Answer: o well i dont really knwo
Step-by-step explanation:
5x^2= 2205
Divide both sides by 5
x^2=441
Find the square root of both sides
x= 21
Thrirty-two million,five thousand,and eight.
If he runs 1/2 a mile in 5 minutes then 60 minutes would be 5x12 and 1/2x12 would be 6 so he can run 6 miles per hour