Find the sum. (3a2 + 2ab + 2b) + (5a2 − 3ab + 9)

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.

Find the solution(s) to the system of equations. select all that apply y=x^2-1 y=2x-2

Pyramid shown has a square base that is 18 inches on each side has a surface area of 164 square inches what is the slant height