Find the product. Write your answer in
exponential form.
9x9^7
Enter the correct answer.

Which values for a and b will create infinitely many solutions for this system of equations? ax-y=8 2x+y=b

What expression is equivalent to 42x-56y

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.