“On Tuesday at lunchtime, it was 30∘C . By sunset, the temperature has dropped to 12∘C ” Write an expression to represent this situation.

12 point are triangles pqr and stu congruent? what is the congruency that proves they are congruent? what is the perimeter of triangle pqr?

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?

Which shows the correct substitution of the values a,b and c from the equation 1=-2x+3x^2+1