Answer:
The plane's average change of altitude is 0.45 miles per minute
Step-by-step explanation:
We have,
a passenger-jet pilot descended 0.18 mile in 0.4 minute.
It is required to find the plane's average change of altitude per minute.
It means we need to find the average speed. It can be calculated as :
[tex]v=\dfrac{0.18\ mile}{0.4\ min}\\\\v=0.45\ mile/min[/tex]
So, the plane's average change of altitude is 0.45 miles per minute.
