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pratu043

Find the value of x.

  • one year ago
  • one year ago

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  1. pratu043
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    |dw:1342255753830:dw|

    • one year ago
  2. ganeshie8
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    hint : 128 = 2^7 8 = 2^3

    • one year ago
  3. georgeblue22
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    (2^x)*(8^x) = 128 (2^x)*(2^3x) = 128

    • one year ago
  4. pratu043
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    |dw:1342255885720:dw|

    • one year ago
  5. georgeblue22
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    solve 4x = 7

    • one year ago
  6. pratu043
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    |dw:1342255920219:dw|

    • one year ago
  7. pratu043
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    x = 7/4. Sorry, I actually knew this but didn't realise that 128 = 2^7.

    • one year ago
  8. ganeshie8
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    np :)

    • one year ago
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spraguer (Moderator)
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