Helen has a box of marbles. Of the marbles are yellow. Of the marbles are red. The rest of the marbles are blue. Helen pulls one marble out of the box at random, records its color, replaces it, and mixes up the marbles again. If she does this 200 times, how many blue marbles should she expect to pull out?

Awrestling tournament begins with 128 competitors. in the first round, each competitor has 1 match against another wrestler. the winner of each match moves on to the next round until there is a winner. write a sequence in which the terms represent the number of players still in the tournament at the end of each round. describe the sequence? how many rounds are in the tournament?

Find the height of a square pyramid that has the volume of 32 ft.³ and a base lengthof 4 feet

Find the greatest common factor of the followig monomials 21u^5v,3u^4v^6, and 3u^2v^5