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?

6. Construct Arguments Gia researches online that her car is worth $3,000. She hopes to sell it for 85% of that value, but she wants to get at least 70%. She ends up selling it for $1,800 Did she get what she wanted? Justify your answer.

What percent of 104 is 26

How do you average percentages?

The line a bus arrives at the bus stop every 25 minutes, and the line b bus arrives every 15 minutes. Both are at the stop right now. On how many will both be at the bus stop again

Find the median of each set of data. 12, 8, 6, 4, 10, 1 6, 3, 5, 11,2, 9,5, 0 30, 16, 49, 25

The actual distance between two villages is 120 kilometers. On a map of the area, 0.5 centimeter represents 2 kilometers. What is the distance between the villages on the map?

You buy 5 tickets to a concert for you and your friends. You pay $170, including a $20 service charge. How much does one ticket cost?

What is 1.2 % of 0.5?

Jeff can win the game if he rolls 11 on the two number cubes. If he rolls an even sum, however, he will lose his next turn. What is the probability that he will win the game? What is the probability that he will lose his next turn?

Suppose 60 cars start at a car race. in how many ways can the top 3 cars finish the race?