The answer would be A. 50 check the pdf for work.
Answer:

Step-by-step explanation:
triángulo 30°-60°-90°








Simplify 8/10
(4*2)/(5*2)
2/2=1
Thus,
8/10=4/5
Now, compare 4/5 and 3/5.
Hope this helps!
The answer is D, the ordered pair (5,3)
100 is the common denominator so
70/100 + 20/100 90/100 = 9/10