Dane puppy weighed 8 ounces when it was born. now the puppy weighs 18 times as much as it did when it was born. how many pounds does dane's puppy weigh now?

Find the difference (8ab+a+2) - (3ab+6)

Which of the following is the true for f(x) = 5cos

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) = .