What number can multiply to 8 but add up to 12

Which expression calculates the speed in meters per second of an object that travels a distance of 100 m every 20 seconds

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.

Apackage of five erasers cost 0. $.39 at this rate how many how much would 60 erasers cost in dollars and cents