This mathematician invented a calculator in the 1600's. a. Sonya Kovelevsky b. John Graunt E. James Sylvester . Blaise Pascal Pythagoras

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Q: Without using a calculator, evaluate the following expressions as shown.

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Q: Find the distance between the parallel planes 2x – 2y + z = 5 and 2x – 2y +z = 20.

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