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anonymous

  • one year ago

A rectangular pen is to be built against a wall using 60 m of fencing for the three sides which need fencing. If the area of the pen is to be as large as possible, find the length of the longest side and also its maximum area.

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  1. jameshorton
    • one year ago
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    450 sq.m

  2. anonymous
    • one year ago
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    I agree with @jameshorton @Devanshi

  3. anonymous
    • one year ago
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    How?

  4. jameshorton
    • one year ago
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    a = xy y + 2x = 60 y = 60 - 2x --- a = x(60 - 2x) a = 60x - 2xx --- -2xx + 60x = 0 --- the above quadratic equation is in standard form, with a=-2, b=60 and c=0 --- to solve the quadratic equation, by using the quadratic formula, copy and paste this: -2 60 0 into this solver: https://sooeet.com/math/quadratic-equation-solver.php --- the quadratic has two real roots at: --- x = 0 x = 30 --- the quadratic has a vertex maximum at: ( 15, 450 ) --- maximum area (a) occurs when x = 15: y = 60 - 2*15 y = 30 m --- answer: x = 15 m y = 30 m max area = 450 sq.m ---

  5. jameshorton
    • one year ago
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    what grade are u in

  6. anonymous
    • one year ago
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    Who me or @Devanshi

  7. jameshorton
    • one year ago
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    both of ya

  8. anonymous
    • one year ago
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    I am doing my A levels

  9. jameshorton
    • one year ago
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    oh

  10. anonymous
    • one year ago
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    and you

  11. jameshorton
    • one year ago
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    6th

  12. anonymous
    • one year ago
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    Really You are pretty smart

  13. jameshorton
    • one year ago
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    yea my mom teach me and my mom is a docter

  14. anonymous
    • one year ago
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    Ok

  15. anonymous
    • one year ago
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    How is this the standard form of equation? @lauren.ascough

  16. jameshorton
    • one year ago
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    @ganeshie8

  17. jameshorton
    • one year ago
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    @Conqueror

  18. anonymous
    • one year ago
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    So you just copy pasted the answer @jameshorton ?

  19. jameshorton
    • one year ago
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    no why

  20. jameshorton
    • one year ago
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    what

  21. anonymous
    • one year ago
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    @jameshorton did you just copy that ???

  22. jameshorton
    • one year ago
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    no

  23. anonymous
    • one year ago
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    But it is the same

  24. jameshorton
    • one year ago
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    i know

  25. anonymous
    • one year ago
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    James are you lieing

  26. jameshorton
    • one year ago
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    no

  27. anonymous
    • one year ago
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    Just explain the standard equation? @jameshorton ?

  28. anonymous
    • one year ago
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    it even has the same web address james we know you took it from there just tell us the truth

  29. anonymous
    • one year ago
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    @jameshorton come on tell us the truth

  30. jameshorton
    • one year ago
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    u want the fing truth no i didnt copy it and my real name is not jameshorton

  31. jameshorton
    • one year ago
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    i used my dad name to create that site that is my site

  32. anonymous
    • one year ago
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    lol

  33. jameshorton
    • one year ago
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    my real name is jacob

  34. jameshorton
    • one year ago
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    jacob lamb

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