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OpenStudy (anonymous):
What is the simplified form of the reciprocal of negative squaroot 48?
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OpenStudy (anonymous):
\[-\frac{1}{\sqrt{48}}\]
\[-\frac{1}{\sqrt{16\times 3}}\]
\[-\frac{1}{4\sqrt{3}}\]
\[-\frac{1}{4\sqrt{3}}\times \frac{\sqrt{3}}{\sqrt{3}}\]
OpenStudy (anonymous):
\[-\frac{\sqrt{3}}{12}\]
OpenStudy (anonymous):
ur smart... i feel so dumb
OpenStudy (anonymous):
you get used to doing these. multiply top and bottom by radical to get it out of denominator
OpenStudy (anonymous):
Can you help me with this problem....
Simplify: squareroot of 0.6
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OpenStudy (anonymous):
always look for a perfect square inside radial.
\[\sqrt{50}=\sqrt{25\times 2}=5\sqrt{2}\]
OpenStudy (anonymous):
yes.
OpenStudy (anonymous):
\[\sqrt{.6}=\sqrt{\frac{6}{10}}=\sqrt{\frac{3}{5}}\]
OpenStudy (anonymous):
now rationalize the denominator
\[\frac{\sqrt{3}}{\sqrt{5}}\times\frac{\sqrt{5}}{\sqrt{5}}=\frac{\sqrt{15}}{5}\]\]
OpenStudy (anonymous):
do you know how to solve this one?
If 3x + 4y = 7 and 2x-3y=67 then which of the following is the value of xy?
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OpenStudy (anonymous):
sure you have to solve the system and then multiply
OpenStudy (anonymous):
can you solve this system?
OpenStudy (anonymous):
wait what do you mean by solving the system and multiplying
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