Jose needs $75 to pay for the monthly subscriptions for Hulu, Netflix, Disney, and HBO GO. His mother agrees to pay him $5 an hour for raking
leaves in addition to his $10 allowance. What is the minimum number of
hours that Jose must rake leaves to earn enough money to pay for both
subscriptions?

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) = .

Evaluate the discriminant of each equation. tell how many solutions each equation has and whether the solutions are real or imaginary. 4x^2 + 20x + 25 = 0

Eden has a part time job. she is paid ? 7.20 an hour the week she worked 18 and a half hours how much is she paid