Which property of equality was used to solve this equation? СА. addition property of equality OB subtraction property of equality OC. multiplication property of equality D. division property of equality​

Solve this system of equations. 12x − 18y = 27 4x − 6y = 10

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.

Do, h = (7, 9) (14, 18) the scale factor is