Working together, alex and millie can file all the papers in the file cabinets in 4 hours. it would have taken alex 6 hours to do the job alone. what is the missing value in the table that represents the part of the papers that alex would file if alex and millie worked together?

Proceed as in example 3 in section 6.1 to rewrite the given expression using a single power series whose general term involves xk. ∞ n(n − 1)cnxn − 2 n = 2 − 4 ∞ ncnxn n = 1 + ∞ cnxn n = 0

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.

The measures of the legs of a right triangle are 15m and 20m . what is the length of the hypotenuse