provide a counterexample to show that the statement is false. if the measure of angle AOB=75 and measure of angle BOC=15, then measure of angle AOC = 90

In which form is the following function written? y = - 2(x – 3)(x + 5)

How many real-number solutions does the equation have? -4x^2 + 10x + 6 = 0 a. no solutions b. two solutions c. infinitely many solutions d. one solution

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?