Solve the system: 2x – 6y + 4z = 3
-3x + 9y – 6z = -3
5x – 15y + 10z = 5

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.

Select all the expressions that will include a remainder.

Tom drove 206 miles in 3.9 hours. estimate his average speed.