Answer:
(for # 3) 7
Step-by-step explanation:
because the whole thing = 128 4/7 degrees and there are seven sections that equal 51 3/7 degrees. when added they equal 128 4/7
Answer:
It will take 4.5 hours for rick to complete the job.
Step-by-step explanation:
Given:
Time taken by Phil to paint the garage = 12 hours.
It means that for each hour he does =
of the job.
.
Time taken by Rick to paint the garage = 10 hours.
It means that for each hour he does =
of the job
.
If they work together for 3 hours,
Phil does job in 3 hrs = 
Rick does job in 3 hrs = 
.
So in three hours of working together job done = 
.
This means job of the painting entire garage have been done 0.55 of it.
1 - 0.55 = 0.45.
So there is 0.45 job left
At this point Phil quits and Rick presses on by himself. Since he does 1/10 of the garage every hour
Let T represents the time that Rick needs to complete the job after Phil leaves.
Hence, 
Hence it will take rick 4.5 hours to complete the remaining job.
the volume of the sphere is =4/3.pi.r^3
Answer:
The fourth one
Step-by-step explanation:
I know that is correct