Question

Can someone help please :)

Answer 1

x = 5

Explanation:

These triangles are similar, so they are in proportion to each other. Because of this we can say
`(2.5)/(3.5)` (the lengths of the vertical sides) =
`(x)/(7)` (the lengths of the hypotenuses). If we solve by cross-multiplying the numbers and then dividing we get x = 5.