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Irrational Numbers

An irrational number is a number that can't be expressed by a fraction having integers in both its numerator and denominator. While their existence was once kept secret from the public for philosophical reasons, they are now well accepted, yet still surprisingly hard to prove on an individual basis. Please post all questions about irrational numbers, including the famous examples of π, e, and √2, into this category.

3,962 Questions

Is 625.89 a irrational number?

No, 625.89 is not an irrational number; it is a rational number. Rational numbers can be expressed as the ratio of two integers, and 625.89 can be written as 62589/100, which fits this definition. In contrast, irrational numbers cannot be expressed as a simple fraction and have non-repeating, non-terminating decimal expansions.

Is 1.12312341234 a rational or irrational number?

The number 1.12312341234 is a rational number because it can be expressed as a fraction of two integers. Specifically, it has a finite decimal representation. Any number with a terminating or repeating decimal expansion qualifies as rational, and since this number has a finite number of decimal places, it falls into that category.

Is 8 over 9 irrational?

No, ( \frac{8}{9} ) is not irrational; it is a rational number. Rational numbers can be expressed as the quotient of two integers, and since both 8 and 9 are integers, ( \frac{8}{9} ) qualifies as rational. An irrational number cannot be expressed as a simple fraction and has a non-repeating, non-terminating decimal expansion.

Is 7.25 irrational or rational?

7.25 is a rational number because it can be expressed as a fraction. Specifically, it can be written as 725/100, which is the ratio of two integers. Rational numbers are defined as numbers that can be expressed in the form of a/b, where a and b are integers and b is not zero. Since 7.25 meets this criterion, it is classified as rational.

Is 5.87 Repeating irrational?

No, 5.87 repeating (written as 5.877777...) is not an irrational number; it is a rational number. A rational number can be expressed as the ratio of two integers, and since 5.87 repeating can be represented as the fraction 53/9, it qualifies as rational. In contrast, irrational numbers cannot be expressed as simple fractions.

Is -0.9 a irrational number?

No, -0.9 is not an irrational number; it is a rational number. Rational numbers can be expressed as a fraction of two integers, and -0.9 can be written as -9/10. Since it can be represented as a fraction, it falls within the category of rational numbers.

Is 7.2222222 rational or irrational?

The number 7.2222222 is rational because it can be expressed as a fraction. Specifically, it can be written as ( \frac{72222222}{10000000} ) or in a simpler form as ( \frac{7222222}{1000000} ). Rational numbers are defined as numbers that can be expressed as a ratio of two integers, and since 7.2222222 meets this criterion, it is classified as rational.

What The product of a non zero rational and an irrational number is irrational?

The product of a non-zero rational number and an irrational number is irrational because a rational number can be expressed as a fraction of two integers, while an irrational number cannot be expressed as a fraction. When you multiply a non-zero rational number by an irrational number, the result cannot be simplified to a fraction, as it retains the non-repeating, non-terminating nature of the irrational number. Therefore, the product remains irrational.

Is 0.2782 an irrational number?

No it is not. It can be written as a fraction, so it cannot be irrational.

Is 5.131133111 rational or irrational?

The number 5.131133111 is rational because it can be expressed as a fraction of two integers. Specifically, it can be written as 5131133111/1000000000. Since it has a finite decimal representation, it qualifies as a rational number.

Is 14.23 rational or irrational?

14.23 is a rational number because it can be expressed as a fraction of two integers. Specifically, it can be written as 1423/100, where both 1423 and 100 are integers. Rational numbers include all integers, fractions, and terminating or repeating decimals, making 14.23 fall into this category.

Is 798 an irrational number?

No, 798 is not an irrational number; it is a rational number. Rational numbers can be expressed as the quotient of two integers, and 798 can be written as ( \frac{798}{1} ). In contrast, irrational numbers cannot be expressed as a simple fraction and have non-repeating, non-terminating decimal expansions.

Is 3.456 repeating rational or irrational?

The number 3.456 repeating (often written as (3.456\overline{456})) is a rational number because it can be expressed as a fraction. Rational numbers are defined as numbers that can be written in the form ( \frac{a}{b} ), where ( a ) and ( b ) are integers and ( b \neq 0 ). Since 3.456 repeating has a repeating decimal pattern, it fits this definition.

Is 82 rational or irrational?

The number 82 is a rational number because it can be expressed as a fraction, specifically ( \frac{82}{1} ). Rational numbers are defined as numbers that can be written as the quotient of two integers, where the denominator is not zero. Since 82 meets this criterion, it is classified as rational.

Is -16.87 rational or irrational?

-16.87 is a rational number because it can be expressed as a fraction of two integers. Specifically, it can be written as -1687/100, where both -1687 and 100 are integers. Rational numbers are defined as numbers that can be represented as a fraction, and -16.87 meets that criterion.

The number 0.8 can be written as so it is an irrational number.?

The number 0.8 can be expressed as a fraction, specifically ( \frac{8}{10} ) or ( \frac{4}{5} ), which shows that it is a rational number. Rational numbers are those that can be written in the form of a fraction ( \frac{a}{b} ), where ( a ) and ( b ) are integers and ( b \neq 0 ). Since 0.8 can be represented as such a fraction, it is not an irrational number.

Is pi divided by 26 rational or irrational?

Pi (π) is an irrational number, meaning it cannot be expressed as a fraction of two integers. When pi is divided by any non-zero integer, such as 26, the result remains irrational. Therefore, π/26 is also irrational.

Which number produces an irrational number when multipled by 0.4?

Any irrational number multiplied by 0.4 will produce an irrational number. For example, if you take the irrational number √2 and multiply it by 0.4, the result, 0.4√2, will also be irrational. Thus, any irrational number you choose will suffice.

Is 0.39 rational or irrational?

0.39 is a rational number because it can be expressed as a fraction of two integers. Specifically, it can be written as 39/100, where both 39 and 100 are integers. Since rational numbers are defined as numbers that can be expressed in this way, 0.39 qualifies as rational.

What number produces a irrational number when multiplied by 0.5?

Any irrational number multiplied by 0.5 will produce another irrational number. For example, if you take the irrational number √2 and multiply it by 0.5, you get 0.5√2, which is also irrational. Thus, any irrational number, when multiplied by 0.5, will result in an irrational number.

Is 25 squared a rational or iratonal?

25 squared is 625, which is a rational number. Rational numbers are defined as numbers that can be expressed as the quotient of two integers, and since 625 can be represented as 625/1, it falls into this category.

Is 8 squared an irrational number?

No, 8 squared is not an irrational number. When you square 8, you get 64, which is a whole number and therefore a rational number. Rational numbers can be expressed as the quotient of two integers, and since 64 can be expressed as 64/1, it fits this definition.

What are covert overt conscious unconscious simple rational irrational voluntary involuntary and couple?

Covert refers to actions or processes that are hidden or not immediately observable, while overt refers to those that are visible and evident. Conscious actions are those performed with awareness, whereas unconscious actions occur without awareness. Simple actions are straightforward and uncomplicated, while rational actions are based on logic and reason; conversely, irrational actions lack logical justification. Voluntary actions are made with intention and choice, while involuntary actions happen without conscious control; "couple" typically refers to two individuals in a relationship or partnership.

Is the square root of 77 an irrational?

Yes, the square root of 77 is an irrational number. This is because 77 is not a perfect square, meaning it cannot be expressed as the square of a whole number. Therefore, its square root cannot be written as a simple fraction, which is the defining characteristic of irrational numbers.

Multiplying 8 by what number will produce an irrational number?

Multiplying 8 by any irrational number will produce an irrational number. For example, if you multiply 8 by the square root of 2 (approximately 1.414), the result, 8√2, is irrational. In general, the product of a rational number (like 8) and an irrational number is always irrational.