Answer:
The radius is <u>10 feet</u>.
Step-by-step explanation:
The diameter is always twice as large as the radius so divide the diameter by 2 and you'll get the radius.
20 ÷ 2 = 10
Hope this helps! :D
Since "a" is on the top and the bottom, you can simplify that


Answer:

Step-by-step explanation:

» Collect second degree terms (x² coefficients) together and first degree terms (x coefficients) and constants

Answer:
That first one is the answer