You and your friend are selling tickets for the orchestra concert. onthursday, you sold 15 tickets and your friend sold 10 tickets. a. what percent of the tickets sold on thursday did you sell?

What are the measures of angles a, b, and c? show your work and explain your answers. 25 points

Anew test for ra is being developed. the test is administered to 750 patients with ra and 750 without ra. for the sake of the question, assume the prevalence of ra in this population is 50%. of the 750 patients with ra, 575 have a positive result. of the 750 patients without ra, 150 have a positive result. what is the positive predictive value of the new test? a575/(575+150) b. 600/(600+ 150) c. 575/(575+125) d. 600/(600+ 125)

3c2 + 2d)(–5c2 + d) select all of the partial products for the multiplication problem above.