In triangle abc, m∠bac = 50°. if m∠acb = 30°, then the triangle is triangle. if m∠abc = 40°, then the triangle is triangle. if triangle abc is isosceles, and ab = 6 and bc = 4, then ac =

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.