Which equations support the fact that rational numbers are closed under addition? select each correct answer. a 13+13=23 b 9√+9√=29√ c 6√+(−6√)=0 d 2√+2√=22√

Rational Number: A rational number is one that can represented as a ratio of , such that p and q are both integers and ≠ 0. All rational numbers can Irrational Number: An irrational number is one that be expressed as a terminating or repeating decimal. (Examples: −0.5, 0, 7, 3 2 , 0.26�) cannot represented as a ratio of , such that p and q are both integers and ≠ 0. Irrational numbers cannot Irrational numbers are difficult to comprehend because they cannot be expressed easily. Consider creating a physical representation of the √2 . Create a right triangle with each leg being exactly 1 meter. The hypotenuse should then be the length of √2 meters.

The probability of picking 2 green markers is 2/10