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wintersuntime

  • one year ago

Can someone be nice enough to help me please

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  1. wintersuntime
    • one year ago
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    http://westada.org/cms/lib8/ID01904074/Centricity/Domain/2795/2.4.pdf

  2. wintersuntime
    • one year ago
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    It's the second page 17

  3. Vocaloid
    • one year ago
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    so we're given y = mx + b, and we want to solve for b subtract mx from each side to get b by itself

  4. wintersuntime
    • one year ago
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    I have to subtract 3x on each side

  5. Vocaloid
    • one year ago
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    where are you getting 3 from?

  6. wintersuntime
    • one year ago
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    It's on question 13

  7. Vocaloid
    • one year ago
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    I thought you wanted question 17?

  8. wintersuntime
    • one year ago
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    No I need help on all of them

  9. Vocaloid
    • one year ago
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    ok, let's start with 13 then

  10. Vocaloid
    • one year ago
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    so we have 3x + 5y = 30, so yes, we would start by subtracting 3x from each side

  11. Vocaloid
    • one year ago
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    5y = 30 - 3x, do you know where to go from there?

  12. wintersuntime
    • one year ago
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    |dw:1443140077390:dw|

  13. wintersuntime
    • one year ago
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    subtract 3x on both sides

  14. Vocaloid
    • one year ago
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    right, so that gives us 5y = 30 - 3x, now keep going

  15. wintersuntime
    • one year ago
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    |dw:1443140208422:dw|

  16. wintersuntime
    • one year ago
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    like that ?

  17. Vocaloid
    • one year ago
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    uh, not quite. we want y by itself, but we have 5y, so we divide everything by 5

  18. Vocaloid
    • one year ago
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    5y = 30 - 3x y = (30-3x)/5

  19. wintersuntime
    • one year ago
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    The answer is 5.4

  20. wintersuntime
    • one year ago
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    |dw:1443140424012:dw|

  21. Vocaloid
    • one year ago
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    uh, not quite, you just stop when you get y = (30-3x)/5

  22. Vocaloid
    • one year ago
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    the question asked us to get y, and we got y, so y = (30-3x)/5 is our final answer

  23. wintersuntime
    • one year ago
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    is that suppose to be dividing before 5

  24. Vocaloid
    • one year ago
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    yes

  25. wintersuntime
    • one year ago
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    For the next the first step is 6y=360-24x

  26. wintersuntime
    • one year ago
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    I thinks I did it wrong

  27. wintersuntime
    • one year ago
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    because it says for x

  28. Vocaloid
    • one year ago
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    yeah, so we want x by itself start by subtracting 6y from both sides

  29. wintersuntime
    • one year ago
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    24x=6y-360 like that <-

  30. Vocaloid
    • one year ago
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    almost 24x = 360 - 6y now we want x by itself, so we divide both sides by 24 x = (360-6y)/24

  31. wintersuntime
    • one year ago
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    Do I just put the equation or do I have to solve it

  32. Vocaloid
    • one year ago
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    that's it, our answer is x = (360-6y)/24

  33. wintersuntime
    • one year ago
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    oh okay

  34. wintersuntime
    • one year ago
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    The next one is hard

  35. Vocaloid
    • one year ago
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    start by multiplying both sides by 32

  36. wintersuntime
    • one year ago
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    It starts 1280-80d=32c

  37. Vocaloid
    • one year ago
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    good, now subtract 1280 from both sides

  38. wintersuntime
    • one year ago
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    Do i also subtract 1280 to 80 or 32 ?

  39. Vocaloid
    • one year ago
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    nope, since 80 and 32 are attached to variables (letters) we leave them alone

  40. Vocaloid
    • one year ago
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    -80d = 32c - 1280 divide both sides by -80 now

  41. wintersuntime
    • one year ago
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    It's -1328

  42. wintersuntime
    • one year ago
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    @Vocaloid

  43. Vocaloid
    • one year ago
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    uh, not quite, remember that 32c and 1280 can't be put together because of the c -80d = 32c - 1280 d = (32c-1280)/(-80)

  44. wintersuntime
    • one year ago
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    oh so thats the equation

  45. wintersuntime
    • one year ago
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    I need help on question 16

  46. wintersuntime
    • one year ago
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    @Vocaloid

  47. Vocaloid
    • one year ago
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    multiply both sides by (9/5) first

  48. wintersuntime
    • one year ago
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    or 5/9

  49. Vocaloid
    • one year ago
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    nope, we want to multiply by (9/5) to get rid of the (5/9)

  50. wintersuntime
    • one year ago
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    oh okay

  51. wintersuntime
    • one year ago
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    idk what would be the equation

  52. wintersuntime
    • one year ago
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    I'm struggling

  53. Vocaloid
    • one year ago
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    (9/5)C = F - 32 now add 32 to both sides

  54. wintersuntime
    • one year ago
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    I add 32 to 32 and 9/5

  55. Vocaloid
    • one year ago
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    nope, leave the 9/5 alone since its attached to c (9/5)C + 32 = F

  56. wintersuntime
    • one year ago
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    So the equation would be 9/5c+32=f

  57. Vocaloid
    • one year ago
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    yes, or you can flip it around to get F = (9/5)C + 32

  58. wintersuntime
    • one year ago
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    For the next questions is not even using numbers ?

  59. Vocaloid
    • one year ago
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    y = mx + b subtract mx from both sides

  60. Vocaloid
    • one year ago
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    just treat mx like a number

  61. wintersuntime
    • one year ago
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    Is it y=(mx-b)

  62. Vocaloid
    • one year ago
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    uh, not quite y - mx = mx + b - mx now keep going

  63. wintersuntime
    • one year ago
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    you cancel out mx

  64. Vocaloid
    • one year ago
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    good, so that leaves us with y - mx = b and since the question wants b by itself, we're done

  65. Vocaloid
    • one year ago
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    b = y - mx

  66. wintersuntime
    • one year ago
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    oh

  67. Vocaloid
    • one year ago
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    ok, last one Ax + By = C start by subtracting Ax from both sides

  68. wintersuntime
    • one year ago
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    Isn't it y=c/b-a/b*x

  69. wintersuntime
    • one year ago
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    Thank you so much sorry for bothering you all the time

  70. Vocaloid
    • one year ago
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    almost, Y = C/B - A*x/B and don't apologize, you aren't a bother :)

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