Answer:
155°
Step-by-step explanation:
<O=24
<P=2x+9
<N=180-(3x-28) (It’s the supplement of 3x-28)
Add them together to equal 180. (180 is the sum of the 3 interior angles of a triangle.)
24+2x+9+180-(3x-28)=180
24+2x+9+180-3x+28=180
-1x+241=180
-1x=-61
x=61
Now that we’ve solved for x, plug it back into <MNO
<MNO=3x-28=3(61)-28=183-28=155°
