Question

C is the midpoint of AB. a. find x b. find AC c. find AB

Answer 1

x = 5, AC = 31, AB = 62

Answer 2

62

Explanation:

if C is the midpoint of AB then AC = CB

7x - 4 = 2x + 21 add like terms

5x = 25

x = 5 since AB = 9x + 17 we write 5 instead of x in the expression because that's the value we found for x

9×5 + 17 = 62