Ok. first you have to pick x or y or whatever variable you have and the number multiplied with it has to be the same in each equation but one has to be positive and one negative.
lets pick x
y=-2x+6
3y=x-3/ *2
so the x are positive and negative we have to multiply the equation with 2
y=-2x+6
6y=2x-6
now you have to add the equations. you do that by adding each side of the equatins together like this:
y+6y=-2x+6+2x-6 the x will cancel out
7y=0
y=0
now just go back to one of the previous equations and put the y in it.
0=-2x+6
2x=6
x=3
here you go
Answer:
See attachment
Step-by-step explanation:
The given equation is:
We divide through by 3 to obtain;
This is rewritten as:
This is the equation of a circle centered at the origin with radius 5 units.
He walked 45 mins and burned 250 i think hope i helped
Answer:
If I'm thinking right then the answer should be 5% ?
There's 8 students total if I'm correct?
2 people got 15.
2 people got 16.
1 person got 17.
2+2+1=5
2 person got 14.
1 person got 12.
2+1=3 There's 8 students total. but the answer should be 5%.
