the center and the radius of ...?

1 ⤊

the center and the radius of ...?

http://i40.photobucket.com/albums/e215/xxs3xp1stolxx/Algebra%20II/502a/Picture3.png

2007-12-02 16:06:46 · 4 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics

4 answers

Compare
(x - a)² + (y - b)² = r²
Centre (a,b) and radius r

with

(x - 4)² + (y - 0)² = 16
Centre (4,0) and radius 4

OPTION a

2007-12-03 02:17:18 · answer #1 · answered by Como 7 · 1⤊ 0⤋

(x-4)^2 + y^2 = 16

radius = â16 = 4

center = (4,0)

BTW, the formula of a circle is (x-a)^2 + (y-b)^2 = r^2, where r is radius and the center is (a,b)

2007-12-02 16:14:15 · answer #2 · answered by Wits 2 · 0⤊ 0⤋

answer is c.
subtitute the (x,y) with center (0,4)
radius = 4 = square root of 16

2007-12-02 16:18:28 · answer #3 · answered by Anonymous · 0⤊ 0⤋

Answer is A

2007-12-02 16:11:46 · answer #4 · answered by smacka_velly 2 · 0⤊ 0⤋