An arts academy requires there to be 3 teachers for every 63 students and 5 tutors for every 60 students . How many students does the academy have per​ teacher? Per​ tutor? How many tutors does the academy need if it has 120 students​?

Which is the equation of a line perpendicular to the line with the equation 3x+4y=8

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.

What is the result of adding the system of equations? 2x+y=4 3x-y=6