Answer:
y=-5x+4
Step-by-step explanation:
Answer: your answer would be
x-30y=100 and 10y = x - 20
Step-by-step explanation:
Answer:
I think its 6 :)
Step-by-step explanation:
I think its not a correct solution of given equations.
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.