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Mathematics 14 Online
OpenStudy (theedwardsfamily):

Help.

OpenStudy (anonymous):

Questions?

OpenStudy (theedwardsfamily):

one sec

OpenStudy (theedwardsfamily):

here it is. @kieran01pd2016

OpenStudy (theedwardsfamily):

@texaschic101 @MadisonEmery

OpenStudy (theedwardsfamily):

@Michele_Laino @triciaal

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)

OpenStudy (michele_laino):

correct! it is N=3

OpenStudy (theedwardsfamily):

Whoop! thanks

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