Rational because it is 7.
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The square root of 49 is 7, so it is rational.
No because 7 is a rational number
No. The square root of 49 is plus or minus 7, both of which are integers. And integers are rational numbers - whether they are positive or negative.
49 is a rational number
the 4th root of 49 is the square root of the square root of 49 since square root 49 =7 then simplify is square root of 7