one more and i promise ill give up for the night (;

Write the equation of a circle with center at (1, 2) and a diameter of 20.
A. x2 + (y – 2)2 = 100
B. (x - 1)2 - (y – 2)2 = 100
C. (x - 1)2 + (y – 2)2 = 100
D. (x - 1)2 + y2 = 100

Question

one more and i promise ill give up for the night (;

Write the equation of a circle with center at (1, 2) and a diameter of 20.
	A.	x2 + (y – 2)2 = 100
	B.	(x - 1)2 - (y – 2)2 = 100
	C.	(x - 1)2 + (y – 2)2 = 100
	D.	(x - 1)2 + y2 = 100

anonymous · Answer

center is (1, 2)

so we're looking for (x - 1)^2 + (y - 2)^ = r^2

radius is the half the diameter

r = 10 ====> r^2 = 100

so (x - 1)^2 + (y - 2)^ = 100

looks like C

primeralph · Answer

@robz8  on point.

anonymous · Answer

damn, i thought it was B. glad i asked. 
thanks for all your help man, i really appreciate it. sometimes ya gonna lend a brain, and im glad you were there for me. (:

primeralph · Answer

@chicagoblkhaks  you don't have to give up......keep them coming.

anonymous · Answer

its my bed time. ): guys. this little lady needs her beauty sleep. haha.

anonymous · Answer

... bruins...

primeralph · Answer

Okay then. Good night.

anonymous · Answer

hey now, im actually a wild fan. but my boys gave that up. ill root for your bruins though, id like to see them win to be honest!!

anonymous · Answer

that's funny... yet your name says blackhawks... :P