marions dinner at a restruant came to $32.40. this includes 8% tax. marion wants to leave a 15% tip. on the cost of the dinner alone. How much should she leave as a tip.

What is the difference between the number of adult dogs at the park on monday and tuesday

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) = .

How many grams the dog will eat in 3 days?