Rearrange the equation
a = 10
to make b the subject.​

Add the two expressions 3.8b - 7 and 2.9b + 9 enter your answer in simplified form

Can someone me with these two circle theorem questions asap?

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?