1 mile=5280 feet
4 miles=21120 feet
21120×20÷100=4224. As a result, 20% of 4 miles is 4224 feet. Hope it help!
Answer:
Y=7 X=1
Step-by-step explanation:
if need an explanation please ask
Solution :
Group Before After
Mean 693.75 743.75
Sd 155.37 143.92
SEM 54.93 50.88
n 8 8
Null hypothesis : The preparation course not effective.

Alternative hypothesis : The preparation course is effective in improving the exam scores.
(after - before)
Answer:
h=12
Step-by-step explanation:
First look at the formula for finding the volume of a cone- 
Next substitute any variables for values you already know- 
Then solve the equation.