(1) Deduce the value of the ‘n’ in each of the following: (a) 0.0035² = 1.225 × 10ⁿ
(b) 0.04³ = 6.4 × 10ⁿ

(2) Write the answers to the following calculations in standard form:
(a) ( 2.4 × 10⁸ ) ÷ ( 9.6 × 10² )
(b) (2.8 × 10⁵) × ( 2.0 × 10³ )

(3) Evaluate the following without the use of calculator:
(a) 27³ / 3³ (b) 25² × 5²

What is the measure of angle tvu shown in the diagram below

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.

Write an inequality and solve each problem. for exercises 11 and 12, interpret the solution.