Answer:
B. is your answer.
Step-by-step explanation:
You solve for y and get
y=3/4x-5
Slope is 3/4
Y intercept is -5
Answer:
The rate of change in surface area when r = 20 cm is 20,106.19 cm²/min.
Step-by-step explanation:
The area of a sphere is given by the following formula:

In which A is the area, measured in cm², and r is the radius, measured in cm.
Assume that the radius r of a sphere is expanding at a rate of 40 cm/min.
This means that 
Determine the rate of change in surface area when r = 20 cm.
This is
when
. So

Applying implicit differentiation.
We have two variables, A and r, so:



The rate of change in surface area when r = 20 cm is 20,106.19 cm²/min.
Answer:triangles 20 12 28 and15 9 21
Step-by-step explanation:
Answer:
789
.5 is a 5 or larger so the 8 goes to a 9
Step-by-step explanation: