Which statement regarding polynomials and their zeros is true? f(x) = (2x2 +25)(x + a) has zeros of 25 and a f(x) = x3 - ax + 16x - 16a has zeros of 4 and a only. f(x)=x2-ax? - 9x + 9a has zeros of 23 and a f(x) = (x2 - 1)(x + a) has zeros of 1 and -c only.

In simplified exponential notation, the expression a^2•a^-3•a 1/a 0

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.

25) 56(1) = 5b a. identity property of addition b. identity property of multiplication c. commutative property of multiplication d. commutative property of addition