Hey this is my last question for my homework and i need

He that is measured at 220° is a reflex angle. the opposite angle is obtuse. find the measure of obtuse .

Solve this system of equations. 12x − 18y = 27 4x − 6y = 10

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.