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Mathematics 9 Online
OpenStudy (anonymous):

evaluate.

OpenStudy (anonymous):

\[3\sqrt{729}\]

Parth (parthkohli):

Do you know what \(\sqrt{729 }\) is?

Parth (parthkohli):

\(\sqrt{729} = \sqrt{3^6} = (3^6)^{1 \over 2}\)

Parth (parthkohli):

Does that give you a good hint? Also, multiply 3 to the result you get.

OpenStudy (anonymous):

i dont get how to do it since in the choices there is 'undifined' too..

Parth (parthkohli):

Did you get the earlier reply I gave you?

OpenStudy (anonymous):

3?

OpenStudy (anonymous):

do u need the cube root

Parth (parthkohli):

No. \((3^6)^{1 \over 2} = 3^{6 \times {1 \over 2}}\)

OpenStudy (anonymous):

9*9*9 = 729

OpenStudy (anonymous):

9 ya?

Parth (parthkohli):

Nope. What's \(6 \times {1 \over 2}\) according to you?

OpenStudy (anonymous):

3

Parth (parthkohli):

Great job! What is \(3^3\)?

OpenStudy (anonymous):

27? is that a 3^3?

OpenStudy (anonymous):

i see it as 3^2

Parth (parthkohli):

Yes.

Parth (parthkohli):

It's 3^3.

Parth (parthkohli):

And that's right! 27! In the beginning, they asked to multiply 3 to the result you get. What is 3 * 27?

OpenStudy (anonymous):

is that a multiply sign?

Parth (parthkohli):

Yeah.

OpenStudy (anonymous):

81??

Parth (parthkohli):

That's correct! You got it!

OpenStudy (anonymous):

thankyou!!!

Parth (parthkohli):

You're welcome :)

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