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MeowLover17

  • one year ago

Which expression is equivalent to the area of metal sheet required to make this square-shaped traffic sign?

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  1. MeowLover17
    • one year ago
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  2. snivvles.com
    • one year ago
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    (2x-1)^2

  3. MeowLover17
    • one year ago
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    A) 4x^2-1 B)4x^2+1 C)4x^2+4x-1 D)4x^2-4x+1

  4. MeowLover17
    • one year ago
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    So the answer would be 4x+1?

  5. snivvles.com
    • one year ago
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    |dw:1437606825983:dw|

  6. snivvles.com
    • one year ago
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    so D

  7. MeowLover17
    • one year ago
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    So i multiply (2x-1)(2x-1) = 4x^2-4x+1?

  8. MeowLover17
    • one year ago
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    Thanks can you help me on 2 others?

  9. snivvles.com
    • one year ago
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    YEP that's right good job

  10. snivvles.com
    • one year ago
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    Yes i can

  11. MeowLover17
    • one year ago
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    Alright ill post them here

  12. MeowLover17
    • one year ago
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    Consider the functions f(x) = 2x + 1 and g(x) = x2 − 10. What is the value of f[g(3)]?

  13. MeowLover17
    • one year ago
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    A)39 B) -3 C) -7 D)-1

  14. snivvles.com
    • one year ago
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    so x=3

  15. MeowLover17
    • one year ago
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    I dont understand

  16. MeowLover17
    • one year ago
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    Okay

  17. snivvles.com
    • one year ago
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    g(x)=3^2-10

  18. snivvles.com
    • one year ago
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    g(x)=9-10

  19. welshfella
    • one year ago
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    g(x) = x^2 - 10 g(3) = 3^2 -10 = ?

  20. snivvles.com
    • one year ago
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    g(x)=-1

  21. MeowLover17
    • one year ago
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    yea g(x)=-1

  22. snivvles.com
    • one year ago
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    substitute that for the x's in f(x)

  23. welshfella
    • one year ago
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    right now plug in x = -1 into f(x)

  24. MeowLover17
    • one year ago
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    -2+1 = -1

  25. snivvles.com
    • one year ago
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    Yep!

  26. welshfella
    • one year ago
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    right d

  27. MeowLover17
    • one year ago
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    So is the answer -1?

  28. snivvles.com
    • one year ago
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    yeah

  29. MeowLover17
    • one year ago
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    Thanks guys :D

  30. MeowLover17
    • one year ago
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    One more

  31. MeowLover17
    • one year ago
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    Given f(x) = 3x − 10 and g(x) = 12x + 8, solve for (f + g)(x) and select the correct answer below.

  32. MeowLover17
    • one year ago
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    (f + g)(x) = 15x − 2 (f + g)(x) = 9x − 2 (f + g)(x) = 15x + 2 (f + g)(x) = 36x2 − 120x

  33. snivvles.com
    • one year ago
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    k hang on

  34. welshfella
    • one year ago
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    3x -10 + 12x = 8

  35. welshfella
    • one year ago
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    now simplify

  36. snivvles.com
    • one year ago
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    ok so its pretty much f(x)+g(x)

  37. welshfella
    • one year ago
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    * thats + 8 not = 8

  38. MeowLover17
    • one year ago
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    okay so i get 15x-10=8

  39. MeowLover17
    • one year ago
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    15x=-2

  40. snivvles.com
    • one year ago
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    so (f+g)(x)=15x-2

  41. MeowLover17
    • one year ago
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    x=-7.5?

  42. snivvles.com
    • one year ago
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    no the answer is (f+g)(x)=15x-2

  43. MeowLover17
    • one year ago
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    Oh okay thank you, how did you get to that?

  44. snivvles.com
    • one year ago
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    I added f(x)+g(x)

  45. MeowLover17
    • one year ago
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    I see

  46. welshfella
    • one year ago
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    3x -10 + 12x + 8 = 15x - 2

  47. snivvles.com
    • one year ago
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    so 3x-10+12x+8

  48. snivvles.com
    • one year ago
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    that equals 15x-2

  49. MeowLover17
    • one year ago
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    ohhhhhh okay thanks guys <3

  50. snivvles.com
    • one year ago
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    no problem.

  51. MeowLover17
    • one year ago
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    both @welshfella and @snivvles.com

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