Rewrite 3/10 as a fraction that could easily be added to 21/100

The equation respenting the left table is

The human resources manager at a company records the length, in hours, of one shift at work, x. he creates the probability distribution below. what is the probability that a worker chosen at random works at least 8 hours? probability distribution px(x) 6 hours 7 hours 8 hours 9 hours 10 hours 0.62 0.78 пол

Which of these tools or constructions is used to inscribe a hexagon inside a circle?