PLEASE HELP IMMEDIATELY The radius of Circle A is 4 cm. The radius of Circle B is 4 cm greater than the radius of
Circle A. The radius of Circle C is 4 cm greater than the radius of Circle B. The radius of Circle D is
3 cm less than the radius of Circle C. What is the area of each circle? How many times greater
than the area of Circle A is the area of Circle D?

17. a researcher measures three variables, x, y, and z for each individual in a sample of n = 20. the pearson correlations for this sample are rxy = 0.6, rxz = 0.4, and ryz = 0.7. a. find the partial correlation between x and y, holding z constant. b. find the partial correlation between x and z, holding y constant. (hint: simply switch the labels for the variables y and z to correspond with the labels in the equation.) gravetter, frederick j. statistics for the behavioral sciences (p. 526). cengage learning. kindle edition.

The surface area of the triangular prism is .

In a singing competition, there are 150 participants. at the end of each round, 40% of the participants are eliminated. how many participants are left after n rounds?