61. PLS HELP 13 pts + brainliest For ΔABC with A(–5, –4), B(3, –2), and C(–1, 6), M is the midpoint of
AB and N is the midpoint of BC. Find the lengths of MN and AC.

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.