Rational
Rational
The square root of 15 is an irrational number and it is about 3.873 rounded to three decimal places
'-3' is RATIONAL. IRRATIONAL numbers are those where the decimals go to inifinity AND there is no regular order in the decimal digits. e.g. pi = 3.141592..... is IRRATIONAL but 1/3 = 0.3333.... is RATIONAL. NB Both go to infinity, but '1/3' has the decimals in a regular order .
Yes, but not always. An easy example is sqrt(2) + sqrt(2) + sqrt(2) = 3sqrt(2), an irrational number. An easy counterexample is 2sqrt(2) + -sqrt(2) + -sqrt(2) = 0, which is rational.
Rational
Integers are rational. In the set of real numbers, every number is either rational or irrational; a number can't be both or neither.
No, it is rational.
No, it is rational.
The sum of the three can be rational or irrational.
no
no
-2 and 3/11 is a rational number because it can also be expressed as an improper fraction.
No, it is an irrational number.
Rational
3 is natural number, a whole number, an integer, a terminating decimal, and a rational number. It is not an irrational number.
No because 4/3 is a rational number