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BartSMP [9]
3 years ago
13

The length,l of a rectangle is 5/2 its width, w. The length, l, of the rectangle is 10 inches. what is the perimeter and the are

a?
Mathematics
1 answer:
guapka [62]3 years ago
4 0
P=2(L+W)
=2(2.05+10)
=2(12.05)
=24.1
A=LW
=2.05 x 10
=20.5
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I'm assuming this is a fraction.The concept is actually pretty simple.  What happens if you have 2/4?  You can simplify it into 1/2.  The concept is basically saying 2/(2*2) and here 2/2 = 1 so the 2 ont he top cancels out with one of the 2s on the bottom.  This canceling only works for multiplication and division.

You can also do this with variables.  x^3/x^7 can be rewritten as (x*x*x)/(x*x*x*x*x*x*x).  here the three on top cancel out three ont he bottom leaving 1/(x*x*x*x) = 1/x^4.  This also works if there are more on top.  x^8/x^2 = x^6.

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