Given there's 5 red balls and 2 blue balls. What's the probability that after two picks we have a red ball and a blue ball

Which sum or difference identity would you use to verify that cos (180° - q) = -cos q? a.) sin (a -b) = sin a cos b – cos a sin b b.) cos (a -b) = cos a cos b – sin a sin b c.) cos (a -b) = cos a cosb + sin a sin b d.) sin (a + b) = sin a cos b + cos a sin b

Assume that y varies inversely with x. if y=1.6 when x=0.5 find x when y=3.2 acellus answer

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