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anonymous

  • one year ago

What is the simplified expression for 4 power 4 multiplied by 4 power 3 over 4 power 5? 40 41 42 43

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  1. anonymous
    • one year ago
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    help

  2. UsukiDoll
    • one year ago
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    is this your question? |dw:1438122604198:dw|

  3. anonymous
    • one year ago
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    yes @UsukiDoll

  4. mathstudent55
    • one year ago
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    |dw:1438122633346:dw|

  5. mathstudent55
    • one year ago
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    |dw:1438122700062:dw|

  6. UsukiDoll
    • one year ago
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    ok. so we need to use two exponent rules for this problem \[\large a^M \cdot a^N =a^{M+N}\] \[\large \frac{a^M}{a^N} = a^{M-N}\]

  7. UsukiDoll
    • one year ago
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    so using the first exponent rule letting a = 4 m = 4 and n =3 we get \[\LARGE \frac{4^{4+3}}{4^5}\]

  8. UsukiDoll
    • one year ago
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    what is 4 + 3 ?

  9. anonymous
    • one year ago
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    7 @UsukiDoll

  10. UsukiDoll
    • one year ago
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    ok so now we have \[\LARGE \frac{4^{7}}{4^5}\] now using the division/subtraction rule we have \[\LARGE 4^{7-5}\] what is 7-5?

  11. UsukiDoll
    • one year ago
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    back... my browser went nuts. so what's 7 - 5 ?

  12. anonymous
    • one year ago
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    7 @UsukiDoll

  13. UsukiDoll
    • one year ago
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    umm no I'm asking what 7 - 5 is it's like you have 7 marbles... I take 5 how many marbles do you have left?

  14. anonymous
    • one year ago
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    sorry 2 @UsukiDoll

  15. UsukiDoll
    • one year ago
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    ^_^ so now we have \[\LARGE 4^2 \] the exponent has the number 2 and that means to write 4 two times so now we have \[\LARGE 4 \times 4 \]

  16. UsukiDoll
    • one year ago
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    I'm stuck in reply mode... -_- OpenStudy is driving me nuts on Opera browser we just have to figure out what 4 x 4 is and we're done.

  17. anonymous
    • one year ago
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    16

  18. anonymous
    • one year ago
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    @UsukiDoll

  19. UsukiDoll
    • one year ago
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    yes! that's the final answer . good job :)

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