In a round-robin tournament with n teams, the number of games that must be played is (n^2-n) / 2. How many teams are in a round-robin tournament in which 55 games are played?

Brookes recipe says to sift together 5/8 teaspoon of baking powder with 1/3 teaspoon of salt. how many teaspoons does brookes sift altogether.

Using 3.14 for p, what is the volume of a ball with a radius of 3 centimeters?

1.063636363 repeated to a fraction?

Which notation is expressed in interval notation for x>-2? A. (-∞,-2] B. [-2,∞)

Jason wants to put a brick border around his garden. Each brick is 4 inches long. The garden measures 10ft by 20ft. Each brick costs $4.

A. A band leaves a free T-Shirt under every 6th seat at a concert. They leave a free backstage pass under every 4th Street. Which of these seat numbers get a free T-SHirt? Which Get a backstage pass? Which get both? Explain Your reasoning

Which expression is equivalent to 7w - 7z + 4w - 5z?

Angles DAB measure (4x-2) and angles BCD measures 47 degrees. find x

Which expression is equivalent to the following expression? 3 (2x + 3) 5x + 6 6x + 6 6x + 9 5x + 9

Use compatible numbers to find two estimates 33 divided by 2242