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Earn +20 ptsQ: What is a requirement for a number to a rational number?
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Continue Learning about Math & Arithmetic
Why does every rational number have an additive inverse?
It is a fundamental requirement of algebraic structures called groups.
Why do you only have to get rid of the imaginary number in the denominator when dividing by imaginary numbers?
It is not a requirement. However, it is easier to divide mentally if the denominator is a rational number.
Is a rational number always a rational number?
As much as, in these days of uncertainty, anything can be anything. As long as the constraints of a rational number are kept to, a rational number will always remain a rational number.
Is the sum of a rational number and a rational number rational?
Yes.
Can you multiply an irrational number and a rational number to get a rational number?
Yes, but only if the rational number is 0.
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