Evaluate
\frac{13\sqrt{10}}{10}\approx 4.110960958
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\frac{13\sqrt{10}}{\left(\sqrt{10}\right)^{2}}
Rationalize the denominator of \frac{13}{\sqrt{10}} by multiplying numerator and denominator by \sqrt{10}.
\frac{13\sqrt{10}}{10}
The square of \sqrt{10} is 10.
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