Answer: 3.125
Step-by-step explanation:
$3.75 would be rounded up and changed to $4
r= 9 because 45/5 is 9 and it works the same way for the rest of the problems.
Answer:
Miles per hour
Step-by-step explanation:
And if you want to know the speed it's 3 miles per hour.
Answer:
7m
Step-by-step explanation:
v=πr^2h
769.3=3.14*r^2*5
769.3=15.7r^2
769.3/15.7=15.7r^2/15.7
49=r^2
√49=√r^2
√49=r
r=7m
