Select all the correct answers assume these hexagons are similar. which changes will result in a pair of non similar hexagons?

a- doubling each side length in ABCDEF

b- subtracting 1 from each side length in GHIJKL

c- adding 15 degrees to angles G, H, and I and subtracting 15 degrees from angles J, K and L

d- reducing each side length in GHIJKL by one third of the original length

e- adding 3 to each side length in GHIJKL

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.

Which of the following is the result of expanding the series

Evaluate the discriminant of each equation. tell how many solutions each equation has and whether the solutions are real or imaginary. x^2 + 4x + 5 = 0