A community for students.
Here's the question you clicked on:
 0 viewing
anonymous
 one year ago
What is the equation of the circle with center (2,5) that passes through the point (2,10)?
a. (x2)^2+(y(5))^2=25
b. (x(2))^2+(y10)^2=241
c. (x2)^2+(y(5))^2=241
d. (x(2))^2+(y10)^2=25
I'm not just asking for an answer. I don't understand and any form of help would be appreciated :)
anonymous
 one year ago
What is the equation of the circle with center (2,5) that passes through the point (2,10)? a. (x2)^2+(y(5))^2=25 b. (x(2))^2+(y10)^2=241 c. (x2)^2+(y(5))^2=241 d. (x(2))^2+(y10)^2=25 I'm not just asking for an answer. I don't understand and any form of help would be appreciated :)

This Question is Open

geerky42
 one year ago
Best ResponseYou've already chosen the best response.2Do you know about center part?

geerky42
 one year ago
Best ResponseYou've already chosen the best response.2Saying we have center \((h,k)\), then equation would be \((xh)^2+(yk)^2 = r^2\) Right?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I think that I might understand what you're getting at.. are you implying that the answer would be "a. (x2)^2+(y(5))^2=25" or would it be "c. (x2)^2+(y(5))^2=241" ...?

geerky42
 one year ago
Best ResponseYou've already chosen the best response.2Yeah, we are either at A or C, we don't know yet because we haven't figure out the radius part.

geerky42
 one year ago
Best ResponseYou've already chosen the best response.2\(r\) in \((xh)^2+(yk)^2 = r^2\) stands for radius. You can find radius by using distance formula on points \((2,5)\) and \((2,10)\)

geerky42
 one year ago
Best ResponseYou've already chosen the best response.2Distance formula is \[d = \sqrt{(x_2x_1)^2+(y_2y_1)^2}\]

Loser66
 one year ago
Best ResponseYou've already chosen the best response.1You can use directly the general equation of a circle to get r by replace the point into the formula dw:1432952523897:dw

geerky42
 one year ago
Best ResponseYou've already chosen the best response.2yeah, that's better way to figure out radius.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0(2,5)=x1 and y1 and (2,10)=x2 and y2 (2(2))^2+(10(5))^2 0=25 25 so, would the answer be "a. (x2)^2+(y(5))^2=25" ?

geerky42
 one year ago
Best ResponseYou've already chosen the best response.2\((x_2x_1)\) part is supposed to be 4. \((2)  2 = 4\), right? and \(y_2y_1\) is supposed to be 15, since 10  (5) = 10 + 5 = 15

geerky42
 one year ago
Best ResponseYou've already chosen the best response.2\((4)^2+(15)^2\), yeah.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I think so... I still get answer choice a as my answer each time I work this out.. is that correct or am I still totally lost?

geerky42
 one year ago
Best ResponseYou've already chosen the best response.2Let's just do @Loser66 's way. Plug \((2,10)\) into \((x2)^2+(y+5)^2\).

geerky42
 one year ago
Best ResponseYou've already chosen the best response.2And solve. What do you get?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.04^2+15^2 16+225 241 oh wow..... I see where I messed up! Thank you both so much for helping me and remaining patient :)
Ask your own question
Sign UpFind more explanations on OpenStudy
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.