Find the coordinates of the midpoint of the segment
whose endpoints are H(10, 7) and K(8, 11).

Bring the fraction a/a-4 to a denominator of 16-a^2

60 musicians applied for a job at a music school. 14 of the musicians play both guitar and drums, 28 play drums, 18 play the guitar. what is the probability that the applicant who gets the job plays drums or guitar?

Suppose the equation ||x-a|-b|=2008 has 3 distinct real roots and a not =0. find the value of b.