2 years ago

Please help, timed! Will mark brainliest!!

Mathematics

1 answer:

True [87]2 years ago

3 0

Answer:

The answer would be b!

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You are right. In circle equation we have =r² so the correct answer will be C od D. But we have to calculate the center of a circle.

$x^2+y^2-8x-6y+24=0\quad|-24\\\\(x^2-8x)+(y^2-6y)=-24$

Complete the square:

$x^2-8x+a^2\implies a=\dfrac{8x}{2x}=4\implies x^2-8x+4^2\\\\\\y^2-6y+b^2\implies b=\dfrac{6y}{2y}=3\implies y^2-6y+3^2$

And we have:

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So the answer is C (the same left side of equation).

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3 years ago

(555.28-122.57*(4))-(585.34-136.71*(4))

mamaluj [8]

26.5 ..................................

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2 years ago

Read 2 more answers