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Isabel.A

  • 2 years ago

.... Help !

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  1. Isabel.A
    • 2 years ago
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    |dw:1348247458539:dw|

  2. Isabel.A
    • 2 years ago
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    Solve For r

  3. JakeV8
    • 2 years ago
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    Is that all you are given in the problem, or is there more?

  4. Isabel.A
    • 2 years ago
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    Thats All .

  5. nustian
    • 2 years ago
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    incomplete information

  6. JakeV8
    • 2 years ago
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    No, it is ok... right now, it is "solved" for C... you need to get "r" all by itself instead.

  7. Isabel.A
    • 2 years ago
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    How Do I Do That Tho ?

  8. JakeV8
    • 2 years ago
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    If you divide both sides of the equation by 2pi, the right side simplifies to just "r"

  9. nustian
    • 2 years ago
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    exactly

  10. JakeV8
    • 2 years ago
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    |dw:1348247556863:dw|

  11. nustian
    • 2 years ago
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    u just need values of r

  12. nustian
    • 2 years ago
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    |dw:1348074883290:dw|

  13. Isabel.A
    • 2 years ago
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    So its C-2pi=r ?

  14. nustian
    • 2 years ago
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    whatever the vaue of r is put in that formula and pi has value 3.14

  15. Isabel.A
    • 2 years ago
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    There is no Value of R

  16. JakeV8
    • 2 years ago
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    if you don't have a value of r, that's fine... "solving for r" just means writing the expression down in a way where it starts like "r = "

  17. JakeV8
    • 2 years ago
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    so, r = C / (2pi) is solving your original expression for "r"

  18. Isabel.A
    • 2 years ago
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    Isnt it Negative tho ?

  19. JakeV8
    • 2 years ago
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    why would it be negative?

  20. Isabel.A
    • 2 years ago
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    |dw:1348247883645:dw|

  21. Isabel.A
    • 2 years ago
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    To Be Able To Get It To The Other Side .

  22. JakeV8
    • 2 years ago
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    no, you don't subtract anything... don't let the 2pi term confuse you

  23. Isabel.A
    • 2 years ago
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    Ohh Okay . Gosh Its Confusing .

  24. JakeV8
    • 2 years ago
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    Think of easier stuff like this... if I said C = 5r, solve for r, you would divide both sides by 5, leaving you with C/5 = r, or you could just reverse it and answer r = C/5

  25. Isabel.A
    • 2 years ago
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    Ohh Well That Makes Sense . So Basicly The Answers ; R=C2pi ?

  26. JakeV8
    • 2 years ago
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    2pi is just some number... happens to be a little more than 6 since pi is about 3.14, but don't even worry about that.... just divide both sides by "2pi". On the r side, the 2pi divides out and "goes away" :)

  27. Isabel.A
    • 2 years ago
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    Oooh Okay(:

  28. JakeV8
    • 2 years ago
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    R = C / 2pi you divide C by 2pi, just like you divided (2pi)(R) by 2pi to get just R

  29. Isabel.A
    • 2 years ago
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    o.o Wait . How do i divide it by C ?

  30. JakeV8
    • 2 years ago
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    What class/grade are you in?

  31. Isabel.A
    • 2 years ago
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    Algebra 1 & FreshMan

  32. JakeV8
    • 2 years ago
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    ok, cool

  33. Isabel.A
    • 2 years ago
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    Lol Yeah .

  34. Isabel.A
    • 2 years ago
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    & You ?

  35. JakeV8
    • 2 years ago
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    so, any equation like y = 2x can be rewritten by dividing both sides of it by the same thing... for example, divide both sides of y = 2x by 2..... y = 2 x (y/2) = (2x)/2 y/2 = x This starts with an expression of y and "solves it for x"

  36. Isabel.A
    • 2 years ago
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    Ohhh . Well Thanks For All The Help ! It Is Very Very Appreciated(:

  37. JakeV8
    • 2 years ago
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    you need the same idea with C = (2pi)R C = (2pi)R C/2pi = [ (2pi)(R) ] / (2pi) C/2pi = R <<<--- because the 2pi cancels out

  38. JakeV8
    • 2 years ago
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    No problem... btw, I graduated... just like math and helping :) Keep up the good work :)

  39. Isabel.A
    • 2 years ago
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    Ohh Very Cool . (: & Ima Try Lol .

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