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kimye21

The length of a rectangle is 3 inches more than three times the width. The perimeter is 78 inches. Find the length and width.

  • one year ago
  • one year ago

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  1. Shironlom
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    |dw:1348709556519:dw|

    • one year ago
  2. Mertsj
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    |dw:1348710092420:dw|

    • one year ago
  3. Mertsj
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    Add all the sides and set it equal to 78

    • one year ago
  4. kimye21
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    how do i get the length

    • one year ago
  5. Mertsj
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    Did you find w, the width?

    • one year ago
  6. kimye21
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    i got 25 for the width

    • one year ago
  7. Mertsj
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    How did you get that?

    • one year ago
  8. kimye21
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    i added the sides like said

    • one year ago
  9. kimye21
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    3w+3+w=78

    • one year ago
  10. kimye21
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    is that wrong

    • one year ago
  11. Mertsj
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    |dw:1348710695880:dw|

    • one year ago
  12. Mertsj
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    You must add ALL FOUR sides to get the perimeter.

    • one year ago
  13. kimye21
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    how do i fond the length

    • one year ago
  14. kimye21
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    find

    • one year ago
  15. Mertsj
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    Look at the picture. The width is w and the length is 3w + 3

    • one year ago
  16. kimye21
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    so i just plug in the width and i get my answer

    • one year ago
  17. Mertsj
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    What is w?

    • one year ago
  18. kimye21
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    9

    • one year ago
  19. Mertsj
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    What is 3w?

    • one year ago
  20. kimye21
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    do u mean 3*9 or 3w more than the width

    • one year ago
  21. Mertsj
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    3w means 3 times w so if w is 9 then 3w means 3 times 9 which is 27. So 3w = 27. Now what is 3w + 3?

    • one year ago
  22. kimye21
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    30

    • one year ago
  23. Mertsj
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    So what is the length of the rectangle?

    • one year ago
  24. kimye21
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    w is 9 and the length is 30

    • one year ago
  25. Mertsj
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    Good job!!

    • one year ago
  26. Mertsj
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    Does that make the perimeter 78?

    • one year ago
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