Answer:
4x^2 - 28x
Step-by-step explanation:
area = length * width
a = 4x * (x-7)
4x^2 - 28x
WHAT DOES THIS MEAN? I’m confused
Answer:
12 inches
Step-by-step explanation:
Raj tested his new flashlight by shinning it on his bedroom wall the beam of the light can be described by the equation (x^2-2x) + (y^2-4y) - 31=0. how many inches wide is the beam of light on the wall
Solution
Given:
(x^2-2x) + (y^2-4y) - 31=0
By completing the square
(x^2-2x) + (y^2-4y) - 31=0
(x^2-2x+1-1) + (y^2-4y+4-4)-31=0
(x-1)^2 -1 + (y-2)^2 - 4 - 31=0
(x-1)^2 + (y-2)^2 - 1 - 4 - 31=0
(x-1)^2 + (y-2)^2 - 36=0
(x-1)^2 + (y-2)^2=36
Writing the equation in the form: (x-h)^2+(y-k)^2=r^2
(x-1)^2+(y-2)^2=6^2
From the above, r=6
Where,
r=radius
how wide is the diameter ?
radius=6
Diameter= 2 × radius
=2×6
=12 inches
Answer:
324 inches^2
Step-by-step explanation:
So to start off we will find the area of the rectangles.
So on has side lenghts of 15 and 6 meters.
So the area for that would be 90, after multiplying 15 and 6.
The next one has side lenghts of 9 and 6.
And after multiplying you would get 54.
For the last rectangle the side lenghts are 12 and 6.
And after multiplying you would get 72.
So adding all that together is 216 meters^2.
Now for the two triangles.
The height is 9 and the base is 12.
So after multiplying you would get 54.
Same for the other one so adding them up it would be 108.
Hence, adding 108 and 216 the answer is 324inches^2
Answer:
The width is: 
The length is 
Step-by-step explanation:
The given rectangle has area given algebraically by the function:
The width of the rectangle is the greatest common factor of 
, 
and 
That is the width is:
We now divide the area by the width to obtain the length of the rectangle:
This simplifies to:
