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anonymous

  • one year ago

solve for x (WILL FAN AND MEDAL!!!) -4x(+16)=116

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  1. Photon336
    • one year ago
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    \[-4x+16=116\] this is what you have right? @carsonce

  2. anonymous
    • one year ago
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    yep

  3. Photon336
    • one year ago
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    Subtract 16 from both sides -4x+16 = 116-16 -16 This is what we get. -4x = 100 -4 -4 now divide both sides by -4 x = 100/-4 = -25 x = -25

  4. anonymous
    • one year ago
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    I just need to know how to identify the solution

  5. anonymous
    • one year ago
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    Oh wow thank you

  6. Photon336
    • one year ago
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    @carsonce please let me know if there's something you don't get

  7. Photon336
    • one year ago
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    we can check this too watch

  8. Photon336
    • one year ago
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    -4(-25) = 100 + 16 = 116 116 = 116 this is how we check

  9. anonymous
    • one year ago
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    Ohhh that makes sense

  10. Photon336
    • one year ago
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    if you need any more help let me know

  11. anonymous
    • one year ago
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    How would you do this? The perimeter of a rectangular photo is 72 cm. The length is twice the width. What are the length and width of the photo?

  12. anonymous
    • one year ago
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    @Photon336

  13. Photon336
    • one year ago
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    let's translate this the length is TWICE the width So the length is 2x and the width is x Does this make sense? |dw:1444170894921:dw|

  14. Photon336
    • one year ago
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    @carsonce

  15. anonymous
    • one year ago
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    yes

  16. Photon336
    • one year ago
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    so let's work this out perimeter means that we must add up all the sides

  17. anonymous
    • one year ago
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    How would I do that?

  18. Photon336
    • one year ago
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    we add up all the sides

  19. Photon336
    • one year ago
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    2x+2x+x+x = 72 and set them equal to 72 because perimeter means to sum up all the sides.

  20. anonymous
    • one year ago
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    Oh ok

  21. Photon336
    • one year ago
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    follow?

  22. anonymous
    • one year ago
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    Yep

  23. Photon336
    • one year ago
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    Now 6x = 72 6 6 x = 12

  24. Photon336
    • one year ago
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    2(12) = 24 that's the length and 12 is the width does this make sense?

  25. anonymous
    • one year ago
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    Yeah thank you so much

  26. Photon336
    • one year ago
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    absolutely if you need anything let me know take care

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