Question

Can someone please check my work?? I will give a medal :)



A circle is centered at (7, 8) and has a radius of 11. Which of the following is the equation for this circle?

(x − 7)^2 + (y − 8)^2 = 121
(x − 7)^2 + (y − 8)^2 = 11
(x + 7)^2 + (y + 8)^2 = 121
(x + 7)^2 + (y + 8)^2 = 11

Answer 1

i think its the second one

Answer 2

The left part is correct. For the right side you have to square the radius

Answer 3

so.... it would be the first one then?

Answer 4

yes

Answer 5

okay, thanks! can you help me with another one?

Answer 6

ok

Answer 7

Quadrilateral OPQR is inscribed in circle N, as shown below. Which of the following could be used to calculate the measure of ∠QRO?

Circle N is shown with a quadrilateral OPQR inscribed inside it. Angle O is labeled x plus 16. Angle P is not labeled. Angle Q is labeled 6x minus 4. Angle R is labeled 2x plus 16.

m∠QPO + (x + 16)° + (6x − 4)° = 360°
m∠QPO = (x + 16)° + (6x − 4)°
m∠QPO + (2x + 16)° = 180°
m∠QPO = (6x − 4)° + (2x + 16)°

Answer 8

I'm not sure how to find this one though. do you need the picture of it or are you okay?

Answer 9

yeah i'm gonna need the pic

Answer 10

okay hold up

Answer 11

there you go :)

Answer 12

ok let me think on it for a second.

Answer 13

the third one is true. opposite angles in an inscribed quadrilateral are supplementary

Answer 14

that's the answer? how did you get it? can you help me understand? :)