pre cal

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if a 22 inch tire rotates 40 times per 2 minutes, determine the linear and angular speed of the tire.

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    assuming that Earth is a sphere of a radius 6378 kilometers, what is the difference in the latitudes of Lynchbug, Virginia, and Myrtle Beach, South Carolina, where Lynchbug is 400 kilometers due north of Myrtle Beach?

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