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anonymous

  • one year ago

The length of a rectangle is 3 feet more than twice its width. The area is 65 square feet. Find the dimensions of the rectangle using the quadratic formula.

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  1. amilapsn
    • one year ago
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    can you put what is said in the question into equations?

  2. anonymous
    • one year ago
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    |dw:1433905214940:dw| right?

  3. amilapsn
    • one year ago
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    yep

  4. anonymous
    • one year ago
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    ok

  5. anonymous
    • one year ago
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    \[2x ^{2} + 3w - 65 =0?\]

  6. amilapsn
    • one year ago
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    \(*2w^2\) ok?

  7. anonymous
    • one year ago
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    thats what i meant

  8. amilapsn
    • one year ago
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    not \(2x^2\)

  9. amilapsn
    • one year ago
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    Now you've to solve \(2w^2+3w-65=0\)

  10. anonymous
    • one year ago
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    \[-3\pm \sqrt{511} > divided by 4 ...\right?\]

  11. anonymous
    • one year ago
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    \[-3\pm \sqrt{511} divided by 4\]

  12. anonymous
    • one year ago
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    righ?

  13. amilapsn
    • one year ago
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    check b^2-4ac

  14. anonymous
    • one year ago
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    -511?

  15. amilapsn
    • one year ago
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    what's b?

  16. anonymous
    • one year ago
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    3

  17. anonymous
    • one year ago
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    ohh

  18. anonymous
    • one year ago
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    711?

  19. amilapsn
    • one year ago
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    b=3,a=2 and c= (-65), right?

  20. anonymous
    • one year ago
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    hm oh

  21. anonymous
    • one year ago
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    i got -511

  22. amilapsn
    • one year ago
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    plus or minus?

  23. anonymous
    • one year ago
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    minus

  24. anonymous
    • one year ago
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    waot

  25. amilapsn
    • one year ago
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    b^2-4ac=3^2-4x2x(-65),ok?

  26. anonymous
    • one year ago
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    789?

  27. anonymous
    • one year ago
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    ok?

  28. amilapsn
    • one year ago
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    then what would be the value?

  29. anonymous
    • one year ago
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    hmmm

  30. anonymous
    • one year ago
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    sstill gpt -511

  31. anonymous
    • one year ago
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    got

  32. amilapsn
    • one year ago
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    have you got a cal?

  33. anonymous
    • one year ago
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    yes

  34. anonymous
    • one year ago
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    i did 9 - (4)(2)(-65)

  35. amilapsn
    • one year ago
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    you did right then... https://www.google.com/search?q=3^2-4*2*%28-65%29&ie=utf-8&oe=utf-8

  36. anonymous
    • one year ago
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    oh

  37. anonymous
    • one year ago
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    ok ill go with 529 then, dont no what went wrong

  38. amilapsn
    • one year ago
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    I think you've forgotten to put minus sign to 65.... Am I right?

  39. anonymous
    • one year ago
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    added nine instead of subtracted 9 or something

  40. anonymous
    • one year ago
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    no

  41. anonymous
    • one year ago
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    anyway thx

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