Asector of area 25 in ^2 is formed by a central angle of 4 rad. find the radius of the circle.

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.

Evaluate the expression. (9 + 5)(3 + 2)0

The two square pyramids are similar. find the total volume of both pyramids if the ratio of their surface areas is 9/16