2 years ago

AC CE and D is the midpoint of CE. IF CE 10x + 18, DE =7x -1, and BC = 9x - 2, find AB, AB =

Mathematics

1 answer:

Anastasy [175]2 years ago

4 0

Answer:

<h3> If you mean: AC=CE, the answer is: AB = 24</h3>

Step-by-step explanation:

D is the midpoint of CE, then

CD = DE = 0.5CE = 0.5(10x+18) = 5x + 9

So: 5x + 9 = 7x - 1

-9 -9

5x = 7x - 8

-7x -7x

-2x = -8

÷(-2) ÷(-2)

x = 4

AC = CE = 10x + 18 = 40 + 18 = 58

BC = 9x - 2 = 36 - 2= 34

AB = AC - BC = 58 - 34 = 24

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1 year ago