the following table shows how many multiplication problems 4 students were able to solve in different amounts of time. for example murray solved 58 problems in 2 minutes

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?

Look at triangle wxy what is the length (in centimeters) of the side wy of the triangle?

Scores on a university exam are normally distributed with a mean of 78 and a standard deviation of 8. the professor teaching the class declares that a score of 70 or higher is required for a grade of at least “c.” using the 68-95-99.7 rule, what percentage of students failed to earn a grade of at least “c”?