Question

If ab=4x-10,Bc=x-1 and b is the midpoint of ac, find ab

Answer 1

AB = 2

Explanation:

If B is the midpoint of AC then:

AB = BC

4x - 10 = x - 1

+10 +10

4x = x + 9

-x -x

3x = 9

÷3 ÷3

x = 3

AB = 4x - 10 = 4×3 - 10 = 12 - 10 = 2