Answer:
um im pretty sure y = -15 and x = -17 but im pretty sure i did that wrong too lol sorry if it is wront
Step-by-step explanation:
Answer:
C. 3x+6y=9 and-2x-4y=4
Step-by-step explanation:
Given
Steps:
The attachment completes the question
(a): -2x+4y=4 and -3x+6y=6
Multiply by 2: ![-2x+4y=4 ===> -4x + 8y = 4](https://tex.z-dn.net/?f=-2x%2B4y%3D4%20%3D%3D%3D%3E%20-4x%20%2B%208y%20%3D%204)
Multiply by 3: ![-3x+6y=6 ===> -6x + 12y = 12](https://tex.z-dn.net/?f=-3x%2B6y%3D6%20%3D%3D%3D%3E%20-6x%20%2B%2012y%20%3D%2012)
Add together
![-4x - 6x + 8y + 12y = 4 + 12](https://tex.z-dn.net/?f=-4x%20-%206x%20%2B%208y%20%2B%2012y%20%3D%204%20%2B%2012)
![-10x + 20y = 16](https://tex.z-dn.net/?f=-10x%20%2B%2020y%20%3D%2016)
B. 3x+y=12 and -3x+6y=6
Multiply by 2: ![3x+y=12 ===> 6x + 2y = 24](https://tex.z-dn.net/?f=3x%2By%3D12%20%3D%3D%3D%3E%206x%20%2B%202y%20%3D%2024)
Multiply by 3: ![-3x+6y=6 ==> -9x + 18y = 18](https://tex.z-dn.net/?f=-3x%2B6y%3D6%20%3D%3D%3E%20-9x%20%2B%2018y%20%3D%2018)
Add together:
![6x - 9x + 2y + 18y = 24 + 18](https://tex.z-dn.net/?f=6x%20-%209x%20%2B%202y%20%2B%2018y%20%3D%2024%20%2B%2018)
![-3y + 10y = 42](https://tex.z-dn.net/?f=-3y%20%2B%2010y%20%3D%2042)
C. 3x+6y=9 and-2x-4y=4
Multiply by 2: ![3x+6y=9 ===>6x + 12y = 18](https://tex.z-dn.net/?f=3x%2B6y%3D9%20%3D%3D%3D%3E6x%20%2B%2012y%20%3D%2018)
Multiply by 3: ![-2x-4y=4 ===> -6x - 12y = 12](https://tex.z-dn.net/?f=-2x-4y%3D4%20%3D%3D%3D%3E%20-6x%20-%2012y%20%3D%2012)
Add together:
![6x - 6x + 12y - 12y = 18 + 12](https://tex.z-dn.net/?f=6x%20-%206x%20%2B%2012y%20-%2012y%20%3D%2018%20%2B%2012)
![0 = 30](https://tex.z-dn.net/?f=0%20%3D%2030)
This is the equation the student could have used because 0 = 30 means the equation has no solution.
Answer:
TRUE
Step-by-step explanation:
there are 4000 milliliters in 4 liters
×║hope this helps║×