Question

How do you solve this? Please help!

Answer 1

b

Explanation:

u can use the ration method

15:15+36

20:6x-7

then cross multiply

and x =12.5

Answer 2

x = 12.5

Explanation:

The large outer triangle and the small inner triangle are similar, thus the ratio of their corresponding sides are equal, that is

`(20)/(6x-7)` =
`(15)/(15+36)` =
`(15)/(51)` ( cross- multiply )

15(6x - 7) = 1020 ( divide both sides by 15 )

6x - 7 = 68 ( add 7 to both sides )

6x = 75 ( divide both sides by 6 )

x = 12.5