How many factors are in the following expression: 3x(x + 5)(y – 3) Options:
A- 1
B-2
C-3
D-4

In the 30-60-90 triangle below side s has a length of and side r has a length

Place the following steps in order to complete the square and solve the quadratic equation,

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.