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anonymous

  • one year ago

WILL FAN AND MEDAL FOR HELP ON QUESTIONS!!!!!

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  1. anonymous
    • one year ago
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    what are the questions? :/

  2. anonymous
    • one year ago
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  3. anonymous
    • one year ago
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  4. anonymous
    • one year ago
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  5. anonymous
    • one year ago
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  6. anonymous
    • one year ago
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  7. anonymous
    • one year ago
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    @YouDontKnowMeOo

  8. anonymous
    • one year ago
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    thats alot. lol

  9. anonymous
    • one year ago
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    can you help me on some @YouDontKnowMeOo ?

  10. anonymous
    • one year ago
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    you got to post one at a time lol

  11. anonymous
    • one year ago
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    is it too small?

  12. anonymous
    • one year ago
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    just zoom in on the page to make it bigger

  13. anonymous
    • one year ago
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    @kevinhunterwood69

  14. anonymous
    • one year ago
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    @DelTaVsPi

  15. anonymous
    • one year ago
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    each queation is susposed to have it's own thing

  16. anonymous
    • one year ago
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    question*

  17. pooja195
    • one year ago
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    Its own post.

  18. anonymous
    • one year ago
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    ok

  19. anonymous
    • one year ago
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    ill make a new one and tag you in it

  20. anonymous
    • one year ago
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    Which question are we solving ? :)

  21. anonymous
    • one year ago
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    the first

  22. anonymous
    • one year ago
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    Alright

  23. anonymous
    • one year ago
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    So coefficients means the number in front of the 'x' So just look in front of those 'x' values :)

  24. anonymous
    • one year ago
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    C? 5,2,-4

  25. anonymous
    • one year ago
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    5x^2 + 2x - 4 What do you think the coefficients are?

  26. anonymous
    • one year ago
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    yes ! You are correct ^^

  27. anonymous
    • one year ago
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    Thanks what about the next question

  28. anonymous
    • one year ago
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    Except for (-4) because there is no pro numeral following the coefficient (-4)

  29. anonymous
    • one year ago
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    ok

  30. anonymous
    • one year ago
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    Okay so we have: 7x^2 - x -2 - (-6x^3 + 3)

  31. anonymous
    • one year ago
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    In this scenario, we just have to expand and simplify, just be careful of that minus ^^

  32. anonymous
    • one year ago
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    okay

  33. anonymous
    • one year ago
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    can you walk me through it?

  34. anonymous
    • one year ago
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    Okay sure ^^

  35. anonymous
    • one year ago
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    Firstly, I would expand -(-6x^3 + 3 ) first

  36. anonymous
    • one year ago
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    okay

  37. anonymous
    • one year ago
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    So we get something like: +6x^3 - 3

  38. anonymous
    • one year ago
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    yep

  39. anonymous
    • one year ago
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    Now just collect like terms :)

  40. anonymous
    • one year ago
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    would you get rid of the plus sign?

  41. anonymous
    • one year ago
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    yeah you can get rid of it, I just put it in there to show you that I have expanded the minus sign inwards ^^

  42. anonymous
    • one year ago
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    wouldn;t it be +6x^3 +3 ?

  43. anonymous
    • one year ago
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    Ah that's the thing - (6x^3 + 3 = -6x^3 - 3

  44. anonymous
    • one year ago
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    oh alright

  45. anonymous
    • one year ago
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    Why? What does - x + = ? Remember these rules - x - = + - x + = - + x - = - + x + = +

  46. anonymous
    • one year ago
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    yeah i know those

  47. anonymous
    • one year ago
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    So have you resolve the question, by collecting the like terms?

  48. anonymous
    • one year ago
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    would it be 3x^3 ?

  49. anonymous
    • one year ago
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    How did you get 3x^3?

  50. anonymous
    • one year ago
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    By simplifying the second part

  51. anonymous
    • one year ago
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    I show you how I did it and just follow through my steps :)

  52. anonymous
    • one year ago
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    okay

  53. anonymous
    • one year ago
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    = 7x^2 - x - 2 - ( -6x^3 + 3 ) = 7x^2 - x - 2 + 6x^3 - 3 = 6x^3 + 7x^2 - x - 5

  54. anonymous
    • one year ago
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    Is there anything you don't understand, please point it out ^^

  55. anonymous
    • one year ago
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    ok i think i get it now

  56. anonymous
    • one year ago
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    Okay no problem, just refer back to this previous example that we have do together to just briefly understand the concept :) So next question?

  57. anonymous
    • one year ago
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    yep

  58. anonymous
    • one year ago
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  59. anonymous
    • one year ago
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    so you dont have to scroll back up

  60. anonymous
    • one year ago
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    Okay cool

  61. anonymous
    • one year ago
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    So in this question 15), we are dealing with powers, ideally 10's

  62. anonymous
    • one year ago
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    So what do you think 2.3 x 10^1 = ?

  63. anonymous
    • one year ago
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    do we add the powers of ten?

  64. anonymous
    • one year ago
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    In this case, we are multiplying by powers of ten's

  65. anonymous
    • one year ago
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    and add the regular numbers?

  66. anonymous
    • one year ago
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    ok

  67. anonymous
    • one year ago
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    There isn't much adding going on in Q15) its all multiplying :)

  68. anonymous
    • one year ago
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    would the answer be 9.3• 10^7 or 9.3•10^6

  69. anonymous
    • one year ago
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    hmm... would you like to try again, that answer seems way off :D

  70. anonymous
    • one year ago
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    here 2.3 x 10^ 1 = ?

  71. anonymous
    • one year ago
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    ok

  72. anonymous
    • one year ago
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    We'll break it down

  73. anonymous
    • one year ago
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    they aren't like terms thought

  74. anonymous
    • one year ago
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    |dw:1433512805819:dw|

  75. anonymous
    • one year ago
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    As we multiply by 10^1 We are moving the decimal point across to the right -> Hence it is moving to make the number bigger

  76. anonymous
    • one year ago
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    none of the answers would match that.

  77. anonymous
    • one year ago
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    i think i was right before, thats how my teacher taught me how to do it.

  78. anonymous
    • one year ago
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    Are you allowed to use calculators?

  79. anonymous
    • one year ago
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    yes

  80. anonymous
    • one year ago
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    Ah okay, that makes things much more simpler XD

  81. anonymous
    • one year ago
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    i think your supposed to multiply 2.3 and 7 and multiply the powers of ten

  82. anonymous
    • one year ago
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    would the answer be a

  83. anonymous
    • one year ago
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    Just type in the calculator as it is displayed (2.3 x 10^1)(7 x 10^6) = 161000000

  84. anonymous
    • one year ago
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    am i right?

  85. anonymous
    • one year ago
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    well no to be honest, i think you may have interpreted the question wrong perhaps...

  86. anonymous
    • one year ago
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    what do you think it is?

  87. anonymous
    • one year ago
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    The value is 1.61 x 10^7

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