Question

A line parallel to a triangle's side splits AB into lengths of x − 6 and x + 1. The other side, AC, is split into lengths of x and x + 21. What is the length of AC?

Answer 1

A line parallel to a triangle's side splits AB into lengths of x − 6 and x + 1. The other side, AC, is split into lengths of x and x + 21. What is the length of AC?

AC=39

Answer 2

Since x is 9, we can substitute in to find the length of AC.

(9) - 6 + (9) + 1 = 11

So AC is 11