Which phrase describes an unknown or changeable quantity/
a. 15 years of schooling
b. 3 dollars and 76 cents
c. 2 times the number of pages in the books
d. 60 seconds multiplied by 5

4. find the geometric mean of 4 and 12. 24 8

Find the power set of each of these sets, where a and b are distinct elements. a) {a} b) {a, b} c) {1, 2, 3, 4} show steps

(05.02) mr. morris is going to save money and replace his sailboat's mainsail himself. he must determine the area of the mainsail in order to buy the correct amount of material. calculate the area of the parallelogram to determine how much material should be purchased. be sure to explain how to decompose this shape into rectangles and triangles. describe their dimensions and show your work.