Two straight lengths of wire are placed on the gournd, forming vertical angles. if the mesaure of one of the angles frormed is 72 degrees, what are the measres of the other three angles? explain.

The weekly amount spent by a company for travel has an approximately normal distribution with mean = $550 and standard deviation = $40. a) what is the probability that the actual weekly expense will exceed $570 for more than 20 weeks during the next year? (note: one year = 52 weeks) b) what is the probability that actual weekly expenses exceed $580 for 10 or more, but 16 or fewer weeks during the next year?