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Algebra 15 Online
OpenStudy (anonymous):

Is it true that a number raised to a negative exponent is always negative?

OpenStudy (misty1212):

HI!!

OpenStudy (anonymous):

No..it moves the decimal place over.

OpenStudy (misty1212):

do you know what \[2^{-3}\] is ?

OpenStudy (misty1212):

@iGreen. moves the decimal place over???

OpenStudy (misty1212):

i guess so if the base is ten

OpenStudy (anonymous):

Sorry I mean it makes it a decimal..

OpenStudy (misty1212):

@homocidalmuffin23 \[b^{-n}=\frac{1}{b^n}\] so NO not negative, means take the reciprocal

OpenStudy (misty1212):

@iGreen. makes it a decimal??!

OpenStudy (anonymous):

If the base is negative, I guess it'll be negative.

OpenStudy (misty1212):

yikes

OpenStudy (misty1212):

any number can be written as some kind of decimal even \[\left(\frac{1}{2}\right)^{-3}=8\]

OpenStudy (anonymous):

\(\color{blue}{\text{Originally Posted by}}\) @misty1212 i guess so if the base is ten \(\color{blue}{\text{End of Quote}}\) Err..I don't think that's true.. \(10^{-2} = 0.01\)

OpenStudy (misty1212):

@iGreen. that was a response to your reply that it moves the decimal over

OpenStudy (misty1212):

yes, it does if the base it ten

OpenStudy (anonymous):

It does what..?

OpenStudy (anonymous):

Oh, nevermind..

OpenStudy (anonymous):

\(2^{-3} = 0.125\) Not sure what you mean??

OpenStudy (misty1212):

lord help us

OpenStudy (anonymous):

Oh forget it..

OpenStudy (misty1212):

any number can be written as some kind of decimal, repeating, or not repeating

OpenStudy (misty1212):

you comment about a negative exponent moving the decimal place over makes no sense

OpenStudy (anonymous):

Is it a Yea no or sometimes?

OpenStudy (anonymous):

im pretty sure its a negative

OpenStudy (misty1212):

it is NOT negative

OpenStudy (misty1212):

\[(-2)^{-3}=-\frac{1}{8}\] is negative, but \[2^{-3}=\frac{1}{8}\] is positive

OpenStudy (anonymous):

the number is the factor so which is not negative, the exponent is negative so that makes the number negative

OpenStudy (anonymous):

if the number and the exponent were negative then the number would be postive

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