Find the mean of the given data set. 10, 12, 3, 12, 10, 3, 14, 12
Round your answer to the nearest 2 decimal places.

Which equation represents a proportional relationship that has a constant of proportionality equal to 1/5

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) = .

Which coefficient matrix represents a system of linear equations that has a unique solution ? options in photo*