Digital ACT Math Practice Question #2069
Test your problem-solving accuracy on this official-caliber item. Select an answer choice to check your reasoning instantly.
c = sqrt(a^2 - b^2) = sqrt(100 - 64) = 6.
In an ellipse, focal distance c satisfies c^2 = a^2 - b^2 = 100 - 64 = 36. Thus c = sqrt(36) = 6....
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