Find the area of the surface generated by revolving the curve x = (e^y + e^-y) / 2 from x = 0 to x = ln(2).

Arestaurant gives out a scratch-off card to every customer. the probability that a customer will win a prize from a scratch-off card is 25%. design and conduct a simulation using random numbers to find the experimental probability that a customer will need more than 3 cards in order to win a prize. justify the model for your simulation, and conduct at least 10 trials.

Name each raycalculation tip: in ray "ab", a is the endpoint of the ray.

1.two more than the quotient of a number and 6 is equal to 7 use the c for the unknown number translate the sentence into an equation