mathematical calculation. They both involve subtracting the value of k from 28. The order of the terms can be interchanged without affecting the result.Rate this question:
- 7.
Write an equation for the statement above using x as your variable (no spaces)
Correct Answer
x+7=34
7+x=34Explanation
The equation x+7=34 is equivalent to 7+x=34. Both equations represent the same statement, which is that the sum of x and 7 is equal to 34. The order of the terms in the equation does not affect the validity of the statement.Rate this question:
- 8.
The statement above is :
- A.
An Expression for x
- B.
A Variable
- C.
An Expression in words
- D.
An Equation in words
- E.
An Expression
Correct Answer
D. An Equation in wordsExplanation
The statement above is an equation in words because it represents a mathematical relationship between two quantities. An equation typically consists of an equal sign and expressions on both sides, which is the case in this statement. It describes a verbal representation of a mathematical equation rather than a numerical or algebraic expression.Rate this question:
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- 9.
Evaluate this expression
Correct Answer
12 - 10.
Solve
Correct Answer
8 - 11.
Write an expression for x
Correct Answer
-y-5
x=-y-5
-5-y
x=-5-yExplanation
The given expressions represent different ways to express the value of x. In each expression, x is equal to the negative value of y minus 5. The expressions -y-5 and x=-y-5 are equivalent and represent the same value for x. Similarly, the expressions -5-y and x=-5-y are also equivalent and represent the same value for x.Rate this question:
- 12.
Write an expression for y
Correct Answer
-x-5
y=-x-5
-5-x
y=-5-xExplanation
The given expressions represent different ways to express the value of y. In each expression, y is equal to the negative of x minus 5. The negative sign indicates that x is being subtracted from 5. Therefore, the correct answer is any of the given expressions: -x-5, y=-x-5, -5-x, or y=-5-x.Rate this question:
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Current Version
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Jan 15, 2025Quiz Edited by
ProProfs Editorial Team -
Mar 01, 2015Quiz Created by
Anthony Nunan
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