Triangles ABC and XYZ are similar figure because angels A, B, C, are congruent triangles X, Y, and Z, respectively. If side AC equals 6cm, BC equals 10cm, and XZ equals 18 cm, what is the length of side YZ? A. 40cm
B. 60cm
C. 30cm
D. 50cm​

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.