36.25/5 = 7.25
The first digit of the quotient is in the ones. Paul is correct.
Sixty square feet you can look it up!
This sounds like a very poor business model right from the beginning.
The mine continuously operates at a loss, and it has nothing to sell.
If it uses 14 tons an hour just to keep running, and it produces 2 tons
an hour, then it doesn't take a business genius to point out that this
operation is rapidly digging itself straight into the ground.
I'm guessing that there was a major mistake made during the copying
of the problem.
V = x³ - 6x²y + 12xy² - 8y³
V = (x - 2y)³
= (x - 2y)(x - 2y)(x - 2y) ( expand first pair of factors )
= (x² - 4xy + 4y²)(x - 2y) ( multiply terms in first by terms in second )
= x³ - 4x²y + 4xy² - 2x²y + 8xy² - 8y³ ( collect like terms )
= x³ - 6x²y + 12xy² - 8y³