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Lana71 [14]
3 years ago
8

Which expressions are equivalent to -56z+28 ​ A 1/2*(-28z+14) B (-1.4z+0.7)\* 40 C (14-7z)*(-4) D (8z-4)*(-7) E-2(-28z-14)

Mathematics
1 answer:
Degger [83]3 years ago
5 0

Answer:

D (8z-4)*(-7)

Step-by-step explanation:

Given:

-56z+28

D (8z-4)*(-7)

-56z+28

Therefore, option D is the equivalent expression

Finding the equivalent expression by solving each option and eliminating the wrong option

​A 1/2*(-28z+14)

=-28z+14/2

=-14z+7

B (-1.4z+0.7) /* 40

Two signs ( division and multiplication)

Using multiplication,we have

-56z+28

Using division, we have

0.035z + 0.0175

C (14-7z)*(-4)

-56+28z

D (8z-4)*(-7)

-56z+28

E -2(-28z-14)

56z+28

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3 0
3 years ago
200z + 50 = 8000 solve this problem
kramer

Answer:

39.75

Step-by-step explanation:

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200z + 50 - 50 = 8000 - 50

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3 years ago
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3 years ago
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Answer:

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3 years ago
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