X + 3y = 18 -x-4y=-25

How do you convert 1.27 to a percentage

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

Pls the last one and it has to be like number 6