Answer:
C
Step-by-step explanation:
Because its right
Supplementary angles add up to 180 degrees more than the other, you can formulate an equation 180=(100+x)+x80=2x so, x=40 the other angle is 100 degrees more. So, the angle lengths are 40 and 140 degrees.
10-11= -1 You could also input this number on a calculator
Y-y
——-
X-x
21-9=12
5-(-1) =6
So the answer is D
Yes. Slope = rise over run so you go up one, over five
