# How to Tell That a Number Is Rational?

The easiest way to tell if a number is rational or not is to attempt to express it as a fraction. If you can, then the number is rational. If not, then the number is irrational. According to Math I...
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http://www.ehow.com/how_8334976_tell-number-rational.html

## What does it mean for a number to be rational?

A rational number is any number that can be expressed by a simple fraction. Four, for example, is written as 4/1; 0.75 is 3/4. Numbers that can't be turned into simple fractions are irrational. Wit...
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http://www.answerbag.com/q_view/2082518

## Is 0 a rational number?

Yes. A rational number is any number that can be expressed as a whole number, fraction or mixed number. Zero can be expressed as "0" or "zero," or as a fraction such as 0/2. Pi is an example of an ...
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http://www.answerbag.com/q_view/2110011

## What is rational adaptation?

Rational adaptation is the ability of a person's cognitive system to react in a rational way to outside stimuli. The study of rational adaptation monitors predicted behaviors and analyzes alternat...
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http://www.answerbag.com/q_view/2202821

## How to Graph Rational Polynomials?

Polynomials in school algebra usually have exponential terms. This means that there will be an "x^2, "3x^3," or similar term somewhere in the formula. The polynomials that you graph are usually giv...
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http://www.ehow.com/how_8476723_graph-rational-polynomials.html