1. C
2.D
3.A
4.B
Hope this helps!
The answer is B 10/18 and 3/18
Answer:
57.5 degrees
Step-by-step explanation:
Assuming this is a triangle
a is adjacent is ∠B
b is opposite of ∠B
Use the inverse tangent equation: 
This equals to 57.52880771
Answer: 19/100
explanation: it has a 19% chance so it is 19/100