Answer:
59
Step-by-step explanation:
We know that all the angles must add up to 180
so we have
38+2b-20+b-15=180
solve for b
3b+3=180
3b=177
b=59
5+y+z I think x Something like that.
(x + 2) = 3
-2 -2
0 1
x = 1
Look at the pictures.
<h3>Answer: A''''(2, -12), B'''(6, -10), C''''(4, -7)</h3>