Answer:
I think it's A AND C. The diameter is just the radius multiplied by 2 at the end of the day.B is just wrong.
Answer:

Step-by-step explanation:

"To make x the subject" means to have the equation with all the terms in x on one side. As of now, y is the subject of the equation.
You start by subtracting 2 from both sides, you should get the following.

Then you multiply by 2 from both sides, you should end up with the following.

Therefore, you get the following.

Finally, you distribute and get the answer.

Answer:
dont know but i feel like its D
Answer:
the answer is 511 I think
Step-by-step explanation:
percentage * your amount / 100
(70 * 730) / 100
Amount = 511
Answer:
$ 97
Step-by-step explanation:
Total payment = A + b = 488 + 294 = 782
half of bills = 782 /2 = 391
B owe to a: 488 - 391 = 97
check: 97 + 294 = 391