An oil tank has to be drained for maintenance. The tank is shaped like a cylinder that is 3 ft long with a diameter of 2.2 ft. Suppose oil is drained at a rate of 2.5 ft per minute. If the tank starts completely full, how many minutes will it take to empty
the tank?

3.17 scores on stats final. below are final exam scores of 20 introductory statistics students. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 57, 66, 69, 71, 72, 73, 74, 77, 78, 78, 79, 79, 81, 81, 82, 83, 83, 88, 89, 94 (a) the mean score is 77.7 points. with a standard deviation of 8.44 points. use this information to determine if the scores approximately follow the 68-95-99.7% rule. (b) do these data appear to follow a normal distribution? explain your reasoning using the graphs provided below.

Simplify this expression. 8x 16(x + y)

286 divided by 457.6 what is the quotient?