7.3 x 9.6 =
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Which best explains why this triangle is or is not a right triangle?

In the xy-plane, if the parabola with equation passes through the point (-1, -1), which of the following must be true?

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?