When I solve for variables but there is no answer how do I solve/estimate?

Suppose that 681 tennis players want to play an elimination tournament. That means: they pair up, at random, for each round; if the number of players before the round begins is odd, one of them, chosen at random, sits out that round.

A company makes wax candles shaped like rectangular prisms. Each candle is 5 cm long, 4 cm wide, and 15 cm tall. If the company used 5100 cm of wax, how many candles did they make?

How many sides does a regular polygon have if it's central angle is 35 degrees?

Let f (x) = 12/4x+2 find f (-1) A. - 6 B. - 2 C. 2 D. 6

Which product is irrational? √10 * √8 √2 * √50 √9 * √49 √65 * √4

Emily's dog weighs 5 times as much as Alden's dog. Together, the dogs weigh 48 pounds. How much does Emily's dog weigh?

Myra wants to save at least $500 by the end of her summer vacation. She currently has $350 saved. She can earn $25 cutting a lawn in her neighborhood.

Describe reliable financial information

The volume of a cylinder is approxamately 88 cm³. If the height is 7 cm what is the radius (use 3.14=pi) A 2 cm B 3 cm C 4 cm D 5 cm

Find the range of the data. scores: 84, 83, 80, 95, 99, 95, 83, 83, 92, 84