Based on this sum and using the closure property of integers what conclusion can you make about the sum of two rational numbers. explain your answer

Acircle has a diameter will endpoints of (-2,8) and (6, 4). what is the center of the circle

Jenisey has $24 to spend on seven pencils. after buying them she had $10. how much did each pencil cost.?

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?