Each row, column, and diagonal in this math square puzzle has a sum of 15. Each number, I to 9, is used only once. Write and solve equations to complete the math square puzzle.

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