Answer:
345700
Step-by-step explanation:
79600+145700+120400=345700
Answer:
13x^2-7x-6
Step-by-step explanation:
You combine like terms.
$2.38/0.40 lb = $5.95/1 lb
The spinach cost $5.95 per pound.
Hope this helps you:)
Notice that half of the coefficient of x is (1/2)(-4), or -2.
Then x^2 - 4x becomes
x^2 - 4x + 4 - 4 = 0, or (x -2)^2 = 4. Then x = -2 plus or minus 2, and the two roots are 0 and -4.
Thus, add 4 to both sides to obtain x^2 - 4x + 4 = 4.
Answer:
Part 1) ![x=77-2y](https://tex.z-dn.net/?f=x%3D77-2y)
Part 2) ![y=38.5-0.5x](https://tex.z-dn.net/?f=y%3D38.5-0.5x)
Step-by-step explanation:
we have
![2x+4y-31=123](https://tex.z-dn.net/?f=2x%2B4y-31%3D123)
Part 1) Solve for x
That means -----> isolate the variable x
![2x+4y-31=123](https://tex.z-dn.net/?f=2x%2B4y-31%3D123)
Subtract 4y both sides
![2x+4y-31-4y=123-4y](https://tex.z-dn.net/?f=2x%2B4y-31-4y%3D123-4y)
![2x-31=123-4y](https://tex.z-dn.net/?f=2x-31%3D123-4y)
Adds 31 both sides
![2x-31+31=123-4y+31](https://tex.z-dn.net/?f=2x-31%2B31%3D123-4y%2B31)
![2x=154-4y](https://tex.z-dn.net/?f=2x%3D154-4y)
Divide by 2 both sides
![2x/2=(154-4y)/2](https://tex.z-dn.net/?f=2x%2F2%3D%28154-4y%29%2F2)
![x=(154-4y)/2](https://tex.z-dn.net/?f=x%3D%28154-4y%29%2F2)
![x=77-2y](https://tex.z-dn.net/?f=x%3D77-2y)
Part 2) Solve for y
That means -----> isolate the variable y
![2x+4y-31=123](https://tex.z-dn.net/?f=2x%2B4y-31%3D123)
Subtract 2x both sides
![2x+4y-31-2x=123-2x](https://tex.z-dn.net/?f=2x%2B4y-31-2x%3D123-2x)
![4y-31=123-2x](https://tex.z-dn.net/?f=4y-31%3D123-2x)
Adds 31 both sides
![4y-31+31=123-2x+31](https://tex.z-dn.net/?f=4y-31%2B31%3D123-2x%2B31)
![4y=154-2x](https://tex.z-dn.net/?f=4y%3D154-2x)
Divide by 4 both sides
![4y/4=(154-2x)/4](https://tex.z-dn.net/?f=4y%2F4%3D%28154-2x%29%2F4)
![y=(154-2x)/4](https://tex.z-dn.net/?f=y%3D%28154-2x%29%2F4)
![y=38.5-0.5x](https://tex.z-dn.net/?f=y%3D38.5-0.5x)