There are 30 red marbles and 19 blue marbles in a jar. you randomly pick 3. what is the probability that you pick at least 2 red marbles?

What properties allow transformation to be used as a problem solving tool

You are designing a rectangular pet pen for your new baby puppy. you have 30 feet of fencing you would like the fencing to be 6 1/3 feet longer than the width

It is given that the quadratic equation hx²-3x+k=0, where h and k are constants, has roots [tex] \beta \: and \: 2 \beta [/tex]express h in terms of k