Question

If B is the midpoint of AC, and AC = 8x – 20,
find BC.
3x - 1
A
B
C

Answer 1

x = 9

Explanation:

Since B is the midpoint, that means segment AB has to be the same length as BC.

Therefore:

`2(3x-1)=8x-20`

`6x-2=8x-20`

`18=2x`

`9=x`