Question

Points A, B, and C are collinear. Point B is between A and C. Find the length indicated.​

Answer 1

Answer:

AB=1

Step-by-step explanation:

Colinear means all points are on the same line. We need to find the measure of AB.

Using the segment addition postulate,

ab+bc=ac

Subsitue this for our known values

$2x + 15 + 9 = x + 17$

Solve for x

$2x + 24 = x + 17$

$x + 24 = 17$

$x = - 7$

Plug this in for AB

$2( - 7) + 15 = 1$