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Is pie a rational number?
No. Pie is potentially never ending. This makes it an irrational number.
Is 6.5 rational or irrational?
6.5 is a rational number because it can be expressed as a fraction
Is -9pie rational or irrational?
What is 'pie' ; the meat pie that you eat??? I think you mean 'pi' , the mathematical symbol. Please spell it correctly.!!!!! pi = 3.141592654.... is an irrational number. Casually, an IRRATIONAL number is one which the decimals go to infinity and the decimal digits are not in any regular order. Any number rattional or irrational multiplied to aN IRRATIONAL number produces an irrational result. Hen ce -9 is rational -9(3.141592654...) = -28.27433388... is irrational.
Are all real numbers rational numbers?
No. For example, pi is a real number, but it is irrational (it cannot be converted into an exact fraction).The reverse is true, however: all rational numbers are also real numbers.
Is the product of a rational number and a rational number a rational number?
yes
