Which expression is equivalent to 1/49 a.7^-1 7^-1 b.7^8* 7^-6 c. 7^-5*7^3 d. 7^7* 7^-9 e.7^-2* 7^4

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.

Astore has clearance items that have been marked down by 60%. they are having a sale, advertising an additional 55% off clearance items. what percent of the original price do you end up paying?

What is the distance between point a and b