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3 years ago

-40 -8v = 2v-5 (1-5v)

Mathematics

1 answer:

Maslowich3 years ago

4 0

v = -1

First, distribute the equation. This gives you -40-8v=2v-5+25v.

Now, combine like terms. This gives you -40-8v=27v-5.

Now, add 40 to both sides. This gives you -8v=27v+35.

Now, subtract 27v from both sides. This gives you -35v=35.

Now, divide -35 on both sides. This gives you v=-35/35.

v=-1.

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<h3>Answer: They're all the same</h3>

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Reason:

$2^6$ means we have 6 copies of "2" multiplied out as shown in choice B. That explains how A and B are the same, and we can say

$2^6 = (2*2*2)*(2*2*2)$

The parenthesis are optional, but I find they're handy to count the '2's easier.

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Now notice that

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$2^6 = (2*2*2)*(2*2*2)\\\\2^6 = (2^3)*(2^3)\\\\2^6 = (2^3)^2\\\\$

The last step is possible because we have two copies of $2^3$ multiplied together.

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