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Mazyrski [523]
2 years ago
9

What are the center and radius of the circle defined by the equation x^2 + y^2 -6x + 8y + 21=0

Mathematics
1 answer:
NeTakaya2 years ago
7 0

Answer:

Step-by-step explanation:

(x²-6x)+(y²+8y)=-21

(x²-6x+9)+(y²+8y+16)=-21+9+16

(x-3)²+(y+4)²=4

center=(3,-4),radius=√4=2

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I need to answer and explain
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Answer:

parallel

Step-by-step explanation:

Solve both equations for y to make it easier to compare them.

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Since the slopes are the same, the two lines are parallel.

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2 years ago
Write the phrase as an expression. the difference of 12 and a number x
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Step-by-step explanation:

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What is the additive inverse of the complex number –8 + 3i?
Lady bird [3.3K]
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The additive inverse of the complex number -8 + 3i is 8 - 3i. The 3rd choice.


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