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lutik1710 [3]
2 years ago
15

Which ordered pair is the solution to the system of equations? {x+3y=-12, y= 1/3x-6?

Mathematics
1 answer:
Julli [10]2 years ago
5 0

For this, I'll be using the substitution method. Since y = 1/3x - 6, replace the y variable in the first equation with 1/3x - 6 and solve for x:

x+3(\frac{1}{3}x-6)=-12\\ x+x-18=-12\\ 2x-18=-12\\ 2x=6\\ x=3

Now that we have the value of x, plug it into either equation to solve for y:

3+3y=-12\\ 3y=-15\\ y=-5\\ \\ y=\frac{1}{3}*3-6\\ y=1-6\\ y=-5

<h3><u>In short, the solution to this equation is (3,-5).</u></h3>
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To solve this you need to compare the lengths given to you in the question statement.

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Both triangles are similar triangles, so we can see triangle ADE as a larger version of angle AGF.

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1. Formula for volume of a cone is: V = PI * r * h/3

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