Ashley is the utilities manager at a paper mill. she’s watching over one of her holding tanks. it takes of an hour to fill the tank. at this rate, how many holding tanks will she fill in 1 hour?

What is the product of the radical expression. (7-2square root) (8+2 square root)

Prove (a) cosh2(x) − sinh2(x) = 1 and (b) 1 − tanh 2(x) = sech 2(x). solution (a) cosh2(x) − sinh2(x) = ex + e−x 2 2 − 2 = e2x + 2 + e−2x 4 − = 4 = . (b) we start with the identity proved in part (a): cosh2(x) − sinh2(x) = 1. if we divide both sides by cosh2(x), we get 1 − sinh2(x) cosh2(x) = 1 or 1 − tanh 2(x) = .

What is negative 3/9 times negative 2/8 ?