14. 2. 20188 351 zhlédnutíCourses on Khan Academy are always 100% free. Start practicing—and saving your progress—now: https://www.khanacademy.org/math/ap-statistics/xfb5d8e68:prepare...
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16. 11. 2013181 tis. zhlédnutíUploaded by popular demand. Shows how to use the slide rule to calculate squares, square roots, proportions and percentages.To help with the A/V Geeks missio...