Convert 39 feet per minute to yards per second.

Suppose i flip two identical coins. what is the probability that i get one head and one tail?

Find the midpoint m of z1=(8+5i) and z2=(12+3i)

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.