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TheEdwardsFamily

  • one year ago

Help.

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  1. anonymous
    • one year ago
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    Questions?

  2. TheEdwardsFamily
    • one year ago
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    one sec

  3. TheEdwardsFamily
    • one year ago
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    here it is. @kieran01pd2016

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  4. TheEdwardsFamily
    • one year ago
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    @texaschic101 @MadisonEmery

  5. TheEdwardsFamily
    • one year ago
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    @Michele_Laino @triciaal

  6. welshfella
    • one year ago
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    use the rule of indices (x^a)^b = x^(ab)

  7. anonymous
    • one year ago
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    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

  8. welshfella
    • one year ago
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    in your problem the exponent multiplies the -5 to get -15

  9. Michele_Laino
    • one year ago
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    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

  10. TheEdwardsFamily
    • one year ago
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    so...what you're saying is that 3 will be the answer? (accordinng to my work)

  11. Michele_Laino
    • one year ago
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    correct! it is N=3

  12. TheEdwardsFamily
    • one year ago
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    Whoop! thanks

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