54. Suppose that a tennis tournament has 64 players. In how many ways can the 64 players be paired to play in the first round? Assume that each player can play any other player without regard to seeding.​

Aswimming pool is a rectangle with semicircles on the end. the rectangle is 12 meters wide and 30 meters long. the diameter and width of the swimming pool are equal. sketch and label an overhead diagram of the swimming pool. find the area of the swimming pool floor.

If on=8x-8,lm=7x+4,nm=x-5,and ol=3y-6

How many times larger is 9 × 10^8 than 3 × 10^-5? a. 3 × 10^13 b. 3 × 10^-40 c. 3 × 10^-13 d. 3 × 10^3