Mr. penman had 2/3 liter of salt water. he used 1/5 of a liter for an experiment. how much salt water does mr. penman have left?

In the coordinate plan (-6,9) b (3,9) c (3,3) def is shown in the coordinate plan below

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?

Jayne is studying urban planning and finds that her town is decreasing in population by 3% each year. the population of her town is changing by a constant rate.true or false?