The graph shows a normal distribution with a standard deviation of 10. Which percentage is the best estimate for the shaded area under the normal curve?
A. 42%
B. 77.5%
C. 79%
D. 83.5%

Which sentence describes why polygon mnop is congruent to polygon jklp? a. polygon jklp maps to polygon mnop through a translation. b. polygon jklp maps to polygon mnop through a rotation. c. polygon jklp maps to polygon mnop through a dilation. d. polygon jklp maps to polygon mnop through a stretch.

Write two subtraction equations that are equivalent to 5 + 12 = 17.

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.