Simplify the rational expression. state any restrictions on the variable. t^2+3t-28/t^2-16

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.

Is (0,0) a to ? ys x2 - 4 y> 2x-1

3/4 + p = 1/2? i’m not sure how to solve it