Answer:
5/2
Step-by-step explanation:
Possible rational roots are ...
±(divisor of 9)/(divisor of 2)
So, the possibilities are ...
±1/2, ±1, ±3/2, ±3, ±9/2, ±9
The one on your list that is not among these is 5/2.
5/2 is not a possible rational root.
Answer:

Step-by-step explanation:
the answer is :- .

Letter C. Is correct I think, hope this helped.
The sum of measures of angles A and B is 90°
Hence the angles are complementary
- As complementary angles have sum 90°