Question

If AB = 7x, CB = 5x + 8, and BD ⊥ AC, what is the length of CB?

Answer 1

Answer: 28

Explanation:

Because BD ⊥ AC we can conclude that AB is equal to CB so we can set them equal to each other in an equation.

7x = 5x + 8

2x = 8

x = 4

Because X is 4 we can fill it into CB's expression.

5(4) + 8

20 + 8

28