The algebraic expression of twelve more than four-months of a number is

Find the value of tan theta if sin theta = 12/13 and theta is in quadrant 2

Find the area of the regular hexagon if a side is 20 cm.

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.