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anonymous

  • one year ago

CAN SOMEONE CHECK MY ANSWERS PLEASE???? 1.Which is the converse of the statement? If x is odd, then 2x + 1 is odd. If 2x + 1 is odd, then x is odd. If 2x + 1 is not odd, then x is not odd.<<<< If x is odd, then 2x + 1 is odd. If x is not odd, then 2x + 1 is not odd. 2.Simplify. -27a^4b^3/3ab –9a2b –9a3b2 –3ab -a^2/9b<<<<<<<<<<<

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  1. anonymous
    • one year ago
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    @UsukiDoll

  2. UsukiDoll
    • one year ago
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    ok so the negation of the first statement is If x is NOT odd, then 2x + 1 is NOT odd. converse is flipping the statement If 2x+1 is odd, then x is odd contrapositive is the negative version of that converse statement if 2x+1 is NOT odd, then x is NOT odd

  3. UsukiDoll
    • one year ago
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    \[\frac{-27a^4b^3}{3ab} \rightarrow = -9a^3b^2\]

  4. UsukiDoll
    • one year ago
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    exponent laws \[\frac{a^4}{a} \rightarrow a^{4-1} \rightarrow a^3 \] same applies to b

  5. anonymous
    • one year ago
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    Thats for the second question right?

  6. UsukiDoll
    • one year ago
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    yeah... imo both of your answers are way off

  7. anonymous
    • one year ago
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    Oh..

  8. UsukiDoll
    • one year ago
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    Original statement If A then B Negation If NOT A then NOT B conversely if B then A contrapositive if NOT B then NOT A

  9. UsukiDoll
    • one year ago
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    Original statement A = x is odd B = 2x+1 is odd If A then B if x is odd then 2x+1 is odd Negation If NOT A then NOT B if x is NOT odd then 2x+1 is NOT odd conversely if B then A If 2x+1 is odd then x is odd contrapositive if NOT B then NOT A if 2x+1 is NOT odd then x is NOT odd

  10. UsukiDoll
    • one year ago
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    these guys fail to mention that you can fine tune the negative versions of the statement If NOT A then NOT B if x is NOT odd then 2x+1 is NOT odd if x is even then 2x+1 is even

  11. anonymous
    • one year ago
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    isnt it odd?

  12. UsukiDoll
    • one year ago
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    I said you can refine the negative versions of the statement Negation If NOT A then NOT B if x is NOT odd then 2x+1 is NOT odd if it's not odd, then it's even.. but that can be easily disproved because 2k is even and 2k+1 is odd

  13. anonymous
    • one year ago
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    Alright..I understood what you told me and when I used it in the equation I get a different answer than they give in the options

  14. UsukiDoll
    • one year ago
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    a different answer?

  15. anonymous
    • one year ago
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    Yes I get an even but the choices are all odd

  16. UsukiDoll
    • one year ago
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    it's probably because they haven't realized that they can fine tune it .

  17. UsukiDoll
    • one year ago
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    but converse statements are usually positive ... it's the original if A then B statement written in reverse.

  18. anonymous
    • one year ago
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    So C should be the reverse from the original A then B

  19. anonymous
    • one year ago
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    Am I correct? or still way off?

  20. UsukiDoll
    • one year ago
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    worse.......and on top of that I gave out the definitions earlier

  21. UsukiDoll
    • one year ago
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    look at what I wrote earlier.

  22. anonymous
    • one year ago
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    So if 2x+1 is odd, then x is odd right?

  23. UsukiDoll
    • one year ago
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    yes

  24. anonymous
    • one year ago
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    So if I got that then the answer is A

  25. UsukiDoll
    • one year ago
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    yes

  26. anonymous
    • one year ago
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    YES!!!!!!!!!!!!!!!!!!!!!!!!!!!

  27. anonymous
    • one year ago
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    Can you help with the first question?

  28. UsukiDoll
    • one year ago
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    of?

  29. anonymous
    • one year ago
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    Sorry I meant the second question

  30. UsukiDoll
    • one year ago
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    it's straight forward..... you need to understand the exponent laws for a and b we know that \[\frac{-27}{3} = -9\]

  31. UsukiDoll
    • one year ago
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    if a and b are just single then it's technically \[a^1\] and \[b^1\] but no one writes it like that anymore

  32. UsukiDoll
    • one year ago
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    the same goes for -1c... professors will mark points off not because it's wrong.. because the notation is childish... so the correct way to express your answer is -c

  33. anonymous
    • one year ago
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    Oh really? how come?

  34. UsukiDoll
    • one year ago
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    they claim that you grew up from high school so now it's time to write it in college style notation

  35. UsukiDoll
    • one year ago
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    the same goes for simple stuff like this 7+(-7) you can't have a double sign it's 7-7 =0 again for 7-(-7). distribute that negative it's now 7+7 = 14

  36. UsukiDoll
    • one year ago
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    when I reached Algebra 2, I had to knock it off with writing -1c and just write -c for the simple problems, it's Algebra 1 that you need to stop writing double signs

  37. UsukiDoll
    • one year ago
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    and stop writing a^1

  38. UsukiDoll
    • one year ago
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    that's how the professors work now.

  39. anonymous
    • one year ago
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    You dont know how many questions I got wrong b/c this -3-3 is actually -3+3 or 5-5-4 is actually 5+ -5 + -4

  40. UsukiDoll
    • one year ago
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    you can't have double signs... can't have +-, -- , -+,++ . just one is allowed either - or +

  41. UsukiDoll
    • one year ago
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    I don't know why teachers write stuff like that...it's irritating

  42. anonymous
    • one year ago
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    That's how I've had it for a few tests

  43. anonymous
    • one year ago
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    It is reasons why I come to open study xD

  44. UsukiDoll
    • one year ago
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    what grade are you in?

  45. anonymous
    • one year ago
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    I'm a freshman

  46. UsukiDoll
    • one year ago
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    oh 9th grade?

  47. anonymous
    • one year ago
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    Yeah

  48. UsukiDoll
    • one year ago
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    where did you get that first question? It belongs in logic and discrete math. something in the 300 level at my university

  49. UsukiDoll
    • one year ago
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    unless you're at a private school?

  50. anonymous
    • one year ago
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    No I'm home schooled

  51. UsukiDoll
    • one year ago
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    oh O_O... in a way that's great because public schools went nuts... you don't want to learn common core..trust me. I'm a Math Major and I hate everyday common core did to Math .

  52. UsukiDoll
    • one year ago
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    *everything

  53. anonymous
    • one year ago
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    Lmao if you dont like it then why major in it?

  54. UsukiDoll
    • one year ago
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    If I didn't go further in my Math Studies, I wouldn't have been able to help you.

  55. UsukiDoll
    • one year ago
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    xD. I said Common Core Math was awful....the stuff that makes simple subtraction crazy. my cousins, second grade and kindergarten, are stuck with it. Public and private schools have it. x(

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