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OpenStudy (anonymous):
Questions?
OpenStudy (theedwardsfamily):
one sec
OpenStudy (theedwardsfamily):
here it is. @kieran01pd2016
OpenStudy (theedwardsfamily):
@texaschic101 @MadisonEmery
OpenStudy (theedwardsfamily):
@Michele_Laino @triciaal
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OpenStudy (welshfella):
use the rule of indices
(x^a)^b = x^(ab)
OpenStudy (anonymous):
Bascially, when you put an exponent on an exponent they multiply.
So if you have (2^2)^3, it is the same as writing 2^6.
Therefore, in this case, what times -5 would give you -15
OpenStudy (welshfella):
in your problem the exponent multiplies the -5 to get -15
OpenStudy (michele_laino):
If we apply the rule of power of power, we can write this:
\[\Large {\left( {{2^{ - 5}}} \right)^N} = {2^{ - 5 \cdot N}} = {2^{ - 15}}\]
and then we have to solve this equation:
\[\Large - 5 \cdot N = - 15\]
please solve that equation for N
OpenStudy (theedwardsfamily):
so...what you're saying is that 3 will be the answer? (accordinng to my work)
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