Question

Points A-B-C are collinear and B is between A-C .Given AB=12 and AC=19 what is BC

Answer 1

BC = 7

Explanation:

collinear , means the points A, B , C, lie on a straight line, then

since B is between A and C , THEN

AB + BC = AC ( substitute values )

12 + BC = 19 ( subtract 12 from both sides )

BC = 7