What is the probability in a room of 20 people that at least 2 people have the same birthday?

2.5*10 to the negative power of 2

Suzy drinks 3 quarts of water every 4 days. How many days will it take her to drink 6 gallons of water?

Sam has a cylindrical storage container 7 inches tall with a radius of 5 inches. He wants to fill it with 500 cubic inches of cat litter. Will the cat litter fit inside the container?

Find the slope (-2,3) (-1,0). Hint: use rise/rum to find the slope

Anthony plays soccer every 3 days and lacrosse every 5 days. The last day he played both sports on the same day was on June 12th. What is the next day in June that he will play both soccer and lacrosse on the same day

Two consecutive even integers have a sum of 46. Find the integers.

The negative sign can be read as "the opposite of."

5 - (-3) = 2 6 - (-2) = 4 How can you remove negative counters form a set of positive counters? What is net effect?

A triangle has vertices at R (1, 1), S (-2,-4), and T-3, - 3). The triangle is transformed according to the rule Ro. 270". What are the coordinates of S? (-4,2) (-2, 4) (2,4) (4,-2)

Which expression has a value of 9/20?