Final answer:
The expression x ÷ y with x=5 and y=20 simplifies to 1/4, which is option A.
Step-by-step explanation:
To evaluate the expression where x=5 and y=20, we simply divide x by y. This gives us 5 ÷ 20, which simplifies to 1/4. Therefore, the correct answer to the expression x ÷ y with the given values is 1/4, which corresponds to option A.
By understanding the relationship between multiplication and division as reciprocals, this problem demonstrates that dividing by a number is the same as multiplying by its reciprocal. In essence, 5 divided by 20 is the same as 5 times 1/20, leading to the solution 1/4.