Leah's bedroom has an area of 81 square feet. The bedroom is 9 times as many square feet as Leah's closet. If the closet is 3 feet wide, what is the length of the closet?

Which of the following three dimensional figures has a circle as it’s base

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) = .

Hurry which expression is equivalent to 3√x^5y?