find the missing number in each data set, with the mean given.\n7. mean = 7.8 5, 8, _, 12, 3\n8. mean = 12…

find the missing number in each data set, with the mean given.\n7. mean = 7.8 5, 8, _, 12, 3\n8. mean = 12 9, 12, 15, 21, 4, _\n9. mean = 74.5% 91%, 77%, 56%, _, 76%, 61%, 98%, 89%

find the missing number in each data set, with the mean given.\n7. mean = 7.8 5, 8, _, 12, 3\n8. mean = 12 9, 12, 15, 21, 4, _\n9. mean = 74.5% 91%, 77%, 56%, _, 76%, 61%, 98%, 89%

Answer

Answer:

(7) 11
(8) 11
(9) 40%