8. Given two concentric circles (circles that have the same center point), with the inner circle having a radius of r1 and the outer one having a radius of
r2 as shown, give a dilation that would map the inner circle onto the outer
circle. Specify both the center of dilation and the scale factor.

One side of a rectangle is 7 feet shorter than seven times the other side. find the length of the shorter side if we also know that the perimeter of the rectangle is 306 feet.

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.

The owner of the plant nursery where you were tells you to fill 350 ml bottles from a 30 l from a fertilizer