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Convergence articles

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Find two number with sum 20 and when squared their sum is 208.
If an equilateral triangle whose area is equal to 10,000 square feet be surrounded by a walk of uniform width, and equal to the area of the inscribed circle, what is the width of the walk?

A math history class visits the 'Beautiful Science' exhibit at the Huntington Library in Southern California.

Whimsical posters of fifteen mathematicians with brief biographies.
Determine the different values of x, when a certain function hits a minimum.
The beginnings of land measurement in the early United States and how this affected American democracy.
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Determine a number having remainders 2, 3, 2 when divided by 3, 5, 7 respectively.
Suppose a lighthouse is built on the top of a rock; the distance between a place of observation and that part of the rock level with the eye is 620 yds.
The author presents five modules based on mathematics from medieval Islamic cultures for use in a variety of high school and college mathematics courses.