A bag has 5 red marbles, 6 blue marbles and 4 black marbles. What is the probability of picking a red marble, replacing it, and then picking a blue marble?
A bag has 4 green marbles, 3 red marbles, and 3 yellow marbles. What is the probability that you pick a green marble, do not replace it, and pick a red marble?
A delicatessen offers 4 different breads, 4 cheeses, and 6 different meats. In how many ways can a sandwich be made with 1 bread, 2 cheese and 3 meats?
What is the standard deviation of the following data? If necessary, round your answer to two decimal places.
13, 11, 4, 5, 6, 9, 10, 12, 15, 16
Find the 2nd term of an arithmetic sequence with t1 = 4 and t5 = 6.
Triangle DEF is similar to triangle PQR. Side DE measures 3, side EF measures 7 and side FD measures 9. Side PQ measures 5x - 25 and side QR measures 6x + 4. Find the value of x.