Answer:
6.
Step-by-step explanation:
1) OA=d/2=20/2=10;
2) AB=AC/2=16/2=8;

Answer: f(y) x g(y) = 1
Step-by-step explanation:

H^2+g^2=6^2
basically square each thing, and add h and g together
Answer: 21
Step-by-step explanation: 21 + 21 = 21
Answer: no
Step-by-step explanation:
because you can do what is known as the vertical line test to determine if it is a function you do that by plotting it and if it goes in a vertical line then it is a function