Answer:
See Below.
Step-by-step explanation:
We have the equation:

And we want to show that:

Instead of differentiating directly, we can first square both sides:

We can find the first derivative through implicit differentiation:

Hence:

And we can find the second derivative by using the quotient rule:

Substitute:

Simplify:

Combine fractions:

Simplify:

Simplify:

Q.E.D.
Answer:
$15.
Step-by-step explanation:
90-75=15, which is the difference between the two. Hope this helps.
Answer:
there is no picture... but i will try my best to help you if you post picture in another question
Answer:
Variable- it doesnt really matter. Im just going to use X.
Equation- $16.35 + x = $39.75.
The solution is $23.40
Step-by-step explanation: Basically you reverse the equation so it says $39.75 - $16.35 = x . Then you just subtract.
Answer:
Area=615.75
Step-by-step explanation:
A=πr2
Seriously I have helped you twice in 5 minutes.