Jonathon has a bag full of 14 balls to sell. he sells the baseballs for $2 dollars and the volleyballs for $5 and earns a total of $43. if the baseballs are represented by x and the volleyballs are represented by y, which of the following systems of equations can be used to calculate the number of baseballs and volleyballs sold? (5 points) x + y = 14, 2x + 5y = 43 x + y = 43, 2x + 5y = 14 x − x + y = 14, 2x + 5y = 43 x + y = 43, 5x + 2y = 14

Every rhombus is a square. true false

Which expression can be used to determine the slope of the line that passes through the points -6, three and one, -9

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.