A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

anonymous

  • one year ago

given the center (h,k) and radius r=3, write an equation for the circle in standard form a) (x+5)^2+y^2=9 b) (x-5)^2+y^2=9 c) (x-5)^2+y^2=3

  • This Question is Closed
  1. SolomonZelman
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    The equation of a circle is: \(\large\color{black}{ \displaystyle (x-{\rm \color{red}{h}} )^2+ (y-{\rm \color{blue}{k}} )^2 = {\rm \color{green}{r}}^2 }\) Where 1) \(\large\color{black}{ \displaystyle({\rm \color{red}{h}} ,~{\rm \color{blue}{k}} )}\) is the \(\normalsize\color{red}{ \bf c\color{blue}{e}n\color{blue}{t}e\color{blue}{r} }\) of the circle. 2) \(\large\color{black}{ \displaystyle {\rm \color{green}{r}} }\) is the \(\normalsize\color{green}{ \bf radius }\) of the circle.

  2. SolomonZelman
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    this is the general form, and you don't even need to change the (h,k). All you need to do is to substitute 3 for \(\rm \color{green}{r}\).

  3. SolomonZelman
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    you have some typos in a question apparently....

  4. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    its B ? i forgot to put that (h,k)=(5,0)

  5. SolomonZelman
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    ok, h=5 k=0 r=3 then, yes, option B is correct. (x-5)²+y²=9

  6. SolomonZelman
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    questions?

  7. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    no thank you !

  8. SolomonZelman
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Alright! You are welcome; have a good luck!

  9. Not the answer you are looking for?
    Search for more explanations.

    • Attachments:

Ask your own question

Sign Up
Find more explanations on OpenStudy
Privacy Policy

Your question is ready. Sign up for free to start getting answers.

spraguer (Moderator)
5 → View Detailed Profile

is replying to Can someone tell me what button the professor is hitting...

23

  • Teamwork 19 Teammate
  • Problem Solving 19 Hero
  • You have blocked this person.
  • ✔ You're a fan Checking fan status...

Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.

This is the testimonial you wrote.
You haven't written a testimonial for Owlfred.