Kevin wants to add 3 more cichlids to the aquarium. He does not want to change the ratio among the three types of fish, so he will add more catfish and tetrás as well.
If he adds 3 more cichlids to the aquarium, how many more catfish and how many more tetras
should he add to the aquarium? 5

Which of the following is the true for f(x) = 5cos

What are the coordinates of the point that is 1/3 of the way from a to b? a (2,-3) b (2,6)

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.