How do you solve for x?
1953=x(x+1)/2

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

Afrequency table of grades has five classes (a, b, c, d, f) with frequencies of 3, 13, 14, 5, and 3 respectively. using percentages, what are the relative frequencies of the five classes?

Anumber cube is rolled two times in a row. find the probability it will land on 2 on the first roll and a number greater then 4 on the second roll