HELP!! Please and Thank You! :)

Thompson and thompson is a steel bolts manufacturing company. their current steel bolts have a mean diameter of 127 millimeters, and a variance of 36. if a random sample of 35 steel bolts is selected, what is the probability that the sample mean would differ from the population mean by greater than 0.5 millimeters? round your answer to four decimal places.

The measures of the legs of a right triangle are 15m and 20m . what is the length of the hypotenuse

Tom travels between the two mile markers shown and then finds his average speed in miles per hour. select the three equations that represent this situation.