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4 years ago

How to simplify the square root of 3 over the square root of 21

Mathematics

2 answers:

Alika [10]4 years ago

7 0

3 * 7 = 21, so

$\sqrt{21}=\sqrt{3\cdot7}=\sqrt3\sqrt7$

Then

$\dfrac{\sqrt3}{\sqrt{21}}=\dfrac1{\sqrt7}$

and you can rationalize the denominator to write this as

$\dfrac1{\sqrt7}\cdot\dfrac{\sqrt7}{\sqrt7}=\dfrac{\sqrt7}7$

Ivanshal [37]4 years ago

6 0

answer: √3⋅√21 = 3√7

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<h3>What are ratios?</h3>

Ratios are numerical relationships between variables that show how much each variable is contained in another.

Ratios are stated in fractions, percentages, or decimals.

<h3>Data and Calculations:</h3>

Total songs to include in the song = 20

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<h3>Question Completion:</h3>

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