Question

What number produces a rational number when added to 0.5​

Answer 1

-3 bc it is a rational number and when you add -3.5 + 0.5 = -3.0

Answer 2

0.5 is a rational number. To keep the sum rational, the addend must also be rational. The square root of a number which is not itself a perfect square is irrational, so A cannot be the answer, because the sum would be irrational. B is a rational number and therefore when added to 0.5 produces another rational number, 0.75.