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anonymous

  • one year ago

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  1. anonymous
    • one year ago
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    Solve 3 over x minus 3 equals the quantity of x over x minus 3, minus three-halves for x and determine if the solution is extraneous or not. x = 3, non-extraneous x = 3, extraneous x = -3, extraneous x = -3, non-extraneous

  2. anonymous
    • one year ago
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    \[\frac{ 3 }{ x - 3 } = \frac{ x }{ x -3 } - \frac{ 3 }{ 2 }\] @Nnesha @timo86m

  3. anonymous
    • one year ago
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    @jigglypuff314

  4. jigglypuff314
    • one year ago
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    multiply both sides by 2(x-3)

  5. jigglypuff314
    • one year ago
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    I suppose that should give you something like 2*(3) = 2*(x) - 3(x-3) can you solve for x from there? :)

  6. anonymous
    • one year ago
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    is x 3?

  7. jigglypuff314
    • one year ago
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    that's what I got! :D

  8. jigglypuff314
    • one year ago
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    oh wait now we have to see if it is extraneous or non

  9. jigglypuff314
    • one year ago
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    try plugging it back into the original stufff if there's problems with it -> extraneous if it comes out to be true (like 3=3) then -> non extraneous

  10. anonymous
    • one year ago
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    give me a sec

  11. anonymous
    • one year ago
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    wait sorry it wasn't loading bc of the wifi but its extraneous

  12. jigglypuff314
    • one year ago
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    yup! ^_^

  13. anonymous
    • one year ago
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    thnx

  14. anonymous
    • one year ago
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    can you help me with a couple more?

  15. anonymous
    • one year ago
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    Given the function f(x) = The quantity of 5x minus 3, divided by 4, which of the below expressions is correct? f−1(x) = The quantity of 3 minus 5x, divided by 4 f−1(x) = The quantity of 4x plus 3, divided by 5 f−1(x) = The quantity of 4x minus 3, divided by 5. f−1(x) = The quantity of negative 5x minus 3, divided by 4.

  16. anonymous
    • one year ago
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    \[f(x)= \frac{ 5x - 3 }{ 4 }\]

  17. jigglypuff314
    • one year ago
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    to get the inverse of a function, you flop the x and y and solve for the new y \[x = \frac{ 5y - 3 }{ 4 }\]now try to get y alone ^_^

  18. anonymous
    • one year ago
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    so \[x +3 = \frac{ 5y }{ 4 }\]

  19. anonymous
    • one year ago
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    \[f ^{-1}(x) = \frac{ 4x + 3 }{ 5 }\]

  20. anonymous
    • one year ago
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    am i right>?

  21. jigglypuff314
    • one year ago
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    correct!

  22. anonymous
    • one year ago
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    thnx i have more can you help?

  23. jigglypuff314
    • one year ago
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    sure, although I might take a little time to answer (multi tasking atm) ^_^

  24. anonymous
    • one year ago
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    Below are two different functions, f(x) and g(x). What can be determined about their slopes? f(x)= −1x + 1 The function g of x going through 0, 3 and 2, negative 1 The function f(x) has a larger slope. The function g(x) has a larger slope. They both have the same slope. The relationship between slopes cannot be determined.

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  25. anonymous
    • one year ago
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    np thnx

  26. jigglypuff314
    • one year ago
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    ew the wording of this is weird do they mean larger as in slope of -2 is greater than slope of -1 because it is steeper? or do they mean larger as in -1 is greater than -2 because it is?

  27. anonymous
    • one year ago
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    tbh idk

  28. jigglypuff314
    • one year ago
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    I suggest you open another question to ask this someone else deciphering this weirdly phrased english confuses me every time and I would feel bad if I gave you a wrong answer :3

  29. anonymous
    • one year ago
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    okay ill skip that one for now

  30. anonymous
    • one year ago
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    Which of the following represents \[3x ^{5/7}\] in radical form? 3 times seventh root of x to the fifth power seventh root of 3 x to the fifth power 3 times fifth root of x to the seventh power fifth root of 3 x to the seventh power

  31. anonymous
    • one year ago
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    i think its B

  32. jigglypuff314
    • one year ago
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    B? but B has 3 inside the root, why would we want that? x^(5/7) = seventh root of x to the fifth power

  33. anonymous
    • one year ago
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    so A

  34. jigglypuff314
    • one year ago
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    yessss :)

  35. anonymous
    • one year ago
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    thnx

  36. anonymous
    • one year ago
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    To which graph does the point (2, 4) belong? y ≥ x + 3 y ≥ −x + 8 y ≥ 4x − 5 y ≥ −2x + 9

  37. anonymous
    • one year ago
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    i think its C

  38. jigglypuff314
    • one year ago
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    That's right! Good Job!

  39. anonymous
    • one year ago
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    thnx

  40. anonymous
    • one year ago
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    A function is created to represent the miles per gallon your car gets. What restrictions would be made to the domain? The domain would only include integers. The domain would only include positive integers. The domain would include all real numbers. The domain would only include positive numbers.

  41. anonymous
    • one year ago
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    D? but not sure...

  42. jigglypuff314
    • one year ago
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    I believe that would be the best answer ^_^ You're doing great!

  43. anonymous
    • one year ago
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    thnx

  44. anonymous
    • one year ago
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    The graph of f(x) = x2 has been shifted into the form f(x) = (x − h)2 + k: a parabola with a vertex of negative 5, negative 2 What is the value of h? 2 −5 −2 5

  45. jigglypuff314
    • one year ago
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    vertex = (h, k)

  46. anonymous
    • one year ago
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  47. anonymous
    • one year ago
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    this one idk the answer to this one

  48. jigglypuff314
    • one year ago
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    well if the vertex = (h , k) and they told you that vertex = (-5, -2)

  49. anonymous
    • one year ago
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    oh okay give me a sec then

  50. anonymous
    • one year ago
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    so -5

  51. jigglypuff314
    • one year ago
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    yep! :)

  52. anonymous
    • one year ago
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    thnx

  53. anonymous
    • one year ago
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    Use the table of the function f(x) = x4 - 4x to answer this question: x f(x) -2 24 -1 5 0 0 1 -3 2 8 What is the average rate of change from x = -1 to x = 2? -3 -1 1 3

  54. anonymous
    • one year ago
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    D

  55. jigglypuff314
    • one year ago
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    "average rate of change" is just their complicated way of saying "find the slope" between (-1, 5) and (2, 8)

  56. anonymous
    • one year ago
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    3/3 = 1

  57. anonymous
    • one year ago
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    so 1

  58. jigglypuff314
    • one year ago
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    yep ^_^

  59. anonymous
    • one year ago
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    o h ok thnx i would have go thtat one wrong

  60. anonymous
    • one year ago
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    The function for the cost of materials to make a shirt is f(x) = 5/6x + 5, where x is the number of shirts. The function for the selling price of those shirts is g(f(x)), where g(x) = 5x + 6. Find the selling price of 18 shirts. 106 120 185 196

  61. jigglypuff314
    • one year ago
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    5((5/6)*(18) +5) + 6

  62. anonymous
    • one year ago
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    still trying to solve this so idk the answer yet

  63. anonymous
    • one year ago
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    i got A

  64. jigglypuff314
    • one year ago
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    g(f(x)) = 5((5/6x + 5) + 6 and yes, that's what I got too

  65. anonymous
    • one year ago
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    yay!

  66. anonymous
    • one year ago
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    George and Bella are asked to solve −3x − 30 = 5x + 18. Identify where one of them made an error. George − 3x − 30 = 5x + 18 − 3x − 30 − 5x = 5x + 18 −5x −8x − 30 = 18 − 8x − 30 + 30 = 18 + 30 −8x = 48 Negative 8x over negative 8 equals 48 over negative 8 Bella x = − 6 − 3x − 30 = 5x + 18 −3x − 30 − 3x = 5x + 18 − 3x − 30 = 2x + 18 −30 − 18 = 2x + 18 −18 − 48= 2x Negative 48 over 2 equals 2x over 2 x=−24 Bella made the error when she subtracted 18 Bella made the error when she subtracted 3x George made the error when he subtracted 5x George made the error when he divided by −8

  67. anonymous
    • one year ago
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    i think the answe is B

  68. jigglypuff314
    • one year ago
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    that's right! :D

  69. anonymous
    • one year ago
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    yay

  70. anonymous
    • one year ago
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    What is the simplified form of the quantity x squared plus 5x plus 6 over 15 x y squared all over the quantity 2x squared plus 7x plus 3 over 5 x squared y ? 3y times the quantity 2x plus 1 over x times the quantity x plus 2 x times the quantity x plus 2 over 3y times the quantity 2x plus 1 x times the quantity x minus 2 over 3y times the quantity 2x minus 1 3y times the quantity 2x minus 1 over x times the quantity x minus 2

  71. anonymous
    • one year ago
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    \[\frac{ \frac{ x^2 + 5x + 6 }{ 15xy^2 } }{ \frac{ 2x^2 + 7x + 3 }{ 5x^2y } }\]

  72. anonymous
    • one year ago
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    in case you think the one above is too small to read

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  73. jigglypuff314
    • one year ago
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    good! now the big fraction line can be interpreted as a division sign and dividing is just multiplying by the flipped so x^2 + 5x +6 5 x^2 y ----------- * -------------- 15 x y^2 2x^2 + 7x + 3

  74. jigglypuff314
    • one year ago
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    you can factor x^2 + 5x + 6 as well as 2x^2 + 7x + 3

  75. anonymous
    • one year ago
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    yeah will is be (x + 3) (x + 2) and (x + 3) (2x + 1) and since we have both of (X + 3) would it be \[\frac{ x + 2 }{ 15xy^2 } \times \frac{ 5x^2y }{ 2x +1 }\]

  76. jigglypuff314
    • one year ago
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    great! then try canceling stuff in the 5 x^2 y / 15 x y^2 :)

  77. anonymous
    • one year ago
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    would it be \[\frac{ x + 2 }{ 3y } \times \frac{ x }{ 2x + 1 }\]

  78. anonymous
    • one year ago
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    not sure though ...

  79. jigglypuff314
    • one year ago
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    it is!

  80. anonymous
    • one year ago
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    yay so would it make it \[\frac{ x(x+2) }{ 3y(2x +1) }\]

  81. jigglypuff314
    • one year ago
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    mhmmm ^_^

  82. anonymous
    • one year ago
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    yay im so happy im actually learning this!

  83. anonymous
    • one year ago
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    one more for now

  84. anonymous
    • one year ago
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    Use the graph below for this question: graph of parabola going through negative 1, 7 and negative 3, 9. What is the average rate of change from x = −1 to x = −3? 5 −3 1 −1

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  85. anonymous
    • one year ago
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    tbh idk this one

  86. jigglypuff314
    • one year ago
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    slope between the points (-1, 7) and (-3, 9) basically :P

  87. anonymous
    • one year ago
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    so -2/2 -1?

  88. anonymous
    • one year ago
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    -1

  89. jigglypuff314
    • one year ago
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    I think so ^_^

  90. anonymous
    • one year ago
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    okay well thank you so much! thats it for now then i got to do more homework in like 30 minutes but im gonna post the one that you didn't know the answer to and then take a break THANK YOU!!

  91. jigglypuff314
    • one year ago
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    glad I could help ^_^ hopefully someone will be able to help you with that one :3 I'm going to sleep, good night :)

  92. anonymous
    • one year ago
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    good night!

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