Evaluate the given integral by changing to polar coordinates. E−x2 − y2 da d , where d is the region bounded by the semicircle x = 25 − y2 and the y−axis.

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