Answer:
radius=7.5, diameter=13
Step-by-step explanation:
diameter is the length across a circle through the middle, and it is given in the picture. radius is half of the diameter
X, y - the numbers
The sum of the two numbers is 9.

If one number is subtracted from the other, the result is 3.

Solve the system of equations:

The numbers are 6 and 3.
7. subtraction property
division property
8. subtraction property
multiplication property
9. distribution property
addition property
division property
10. distribution property
combine like terms
addition property
division property
11. combine like terms
distribution property
subtraction property
subtraction property
division property
Answer: it is 15
Step-by-step explanation: