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If 813 = 2z, then z =

If 813 = 2z, then z =


(A) 10
(B) ...
(C) ...
(D) ...
(E) ...

*This question is included in Nova Math - Diagnostic: Test / Review

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Posted: 02/29/2012 17:49
I really dony get this ok please help
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Posted: 02/29/2012 20:19
Here is a walkthrough. Remember when an exponent is raised to another power, you multiply the powers, in this case 3x13.
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Posted: 03/26/2012 13:56
My question here is, do we automatically write the number in exponent form like the way the 8 is broken down? Is this a way that we simplify the equation?
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Posted: 03/26/2012 16:16
Jeremy, thanks for posting and using the app. That is indeed the quickest way to simplify the equation, by recognizing that 8 is actually 2 raised to the power of 3.
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Posted: 12/12/2012 12:54
8=2^3, then 3 is multiplied by 13 and we get 39, the value of z.
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