Which number produces a rational number when added to 0.5?
a)sq root of 6
b) pie
c)-3.5
d)0.

ANSWER

The correct answer is


EXPLANATION

The number

is a rational number.

Since the set of rational numbers is closed under addition, the number that should be added to

should also be a rational number in order to get another rational number.

This means that, if we add a rational number to an irrational number we get an irrational number.

The only rational number in the options provided is


We add it to

to get


Note that,

Hence the result is a rational number.

As for the remaining options,


are irrational numbers, so adding them to

will not produce a rational number.

-3.5 + 0.5 = -3...which can be written as -3/1, which is rational

so ur answer is C