Select the angle that correctly completes the law of cosines for this triangle. 62°
17
82 +172 – 2(8) (17)cos __ = 152
90°
15
A. 28°
B. 62
C. 180°
D. 90

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.