Question

B is the midpoint of AC if AB equals X +5 and BC equals 2X -11 find the measure of AB

Answer 1

AB = 21

Explanation:

The midpoint divides the segment into two congruent parts, so you have ...

AB = BC

x +5 = 2x -11 . . . substitute the given expressions for AB and BC

16 = x . . . . . . . . add 11-x

Then the measure of AB is ...

AB = x +5 = 16 +5 = 21