Question

HELP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
The equation of a circle is shown below.

(x -5)2 + (y + 2)2 = 64

The radius of the circle is ________ units.
(No Multiple Choice)

Answer 1

@.Sam.
@andriod09
@Gin_Ichimaru
@ganeshie8
@Hunter15
@Creation
@aaronq
@lalokio

Answer 2

@hba
@Frostbite
@Hero
@lexi14
@phi
@Meriam

Answer 3

http://www.mathwarehouse.com/geometry/circle/equation-of-a-circle.php

Answer 4

But what's the answer!?

Answer 5

I'm confused!!!!!!!!!!!!

Answer 6

\[(x-h)^2+(y-k)^2=r^2\] is the equation of a circle with radius \(r\) and center \((h,k)\)

Answer 7

in your case \(r^2=64\)
what is \(r\) ?

Answer 8

And how do I translate that into the real equation?

Answer 9

I actuall don't know what R is. :/

Answer 10

\[(x-h)^2+(y-k)^2=r^2\\(x-5)^2+(y+2)^2=64\] look almost identical

Answer 11

okay, so it's 64. Right?

Answer 12

\(r^2\) is 64 but you are asked for the radius, which is \(r\)
what number would you square to get 64?

Answer 13

8?

Answer 14

yes

Answer 15

so that's the answer, right?
8?

Answer 16

hello? :(

Answer 17

yes

Answer 18

okay, thanks. :)

Answer 19

\(64=8^2\) so \(r=8\)
yw

Answer 20

thanks. :)

Answer 21

Wait guys, I have another question.
segment PR has an endpoint at (25, -5) and a midpoint of (18, -1). What is the value of the x-coordinate of the other endpoint?

Answer 22

@satellite73
@Loser66
@geoffb

Answer 23

(this one is also not multiple choice.)

Answer 24

post at a new post, friend