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Mathematics 14 Online
OpenStudy (anonymous):

is the foci of this

OpenStudy (anonymous):

\[\frac{ x^2 }{ 36 } + \frac{ y^2 }{ 11 }= 1\]

OpenStudy (anonymous):

is the foci at (5,0) and (-5,0)

OpenStudy (phi):

this is an ellipse and the focus is at sqrt( a^2-b^2) = sqrt(36-11)= sqrt(25)= ±5 on the x-axis

OpenStudy (anonymous):

so then it is (sqrt11, 0) and (-sqrt11, 0)

OpenStudy (anonymous):

wait I think you confused me so does that mean I was right the first time with (5,0) and (-5,0)

OpenStudy (phi):

read the post more carefully. you got the correct answer the first time.

OpenStudy (anonymous):

yeah I thought I was wrong until I read it again thanks

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