In the science club, 1/2 the students are freshman, 1/20 are sophomores, 1/10 are juniors, and 70 students are seniors. How many students are sophomores?

What is 7x7x7x7x7x7 in exponential form

A card is drawn from a standard deck of 52 cards and the result is recorded. what is the probability that a king or black card is drawn?

What number divided by 14 gives 40 as a quotients?

The frequency of a vibrating guitar string varies inversely as its length. Suppose a guitar string 0.65 meters long vibrates 4.3 times per second. What frequency would a string 0.5 meters long have?

Mr Stevens wants to put 17 books on the shelf. He put 8 books on the shelf. how many more books does he need to put on the shelf?

461:301 give the answer

The sum go 4 consecutive numbers is 326

Justin answered 68 questions correctly on an 80 question test. What percent of the question did Justin answer correctly?

The expression 7 + 3x + 4 represents the perimeter of the triangle. Simplify the expression

What is the mean of the values in the stem-and-leaf plot? Enter your answer in the box. Key: 2|5 means 25 A stem-and-leaf plot with a stem value of 1 with a leaf value of 2, 3, 5, a stem value of 2 with a leaf value of 8 and 8, a stem value of 3