Find the value of k so that x = -1 and y =-1 is a solution of the linear equation 9kx + 12ky = 63

5/6+7/8what is the answer sealsdbdbshd

41/17 as a decimal rounded to the nearest hundredth

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.