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n200080 [17]
3 years ago
7

Someone help me please. I need my work submitted by 4:00

Mathematics
1 answer:
Ugo [173]3 years ago
5 0

Answer:

B.\ (-1.4z+0.4)\times 40  \\\\D.\ (8z-4)(-7)

Step-by-step explanation:

Given the expression:

-56z+28

#We introduce a bracket and a common divisor:

Since 7 is a divisor of both numbers, we rewrite the expression as:

-56z+58=-7(8z-4)\\\\=(8z-4)(-7)

#We then introduce a second common divisor, 40:

-56z+28=\frac{1}{40}\times-56z+28\times \frac{1}{40}\\\\=40(-1.4z+0.7)

Hence, the expression can be rewritten as 40(-1.4z+0.4) and (8z-4)(-7)

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