A bag contains 1 red, 1 blue and 3 yellow marbles. You will reach into the bag and draw a marble without looking. How many times would you expect to draw a yellow marble if you pick a marble 30 times?

In exponential growth functions, the base of the exponent must be greater than 1,how would the function change if the base of the exponent were 1? how would the fiction change if the base of the exponent were between 0and 1

Atriangular field has sides of lengths 21, 39, and 41 yd. find the largest angle. (round your answer to the nearest degree.)

The sum of the speeds of two trains is 720.2 mph. if the speed of the first train is 7.8 mph faster than the second train, find the speeds of each.