The data represented by the graph is normally distributed and adheres to the 68-95-99.7 rule. the standard deviation of this data is , and % of the data is either less than 4.2 or more than 11.4.

Each of the four sides of a swimming pool measures 9 meters. the pool is 5 meters deep. how much water will be needed to fill it completely? a. 45 cubic meters b. 81 cubic meters c. 225 cubic meters d. 405 cubic meters reset next

The tuition costs, c, for a local community college are modeled by c(h) = 250 + 200h, where h represents the number of credit hours taken. the local state university has tuition costs, s, modeled by the function s(h) = 300 + 180h. how many credit hours will a student have to take for the two tuition costs to be equal? round the answer to the nearest tenth of an hour.

The ratio of the measures of the three angles in a triangle is 2: 9: 4. find the measures of the angels