10) Two supplementary angles have measures of 3x - 20 and 5x. Find x. 11) Find the perimeter of a rectangle with side lengths of 14 inches and 18 inches.
12) Find the area of a circle with a radius of 22 feet. Use 3.14 for pi.

Can someone me out here number 4 plz

Aball is dropped from a height of 10m above the ground. it bounce to 90% of its previous height on each bounce. what is the approximate height that the ball bounce to the fourth bounce?

An office supply company conducted a survey before marketing a new paper shredder designed for home use. in the survey, 80 % of the people who tried the shredder were satisfied with it. because of this high satisfaction rate, the company decided to market the new shredder. assume that 80 % of all people are satisfied with this shredder. during a certain month, 100 customers bought this shredder. find the probability that of these 100 customers, the number who are satisfied is 69 or fewer.