Find the sum of (5a^3 – 5a) and (a^2 + 2a + 14). (Simplify your answer completely.) ps. ive tried this a billion ways the answer is NOT 5a^5+10a^4+65a^3-10a^2-70a

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.

Mr. vector door is buying two new cowboy hats all together the hats cost $75.12 the second heart cost twice as much as the first hat what is the price of the more expensive at round to the nearest hundredth

Which of the following is closest to 32.9 x 7.5? a: 232 b: 259 c: 220 d: 265