On Saturday, A local hamburger shop sold a combined total of 452 hamburgers and cheeseburgers. The number of cheeseburgers sold was three times the number of hamburger sold. How many hamburgers were sold on Saturday?

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.

Write an inequality and solve each problem.for exercises 11 and 12, interpret the solution.

Add the fractions and simplify 1/2+ 1/3