Math question: In triangle ABC, angle A measures 40 degrees and its bisector divides side BC into segments of 6 cm and 8 cm. Find the length of side AC.
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What are the characteristics of the ellipse function? Explain its equation, foci, major and minor axes, eccentricity, and directrix.
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What is the speed in meters per second if a car travels a distance of 800 meters in 20 seconds?