In an all boys school, the heights of the student body are normally distributed with a mean of 68 inches and a standard deviation of 4.5 inches. Using the empirical rule, what percentage of the boys are between 54.5 and 81.5 inches tall?

What is the slope simplify your answer and write it as a proper fraction, improper fraction, or integer

What is the value of r of the geometric series?

The map shows the location of the airport and a warehouse in a city. though not displayed on the map, there is also a factory 112 miles due north of the warehouse. a truck traveled from the warehouse to the airport and then to the factory. what is the total number of miles the truck traveled?