4. Solve the following system of equations: y - 3x + 15 = 10 6 - 4x = y

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

What is sin 7x/4 ? i need on this urgent trig

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.