There are 20 players in a table tennis competition. each player must play exactly one match against every other player. how many matches are there in the competition?

You bought 15 one gallon bottles of apple juice for a school dance. The apple juice was on sale for $1.50 per gallon bottle. The orange juice was $2 per gallon bottle. You spent $26. Write algebraic models for the situation.

8a + 12a - 7b - 9b - 11a How to combine like terms

Use pi = 3 calculate the area of a circle with diameter of 16m

How do i do this problem 6 5/12 - 2 1/12

L (d) = 55+d what is the length after 13 days?

2p - 1/q = r/q + 4, subject q

Solve the equation using the quadratic formula: 2x^2-5x+2=0

Convert the measurement as indicated 53qt = __ gal __ qt

Which number is the greatest absolute value? Pick an answer: - 12,10,-8, or 6

What is 5 days 6 hours 20 minutes minus 3 days 8 hours 40 minutes