Answer:
1. irrational
2. irrational
3. rational
4. rational
5. irrational
6. rational
Explanation:
A rational number includes any whole number, fraction, or decimal that ends or repeats. An irrational number is any number that cannot be turned into a fraction.
1.) pi is a never ending number which means that, according to the definition above, it must be IRRATIONAL
2.) the line above the 46 means that it is repeating, making it IRRATIONAL
3.) the square root of 100 is 10, making it RATIONAL
4.) -16 is an integer (a whole number that can be positive, negative, or zero), making it RATIONAL
5.) the square root of 21 results in a long decimal that cannot be converted into a fraction, by the definition above, it is IRRATIONAL
6.) 10 is a whole number, making it RATIONAL