Step-by-step explanation:
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Answer:
can u type it so i can answer, i cant see it
Step-by-step explanation:
Answer:
Length 7 feet and Width 5 feet
Step-by-step explanation:
we know that
The area of the rectangle ( a dining room table) is equal to
![A=LW](https://tex.z-dn.net/?f=A%3DLW)
where
![L=(3x+1)\ ft](https://tex.z-dn.net/?f=L%3D%283x%2B1%29%5C%20ft)
![W=(3x-1)\ ft](https://tex.z-dn.net/?f=W%3D%283x-1%29%5C%20ft)
![A=35\ ft^2](https://tex.z-dn.net/?f=A%3D35%5C%20ft%5E2)
substitute
![35=(3x+1)(3x-1)](https://tex.z-dn.net/?f=35%3D%283x%2B1%29%283x-1%29)
Apply difference of squares right side
![35=9x^2-1](https://tex.z-dn.net/?f=35%3D9x%5E2-1)
![9x^2=36\\x^2=4\\x=\pm2](https://tex.z-dn.net/?f=9x%5E2%3D36%5C%5Cx%5E2%3D4%5C%5Cx%3D%5Cpm2)
Remember that the length cannot be a negative number
so
x=2
<em>Find the length</em>
![L=(3(2)+1)=7\ ft](https://tex.z-dn.net/?f=L%3D%283%282%29%2B1%29%3D7%5C%20ft)
<em>Find the width </em>
![W=(3(2)-1)=5\ ft](https://tex.z-dn.net/?f=W%3D%283%282%29-1%29%3D5%5C%20ft)
Answer:
Step-by-step explanation:add by 13
12 + 13 = 25
25+ 13= 38