Balancing equations C4H6O3+H2O >> C2H4O2

What does x = in this equation x+3+2x=x+5

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 your teacher tells you to do questions 6 through 19 in your math book for homework, how many questions is that