Li is making beaded necklaces. For each necklace, she uses 29 spacers, plus 9 beads per inch of necklace length. Write an equation to find how many beads Li needs for each necklace, where x is the length, in inches, of the necklace.

Simplify (a/b - b/a) times (a - a^2/a+b) a - a^2/a=b is a mixed number

Sanya noticed that the temperature was falling at a steady rate of 1.4 degrees every hour from the time that she first checked her outdoor thermometer. by 6 a.m., the temperature had fallen 21 degrees. which expression can you use to find how many hours earlier she had first checked the thermometer?

There are 45 questions on your math exam. you answered 810 of them correctly. how many questions did you answer correctly?