Set the two equal to each other and solve for x
-2x+1 = -2x²+1
-2x= -2x²
x=x²
x²-x=0
x(x-1) =0, so x is either 0 or 1
two solutions, namely (0,1) and (1,1)
6 to the power of three is 216.
ANSWER
There are 16 fiction books
EXPLANATION
Let the number of nonfiction books be
![n](https://tex.z-dn.net/?f=n)
Then the number of fiction books is
![f=\frac{2n}{5}](https://tex.z-dn.net/?f=f%3D%5Cfrac%7B2n%7D%7B5%7D%20)
If there are 56 books in the library, then
![n + f= 56](https://tex.z-dn.net/?f=n%20%2B%20f%3D%2056)
This implies that,
![n + \frac{2n}{5} = 56](https://tex.z-dn.net/?f=n%20%2B%20%5Cfrac%7B2n%7D%7B5%7D%20%3D%2056)
Multiply through by 5 to get,
![5n + 2n = 280](https://tex.z-dn.net/?f=5n%20%2B%202n%20%3D%20280)
![7n= 280](https://tex.z-dn.net/?f=7n%3D%20280)
Divide through by 7 to get,
![n = \frac{280}{7}](https://tex.z-dn.net/?f=n%20%3D%20%5Cfrac%7B280%7D%7B7%7D%20)
![n= 40](https://tex.z-dn.net/?f=n%3D%2040)
Therefore the number of fiction books
![f=\frac{2\times40}{5}=16](https://tex.z-dn.net/?f=%20f%3D%5Cfrac%7B2%5Ctimes40%7D%7B5%7D%3D16%20)
Or
Answer:
A
Step-by-step explanation:
The root 5's cancel each other out.
4x-2x = 2x
Therefore
2x/3 is the final answer
i believe jan ran 1.5 fifths in one hr but im not sure