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Alenkinab [10]
3 years ago
9

WHAT IS THE LENGTH OF AC? Help me!!!

Mathematics
1 answer:
nasty-shy [4]3 years ago
7 0
Given triangles are similar, so we setup a proportion 

(140-x)/81 = x/9

solving gives x = 14
AC = 140-x = 140-14 = 126
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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)
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  ↓
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The power of a power should be performed by multiplying the powers together.
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