Step-by-step explanation:
X(x+6) - 6(x+6)
X+6x-6x-36
X-36
First you have to figure out the length of the track:

r is the half of the diameter:
200ft : 2 = 100ft

= 200

≈
628,31
The athlete has to run ca. 5280ft for one mile:
5280 : 628,31≈8,4
The athlete has to run 8,4 laps
Answer:
60 sold
Step-by-step explanation:
4/5 of 75 new houses sold this year comes out to 60 new houses sold. Just multiply the total (75 houses) by this fraction (4/5).
The answer is 6.89 because
6.89+14.52=21.41
So 21.41+(-14.52)=6.89