Question

Someone please help me!!! I’m stuck and need help!

Answer 1

12

Explanation:

These triangles are similar using the AA theroem. This means there sides are in corresponding proportion.

Side AR and Side TE are corresponding. Use this proportion.

`(6)/(8)`

This side the triangle SAR side lengths are 3/4 of side lengths of triangle SET.

We know that RS+ST=21

And that RS=3/4(ST).

`(3)/(4) x + x = 21`

`1.75x = 21`

x=12.

Side ST is 12