Solve the following system using elimination 2x+4y=8 6x+10y=30

So to use the elimination method, we need to put these equations on top of each other so that we can eliminate a variable:

If we multiply the top equation by -3, we can eliminate the x variable:

And we simplify. Then we add the two equations together:

+

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Then we solve for y:

Then we need to return to one of the original equations (either will work) and plug y in. Then we will solve for x. Let's choose the first equation:

So now we know that our solution is: (10, -3).

all the angles opposite to the angle 150 would be 150 and all the angles that are next to 150 are 30 because they equal 180 it you add it up.

step-by-step explanation:

c.

step-by-step explanation:

substitution for (0,1)

y=x^2+4x+1

1=0^2+4(x)0+1

1=0+4(x)0+1

1=4(x)0+1

1=0+1

1=1

substitution for (-3,-2)

y=x+1

-2=-3+1

-2=-2