Respuesta :
set the equation for AB equal to BC and solve for x giving you 16 than pull 16 into X in the AB equation giving you 21 for the measure of AB
Answer:
AB = 21 is the measurement.
Step-by-step explanation:
It is given in the question that B is the mid point of AC.
AB = x + 5 and BC = 2x -11
Since B is the midpoint of AC, therefore AB = BC
x + 5 = 2x - 11
2x - x = 11 + 5 = 16
x = 16
Therefore AB = x + 5 = 16 + 5 = 21
Length of AB is 21.