Ihave 90 coins and i sold 15% of them. how many coins did i sell?

Describe the 2 algebraic methods you can use to find the zeros of the function f(t)=-16t^2+400.

Which expression converts 45 degree to radians

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?