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Blababa [14]
4 years ago
6

To solve the following system of equations by elimination, which operation would you perform first?

Mathematics
2 answers:
Bingel [31]4 years ago
8 0
Answer is <span>G. Subtraction

</span><span>234x+65y=219
1225x+65y=-427
</span><span>----------------------subtract

-991x = 646 to eliminate y and solve for x

</span>
Ilya [14]4 years ago
5 0
I believe it is G. I'm not good at explaining why I'm think that. But I hope it helps you.
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What is the cross section shown below?
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<h3>Answer: Choice A) circle</h3>

Explanation:

Imagine that white rectangle as a blade that cuts the cylinder as the diagram shows. If you pull the top cylinder off and examine the bottom of that upper piece, then you'll see a circle forms. It's congruent to the circular face of the original cylinder. This is because the cutting plane is parallel to both base faces of the cylinder. Any sort of tilt will make an ellipse form. Keep in mind that any circle is an ellipse, but not vice versa.

Another example of a cross section: cut an orange along its center and notice that a circle (more or less) forms showing the inner part of the orange.

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