It seems like you're asking to simplify the expression \( \frac{3}{\sqrt{15}} \).

To rationalize the denominator, we can multiply both the numerator and the denominator by \( \sqrt{15} \):

\[
\frac{3}{\sqrt{15}} \times \frac{\sqrt{15}}{\sqrt{15}} = \frac{3 \times \sqrt{15}}{15} = \frac{\sqrt{15}}{5}
\]

So, \( \frac{3}{\sqrt{15}} \) simplifies to \( \frac{\sqrt{15}}{5} \).

Would you like more details or have any questions?

Here are 5 related questions:
1. How do you rationalize other fractions with square roots in the denominator?
2. What is the square root of 15 approximated to three decimal places?
3. How do you simplify expressions involving square roots?
4. What is the process of simplifying the square root of a product, like \(\sqrt{ab}\)?
5. Can you simplify \( \frac{4}{\sqrt{20}} \) in a similar way?

**Tip:** When simplifying square root expressions, rationalizing the denominator helps to remove the square root from the denominator.

Learn how to simplify the expression 3 divided by square root of 15. This problem involves rationalizing the denominator and simplifying fractions with square roots. Suitable for high school students studying algebra and advanced arithmetic.

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