Jerry played with 3 friends today, all at different times. he played with tommy for 7/8
7start fraction, 7, divided by, 8, end fraction of an hour, then nathan for 3/4, then chris for 3/2
how many hours did jerry play with his 3 friends today?

Janet drove 300 miles in 4.5 hours. write an equation to find the rate at which she was traveling

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.

Find the arc length of the semicircle. 7the grade