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Rational numbers include integers, and any number you can write as a fraction (with integers in the numerator and denominator). Most numbers that include roots (square roots, cubic roots, etc.) are irrational - if you take the square root of any integer except a perfect square, for example, you'll get an irrational number. Expressions involving pi and e are also usuallyirrational.

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Q: Tell whether each number is rational?
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What is 240 and 30 as a rational number?

Each of the two numbers is a rational number.

Is each rational number a positive number?

Not necessarily.

What is the comparison of a rational number and a ratio?

I have no idea what "compersion" means or what you are trying to say. A rational number is so called because it can be expressed as ratio of two integers. Each rational number is a ratio and each ratio is a rational number. However, the relationship is not one of equivalence: each rational number can be represented by infinitely many equivalent ratios.

Is the number -5 a whole number an integer a rational number or a real number?

It is each one of them.

Is the difference of two rational numbers always rational?

Yes. This is the same as asking for one rational number to be subtracted from another; to do this each rational number is made into an equivalent rational number so that the two rational numbers have the same denominator, and then the numerators are subtracted which gives a rational number which may possibly be simplified.

Can you add an irrational number and a rational number?

Let `a` be a rational number and `b` be an irrational number,assume that the sum is rational. 1.a +b =c Where a and c are rational and b is irrational. 2.b=c-a Subtracting the same number a from each side. 3.b is irrational c-a is a rational number we arrived at a contradiction. So the sum is an irrational number.

Is a rational number a ratio of any two integers?

Not quite. A rational number is a ratio and each rational number is a ratio of specific pairs of integers - not ANY two integers. And, of course, 0 is not allowed on the denominator.

How can you tell whether za number is prime?

A number is prime if it only has two distinct factors.

What number divides out into 2 and five sevenths?

Each and every rational number except 0. Once you leave the domain of integers, all rational numbers (excluding 0) divide into every other rational number with a quotient that is rational. The above can be extended to real numbers.

How is each rational number alike?

They can all be represented by ratios of two integers.

Tell whether each number is a prime or composite 173911and 101?

101, 173 and 911 are all prime numbers. 173911 is not.

Can you subtract two rational numbers and get an irrational number?

Do you mean can we subtract one rational number from another rational number and get an irrational number as the difference? I'm not a mathematician, but I suspect strongly the answer is no. Wouldn't this imply that we can sometimes add a rational number to an irrational one, and get a rational number as a sum? That doesn't seem possible.Ans 2.It isn't possible. Proof :-Given two rational numbers, multiply the two denominators.Express each rational in terms of the common multiple.Algebraically add the numerators of the new rational numbers.Put this over the common multiple; there's the result expressed as a ratio.

Tell whether each number is prime or composite or neither?

In theory it is possible but in practice, if a number is a product of two very large primes - each being a hundred digits long, or larger - then it is very difficult to tell whether it is prime or composite. The fact that it is so difficult makes this characteristic particularly useful for data encryption.

Is the number 12 a natural number whole number integer rational number or an irrational number?

It is not an irrational number but is each of the others.

How are integers rational numbers?

Rational numbers are of the form n/m where n and m<>0 are integers. Since for each integer n and integer 1 we know that n = n/1, each integer is a rational number.

What does the atomic number tell you the number of in a neutral atom of an element?

The atomic number of an element is the number of protons in each atom of the element, whether neutral or not. If the atom is neutral, the number of electrons in the atom is the same as the number of protons.

Is 0.2020020002 a rational number?

That terminating decimal 0.2020020002 is a rational number and is: 2020020002/10000000000 = 1010010001/5000000000 If you mean a non-terminating decimal 0.2020020002.... where each 2 is followed by one more zero than the previous 2 then it is not a rational number.

What is a number that is real rational whole an integer and natural?

Any natural number, such as 37, will also be in each of the other categories.

What are rational numbers that have two integers?

Any 2 digit integers are rational numbers because all integers or whole numbers are rational numbers.

Can you multiply two rational numbers to get an irrational number?

Yes, for example, square root of 2 x square root of 2 = 2.* * * * *No, the product of two rational numbers must always be rational.No.Proof :If you take rational number a/b and multiply by rational c/d you get ac/bd.Since ac and bd are each integral, the product is rational.

What tell you the number of atoms of each element?


Tell you the number of atoms of each element?

Subscripts :)

What does the subscript in a formula tell you?

number of each atom

Tell whether each triangle with the givin side lengths is a right triangle?


Is 0.08008000800008... Rational?

Rational numbers are those decimals which either terminate or end in a repeating sequence of 1 or more digits. Assuming the number continues with an extra 0 before the next 8 each time then the number neither terminates nor ends in a sequence of repeating digits, thus it is not a rational number.