Answer:
answer b
Step-by-step explanation:
Answer:
plug in -3 and 2 into the equations you should get two different numbers
Step-by-step explanation:
3(-3)+2(-3)=24
3(2)+2(2)=24
By adding all sides of the rooms walls you get 64 feet for your perimeter 20+20+12+12=64 feet
Answer:
a) see below
b) 40x20 meters
Step-by-step explanation:
Write down what you know:
- The area of the enclosure is length*width, so

- The length of the fencing is 80 meters, so

Now we have to combine these two equations above, and get rid of y in the process.
First rewrite the second as:

Then substitute for y in the first:

b) To maximize A, find the zero of the first derivative:

So y = (80-40)/2 = 20 meters.