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Anni [7]
3 years ago
6

Please help I can’t afford to fail this quiz again

Mathematics
1 answer:
Sedbober [7]3 years ago
4 0

Answer: ((\sqrt{5})(\sqrt{11}) + (\sqrt{5})(\sqrt{3} ))/8 (The 2nd option)

Step-by-step explanation:

Rationalizing the denominator, we get:

\frac{5}{\sqrt{11} - \sqrt{3}}  multiplied by \frac{{\sqrt{11}+\sqrt3}}{{\sqrt{11}+\sqrt3}} as the bottom comes to equal 8. Then, you distribute the 5 over the numerator to get the desired.

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The given triangle is a <em><u>Right angled triangle</u></em>,

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{c}^{2}  =  {12}^{2}  + 9 {}^{2}

=》

{c}^{2}  = 144 + 81

=》

{c}^{2}  = 225

=》

{c} =  \sqrt{225}

=》

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