Question

Select all combinations of the following numbers that when added together would be rational.

−6, 32√, 23, 13, 7√

Question 6 options:

−6 and 23

32√ and 23

23 and 13

13 and 7√

Answer 1

@Ms-Brains

Answer 2

i think 1/3, and 2/3

Answer 3

@rebeccaxhawaii

Answer 4

Gimme 1 sec

Answer 5

ok

Answer 6

I'm not sure about this one, I think it's A. but I am not 100% sure. Let's see what @Hurgleman thinks. :)

Answer 7

You would find any irrational number by looking for a few things.
1 - is the number whole? No whole number is irrational.
2 - Does the decimal point value repeat infinitely, or continue infinitely?
This is easy to find with squares. Prime numbers, and numbers that don't have perfect squares often come out to be irrational (though I'm not certain if imperfect squares are always irrational. It's been a while)

So any whole numbers added together will always rational.

http://www.onlinemathlearning.com/image-files/numbers8.gif

Here's a good chart on real numbers. :)

Answer 8

As a result, answers A and C are both rational.