Question

Find the length of ab​

Answer 1

8

Step by step explanation

From the diagram above,

AC = AB + BC

AC = 20

AB = 2x + 4

BC = 2x + 8

Therefore, 2x +4 + 2x + 8 = 20

4x + 12 = 20

4x = 20 - 12

4x = 8

X = 2

Therefore, AB = 2x + 4 = 2(2) + 4

AB= 4+ 4 = 8