Answer:
I am really sorry i dont know the answer
Step-by-step explanation:
Answer:
240 girls
Step-by-step explanation:
Let number of girls be x.
160:x = 2:3
Multiply right side by 80--> 160:x = 160:240
x=240.
So there are 240 girls.
Answer:
f(x)= 3x-4
f(-1)= 3*-1-4
f(-1)= 2-4
f(-1)= -2
f(x)= 3x-4
f(3)= 3*3-4
f(3)= 9-4
f(3)=5
f(x)= 3x-4
f(1)= 3*1-4
f(1)= 3-4
f(1)= -1
Step-by-step explanation:
For this case we must find the x-intercepsts of the following function:
![g (x) = - 2 (x-4) (x + 1)](https://tex.z-dn.net/?f=g%20%28x%29%20%3D%20-%202%20%28x-4%29%20%28x%20%2B%201%29)
For this we do
, that is:
. So:
![0 = -2 (x-4) (x + 1)](https://tex.z-dn.net/?f=0%20%3D%20-2%20%28x-4%29%20%28x%20%2B%201%29)
The values of "x" that comply with equality are:
![x_ {1} = 4\\x_ {2} = - 1](https://tex.z-dn.net/?f=x_%20%7B1%7D%20%3D%204%5C%5Cx_%20%7B2%7D%20%3D%20-%201)
Thus, the x-intercepsts of the function are:
![(x_ {1}, y_ {1}) :( 4,0)\\(x_ {2}, y_ {2}): (- 1,0)](https://tex.z-dn.net/?f=%28x_%20%7B1%7D%2C%20y_%20%7B1%7D%29%20%3A%28%204%2C0%29%5C%5C%28x_%20%7B2%7D%2C%20y_%20%7B2%7D%29%3A%20%28-%201%2C0%29)
Answer:
![(x_ {1}, y_ {1}) :( 4,0)\\(x_ {2}, y_ {2}): (- 1,0)](https://tex.z-dn.net/?f=%28x_%20%7B1%7D%2C%20y_%20%7B1%7D%29%20%3A%28%204%2C0%29%5C%5C%28x_%20%7B2%7D%2C%20y_%20%7B2%7D%29%3A%20%28-%201%2C0%29)