Which best describes the relationship between the successive terms in the sequence shown?

9, –1, –11, –21, …

athe common difference is –10.
bthe common difference is 10.
cthe common ratio is –9.
dthe common ratio is 9.

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.

Identify one charcteristic of exponential growth

Look at triangle wxy what is the length (in centimeters) of the side wy of the triangle?