In a huge chess tournament, 45 matches were played. Find out how many people were involved if it is known that each participant played one game with every other participant in the tournament.

X - (-9) = 3 what is X? Answer fast!

You have a litre bottle of water. You drink 400 millilitres. How much water is left?

A kitten weighs 4 pounds. What is the approximate mass of the kitten in kilograms

What is the formula for volume of a pyramid? What does the B stand for? Does it change?

142 cases. If the daily growth rate is 6.4%, how many days will it take for the number of cases to double

There are 207 students in 9 classes at this rate how many are in 6 classes

Suppose the long-run supply curve for a good is upward-sloping. The upward slope could be explained byA. a breakdown of the "free entry and exit" feature of competition. B.

Devin took out a 25-year loan for $70,000 at 8.7% interest, compounded monthly. What is his monthly payment? A) $548.19 B) $573.12 C) $616.37 D) $533.16

How do you write680,705 in expanded form

Which choice is true for a square? A. A square is also a rectangle and a rhombus. B. A square is also a parallelogram and a trapezium. C. A square is also a quadrilateral and a kite. D. A square is also a trapezoid and a rectangle.