thomas's shifts vary in length. He works an 8 hour shift half of the time, a 10 hour shifts third of the time, and a 12 hour shift a sixth of the time. What percent of his work days does Thomas work more than 8 hours? Explain

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.

If cos(2x) = tan^2(y), show that cos(2y) = tan^2(x).

Olivia is using 160 quilt squares to make a red, yellow, and blue quilt if 25% of the quilt are red and 30% are yellow how many quilt squares are blue