You have new items in your feed. Click to view.
Q: A circle has equation x2+y2-8x+2y-1=0 what is the radius of this circle
A: A circle has equation x^2+y^2-8x+2y-1=0, the radius of this circle is 3 sqrt 2. x^2+y^2-8x+2y-1=0 x^2-8x+16+y^2+2y+1=1+16+1 (x-4)^2+(y+1)^2=18 The center of the circle is (4, -1) and the radius is sqrt 18 = 3 sqrt 2.
Original conversation
User: A circle has equation x2+y2-8x+2y-1=0 what is the radius of this circle

Weegy: I don't know!

Question
Updated 7/23/2014 3:15:01 AM
This conversation has been flagged as incorrect.
Flagged by yeswey [7/23/2014 3:14:52 AM], Edited by andrewpallarca [7/23/2014 3:22:57 AM]
Rating
3
A circle has equation x^2+y^2-8x+2y-1=0, the radius of this circle is 3 sqrt 2.
x^2+y^2-8x+2y-1=0
x^2-8x+16+y^2+2y+1=1+16+1
(x-4)^2+(y+1)^2=18
The center of the circle is (4, -1) and the radius is sqrt 18 = 3 sqrt 2.
Confirmed by andrewpallarca [7/23/2014 3:23:06 AM]

*
Get answers from Weegy and a team of really smart lives experts.
Popular Conversations
True or false? Stress has an effect on every system of the body.
Weegy: what is the question?
What's 3 * 4
Weegy: Synonyms for the word "say" which are bigger in length and in impact, are communicate, ...
S
L
Points 247 [Total 265] Ratings 0 Comments 177 Invitations 7 Offline
S
L
Points 130 [Total 130] Ratings 0 Comments 130 Invitations 0 Offline
S
L
R
Points 115 [Total 266] Ratings 1 Comments 5 Invitations 10 Offline
S
R
L
R
P
R
P
R
Points 66 [Total 734] Ratings 0 Comments 6 Invitations 6 Offline
S
1
L
L
P
R
P
L
P
P
R
P
R
P
R
P
P
Points 62 [Total 13329] Ratings 0 Comments 62 Invitations 0 Offline
S
L
1
R
Points 34 [Total 1450] Ratings 2 Comments 14 Invitations 0 Offline
S
L
Points 10 [Total 187] Ratings 0 Comments 0 Invitations 1 Offline
S
Points 10 [Total 13] Ratings 0 Comments 10 Invitations 0 Offline
S
Points 10 [Total 10] Ratings 0 Comments 0 Invitations 1 Offline
S
Points 2 [Total 2] Ratings 0 Comments 2 Invitations 0 Offline
* Excludes moderators and previous
winners (Include)
Home | Contact | Blog | About | Terms | Privacy | © Purple Inc.