AB, BC and CD are three sides of a regular polygon with centre O. ABX is a straight line.
Angle BCD = 140°
() Calculate the size of each of the angles marked v, w, x, y and z.

Please help 23 points and I’ll give brainliest

Which graph represents an even function?

Two times a number plus three times another number equals 4. three times the first number plus four times the other number is 7. find the numbers

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.