You have a jar of marbles. there are 15 red, 20 blue,7 green, and 18 red marbles. you choose one at random then replace it and choose another. what is the probability of both being blue?

How do i work this problem out using the equation a=pe^rt

Compare these two waves: the blue and orange waves have the same pitch, but the blue wave is louder. the blue and orange waves have the same volume, but the blue wave has a higher pitch. the orange wave has a higher pitch, but the blue wave is louder. the blue wave has a higher pitch, but the orange wave is louder.

Let f(x) = 3 − x . find the average rate of change of f(x) from x = a to x = a + h and simplify your answer so that no single factor of h is left in the denominator.