Which pair shows equivalent expressions?
A. 2(2/5x + 2) = 2 2/5x + 1
B. 2 (2/5x + 2) = 4/5x + 4
C. 2(2/5x + 4) = 4/5x + 2
D. 2(2/5x + 4) = 2 2/5x + 8

Which ordered pair is a solution to the system of linear equations? 2x + 3y= 6 –3x + 5y = 10

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.

Aplot of land has been surveyed for a new housing development with borders ab, bc, dc, and da. the plot of land is a right trapezoid with a height of 60 feet and an opposite leg length of 65 feet