Answer:
BC = 30
Explanation:
given that A , B and Care collinear ( lie in a straight line ) , then
AB + BC + AC ( substitute values )
2x + 2 + 3x + 6 = 48 ( collect like terms on left side )
5x + 8 = 48 ( subtract 8 from both sides )
5x = 40 ( divide both sides by 5 )
x = 8
Then
BC = 3x + 6 = 3(8) + 6 = 24 + 6 = 30