No.
An irrational number is any number that is not a rational number;
A rational number is any number that can be expressed as one integer over another integer.
negative 3 over 4 is one integer (negative 3) over another integer (4), and so is a rational number.
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100/3 is a rational number
an irrarional number is a number that can't be written as a fraction or whole number. -sqrt(9)=-3 This is a whole number so it isn't irrational, just rational
Any irrational number added to 0.5 will produce an irrational number.
no, the square root of any number (like 2) which does not have an exact value in fraction form is an irrational number. 3/4 is a rational number. Any number with integers in both the numerator and denominator (except 0) is a rational number.
1) Adding an irrational number and a rational number will always give you an irrational number. 2) Multiplying an irrational number by a non-zero rational number will always give you an irrational number.