if B is the midpoint of AC and AB=3x-9 and BC=2x+5, what is x and what is BC equal to?

Answer 1

Because B is the midpoint, you can the equations of AB and BC and make them equal to each other (AB=BC). Solve for x, and you get x=14. Plug in x in the equation for BC; it equals 33.

x=14

BC=33