Question

If B is the midpoint of line segment AC, AB=20, and BC=4x-4, find x.

Answer 1

x = 6

Explanation:

B is the midpoint of AC. So, the length of AB equals length of BC

BC = AB

4x - 4 = 20 {add 4 to both sides}

4x -4 + 4 = 20 + 4

4x = 24 { divide both sides by 4}

4x /4 = 24/4

x = 6