Answer:
Casey will take 3 minutes to clean
part of the section.
Step-by-step explanation:
∵ Casey takes the time to cleans
of a section = 1 minute
∴ He will take the time to clean complete section =
= 
= 3.6 minutes
Now time taken to clean
part of the section = 
= 3 minutes
Therefore, left part of the section will be cleaned by Casey in 3 minutes.
21x-9+63=180
21x+54=180
21x=126
x=6
<span>A foot per second is a unit of speed. Something traveling one foot per second is traveling 0.3048 meters per second, or about 0.682 miles per hour. hope this helped please mark me as the brainliest answer
</span>
Answer:
3
Step-by-step explanation:
add up all data values to get the sum count the number of values in your data set divide the sum by the count