-3 + -2 = -5
-5 + 5 = 0
0 x 2 = 0
Jacob wants to build a rectangular enclosure for his animals. One side of the pen will be against the barn,so he needs no fence on that side.
Let w be the width of the enclosure (perpendicular to the barn) and let l be the length of the enclosure (parallel to the barn).
one side of the length is not counted for perimeter because one side of length will be against the barn.
Perimeter = 400 ft
Perimeter of rectangle = L + W + W
400 = L + 2W
L = 400 - 2W
Area = L * W
Replace L by 400 - 2W
A(W) = (400 - 2W) * W
![A(W) = -2W^2 + 400W](https://tex.z-dn.net/?f=A%28W%29%20%3D%20-2W%5E2%20%2B%20400W)
Now we find out x coordinate of vertex to find the width that maximize the area
![W = \frac{-b}{2a}](https://tex.z-dn.net/?f=W%20%3D%20%5Cfrac%7B-b%7D%7B2a%7D)
a= -2 and b = 400
![W = \frac{-(400)}{2(-2)}=100](https://tex.z-dn.net/?f=W%20%3D%20%5Cfrac%7B-%28400%29%7D%7B2%28-2%29%7D%3D100)
The width w would maximize the area is w = 100ft
To find maximum area we plug in 100 for W in A(W)
![A(W) = -2W^2 + 400W](https://tex.z-dn.net/?f=A%28W%29%20%3D%20-2W%5E2%20%2B%20400W)
![A(W) = -2(100)^2 + 400(100)= 20000](https://tex.z-dn.net/?f=A%28W%29%20%3D%20-2%28100%29%5E2%20%2B%20400%28100%29%3D%2020000)
the maximum area is 20,000 square feet
<span>We have to calculate the circumference of a circle and to choose the correct answer. The circumference of a circle is given by a formula: C = 2 r Pie. In this case radius of the circle is : r = 2.2. Therefore C = 2 * 2.2 Pie = 4.4 Pie. Answer: The circumference of the circle is: D ) 4.4 Pie.</span>
Answer:
Yes.
Step-by-step explanation:
You are correct except to the nearest hundredth it is 795.54 cm^2.
Y= x+1
y-3 = (-2-3)/(-3-2) (x-2)
y-3 = 1 (x-2)
y = x-2+3
y=x+1
Mark brainliest please