Simplify the expression 2 ( 10 ) + 2 ( x − 4 ) 2(10)+2(x−4)

If you are just building your payment history, how many points from a perfect score will you possibly miss?

Asystem of equations has 1 solution.if 4x-y=5 is one of the equations , which could be the other equation ?

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) = .