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Veronika [31]
3 years ago
6

Hi i am in 3rd grade i need help.

Mathematics
2 answers:
wariber [46]3 years ago
7 0

Answer:

15

Step-by-step explanation:

20-5=15

Nikolay [14]3 years ago
4 0
20 apples
You eat 5
What is 20-5?
20-5= 15
15 is your answer sweetie
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The equation of a circle is x^2+y^2-2x +6y-6=0. Find the center and radius of the circle by completing the square.you must inclu
zavuch27 [327]

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Explanation:

Given the equation of circle;

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we want to re-write it in the form;

(x-h)^2+(y-k)^2=r^2

where;

\begin{gathered} (h,k)\text{ is the center of the circle} \\ r\text{ is the radius} \end{gathered}

Applying Completing the square method;

\begin{gathered} x^2+y^2-2x+6y-6=0 \\ x^2-2x+1+y^2+6y+9=6+1+9 \\ (x-1)^2+(y+3)^2=16 \\ (x-1)^2+(y+3)^2=4^2 \end{gathered}

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\begin{gathered} h=1 \\ k=-3 \\ r=4 \end{gathered}

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The radius of the circle is;

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6 0
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