Part 1: pizza is served in the school cafeteria every fourth school day. tacos are served every third school day. both pizzas and tacos are served today. in how many school days will pizza and tacos be served on the same day again? part 2: if the pattern continues, will pizza and tacos be served on the same day in 21 school days? explain why or why not.

Which of the following system of equation is not equal to the system of equations is not equal to the system of equations shown below

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.

Which of the following correctly justifies statement four of the two column proof? a. corresponding angles theorem b. transitive property of equality c. vertical angle theorem d. substitution property of equality