Answer:O0
Step-by-step explanation:
2*(v-2)-(-3-2*v)=0
STEP
1
:
Equation at the end of step 1
(0 - 2 • (v - 2)) - (-2v - 3) = 0
STEP
2
:
Equation at the end of step 2
7 = 0
STEP
3
:
Equations which are never true:
3.1 Solve : 7 = 0
This is a working backwards problem. You know he has $35 at the end. Before he gave his brother $5, he would have $40, which is half of what he had before he bought the clothes, so he would have had $80. Before he spent the $40 on shoes, he would have had $120, so the answer is $120.
I think the top right 1 is linear
Top left is neither and bottom is exponential
Since you need an isolated variable to use the substitution method, we need to re-arrange one of the equations. This will probably be easiest to do with the first one.
Add 5y to both sides of the first equation.
x=10+5y
Now, in the second equation, put in 10+5y in any spot that has an x.
2(10+5y)-10y=20
Distribute the 2 to both numbers in the parenthesis.
20+10y-10y=20
Combine like terms.
20=20
This means that the two equations are actually the same. You can see this if you multiply the whole first equation by 2
2(x-5y=10)
2x-10y=20, which is the same as the second equation. Therefore, the two equations are actually the same one.