Arectangular stone in a piece of costume jewelry has a width of 4/5 inch and an area of 7/10 inch. is a silver wire with a length of 3 1/2 inches long enough to outline the stone? explain how you solved this problem.

The number if marbles of different colors stored in a hat is listed below: 4 red marbles 10 green marbles 7 blue marbles. without looking in the hat, dan takes out a marble at random. he replaces the marble and then takes out another marble from the hat. what is the probability that dan takes out a blue marble in both draws?