Is there a picture of the question?
It would be 2/4. 2/4 simplifies to 1/2.
The answer you are looking for is (7, 2).
Answer:
B= 4.6cm
Step-by-step explanation:
A= 

Ok as sqrt(x^6 + 5) approaches infinity it goes to x^3
Same with the denominator because x^3 is the highest power
On the bottom, the factor on x^3 is 4 so on the top to make the limit evaluate to 1/3, a has to be 16/9 so then when you neglect all of the other powers besides the highest, it goes to 4/3 because you take the square root and then it simplifies to 1/3