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Mathematics 73 Online
goldieknight:

If the eccentricity of an ellipse is 0.43 and the length of its major axis is 11 units, How far from the center are the foci located?

Mercury:

eccentricity = c/a where 2a is the length of the major axis. solve for a. then plug eccentricity, and "a" into the eccentricity formula to find c, which will give you the distance of the foci

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