1.
The mathematical statement above is :
Correct Answer
E. A General Expression
Explanation
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.
2.
For the above simultaneous equations, do we 'solve' or 'evaluate'.
Correct Answer
A. Solve
Explanation
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."
3.
For the above expression, do we 'solve' or 'evaluate'.
Correct Answer
B. Evaluate
Explanation
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.
4.
The image above is :
Correct Answer
C. An Expression in words
Explanation
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."
5.
Using x as your variable, write an expression for the statement above (no spaces)
Correct Answer
x+5
5+x
Explanation
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.
6.
Write an expression for the statement above (no spaces)
Correct Answer
28-k
-k+28
Explanation
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.
7.
Write an equation for the statement above using x as your variable (no spaces)
Correct Answer
x+7=34
7+x=34
Explanation
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.
8.
The statement above is :
Correct Answer
D. An Equation in words
Explanation
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.
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-y
Explanation
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.
12.
Write an expression for y
Correct Answer
-x-5
y=-x-5
-5-x
y=-5-x
Explanation
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.