Solve using the quadratic formula: 2x^2+10x+15=0

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.

The volume of a sphere is increased by 6%. calculate the corresponding percentage increased in it area.

What is the solution to this system of equations? y= 2x - 3.5 x - 2y = -14