Question

What is the value of x? Enter your answer in the box. x =

Answer 1

x=9

Explanation:

We have two similar triangles because both lines are parallel, use proportions to solve:

`(72)/(9) =(56)/(3x-20)\\8=(56)/(3x-20)\\8(3x-20)=56\\3x-20=7\\3x=27\\x=9`