Question

Please help me. This is the only question i need help on. Ill fan or Medal.

18. A diameter of a circle has endpoints P(–10, –2) and Q(4, 6).
Find the center of the circle.
Find the radius. If your answer is not an integer, express it in radical form.
Write an equation for the circle.
(3 points)

Answer 1

center is between P Q

Answer 2

I think there wanting actual points. For the center i got -3, -2 But i think that is wrong

Answer 3

O(xp+xq/2,yp+yq/2/)

Answer 4

your equation confuses me.

Answer 5

no it is (-3,2)

Answer 6

-10+4/2=-3
-2+6/2=2

Answer 7

Ohh okay that makes since now. What about the radius?

Answer 8

It asks for in in an integer or radical form, which confused me

Answer 9

PQ=sqrt[(xp-xo)2+(yp-yo)2]

Answer 10

would it be sqrt85?

Answer 11

R=PQ/2

Answer 12

PQ=sqrt(-10-4)2+(-2-6)2=sqrt(14^2+8^2)=sqrt(260)
R=sqrt(65)

Answer 13

approximate R=8.06

Answer 14

so it would be 65?

Answer 15

and is that in an interger or radical form? Sorry i know i seem like i dont get any of this. Ive had some things interfere with school this semester.

Answer 16

sqrt(65) yes

Answer 17

Thank you. what about the equation? I got (x +3)^2 + (y -2)^2

Answer 18

which would = 65

Answer 19

(x +3)^2 + (y -2)^2=65
yes

Answer 20

Thank you very much. I have 2 questions i couldnt figure out, do you have time to help me?

Answer 21

ok

Answer 22

write in new post

Answer 23

okay thanks i did