SOLUTION: find the standard form of the equation of the ellipse with the following characteristics: foci: (=/-7,0) major axis of length is 20 please help with this problem

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Question 438136: find the standard form of the equation of the ellipse with the following characteristics:
foci: (=/-7,0) major axis of length is 20
please help with this problem

Answer by robertb(5830)   (Show Source): You can put this solution on YOUR website!
Foci are located along the x-axis. ==> semi-major axis = a = 20/2 = 10, and c = 7.
==>
==> The standard equation is

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