Ann works 51/2 hours, Mary works 61/3 hours, and John works 41/4 hours. How many combined hours have they worked?

Expand and simplify x (3x - 11)

What mutiplies to give you 21 and adds to give you 5

The success rate of a freshman graduating at the same college they started at is 73%. For a group of 15 students, what is the probability that exactly 8 graduate? (round your answer to the nearest hundredth)

Mathis made gift bags for the students in his class for his birthday. Each gift bag contains 5 pieces of candy. If he brought 120 pieces of candy total, how many gift bags did Mathis give out?

A department store, on average, has daily sales of $154.87. The standard deviation of sales is $24.67. On Tuesday, the store sold $101.69 worth of goods. Find Tuesday's z score.

1. (-3) 4 is equivalent to which of the following? a. 3 x 3 x 3 x 3 b. - 3 x - 3 x - 3 x - 3 c. 4 x 4 x 4 d. - 4 x - 4 x - 4

Rosa make 2 1/2 cups of pudding. how many 1/3 cup servings can she get from the pudding

What is the probability that either two heads or three heads will be thrown if six fair coins are tossed at once?

The sum of two sisters ages is 38. One is 10 years older than the other. How old is the oldest sister?

How many significant digits are in thus number 74.30