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newwar

  • one year ago

What is the value of the expression 7–3? A. –21 B. Negative Exponents C. Negative Exponents D. 343

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  1. newwar
    • one year ago
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  2. anonymous
    • one year ago
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    |dw:1441903391506:dw|do you know this?

  3. anonymous
    • one year ago
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    you there?

  4. newwar
    • one year ago
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    yes what do i do

  5. newwar
    • one year ago
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    hello

  6. newwar
    • one year ago
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    @imammalik_806

  7. newwar
    • one year ago
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    @itbribro

  8. anonymous
    • one year ago
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    rekt m8

  9. anonymous
    • one year ago
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    7 minus 3?

  10. newwar
    • one year ago
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    4

  11. anonymous
    • one year ago
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    k hold on lemme see

  12. anonymous
    • one year ago
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    oh bro

  13. anonymous
    • one year ago
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    its not 7 minus 3

  14. anonymous
    • one year ago
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    the 3 is an exponent

  15. newwar
    • one year ago
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    ok

  16. newwar
    • one year ago
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    so what do i do

  17. anonymous
    • one year ago
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    |dw:1441904338660:dw|see the pattern?

  18. newwar
    • one year ago
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    yes

  19. anonymous
    • one year ago
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    so we want to go the other direction for negative exponents. to do this we have to do the inverse operation of multiplication. do you know what the inverse operation of multiplication is?

  20. newwar
    • one year ago
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    no

  21. anonymous
    • one year ago
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    well, technically, we multiply by the reciprocal... but ususally people just call it division.

  22. anonymous
    • one year ago
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    |dw:1441904557762:dw|

  23. newwar
    • one year ago
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    ok

  24. anonymous
    • one year ago
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    so if we are at \(7^3\) and we want to get to \(7^2\), we divide by 7 or multiply by 1/7... okay?

  25. anonymous
    • one year ago
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    do you follow that?

  26. newwar
    • one year ago
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    ok

  27. anonymous
    • one year ago
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    so let's take it a step further... let's figure out what \(7^0\) should be , using the pattern...

  28. newwar
    • one year ago
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    k

  29. anonymous
    • one year ago
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    |dw:1441904754195:dw|

  30. anonymous
    • one year ago
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    can you figure out what \(7^0\) is?

  31. newwar
    • one year ago
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    0

  32. anonymous
    • one year ago
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    no... let's follow the pattern. what is the number above \(7^0\)?

  33. anonymous
    • one year ago
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    you there?

  34. newwar
    • one year ago
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    yup

  35. anonymous
    • one year ago
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    so what is the number above \(7^0\)

  36. anonymous
    • one year ago
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    |dw:1441904990185:dw|

  37. newwar
    • one year ago
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    7

  38. newwar
    • one year ago
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    1/343

  39. anonymous
    • one year ago
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    very good!!! now we use the pattern. to go down (negative direction) we divide by 7. what is 7 divided by 7?

  40. anonymous
    • one year ago
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    it's the same as 7 times (1/7)...

  41. newwar
    • one year ago
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    -1

  42. anonymous
    • one year ago
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    7 divided by 7 is -1 ??? i don't think so, try again

  43. newwar
    • one year ago
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    just 1 sorry

  44. anonymous
    • one year ago
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    excellent!!!

  45. anonymous
    • one year ago
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    |dw:1441905368853:dw|so can you figure out the next number? again, follow the pattern...

  46. newwar
    • one year ago
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    7 by one

  47. anonymous
    • one year ago
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    ? if you can use an expression or the the number

  48. newwar
    • one year ago
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    ok

  49. anonymous
    • one year ago
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    so what is it... i don't understand what number "7 by one" represents.

  50. anonymous
    • one year ago
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    don't be afraid... take your time and think, use the pattern and then respond. it's okay to make a mistake because i will help you to learn from it

  51. newwar
    • one year ago
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    sorry my computer went out

  52. anonymous
    • one year ago
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    that's alright... what did you get?

  53. newwar
    • one year ago
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    i thihnk it is c

  54. anonymous
    • one year ago
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    \(7^{-1}=\text{c?}\)

  55. anonymous
    • one year ago
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    just so you know... my goal here is to help you understand these types of problems. it is not to just help you get the answer for this problem.

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