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Mathematics 15 Online
OpenStudy (anonymous):

Simplify the expression, please help!!!

OpenStudy (anonymous):

\[\sqrt{9}\div \sqrt{18}\]

OpenStudy (anonymous):

Simplified version is:\[\frac{ \sqrt{9} }{ \sqrt{18} }=\frac{ 1 }{ \sqrt{2} }\]

OpenStudy (jkristia):

another way is to move it all under one squareroot, it might make it easier to understand. \[\sqrt{\frac{ 9 }{18 }} = \sqrt{\frac{ 1 }{2 }} = \frac{ \sqrt{1} }{ \sqrt{2} } = \frac{ 1 }{ \sqrt{2} }\]

OpenStudy (espex):

\[\frac{\sqrt{9}}{\sqrt{18}} \rightarrow \frac{\sqrt{3^{2}}}{\sqrt{3^{2}*2}} \rightarrow \frac{3}{3\sqrt{2}} \] gets you to the answer @4kec4 proffered earlier.

OpenStudy (anonymous):

whos right lol

OpenStudy (anonymous):

Spongebob is lol

OpenStudy (espex):

They are both the same answer, just two different methods to get there.

OpenStudy (anonymous):

\[\sqrt{100}\div \sqrt{121}\]

OpenStudy (anonymous):

?

OpenStudy (anonymous):

correct answer is: \[\frac{ 10 }{ 11 }\]

OpenStudy (anonymous):

\[8\sqrt{2}\div 2\sqrt{8}\]

OpenStudy (anonymous):

were the other ones right?

OpenStudy (anonymous):

a medal would be nice lol

OpenStudy (anonymous):

They are great spongebob lol!

OpenStudy (anonymous):

there i gave you a medal!

OpenStudy (anonymous):

one more coming your way

OpenStudy (anonymous):

alright!

OpenStudy (anonymous):

last one is:\[\frac{ 8\sqrt{2} }{ 2\sqrt{8} }=2\]

OpenStudy (anonymous):

\[\sqrt{3/4}\times \sqrt{5/2}\]

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