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Tabbiejack

  • one year ago

what is the simplified form of the expression (b/7)^2

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  1. Tabbiejack
    • one year ago
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    |dw:1369532637410:dw|

  2. Tabbiejack
    • one year ago
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    @satellite73 I need help

  3. Tabbiejack
    • one year ago
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    please

  4. Tabbiejack
    • one year ago
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    The choices are|dw:1369532959983:dw|

  5. JBrandonS
    • one year ago
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    \[(\frac{b}{7})^2 = \frac{b^2}{7^2} = \frac{b^2}{49}\]

  6. galacticwavesXX
    • one year ago
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    B

  7. galacticwavesXX
    • one year ago
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    just square top and bottom on similar questions

  8. Tabbiejack
    • one year ago
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    Thanks so much I have 2 other questions if you guys don't mind

  9. Tabbiejack
    • one year ago
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    |dw:1369533436214:dw|

  10. JBrandonS
    • one year ago
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    Pull out the coefficients and use \[x^ax^b=x^{a+b}\]

  11. Tabbiejack
    • one year ago
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    I don't know this at all I am a parent trying to give my 2 children some math for the summer so I am asking for the help because I have not done algebra in 25 years

  12. JBrandonS
    • one year ago
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    Okay, well do you know what coefficients are?

  13. Tabbiejack
    • one year ago
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    yes

  14. JBrandonS
    • one year ago
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    Okay well then move those out so you get \[ 2*3x^6x^{1/2} \] and use the above formula.

  15. galacticwavesXX
    • one year ago
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    the coefficients are the numbers in front of the variable whenever you are multiplying variables with powers you always must add the powers together

  16. galacticwavesXX
    • one year ago
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    what will the final answer be?

  17. Tabbiejack
    • one year ago
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    6x^3

  18. Tabbiejack
    • one year ago
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    \[6x ^{3}\]

  19. JBrandonS
    • one year ago
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    You need to add the powers, not multiply. so \[6x^{6+1/2}\]

  20. Tabbiejack
    • one year ago
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    ok so what is the answer

  21. Tabbiejack
    • one year ago
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    I will give you the choices

  22. galacticwavesXX
    • one year ago
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    the answer would be\[6x^\frac{ 13 }{ 2 }\]

  23. JBrandonS
    • one year ago
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    I have given you the answer, there is only one thing you need to do... Do you know how to add fractions with whole numbers?

  24. galacticwavesXX
    • one year ago
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    that is 6x^13/2

  25. Tabbiejack
    • one year ago
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    so its \[5x \frac{ 13 }{2 }\]

  26. Tabbiejack
    • one year ago
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    Guys I feel so old doing this

  27. galacticwavesXX
    • one year ago
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    all you need to do is add the powers which is 6+.5 and you get 6.5 which is 13/2 in fraction form so final answer would be 6x^13/2

  28. Tabbiejack
    • one year ago
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    the dean at my children school said they were cheating so I have to give this these math test so that can get ready to take the big test to passed algebra

  29. Tabbiejack
    • one year ago
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    this really means the world to me all the help from you guys

  30. Tabbiejack
    • one year ago
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    I have another if your up for it!

  31. galacticwavesXX
    • one year ago
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    bring it on

  32. Tabbiejack
    • one year ago
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    |dw:1369534461113:dw|

  33. galacticwavesXX
    • one year ago
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    on the top part is that C^9

  34. Tabbiejack
    • one year ago
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    yes

  35. Tabbiejack
    • one year ago
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    |dw:1369534620249:dw|

  36. galacticwavesXX
    • one year ago
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    ok so this expression can be re-written as \[\frac{ x^9 }{ d^7 }/\frac{ x^14 }{ d^10 }\] which can be written as \[\frac{ x^9 }{ d^7 }*\frac{ d^10 }{ x^14 }\] the equation software on here is complexed but that is d^10 and x^-14

  37. Tabbiejack
    • one year ago
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    that is not a choice

  38. galacticwavesXX
    • one year ago
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    now what we can do is simplify the expression easier this way and we do this by subtracting the powers of the variable x and subtract the powers of the variable d not finished yet

  39. Tabbiejack
    • one year ago
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    o sorry

  40. galacticwavesXX
    • one year ago
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    \[\frac{ x^9 }{ x^14 }=\frac{ 1 }{ x^5 }\] andthe other one whic you get \[\frac{ d^10 }{ d^7 }=d^3\] combine and you get \[\frac{ d^3 }{ c^5 }\] sorry the x should have been a C

  41. galacticwavesXX
    • one year ago
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    if you can't see that it is d^3/c^5

  42. Tabbiejack
    • one year ago
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    This one I tried but I got it wrong is it B

  43. Tabbiejack
    • one year ago
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    are you guys still with me?

  44. galacticwavesXX
    • one year ago
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    yea my mom called for something but im back

  45. Tabbiejack
    • one year ago
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    Write the recursive formula for the geometric sequence. a1 = -2 a2 = 8 a3 = -32 A. an = -4 + an-1 B. an = -2 + an-1 C. an = -2 • an-1 D. an = -4 • an-1

  46. Tabbiejack
    • one year ago
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    do you want me to open this up in a new question so I can give you an award

  47. galacticwavesXX
    • one year ago
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    no im ok but i am looking at the sequences and none of them can i derive from the formulas given

  48. galacticwavesXX
    • one year ago
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    ohh never mind i got it the answer should be D

  49. Tabbiejack
    • one year ago
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    You rock

  50. Tabbiejack
    • one year ago
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    I am going to open up another question I want to give you an award for helping me

  51. galacticwavesXX
    • one year ago
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    haha thank you

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