Look at the two equations: -3x + 6 = 21 -3x + 6 < 21 Which statement best describes the process used to solve the equations?

What term makes it inconsistent y=2x - 4 ?

The weight of an object in the water is 7% of its weight out of the water. what is the weight of a 652g object in the water?

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) = .