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anonymous

  • 5 years ago

The width of a retangle is fixed at 21cm. What length will make the perimeter greater then 76cm?

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  1. anonymous
    • 5 years ago
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    ok well I have go this far I think. a retangle has four sides. two sides are fixed at 21cm so that would be 42cm. they want it to be greater then 76.

  2. anonymous
    • 5 years ago
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    if you substract 76-42=34 divide by 2 =17 so can 17 be the answer to the question?

  3. anonymous
    • 5 years ago
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    or it could be 18 cause that is larger also. so it would be 42+36= 78

  4. anonymous
    • 5 years ago
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    Go slow. the width is 21, therefore 2(21)

  5. anonymous
    • 5 years ago
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    Call the length x, therefore 2x

  6. anonymous
    • 5 years ago
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    2*21=441

  7. anonymous
    • 5 years ago
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    2w + 2l > 76 This is the general equation, use your numbers from what I posted above to put in this equation.

  8. anonymous
    • 5 years ago
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    441>76

  9. anonymous
    • 5 years ago
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    the width is 21*2=441

  10. anonymous
    • 5 years ago
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    so would that be 441+?=

  11. anonymous
    • 5 years ago
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    You are locked in on something, and apparently ignored everything I have written.

  12. anonymous
    • 5 years ago
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    well you have said 2w which is = width correct

  13. anonymous
    • 5 years ago
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    The width is 2(21) that is given but that is not equal to 441?! That is mathematical nonsense.

  14. anonymous
    • 5 years ago
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    I am trying to understand. Ok well I took it as 2*21 sry!!!!!

  15. anonymous
    • 5 years ago
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    The perimeter is twice width and twice length. So the equation is 2(21)+2x>76

  16. anonymous
    • 5 years ago
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    that is 42 sry I wrote it wrong.

  17. anonymous
    • 5 years ago
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    That is the equation, in the equation x represents the length. Depending on what answer your teacher wants you present the equation or you solve for x if you specifically want the length.

  18. anonymous
    • 5 years ago
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    it just say the lenght must be greater then ? cm.

  19. anonymous
    • 5 years ago
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    that is why I am came up with the answer that I have had.

  20. anonymous
    • 5 years ago
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    I gotten 2x+42 so far

  21. anonymous
    • 5 years ago
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    Solve the equation and the answer x>17. You got this same answer earlier so you are apparently doing the right thing. I have just put in a neat equation so that if you have to explain it to your little brother he would understand it.

  22. anonymous
    • 5 years ago
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    so the answer is 17 for the lenght correct

  23. anonymous
    • 5 years ago
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    You don't have to ask me, just solve the equation for x; and remove all doubt. But your language and phraseology is wrong: the length must be GREATER THAN 17.

  24. anonymous
    • 5 years ago
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    I know sorry I am not good at this but I got the correct answer.

  25. anonymous
    • 5 years ago
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    Good job

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