Answer:
it is multiplying 3 but doubled
Step-by-step explanation:
Distance=amount of gas times miles per gallon
distance=y
amount of gas=x
mpg=?
given
y=300
x=10
300=10 times ?
divide both sidesj by 10
30=?
equation is
y=x times 30 or
y=30x
Answer:
X= 16
Step-by-step explanation:
Espero que mi respuesta te ayude.
Four times fifteen plus twenty in parentheses
idk if its correct though <span />
Answer:
The correct option is d.
Step-by-step explanation:
The given equations are
.... (1)
.... (2)
In equation 2, multiply both sides by 2.
.... (3)
Now add equation (1) and (3).
![x-2y+2y=2+(-4x+10)](https://tex.z-dn.net/?f=x-2y%2B2y%3D2%2B%28-4x%2B10%29)
![x=2-4x+10](https://tex.z-dn.net/?f=x%3D2-4x%2B10)
![x+4x=12](https://tex.z-dn.net/?f=x%2B4x%3D12)
![5x=12](https://tex.z-dn.net/?f=5x%3D12)
Divide both sides by 5.
![x=\frac{12}{5}=2.4](https://tex.z-dn.net/?f=x%3D%5Cfrac%7B12%7D%7B5%7D%3D2.4)
Put this value in equation (2).
![y=-2(2.4)+5](https://tex.z-dn.net/?f=y%3D-2%282.4%29%2B5)
![y=-4.8+5](https://tex.z-dn.net/?f=y%3D-4.8%2B5)
![y=0.2](https://tex.z-dn.net/?f=y%3D0.2)
Therefore the solution of the system of equation is (2.4,0.2) and the system has only one solution. Option d is correct.