In a large population, 55% of the people have been vaccinated. if 3 people are randomly selected, what is the probability that at least one of them has been vaccinated?

If the graphs of the linear equations in a system are parallel, what does that mean about the possible solution(s) of the system? a. there are infinitely many solutions. b. there is no solution. c. there is exactly one solution. d. the lines in a system cannot be parallel.

Name the most appropriate metric unit for each measurement

George has seven boxes of five pencils. giulio three boxes of eight pencils. one of the boys arranges all his pencils equally into two groups. was this george or giulio how many are in each group explain