No. 1.75 is NOT an irrational number.
Rational numbers cannot be represented as a ratio of two integers.
1.75 can be represented as a ratio of the integers 175 and 100, i.e. 175/100
Note that this can be reduced to the equivalent fraction 7/4, which is a ratio of the integers 7 and 4
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It is a rational number because it can be expressed as a fraction, 175/1.
The sum of a rational and irrational number must be an irrational number.
rational * irrational = irrational.
No, 3.56 is not an irrational number. 3.56 is rational.
-Pi is irrational, because it does not terminate or repeat. Whenever you multiply an irrational number by a rational number (-1), the result is an irrational number.