Answer:
A
Step-by-step explanation:
because proportion is right vertical
Answer:
i can hardly see that
Step-by-step explanation:
Answer:
3
Step-by-step explanation:
The least common denominator is the smallest number that is in the denominator. We have 9 in the denominator and 3, and the smaller one is 3
Answer:

Step-by-step explanation:
Data given

r = 6 in
Solution to the problem
We know that the area for a circle is given by:

We want to find at what rate is the area of the plate increasing at the instant when the radius is 6 inches. So we need to take partial derivates in both sides of the equation for the area, and if we do this we got:

Since we have all the values provided we just need to replace and we got:
