Answer:
-3
Step-by-step explanation:
y=mx+ b
m is slope.
mark brainliest
Answer:
Solve for the first variable in one of the equations, then substitute the result into the other equation.
2, -1
Step-by-step explanation:
R-4+3r-16=180
4r-20=180
4r=200
r=50
Angle D
r-4
50-4
46
Angle E
3r-16
3•50-16
150-16
134
Answer:
Yes.
Step-by-step explanation:
Yes. Because opposite angles are congruent.