Question

(x - 5)2 + (y + 9)2 = 144

Which statement is true?

The circle is centered at (-5, -9) and has a diameter of 12.

The circle is centered at (5, -9) and has a radius of 12.

The circle is centered at (5, 9) and has a diameter of 12.

The circle is centered at (5, 9) and has a radius of 12.

Answer 1

The equation of a circle is

\[(x-h)^2+(y-k)^2=r^2\]

where (h,k) is centre and r is radius .Can you answer it now?

Answer 2

So would it be C?

Answer 3

nope?Try again

Answer 4

it will be the opposite of each number in the parenthese

Answer 5

D? The original is (x - 5)2 + (y + 9)2 = 144 so I thought maybe 12 was the diameter

Answer 6

nooo!

Answer 7

Okay then I'm confused

Answer 8

Its r^2 on right 144=12^2

12 is radius!!

Answer 9

opposite of -5 is 5
opposite of 9 is -9

Answer 10

Its r^2!!

Answer 11

So it is D

Answer 12

nope

Answer 13

(5, -9)

Answer 14

notice there is a difference here from general equation

Answer 15

B

Answer 16

Y'all both are confusing me lol

Answer 17

Its (x+9)=(x-(-9)

Hence center will be (5,-9) and radius 12

Answer 18

That will be B

Answer 19

Okay can you help me with one more?

Answer 20

Yes. Post it separately.