What is the value of y when x = 3, using the equation of a circle with radius r=5 and center (0,0)?
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What are the foci and eccentricity of an ellipse with major axis length 10 and minor axis length 6?
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What is the resultant vector when vector A, with magnitude 3 units, is added to vector B, with magnitude 5 units, and then vector C, with magnitude 2 units, is subtracted from the sum?