Question

Find the length of x



please thank you

Answer 1

x = 5

Explanation:

The small right triangle and the outer right triangle are similar, thus ratios of corresponding sides are equal, that is

`(3.5)/(7)` =
`(2.5)/(x)` ( cross- multiply )

3.5x = 17.5 ( divide both sides by 3.5 )

x = 5