determine for each number whether it is irrational or rational number.

[tex] \frac{1}{2} [/tex]

[tex] \frac{ \sqrt{7} }{10} [/tex]

[tex] \frac{3\pi}{4} [/tex]

[tex] \frac{5}{9} [/tex]

[tex]18[/tex]

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trevordoyleione trevordoyleione · Answer 1 · 2018-10-24T18:39:57+02:00

rational numbers can be written as a ratio of two integers a/b

1/2 is the ratio of 1 and 2 so its rational

√7/10 is not a ratio of two integers so its irrational

3π/4 is not a ratio of two integers so its irrational

5/9 is the ratio of 5 and 9 so its rational

18 is 18/1 and is the ratio of 18 and 1 so its rational

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