which of the following expressions is the conjugate of a complex number with -6 as the real part and -5i as the imaginary part?

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.

Factor the polynomial. b^2 + 4b + 4

Which of the following is an example of a rational number? a. π b. √ 9 c. √ 8 d. 3.8362319