Numbers 15 and 17
plz help as soon as possible

Answer:
15) A
17) D 3/5
Step-by-step explanation:
15) a right triangle you can use the therm A^2 + B^2 = C^2
the only one that works with that equation is A
17) 1/3 / 5/9 = .6
3/5 = .6