Hurry the ratio of girls to boys in the middle school band is 4 to 5 whick of these show the possible numbers of the girls and boys in band A 45 girls,54 boys

B 12 girls 20 boys

C 36 girls 45 boys

D 50 girls 40 boys

What 2 forces allow things to fall ‍♀️‍♀️

What is the exact volume of the cylinder (radius 13 in., height 30 in.)

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.