Which equation can be used to represent "six added to twice the sum of a number and four is equal to one-half of the
difference of three and the number"?
6 + 2(x + 4) = 1/2(3 – x)
6+ 2(x + 4) = 1/2(x – 3)
(6 + 2)(x + 4) = 1/2(3 – x)
(6 + 2)(x + 4) = 1/2(x - 3)
save and fxit

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.