The length of a rectangle is 5 meters less than 3 times the width. the perimeter is 46 meters. find the width.

Name the most appropriate metric unit for each measurement like the mass of cow

Standard deviation of 19,29,21,22,23

There are three bags: a (contains 2 white and 4 red balls), b (8 white, 4 red) and c (1 white 3 red). you select one ball at random from each bag, observe that exactly two are white, but forget which ball came from which bag. what is the probability that you selected a white ball from bag a?