anonymous
  • anonymous
The width of a retangle is fixed at 21cm. What length will make the perimeter greater then 76cm?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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anonymous
  • anonymous
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.
anonymous
  • anonymous
if you substract 76-42=34 divide by 2 =17 so can 17 be the answer to the question?
anonymous
  • anonymous
or it could be 18 cause that is larger also. so it would be 42+36= 78

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More answers

anonymous
  • anonymous
Go slow. the width is 21, therefore 2(21)
anonymous
  • anonymous
Call the length x, therefore 2x
anonymous
  • anonymous
2*21=441
anonymous
  • anonymous
2w + 2l > 76 This is the general equation, use your numbers from what I posted above to put in this equation.
anonymous
  • anonymous
441>76
anonymous
  • anonymous
the width is 21*2=441
anonymous
  • anonymous
so would that be 441+?=
anonymous
  • anonymous
You are locked in on something, and apparently ignored everything I have written.
anonymous
  • anonymous
well you have said 2w which is = width correct
anonymous
  • anonymous
The width is 2(21) that is given but that is not equal to 441?! That is mathematical nonsense.
anonymous
  • anonymous
I am trying to understand. Ok well I took it as 2*21 sry!!!!!
anonymous
  • anonymous
The perimeter is twice width and twice length. So the equation is 2(21)+2x>76
anonymous
  • anonymous
that is 42 sry I wrote it wrong.
anonymous
  • anonymous
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.
anonymous
  • anonymous
it just say the lenght must be greater then ? cm.
anonymous
  • anonymous
that is why I am came up with the answer that I have had.
anonymous
  • anonymous
I gotten 2x+42 so far
anonymous
  • anonymous
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.
anonymous
  • anonymous
so the answer is 17 for the lenght correct
anonymous
  • anonymous
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.
anonymous
  • anonymous
I know sorry I am not good at this but I got the correct answer.
anonymous
  • anonymous
Good job

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