Suppose you have a square matrix a for which det (a)? o. tell whether each of the following is true or false. support your answer (a) (2 points) a-1 exists (b) (2 points) a is invertible (c) (2 points) ar-0 has exactly one solution (d) (2 points) at has no solution. (e) (2 points) the reduced row echelon form of a has a row of zeros in (f) (2 points) the columns of a are linearly independent

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.

Mia’s gross pay is 2953 her deductions total 724.15 what percent if her gross pay is take-home pay

Find the area of the shaded region.