AnswersAlgebra IEquivalent Expressions

Equivalent Expressions — Quiz Answers

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1
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Which expression is equivalent to m n plus z ?

A
m z plus n
B
z plus nm
C
z plus m z
D
nm plus n
2
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Which expression is equivalent to 7 times x y ?

A
x times 7 y
B
7 x minus y
C
x y over 7
D
7 x plus y
3

Which expression is equivalent to x y times z ?

A
x times y z
B
2 z x y
C
open paren x plus y close paren plus z
D
x times open paren y plus z close paren
4

Which expression is equivalent to A plus open paren c plus 7 close paren ?

A
open paren c plus 7 close paren minus A
B
A minus open paren c plus 7 close paren
C
7 A c
D
open paren A plus c close paren plus 7
5

Which expression is equivalent to p q ?

A
p plus q
B
p over q
C
p minus q
D
q p
6

Which expressions are equivalent when m is equal to 1 and m is equal to 4 ?

A
3 m plus 4 and m plus 4 plus 2 m
B
5 m plus 3 and 4 m plus 2 plus 2 m
C
2 m plus 7 and 3 m minus 3 plus m
D
5 m minus 3 and 2 m plus 5 plus m
8

Which best proves why the expressions 4 times open paren x plus 3 close paren plus 2 x and 6 times open paren x plus 2 close paren must be equivalent expressions?

A
When x is equal to 5 , both expressions have a value of 42 .
B
When x is equal to 2 , both expressions have a value of 15 , and when x is equal to 6 , both expressions have a value of 39 .
C
When x is equal to 1 , both expressions have a value of 18 , and when x is equal to 8 , both expressions have a value of 60 .
D
When x is equal to 3 , both expressions have a value of 30 .
9

Maggie used the commutative property to write 4 fifths plus 6 point 9 y minus 8 as the equivalent expression 6 point 9 y plus 8 minus 4 fifths Did Maggie apply the commutative property correctly? Why or why not?

A
Yes, the terms with variables should be written first.
B
No, there should be two terms in parentheses.
C
No, some of the terms changed signs.
D
Yes, there are the same number of terms.

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