The librarian found that 7 out of 10 students like dystopian books. If the school has 120 students, how many students could you predict would like dystopian books.

A20? -foot ladder is placed against a vertical wall of a? building, with the bottom of the ladder standing on level ground 19 feet from the base of the building. how high up the wall does the ladder? reach?

What is the standard deviation of the following data set rounded to the nearest tenth? 3, 17, 18, 15, 12, 21, 9

If a baby uses 15 diapers in 2 days, how many diapers will the baby use in a year?