Clare asks Andre to play the following number puzzle: Pick a number
Add 2
Multiply by 3
Subtract 7
Add your original number

Andre’s final result is 27. Which number did he start with? Explain how you determined your answer.
Number:

Explanation:

Need on this geometry question. explain how you did it.

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 the sales price of a dvd is $20 and the markup is 34%, what is the cost of the dvd?