Maria list ten multiple of four starting with 4 George list ten multiple of seven starting with 7 with multiple is in both of their list

If cos(2x) = tan^2(y), show that cos(2y) = tan^2(x).

Which expression and diagram represent “renee biked four times as far this month as last month”?

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?