180=51+2x+3+4x+8
180=51+11+6x
180=62+6x
-62 -62
-----------
118=6x
---------
6x 6x
x=17
exterior angle = 4x+8
4(17) + 8
68 + 8
76
It’s 8cm ……..the answer is 8cm you can tell because on the other side it says 8 and pr is the same size as the other
Answer:

Step-by-step explanation:
The scientific notation:

We have:

WX/RS = (28 ft)/(40 ft) = 7/10
Selection D is appropriate.
Answer:
13
Step-by-step explanation:
use Pythagorean
it is usually, 5, 12, 13