Answer:
e=1
Step-by-step explanation:
Answer:
2/5
Step-by-step explanation:
Answer:

Step-by-step explanation:
Given




Required
Find the height
The volume is calculated as thus:

This gives

Apply difference of two squares


Subtract 15 from both sides

Using a calculator to factorize, we have:

Split
or 
or 
x has complex roots for 
Hence:

Recall that:


It will take 250 seconds for it to reach the bottom. To find this I did 17.5 divided by .07.