For this case we have that by definition, the volume of a rectangular prism is given by:

Where:
a: Long
b: Width
c: High
Prism 1:

Prism 2:

Thus, the total volume is:

Answer:

2x+y=400
A=xy area of farmland
y=400-2x
A=400x-2x^2
A'(x)= 400 -4x derivative of area with respect to x
0=400-4x find out where f ' equals 0
4x=400
x=100
A'(x)= 400 -4x
A''(x)= -4 check 2nd derivative. if negative then relative max at x=100
2x+y=400
y=200
dimensions 100x200
hope it helped
Answer:
y= 5 x=9
Step-by-step explanation:
i think im not sure!
Answer:
x=-6
Step-by-step explanation:
I hope this helps, I write it on a sheet because I don't have pencils and notebook now ^_^