Reed always bakes two trays of cookies at a time in his oven. in his oven, two trays of cookies can bake in the same amount of time as one tray. yesterday, he baked cookies for 36 minutes. if it takes 12 minutes to bake one tray of cookies, how many trays of cookies did reed bake yesterday?

What are the equivalent ratios for 24/2= /3= /5.5=108/ = /15

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) = .