Is21/2anirrationalnumber? Choices: (A)yes (B)no

Definition of Irrational Number: Understand the definition of an irrational number. An irrational number is a number that cannot be expressed as a simple fraction, meaning it cannot be written as a ratio of two integers. Irrational numbers have non-terminating and non-repeating decimal expansions.Express 21/2 as Decimal: Express 21/2 as a decimal. 21 divided by 2 is 10.5, which is a terminating decimal.Determine if 10.5 is Irrational: Determine if 10.5 is an irrational number. Since 10.5 is a terminating decimal and can be expressed as a fraction (it is 21/2), it is not an irrational number.

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Is $\frac{21}{2}$ an irrational number? $\newline$ Choices: $\newline$ (A) yes $\newline$ (B) no

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Math Problems

Grade 8

Identify rational and irrational numbers

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Q. Is

\frac{21}{2}

an irrational number?

\newline

Choices:

\newline

(A) yes

\newline

(B) no

Definition of Irrational Number: Understand the definition of an irrational number. An irrational number is a number that cannot be expressed as a simple fraction, meaning it cannot be written as a ratio of two integers. Irrational numbers have non-terminating and non-repeating decimal expansions.
Express $\frac{21}{2}$ as Decimal: Express $\frac{21}{2}$ as a decimal. $\newline$ $21$ divided by $2$ is $10.5$ , which is a terminating decimal.
Determine if $10.5$ is Irrational: Determine if $10.5$ is an irrational number. $\newline$ Since $10.5$ is a terminating decimal and can be expressed as a fraction (it is $\frac{21}{2}$ ), it is not an irrational number.