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.
Answer:
Attachments
Step-by-step explanation:
Its 5, I believe you get this by just looking at the largest exponent
Answer:
V=56
Step-by-step explanation:
times both sides by 7
6000 pounds because 1 ton is 2000 pounds so you times 2000 by 3 and get 6000