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Mathematics 10 Online
OpenStudy (imsleeziboii):

Help!!!!!!!!!!!!!!!

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.\[\frac{ \sqrt{20} }{\sqrt{20} ? }\]

OpenStudy (imsleeziboii):

Those are the choices

OpenStudy (imsleeziboii):

@phi

OpenStudy (imsleeziboii):

@dan815

OpenStudy (imsleeziboii):

@Luigi0210

OpenStudy (imsleeziboii):

Can anyone help?

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 ?

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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