Answer:
72
Step-by-step explanation:
x/6 - 10 = 2
x/6 = 12 (add 10 to both sides)
x = 72 (multiply 6 to both sides)
9 - 2c + c = -13
9 - 3c = -13
-3c = -22
c = 7 1/3
7/3 = 1/x
7x = 3
x = 3/7
3/7 of a cup of red paint should be added to 1 cup of white paint
Answer:
first option
(8, -1)
Step-by-step explanation:
We have the following system of linear equations
![\left \{{{x+6y=2} \atop {5x+4y=36}} \right.](https://tex.z-dn.net/?f=%5Cleft%20%5C%7B%7B%7Bx%2B6y%3D2%7D%20%5Catop%20%7B5x%2B4y%3D36%7D%7D%20%5Cright.)
To solve the system multiply the first equation by -5 and then add it to the second equation.
![-5*(x+6y)=2*(-5)](https://tex.z-dn.net/?f=-5%2A%28x%2B6y%29%3D2%2A%28-5%29)
![-5x -30y=-10\\5x+4y=36](https://tex.z-dn.net/?f=-5x%20-30y%3D-10%5C%5C5x%2B4y%3D36)
-----------------
![-26y = 26](https://tex.z-dn.net/?f=-26y%20%3D%2026)
![y = -1](https://tex.z-dn.net/?f=y%20%3D%20-1)
substitute
in any of the two equations and then solve for x
![5x+4(-1)=36\\5x-4=36\\5x = 36+4\\5x = 40\\](https://tex.z-dn.net/?f=5x%2B4%28-1%29%3D36%5C%5C5x-4%3D36%5C%5C5x%20%3D%2036%2B4%5C%5C5x%20%3D%2040%5C%5C)
![x =8](https://tex.z-dn.net/?f=x%20%3D8)
The answer is the first option
(8, -1)
I think it’s 8 because when i divide 2.93 by 1/4 it’s 11.3948393 and it says how many can he make so it has to b 8