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Veronika [31]
2 years ago
7

Please help me, please

Mathematics
2 answers:
LiRa [457]2 years ago
8 0
Answer: D: -2
explanation:
1. divide fractions inside brackets by multiplying by the reciprocal
1/4 • 4/7
= 4/28
2. multiply 4/28 by 7/5
= 28/140 which can be reduced to 1/5
3. multiply by -10
= 1/5 • -10
= -2
Svetlanka [38]2 years ago
5 0

Answer:

-2

Step-by-step explanation:

7/5(1/4 divide 7/4) (-10)

Multiply the reciprocal of that fraction

7/5x(1/4x4/7)x(-10)

four and four cancels out

7/5x1/7x(-10)

multiplying a positive and a negative equals a negative

-7/5x1/7x10

seven cancels out and u get

-1/5x10

divide 5 both sides and u get

-2

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3 years ago
The number 56 can be written as 2to the power of m x n, where m and n are prime numbers.
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9514 1404 393

Answer:

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Step-by-step explanation:

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__

5. It's all about scale factors. One way to work this problem is to write all of the numbers in terms of the numbers of the original "given."

a) 0.724 × 2.8 = (724×10^-3) × (28×10^-1) = 20272×10^-4

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b) 202.72 ÷ 2.8 = (20272×10^-2) ÷ (28×10^-1) = 724×10^(-2-(-1)) = 72.4

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7 0
2 years ago
I hope your day is great, I would love it if you could help me with this!
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Answer:

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Step-by-step explanation:

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