I drove to the beach at a rate of $40$ miles per hour. If I had driven at a rate of $30$ miles per hour instead, then I would have arrived $20$ minutes later. How many miles did I drive?

In the rectangle below ac=30 units what is de

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.

Which of the following is an example of a rational number? a. π b. √ 9 c. √ 8 d. 3.8362319