Please help what Is 4/5 divided by 2

Isee the amount was $90.00 then reduced to $75.00 , what is the percent ?

What are the first 4 terms in the multiplication pattern given by the formula 2×4n

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.