Megan constructed triangle ABC. In Megan's triangle,
mZA is represented by xº, mZB is 4 times greater than
mZA, and mZC is 30° less than 5 times m ZA.
mZA= x
mZB = (4x)
m2C = (5x - 30)

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.