Mathematics
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OpenStudy (anonymous):
The length of a rectangle is 3 yd more than twice its width, and the area of the rectangle is 35 yd^2 Find the dimensions of the rectangle.
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OpenStudy (anonymous):
A = w * l
= w * ( 3 + 2w) = 35 yd²
Can you continue
OpenStudy (anonymous):
lemme try
OpenStudy (anonymous):
Post your solution, I'll be back to check it :)
OpenStudy (anonymous):
this is what came up with me 3w+2w^2-35=0
OpenStudy (anonymous):
Great, can you solve for w? ( just like x)
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OpenStudy (anonymous):
you want me to factor it ?
OpenStudy (anonymous):
Yep!
OpenStudy (anonymous):
ok i got it
OpenStudy (anonymous):
-5,7/2
OpenStudy (anonymous):
Wow, you're fast :D
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OpenStudy (anonymous):
where is the width and the length ?
OpenStudy (anonymous):
Just take positive value width w = 3.5 ft
Can you plug it back to find length?
OpenStudy (anonymous):
how did you get 3.5 ?
OpenStudy (anonymous):
7/2
OpenStudy (anonymous):
oh ok
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OpenStudy (anonymous):
so the equation its fonna be like this :
3.5=35.L
OpenStudy (anonymous):
Check my first post to find out L = ...?
OpenStudy (anonymous):
L=A/W
OpenStudy (anonymous):
Nice try, but look more carefully :P
OpenStudy (anonymous):
l=w/a ?
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OpenStudy (anonymous):
My first post, the second line! What do you understand?
OpenStudy (anonymous):
You already had the width, now find out the relationship of width and length to => L
OpenStudy (anonymous):
i cant get it
OpenStudy (anonymous):
"The length of a rectangle is 3 yd more than twice its width"
=> L = 3 + 2w
OpenStudy (anonymous):
so the length is 5 ?
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OpenStudy (anonymous):
What is your width?
OpenStudy (anonymous):
3.5?
OpenStudy (anonymous):
Length L = 3 + 2 * 3.5 = ....