What power of 10 is needed to write the number 860,000,000 in scientific notation?

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) = .

Find all solutions for 2y - 4x =2 y = 2x + 1 site: socratic. org

What are the coordinates of the image of p for a dilation with center (0, 0) and scale factor 2