Answer:
B
Step-by-step explanation:
Have a nice day
Answer:
-6x^2-288
Step-by-step explanation:
18x - 432 - 18x - 6x² +144
Combine like terms
-6x^2+18x-18x-432+144
-6x^2-288
Given :
Two equation
and
.
To Find :
The point of intersection of these lines .
Solution :
We will use elimination method :
From equation 1 :
![x_1=7-5x_2](https://tex.z-dn.net/?f=x_1%3D7-5x_2)
Putting value of
in equation 2 we get :
![(7-5x_2)-2x_2=-2\\\\7-7x_2=-2\\\\x_2=\dfrac{9}{7}](https://tex.z-dn.net/?f=%287-5x_2%29-2x_2%3D-2%5C%5C%5C%5C7-7x_2%3D-2%5C%5C%5C%5Cx_2%3D%5Cdfrac%7B9%7D%7B7%7D)
Putting value of
in equation 1 we get :
![x_1+5\times \dfrac{9}{7}=7\\\\x_1=\dfrac{4}{7}](https://tex.z-dn.net/?f=x_1%2B5%5Ctimes%20%5Cdfrac%7B9%7D%7B7%7D%3D7%5C%5C%5C%5Cx_1%3D%5Cdfrac%7B4%7D%7B7%7D)
Therefore , point of interaction is
.
Hence , this is the required solution .
Look at the original equation. 6x9=54. all you are doing is switching numbers up. 54/9=6. or 54/9=6.
Answer:
23
Step-by-step explanation:
because it was eight more.
because it was four times the amount .
The answer is 23