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anonymous

  • 5 years ago

log(subscript4)2x=5 solve for x! help!

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  1. amistre64
    • 5 years ago
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    log4(2x) = 5 right?

  2. anonymous
    • 5 years ago
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    mhm but the 4 is a subscrpt

  3. amistre64
    • 5 years ago
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    the 4 is the base... i know :)

  4. anonymous
    • 5 years ago
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    \[\log_ab = c \iff a^c = b \]

  5. anonymous
    • 5 years ago
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    yes ha how i sovle is

  6. amistre64
    • 5 years ago
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    log base"4" is can be written in shorthand log4

  7. anonymous
    • 5 years ago
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    k so 2x=4^5

  8. amistre64
    • 5 years ago
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    you can put a base 4 under each side right?

  9. amistre64
    • 5 years ago
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    good, just like that lol

  10. anonymous
    • 5 years ago
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    then divided by 2?

  11. amistre64
    • 5 years ago
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    now what is 4*4*4*4*4?

  12. anonymous
    • 5 years ago
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    ohhh uhh 1024

  13. amistre64
    • 5 years ago
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    is it? lol

  14. anonymous
    • 5 years ago
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    then dived 1024 by 2 = 512 so x is 512 ?

  15. amistre64
    • 5 years ago
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    16(16) = 256+4 = 1024...thats right 1024/2 = 512... x = 512. good job ;)

  16. amistre64
    • 5 years ago
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    256*4 ....my keyboard hates me

  17. anonymous
    • 5 years ago
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    THANKS YOu

  18. amistre64
    • 5 years ago
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    youre welcome, but you already had it figured out :)

  19. anonymous
    • 5 years ago
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    ha trust me if i did, i wouldnt be on here

  20. amistre64
    • 5 years ago
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    :) you did great ;)

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spraguer (Moderator)
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