In may the new york public library had 124,061 books checked out. of those 31,117 were mystery books. how many of the books checked out were not mystery books.

The number of potato chips in a bag is normally distributed with a mean of 71 and a standard deviation of 2. approximately what percent of bags contain between 69 and 73 potato chips? approximately 68% approximately 71% approximately 95% approximately 99.7%

Express in the simplest form: (x^2+9x+14/x^2-49) / (3x+6/x^2+x-56)

Given: klmn is a parallelogram m? n=3m? k, lf ? kn , ld ? nm kf=2 cm, fn=4 cm find: lf, ld