Not sure what that means
I guess it must be
-8x^2 + 3xy + (-9x) + (-3)
and
2ab + (-5ab^2) + (-9a^2b)
The square root is 4x6
If you have anymore, this should help you: http://www.math.com/students/calculators/source/square-root.htm
Area = Length x width.
The area of the wall is 8 x 8 = 64 square feet.
The area of one window is 4 x 5 = 20 square feet.
The area of the 3 windows is 20 x 3 = 60 square feet.
The percentage would be (area of windows / area of wall) x 100
Percentage = 60/64 = 0.9375 x 100 = 93.75% (round answer as needed)
Answer:
y = -2x + 5
Step-by-step explanation:
In order to be perpendicular to a given line, the other line must have an opposite reciprocal slope.
![y-3=-2(x-1)\\y-3=-2x+2\\y=-2x+5](https://tex.z-dn.net/?f=y-3%3D-2%28x-1%29%5C%5Cy-3%3D-2x%2B2%5C%5Cy%3D-2x%2B5)
Answer:
Length of the rectangular floor is 43 feet and width of rectangular floor is 31 feet.
Step-by-step explanation:
Given:
Perimeter of rectangular floor = 148 feet
Also a rectangular floor has a width which is 12 feet less than the length.
Let the length of the rectangular floor be 'l'.
and Let the width of the rectangular floor be 'w'.
So According to question.
![w=l-12\ \ \ \ equation \ 1](https://tex.z-dn.net/?f=w%3Dl-12%5C%20%5C%20%5C%20%5C%20equation%20%5C%201)
Now we know that;
Perimeter of rectangular floor is twice the sum of length and width.
framing in equation form we get;
![2(l+w)=148\\\\l+w = \frac{148}2\\\\l+w= 74 \ \ \ \ equation\ 2](https://tex.z-dn.net/?f=2%28l%2Bw%29%3D148%5C%5C%5C%5Cl%2Bw%20%3D%20%5Cfrac%7B148%7D2%5C%5C%5C%5Cl%2Bw%3D%2074%20%5C%20%5C%20%5C%20%5C%20equation%5C%202)
Now Substituting the equation 1 in equation 2 we get;
![l+l-12=74\\\\2l =74+12\\\\2l = 86\\\\l = \frac{86}{2} = 43\ ft](https://tex.z-dn.net/?f=l%2Bl-12%3D74%5C%5C%5C%5C2l%20%3D74%2B12%5C%5C%5C%5C2l%20%3D%2086%5C%5C%5C%5Cl%20%3D%20%5Cfrac%7B86%7D%7B2%7D%20%3D%2043%5C%20ft)
Substituting the value of 'l' in equation 1 we get;
![w =l-12 = 43-12 = 31 \ ft](https://tex.z-dn.net/?f=w%20%3Dl-12%20%3D%2043-12%20%3D%2031%20%5C%20ft)
Hence Length of the rectangular floor is 43 feet and width of rectangular floor is 31 feet.