Which of the following percents can also be expressed as a mixed number?
310%
49%
7.4%
0.001%

Multiply −2x(6x^4−7x^2+x−5) express the answer in standard form. enter your answer in the box.

What is the measure of angle tvu shown in the diagram below

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) = .