Answer:
b = -10
<M = 90
<N = 50
<O = 40
Step-by-step explanation:
The sum of the angles of a triangle add to 180
<M + <N + <O = 180
90 + -3b+20 + -3b +10 = 180
Combine like terms
120 -6b = 180
Subtract 120 from each side
120-120 -6b = 180-120
-6b = 60
Divide by -6
-6b/-6 = 60/-6
b = -10
<M = 90
<N = -3b +20 = -3(-10) +20 = 30+20 = 50
<O = -3b +10 = -3(-10)+10 = 30+10 = 40
Answer:
D
Step-by-step explanation:
using the formula y = mx + b we can plug in the m and the b, getting
y = -5x - 9
Your answer is B. 1 and 3.
This is because adjacent angles are angles that could form one angle if the line inbetween them was removed, which means they have a common side. Angles 1 and 3 are the only angles out of the options that have a common side, so they must be the answer.
I hope this helps!