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Mathematics 16 Online
OpenStudy (anonymous):

help me please Does the equation x^2 - 10x + y^2 - 6y = -30 intersect the x-axis? A) Yes, because the center is a (5, 3) and the radius is 4. B) Yes, because the center is a (5, 3) and the radius is 2. C) Yes, because the center is a (-5, -3) and the radius is 2. D) No, because the circle is entirely in the first quadrant.

OpenStudy (anonymous):

@wolf1728 @welshfella

OpenStudy (anonymous):

do i use b/2a^2

OpenStudy (welshfella):

this is the equation of a circle you need to convert it to standard form by completing the square on the x and y terms

OpenStudy (anonymous):

ok will i use b/2a^2?

OpenStudy (welshfella):

not sure about that , to be honest

OpenStudy (anonymous):

oh ok . im actually gooing home in like 2 mins can you duplicate this tab and wait for me until i reach home please?

OpenStudy (welshfella):

if u convert to standard formyou can see what the radius and centre is

OpenStudy (welshfella):

yea ok

OpenStudy (anonymous):

ok im back sorry for the long wait ;)

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