AnswersGrade 7 MathematicsExpanding Expressions

Expanding Expressions — Quiz Answers

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1
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Which expression is equivalent to 5 x plus 10 y minus 15 ?

A
5 times open paren x plus 2 y minus 3 close paren
B
5 times open paren x plus 5 y minus 10 close paren
C
5 times open paren x minus 2 y minus 3 close paren
D
5 times open paren x plus 2 y minus 15 close paren
2
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Which expression is equivalent to negative 3 times open paren 4 x minus 0 point 5 0 close paren ?

A
negative 12 x plus 1 point 5 0
B
negative 12 x minus 3 point 5 0
C
negative 12 x minus 1 point 5 0
D
negative 12 x minus 2 point 5 0
4

When 0 point 3 times open paren 4 x minus 8 close paren minus 0 point 5 times open paren negative 2 point 4 x plus 4 close paren is simplified, what is the resulting expression?

A
1 point 2 x minus 2 point 4 plus 1 point 2 x minus 2
B
2 point 4 x minus 0 point 4
C
2 point 4 x minus 4 point 4
D
negative 4 point 4
5

Which expression is equivalent to 1 fifth times open paren 150 x minus 80 y plus 50 minus 50 x minus 25 y plus 20 close paren ?

A
20 x minus 21 y plus 14
B
20 x minus 11 y plus 6
C
20 x plus 11 y plus 14
D
20 x plus 21 y plus 6
6

When 4 times open paren 0 point 5 x plus 2 point 5 y minus 0 point 7 x minus 1 point 3 y plus 4 close paren is simplified, what is the resulting expression?

A
negative 0 point 8 x plus 4 point 8 y plus 16
B
0 point 8 x minus 4 point 8 y plus 16
C
negative 0 point 8 x minus 4 point 8 y plus 4
D
0 point 8 x plus 4 point 8 y plus 4
8

Which pair shows equivalent expressions?

A
2 times open paren 2 fifths x plus 4 close paren is equal to 4 fifths x plus 2
B
2 times open paren 2 fifths x plus 4 close paren is equal to 2 and 2 fifths x plus 8
C
2 times open paren 2 fifths x plus 2 close paren is equal to 2 and 2 fifths x plus 1
D
2 times open paren 2 fifths x plus 2 close paren is equal to 4 fifths x plus 4
9

Which property can be used to expand the expression negative 2 times open paren 3 fourths x plus 7 close paren ?

A
the associative property
B
the additive identity property
C
the commutative property
D
the distributive property
10

Which pair shows equivalent expressions?

A
negative 2 x minus 10 is equal to negative 2 times open paren x plus 5 close paren
B
negative 2 times open paren x plus 5 close paren is equal to 2 x minus 10
C
2 x plus 10 is equal to negative 2 times open paren x minus 5 close paren
D
negative 2 times open paren x minus 5 close paren is equal to negative 2 x minus 10

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