Question

The triangles are similar.
What is the value of x?

x =

Answer 1

5 x 3 = 15 12 x 3 = 36 your answer would be 13 because 13 because 13 x 3 would be 39

Answer 2

x = 23

Explanation:

Since the triangles are similar then the ratios of corresponding sides are equal, that is

`(39)/(x-10)` =
`(36)/(12)` =
`(15)/(5)` = 3

multiply both sides by (x - 10)

3(x - 10) = 39 ( divide both sides by 3 )

x - 10 = 13 ( add 10 to both sides )

x = 23