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Mathematics
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OpenStudy (imsleeziboii):
Help!!!!!!!!!!!!!!!
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OpenStudy (imsleeziboii):
To simplify the radical below, which of the following expressions would be multiplied by the radical?
\[-3\frac{ 1 }{ 2 } * \sqrt{12}/\sqrt{20}\]
OpenStudy (imsleeziboii):
A.\[\sqrt{20}/-\sqrt{20}\]
OpenStudy (imsleeziboii):
B.\[\frac{ 1 }{ -\sqrt{20} }\]
OpenStudy (imsleeziboii):
C.\[\frac{ 1 }{ \sqrt{20}? }\]
OpenStudy (imsleeziboii):
D.\[\frac{ \sqrt{20} }{\sqrt{20} ? }\]
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OpenStudy (imsleeziboii):
Those are the choices
OpenStudy (imsleeziboii):
@phi
OpenStudy (imsleeziboii):
@dan815
OpenStudy (imsleeziboii):
@Luigi0210
OpenStudy (imsleeziboii):
Can anyone help?
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OpenStudy (phi):
multiplying by 1 is safe
which of your choices is equal to 1
(remember anything divided by itself is 1)
OpenStudy (imsleeziboii):
D.
OpenStudy (phi):
yes
OpenStudy (imsleeziboii):
okay whats the next step.
OpenStudy (phi):
the idea is they picked sqr(20) because
\[ \sqrt{a}\cdot \sqrt{a}= a \]
so in this problem , the bottom becomes what ?
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OpenStudy (imsleeziboii):
I dont understand?
OpenStudy (phi):
you already have the answer D.
I was just saying if you want to simplify the expression
what to do next.
OpenStudy (imsleeziboii):
Oh.
OpenStudy (imsleeziboii):
DO you mind helping me with one more problem?
OpenStudy (imsleeziboii):
Anyone can help?
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