Answer:
10 hours
Step-by-step explanation:
320 = 30x + 20
300 = 30x
x = 10
Answer:

Step-by-step explanation:
add green and yellow which is 10 over the whole thing which is 23
Depending on how big the center is, I would say 15.
I hope this helped!
Answer:
20(pie)
Step-by-step explanation:
Since the circumference of a circle is 20 feet, the formula for circumference is 2r(pie) with r=radius
(radius)2=diameter
(diameter)(pie)
20(pie)
( - 0.625, - 1.75 )
so since the first equation is already simplified , just replace it in the second equation