The lees have three children. the oldest is twice as old as the youngest. the middle child is five years older than the youngest. if the sum of their ages is 57, how old is each child?

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.

Which of the following constants can be added to x2 - 3x to form a perfect square trinomial?

Iknow the square root of 2 is irrational