Answer:
x=9
Step-by-step explanation:
To solve for x, you can set up a proportion between the 2 triangles we see.
The small triangle can be written as
, and the large triangle can be written as
.
Set both proportions equal to each other.
![\frac{16}{20}=\frac{28}{2x+17}](https://tex.z-dn.net/?f=%5Cfrac%7B16%7D%7B20%7D%3D%5Cfrac%7B28%7D%7B2x%2B17%7D)
Cross multiply and solve for x.
![16(2x+17)=(28)(20)](https://tex.z-dn.net/?f=16%282x%2B17%29%3D%2828%29%2820%29)
32x+272=560
32x=288
x=9