Answer:
it would be line M. because there is more dots around the line than compared to the 9thwr lines so m would be the best choice.
length is 8m
Width is 6.5m
<u>Explanation:</u>
Let, width = b
So, length = 2b-5
area = 52![m^{2}](https://tex.z-dn.net/?f=m%5E%7B2%7D)
We know,
area of rectangle = length X width
So,
= ![(2b-5) X b](https://tex.z-dn.net/?f=%282b-5%29%20X%20b)
On solving the above equation, we get
Width, b = 6.5m
length, l = 8m
a) the independent variable is the number of training miles.
b) the dependent variable is the cost to mail the package
c) the dependent variable is P
The square of a binomial expands as follows:
![(a+b)^2=a^2+2ab+b^2](https://tex.z-dn.net/?f=%28a%2Bb%29%5E2%3Da%5E2%2B2ab%2Bb%5E2)
Expanding all the binomials, we have
![4k^2-36k+81+k^2+4k+4=4k^2+4k+1+k^2-16k+64](https://tex.z-dn.net/?f=4k%5E2-36k%2B81%2Bk%5E2%2B4k%2B4%3D4k%5E2%2B4k%2B1%2Bk%5E2-16k%2B64)
Sum like terms:
![5k^2-32k+85=5k^2-12k+65](https://tex.z-dn.net/?f=5k%5E2-32k%2B85%3D5k%5E2-12k%2B65)
Simplify terms appearing on both sides:
![-32k+85=-12k+65](https://tex.z-dn.net/?f=-32k%2B85%3D-12k%2B65)
Move all terms involving k to the left and all numbers to the right:
![-20k=-20](https://tex.z-dn.net/?f=-20k%3D-20)
Divide both sides by -20:
![k=1](https://tex.z-dn.net/?f=k%3D1)