B, a supplementary triangle because it all adds up to 180 degrees.
I got 157/990. Just don't ask me how. I just used my fancy TI-84 Calculator.
black ball and red ball
8 out of 12 x 4 out of 11
x 
=
= 0.24 = 24%
Answer: 24%
Answer:
see bellow
Step-by-step explanation:
6. 108 degrees
7. 150 degrees
8. 135 degrees
9. 162 degrees
10. 2,340 degrees
I did the first 5, I hope it helps!