Answer:
-4
Step-by-step explanation:
3(2)^2 - 5(2) - 6 = 12 - 10 - 6 = -4
The width of deck= x = 7 feet when perimeter is 48 feet and length is 17 feet
Step-by-step explanation:
Let width of rectangle = x
Let length of rectangle =3+2x
Perimeter of Rectangle = 48 feet
Width of rectangle = ?
The formula of perimeter is:
![perimeter= 2(L+W)](https://tex.z-dn.net/?f=perimeter%3D%202%28L%2BW%29)
Putting values of perimeter, length and width
![perimeter=2(L+W)\\48=2(3+2x+x)\\48=2(3+3x)\\48=6+6x\\6x=48-6\\6x=42\\x=\frac{42}{6}\\x=7](https://tex.z-dn.net/?f=perimeter%3D2%28L%2BW%29%5C%5C48%3D2%283%2B2x%2Bx%29%5C%5C48%3D2%283%2B3x%29%5C%5C48%3D6%2B6x%5C%5C6x%3D48-6%5C%5C6x%3D42%5C%5Cx%3D%5Cfrac%7B42%7D%7B6%7D%5C%5Cx%3D7)
So, the width of deck= x = 7
The length will be= 3+2x = 3+2(7) = 3+14 = 17
Keywords: perimeter of the rectangle
Learn more about perimeter of the rectangle at:
I’m think the answer is 28