Answer:

Step-by-step explanation:
From the diagram:

Now Angle 1 and Angle 2 are on a straight line, therefore:

Answer:
1/5
Step-by-step explanation:
hope this helps!
(x+y=31)2
2x-y=11
2x+2y=62
- 2x -y=11
3y=51
y=17
x+17=31
x=14
y-x=3
Answer:
32 i think
Step-by-step explanation:
its 16 cm, so 2 full rotations would be 16 times 2
which is 32
B I think but i could be totally wrong