anonymous
  • anonymous
This circle is centered at the origin, and the length of its radius is 3. What is the equation of the circle? (Picture attached) A. x^2 +y^2=3^2 B. x^2 y^2 ____+____=1 3^2 3^2 C. x^2+y^2=4 D.(x-3)^2+(y-3)^2=16
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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anonymous
  • anonymous
1 Attachment
anonymous
  • anonymous
I'm thinking the answer is D.(x-3)^2+(y-3)^2=16? am i right ?
anonymous
  • anonymous
or A?

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More answers

darkprince14
  • darkprince14
Do you know the formula of a circle?
anonymous
  • anonymous
no i dont
darkprince14
  • darkprince14
This is the formula of a circle with center (h,k)... Plug in the coordinates of the center which is (0, 0) As well as r You'll get the answer...
darkprince14
  • darkprince14
(x-h)^2 + (y-k)^2 = r^2
darkprince14
  • darkprince14
sorry..my net connection is kinda crappy..
darkprince14
  • darkprince14
h = 0 k = 0 r = 3
anonymous
  • anonymous
i got a the first time and d the second
darkprince14
  • darkprince14
how'd you got d?
anonymous
  • anonymous
i multiplied the radious but i wasnt using the correct formula
anonymous
  • anonymous
so A is the answer! right?
darkprince14
  • darkprince14
yes... For circle's whose center is at the origin, you only have to plug in the length of the radius in the formula x^2 + y^2 = r^2

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