W^2(x+8)+z(x+8)=( )(x+8) find the missing factor PLEASE!

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.

Combine like terms to make a simpler expression 3z+z

If a flying disk is 139 meters in the air and travels at an average of 13 m/s how long is it in the air