The following numerically ordered sequence of numbers has a mean of 17 and a median of 18. 7, a, 12, 15, 17,5, 20, 22, 24, 25
Given this information, the values of a and b must be:
what are the values of a and b?

Which of the following represents the factorization of the trinomial below? x^2+7x-30

Solve the equation. then check your solution 8=1.88+a

Lucy is a dress maker. she sews \dfrac47 7 4 ? of a dress in \dfrac34 4 3 ? hour. lucy sews at a constant rate. at this rate, how many dresses does lucy sew in one hour? include fractions of dresses if applicable.