The frequency table shows the number of books Hailey read over a 12 month period. Using the frequency table find the average number of books read per month. (Round to the nearest tenth.) A) 7.0
B)7.7
C) 7.8
D)7.9
E) 8.0

Can someone me with this? write an even number that has a 7 in the hundreds place, an odd number in the thousands place, and is a multiple of

Ab based on the given diagram, if m_1 = 60° then m 2 = 30 60 90 180

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) = .