Which set is the solution set for the given inequality? -3(2x - 4) < 7 (3 - 2)
O {z real| 2 > -9}
O {z real| 2 > -5}
O {I real|I <9}
s
O { x real|2 <33}

Divide the following fractions 3/4 ÷ 2/3 1/2 8/9 9/8 2

For what value of (y) is 3^3/3^y =1/9

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) = .