Answer:
![\boxed {x = 54}](https://tex.z-dn.net/?f=%5Cboxed%20%7Bx%20%3D%2054%7D)
Step-by-step explanation:
Solve for the value of
:
![7(x - 5) - 9 = 334](https://tex.z-dn.net/?f=7%28x%20-%205%29%20-%209%20%3D%20334)
-Use <u>Distributive Property</u>:
![7(x - 5) - 9 = 334](https://tex.z-dn.net/?f=7%28x%20-%205%29%20-%209%20%3D%20334)
![7x - 35 - 9 = 334](https://tex.z-dn.net/?f=7x%20-%2035%20-%209%20%3D%20334)
-Combine like terms:
![7x - 35 - 9 = 334](https://tex.z-dn.net/?f=7x%20-%2035%20-%209%20%3D%20334)
![7x - 44 = 334](https://tex.z-dn.net/?f=7x%20-%2044%20%3D%20334)
-Add both sides by
:
![7x - 44 + 44 = 334 + 44](https://tex.z-dn.net/?f=7x%20-%2044%20%2B%2044%20%3D%20334%20%2B%2044)
![7x = 378](https://tex.z-dn.net/?f=7x%20%3D%20378)
-Divide both sides by
:
![\frac{7x}{7}= \frac{378}{7}](https://tex.z-dn.net/?f=%5Cfrac%7B7x%7D%7B7%7D%3D%20%5Cfrac%7B378%7D%7B7%7D)
![\boxed {x = 54}](https://tex.z-dn.net/?f=%5Cboxed%20%7Bx%20%3D%2054%7D)
Therefore, the value of
is
.
Answer:
y = -x - 8
Step-by-step explanation:
Slope is -1 and y intercept is -8
Answer:
$2000
Step-by-step explanation:
the profit would be determined by how many computers are involved, so that would vary
Answer: need point so HA!
Step-by-step explanation:
Hi there!
So, our two equations are:
2x + 3y = 20 and
-2x + y = 4
We can see that the x's will cancel out because they're the same number, opposite signs. Then we're left with 4y = 24.
Divide 24 by 4, which is 6.
y = 6, then we plug that in to the first equation for y:
2x + 3(6) = 20
2x + 18 = 20
2x = 2
x = 1
So, she made her first mistake when adding the equations, adding 20 and 4, she somehow got 16.
The solution to the system is (1,6).
I hope I helped!