A community for students.
Here's the question you clicked on:
 0 viewing
anonymous
 one year ago
Algebra question?
anonymous
 one year ago
Algebra question?

This Question is Closed

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Decide whether or not the equation has a circle as its graph. If it does, give the center a\[x^2+y^26x+2y=9\]nd the radius. If it does not, describe the graph.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I know I need to rewrite into center radius form but i only get this far: \[(x^26x)+(y^2+2y)=9\]

nincompoop
 one year ago
Best ResponseYou've already chosen the best response.0what is the general form for circle?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0\[(xh)^2+(yk)^2=r^2\] ?

nincompoop
 one year ago
Best ResponseYou've already chosen the best response.0does yours look like that?

nincompoop
 one year ago
Best ResponseYou've already chosen the best response.0http://www.mathsisfun.com/algebra/circleequations.html there you have it

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0\[(x6)^2+(y2)^2=9^2\]

nincompoop
 one year ago
Best ResponseYou've already chosen the best response.0can you expand the left hand side?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0wait, it'd be x+6 right? not x6

nincompoop
 one year ago
Best ResponseYou've already chosen the best response.0you complete the squares

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0\[(x+6)^2+(y2)^2=9^2\]

nincompoop
 one year ago
Best ResponseYou've already chosen the best response.0look at the link I shared it shows you step by step using similar problem

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I am closing to finding the answer will you tell me if its right?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Ok, I got (3,1) and now cant figure out to how find the radius?

dehelloo
 one year ago
Best ResponseYou've already chosen the best response.0hmm https://www.youtube.com/watch?v=qh5hNY83UA4 is an accurate video that follows up the process

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0am I completely wrong? :/ I have trouble with longer problems. can anyone solve this exact problem so I can see where I went wrong?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Can anyone just give me answer at least? Trying to finish my homework up and this is my last problem left.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0@nincompoop @dehelloo

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Haha I don't know what happened!

Nnesha
 one year ago
Best ResponseYou've already chosen the best response.1\(\color{blue}{\text{Originally Posted by}}\) @rawrolivia \[(x+6)^2+(y2)^2=9^2\] \(\color{blue}{\text{End of Quote}}\) you didn't complete the square

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I'll show you what I did. Give me a moment to type it all

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0\[x^2+y^26x+2y=9 > (x^26x+9)+(y^2+2y+1)=9+9+1\] \[(x3)^2+(y+1)^2=1\] (3,1)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0...I think I got the answer but I'm unsure. Sorry I've been meaning to reply for awhile but uh.. I probably got it wrong but this is what I got from it: Center of the circle is: C = (6, 2) Radius of the circle is 9.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0...I think I got the answer but I'm unsure. Sorry I've been meaning to reply for awhile but uh.. I probably got it wrong but this is what I got from it: Center of the circle is: C = (6, 2) Radius of the circle is 9.

Nnesha
 one year ago
Best ResponseYou've already chosen the best response.1yes your work is correct remember to complete the square we should we should divide b by 2 and then add (b/2)^2 to the opposite side that's how u got +9 and 1 at right side 9+9+1= 1 so yes your work is correct good job!

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0ok but @peridot got a different answer :/

Nnesha
 one year ago
Best ResponseYou've already chosen the best response.1\[x^2+y^26x+2y=9 > (x^26x+\color{Red}{9})+(y^2+2y+1)=9+9+1\] how did you get 9 ? explain

Nnesha
 one year ago
Best ResponseYou've already chosen the best response.16=3 ? is there a typo ?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I thought you had to take half of the middle number, and then square it

Nnesha
 one year ago
Best ResponseYou've already chosen the best response.1oh yes so 6/2 = 3 6 isn't equal to 3 alright and yes (3)^2 =9 and like i said you should (b/2)^2 to the right side \[x^2+y^26x+2y=9 > (x^26x+\color{Red}{9})+(y^2+2y+1)=9+\color{ReD}{9}+1\]

Nnesha
 one year ago
Best ResponseYou've already chosen the best response.1and same thing with one you take half of the middle term 2/2 =1 and then take square add to the right side \[x^2+y^26x+2y=9 > (x^26x+\color{Red}{9})+(y^2+2y+1)=9+\color{ReD}{9}+\color{blue}{1}\] 9+9 +1 = 1 so if your work is correct then obviously your answer is correct

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0ok but I need to find out what the radius is now

Nnesha
 one year ago
Best ResponseYou've already chosen the best response.1\(\color{blue}{\text{Originally Posted by}}\) @rawrolivia \[(xh)^2+(yk)^2=r^2\] ? \(\color{blue}{\text{End of Quote}}\) general form of the circle write where r is the radius

Nnesha
 one year ago
Best ResponseYou've already chosen the best response.1now compare your equation with that general form what is the radius in that equation ?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0going to walmart, can i just please have answer? this is confusing me more than it should :(

Nnesha
 one year ago
Best ResponseYou've already chosen the best response.1\(\color{blue}{\text{Originally Posted by}}\) @rawrolivia So radius is 1? \(\color{blue}{\text{End of Quote}}\) yes right

Nnesha
 one year ago
Best ResponseYou've already chosen the best response.1you already know the answer..

Nnesha
 one year ago
Best ResponseYou've already chosen the best response.1\[(xh)^2+(yk)^2=r^2\] general form of the circle write where r is the radius and (h,k) is the center

nincompoop
 one year ago
Best ResponseYou've already chosen the best response.0I went to school to attend a session. Sorry. Let me know if you want to further learn or go over about circles.
Ask your own question
Sign UpFind more explanations on OpenStudy
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
 Engagement 19 Mad Hatter
 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.