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Zero is useful because if we did not have the number zero then if we did the sum 7-7 then there would be no answer because the answer is zero, zero replaces and odd bits in a sum or something......

Q: Why is zero useful?

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A Benchmark Fraction.If Zero is the description of nothing then it would be a useful reference point as everything else can be clearly defined

Zero point zero zero zero zero zero zero zero zero zero zero six.

One million. One zero zero zero zero zero zero.

zero divided by 14 is zero ( zero divided by anything other than zero is always zero/)

Zero does not have a reciprocal.

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Not sure what you mean by "zero element". If an expression is equal to zero, and you can factor it, then at least one of the factors must be zero; this is often useful to solve an equation.

In most cases, physics deals with finite quantities rather than zero, but zero does come up at times. The start of an event can be measured as zero hour. A superconductor has zero electrical resistance. There are doubtlessly other cases as well. Zero is a useful concept.

If it "does not travel", the speed is zero. Not much to calculate there.

The disadvantage is that the mean deviation of a set of data is always zero and so does not provide any useful information.

Well, if you have a mixture that contains both ice and water it'll be pretty much spot zero deg Centigrade.

A Benchmark Fraction.If Zero is the description of nothing then it would be a useful reference point as everything else can be clearly defined

None. There is not really a thing as zero closing cost loans because finance companies always have that fine print that no one bothers to read which contains very useful information.

The absolute value of a number is the distance to zero. When adding which ever number has the greater absolute value will determine the sign of the answer.

zero point zero zero zero zero zero zero zero zero zero zero zero zero zero zero zero zero zero zero zero zero zero zero zero zero zero zero zero zero zero zero zero zero zero zero zero zero zero zero zero zero zero zero zero zero zero zero zero zero zero zero zero zero zero zero zero zero zero zero zero zero zero zero zero zero zero zero zero zero zero one

Nothing. It only says 'go forth and multiply' which is of course useful advice for any math student. Dividing by zero was introduced by the Indian mathematician Brahmagupta some 1,500 years ago, long after the Bible was written.

The short answer is: division by zero is undefined. If an operation is undefined, it doesn't need a symbol. If you divide a quantity by increasingly smaller numbers, the quotients will approach infinity, for which a symbol exists. Ratios involving infinitesimal quantities (which are not quite the same thing) are, on the other hand, very useful and well understood and form the basis of calculus. Dividing by an actual zero, however, isn't really very meaningful or useful. === ===

if it is equal to zero the chemical reaction is said to be at equilibrium