Question

Identify the number as a regional or irrational.explain. 291.87

Answer 1

291.87 is a rational number.

Explanation:

Rational numbers are those numbers that can be expressed in fractions that is can be written as
`(p)/(q)` where p and q are integers and
`q\\eq 0`.

Consider the given number 291.87

Rewrite the decimal number as a fraction with 1 in the denominator, we get,

`291.87=(291.87)/(1)`

Multiply to remove 2 decimal places. Here, you multiply top and bottom by 10² = 100

`(291.87)/(1)=(29187)/(100)`

Thus, the above fraction can be written as,

`(29187)/(100)=291(87)/(100)`

Thus, 291.87 is a rational number.