Abox contains 2 red marbles, 2 green marbles, and 2 yellow marbles. carol takes 2 marbles from the box at random; then claudia takes 2 of the remaining marbles at random; and then cheryl takes the last 2 marbles. what is the probability that cheryl gets 2 marbles of the same color

Monthly water bills for a city have a mean of $108.43 and a standard deviation of $32.09. find the probability that a randomly selected bill will have an amount greater than $155, which the city believes might indicate that someone is wasting water. would a bill that size be considered unusual?

How many triangles can be drawn with side lengths 4 centimeters, 4.5 centimeters, and 9 centimeters? explain

What is the expression in factored form? -x^2 + 3x + 28 a. (x-7)(x-4) b. -(x-7)(x+4) c. (x+4)(x+7) d. -(x-4)(x+7)