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Stormswan
 one year ago
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
Stormswan
 one year ago
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

This Question is Closed

Stormswan
 one year ago
Best ResponseYou've already chosen the best response.0i think its the second one

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0The left part is correct. For the right side you have to square the radius

Stormswan
 one year ago
Best ResponseYou've already chosen the best response.0so.... it would be the first one then?

Stormswan
 one year ago
Best ResponseYou've already chosen the best response.0okay, thanks! can you help me with another one?

Stormswan
 one year ago
Best ResponseYou've already chosen the best response.0Quadrilateral 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)°

Stormswan
 one year ago
Best ResponseYou've already chosen the best response.0I'm not sure how to find this one though. do you need the picture of it or are you okay?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0yeah i'm gonna need the pic

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0ok let me think on it for a second.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0the third one is true. opposite angles in an inscribed quadrilateral are supplementary

Stormswan
 one year ago
Best ResponseYou've already chosen the best response.0that's the answer? how did you get it? can you help me understand? :)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0dw:1437793000757:dw

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0P is <QPO and R is 2x+16, so QPO + 2x + 16 = 180

Stormswan
 one year ago
Best ResponseYou've already chosen the best response.0woah. okay, i think i get it!

Stormswan
 one year ago
Best ResponseYou've already chosen the best response.0i have two more questions... if that's okay?

Stormswan
 one year ago
Best ResponseYou've already chosen the best response.0Gina drew a circle with right triangle PRQ inscribed in it, as shown below: The figure shows a circle with points P, Q, and R on it forming an inscribed triangle. Side PQ is a chord through the center and angle R is a right angle. Arc QR measures 100 degrees. If the measure of arc QR is 100°, what is the measure of angle PQR?

Stormswan
 one year ago
Best ResponseYou've already chosen the best response.0do you need the pic?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Start by finding QPR, which is half the intercepted arc dw:1437793660355:dw

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0the arc is 100°. The angle is half of 100, what's that?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0then since the angles in a triangle add up to 180 we can find PQR dw:1437793992807:dw

Stormswan
 one year ago
Best ResponseYou've already chosen the best response.0so would i do 180  90  50 = 40??

Stormswan
 one year ago
Best ResponseYou've already chosen the best response.0so that is the answer? just... 40??

Stormswan
 one year ago
Best ResponseYou've already chosen the best response.0oh. awesome, okay.. last one :)

Stormswan
 one year ago
Best ResponseYou've already chosen the best response.0The figure below shows a triangle with vertices A and B on a circle and vertex C outside it. Side AC is tangent to the circle. Side BC is a secant intersecting the circle at point X: The figure shows a circle with points A and B on it and point C outside it. Side BC of triangle ABC intersects the circle at point X. A tangent to the circle at point A is drawn from point C. Arc AB measures 176 degrees and angle CBA measures 56 degrees. What is the measure of angle ACB?

Stormswan
 one year ago
Best ResponseYou've already chosen the best response.0@peachpi could you help with this last one? i gave you a medal!

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0dw:1437795151338:dw

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0yes, dw:1437795291949:dw

Stormswan
 one year ago
Best ResponseYou've already chosen the best response.0so i would have to do C= 176112/2 = 32?

Stormswan
 one year ago
Best ResponseYou've already chosen the best response.0okay, awesome! thnak you so much!!!
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