Solve the following equations by substitution x-2y=10 and y=-6x+34

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.

Find y to the nearest hundreds place