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Mathematics 7 Online
OpenStudy (anonymous):

Help With Irrational Square roots!!!

OpenStudy (anonymous):

C?

OpenStudy (anonymous):

@SolomonZelman @iGreen @triciaal @Music_me @Michele_Laino

OpenStudy (anonymous):

I'm pretty sure its C.

OpenStudy (anonymous):

@mathteacher1729 can you help me?

OpenStudy (anonymous):

@misty1212 !!!!help!!!

OpenStudy (mathteacher1729):

Hint: Write 18 as 9*2 so your problem is: \[ \sqrt{18}=\sqrt{9\cdot 2} =\sqrt{9}\sqrt{2} \] I'll leave the rest to you. :)

OpenStudy (anonymous):

A

OpenStudy (anonymous):

OH MY JOSH!!!! You Are a Great juggler!!!!! that is talent!!!

OpenStudy (anonymous):

Is it A?

OpenStudy (mathteacher1729):

It's not A, because the square root of 9 is not equal to 9. (thanks for the juggling compliment!) :)

OpenStudy (anonymous):

B?

OpenStudy (michele_laino):

hint: \[\large 18 = 2 \times {3^2}\]

OpenStudy (anonymous):

Oh!!! D?

OpenStudy (michele_laino):

are you sure?

OpenStudy (anonymous):

Why is it taking everyone so long to respond?

OpenStudy (anonymous):

Sorry c

OpenStudy (anonymous):

flip it around!

OpenStudy (michele_laino):

that's right!

OpenStudy (anonymous):

OpenStudy (michele_laino):

it is the option C

OpenStudy (michele_laino):

I referred to the previous exercise, of course

OpenStudy (michele_laino):

here we have: \[\large 108 = 3 \times {6^2}\]

OpenStudy (anonymous):

last one!

OpenStudy (michele_laino):

it is:\[6\sqrt 3 \]

OpenStudy (michele_laino):

for the previous exercise, namely: \[\sqrt {108} = 6\sqrt 3 \]

OpenStudy (michele_laino):

here, we have: \[192 = 3 \times {8^2}\]

OpenStudy (anonymous):

ok...

OpenStudy (anonymous):

Is it B?

OpenStudy (michele_laino):

ok!

OpenStudy (anonymous):

So its B?

OpenStudy (anonymous):

@Michele_Laino

OpenStudy (michele_laino):

that's right!

OpenStudy (anonymous):

can u help with some more?

OpenStudy (michele_laino):

yes!

OpenStudy (anonymous):

OpenStudy (anonymous):

Are you still there?

OpenStudy (michele_laino):

hint:the area A of a square is given by the subsequent formula: \[A = {L^2}\] where L is its side, so we have: \[L = \sqrt A = \sqrt {46} = ...?\]

OpenStudy (anonymous):

Ive got to go somewhere real quick.Will you be here in 10-15 min?

OpenStudy (michele_laino):

ok!

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