What composite transformations could be used to have triangle 1 turn into triangle 2? picture is inserted

Triangle knm is what is true about the sides of knm

Ijust need these 2 questions answered (the second pic is just confirmation i'm not confident in that answer)

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)