Suppose that circles a and b have a central angle measuring 100°. additionally, the length of the intercepted arc for circle a is 35 9 π meters and for circle b is 25 3 π meters. if the radius of circle a is 7 meters, what is the radius of circle b? a) 9 meters b) 12 meters c) 15 meters d) 18 meters

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.