Coulomb’s Law F = kqQr2 relates the force F between two charges q and Q, which are a distance of r units apart. Choose the formula that represents this when solved for k.

Find the average rate of change for f(x) = x2 − 3x − 10 from x = −5 to x = 10.

Need this asap if anyone can i would be very grateful. if you could show workings that would really

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?