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4 years ago

If 20 is decreased by 40%, what is the new amount?

Mathematics

2 answers:

tester [92]4 years ago

8 0

Please go on my acc and help

aksik [14]4 years ago

3 0

Answer: The correct answer is 12.

Step-by-step explanation: If 20 is decreased by 40% the first thing that we need to do is calculate how much is 40% of 20.

20 x .4 = 8

Now, subtract 8 from 20:

The answer:

20 - 8 = 12

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Referring to the picture I have uploaded might help you
We have the same base, which in this case is x.

When multiplication occurs in the same base, we add the powers
$x^\frac{4}{3} x^ \frac{2}{3}$
↓ (I am going to perform the problem separately and then give the final answer as the power to x)
$\frac{4}{3} + \frac{2}{3}$ = $\frac{6}{3} = 2$
↓
x²

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The power of a power should be performed by multiplying the powers together.
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