Evaluate
\frac{13\sqrt{129}}{301}\approx 0.490536934
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\frac{39\sqrt{129}}{7\left(\sqrt{129}\right)^{2}}
Rationalize the denominator of \frac{39}{7\sqrt{129}} by multiplying numerator and denominator by \sqrt{129}.
\frac{39\sqrt{129}}{7\times 129}
The square of \sqrt{129} is 129.
\frac{13\sqrt{129}}{7\times 43}
Cancel out 3 in both numerator and denominator.
\frac{13\sqrt{129}}{301}
Multiply 7 and 43 to get 301.
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