The little twelve football conference has two divisions, with nine teams in each division. each team plays each of the other teams in its own division twice once. how many conference games are scheduled? (fixed a spelling error)

Achemist has 200 ml of a 10% sucrose solution. she adds x ml of a 40% sucrose solution. the percent concentration, y, of the final mixture is given by the rational function: the chemist needs the concentration of the final mixture to be 30%. how many milliliters of the 40% solution should she add to the 10% solution to get this concentration?

What is the difference between regular convex and concave polygons

The perimeter of a rectangular rug is 24 feet. the length of the rug is 1 2/5 i s width. what is the area of the rug