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Convergence articles

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The cost per hour of running a certain steamboat is proportional to the cube of its velocity in still water. At what speed should it be run to make a trip up stream against a four-mile current most economically?
In one day, a person can make 30 arrows or fletch [put the feathers on] 20 arrows.
Find the two numbers such that multiplying one by the other makes 8 and the sum of their squares is 27
I found a stone but did not weigh it; after I added to it 1/7 of its weight and then 1/11 of this new weight, I weighed the total at 1 mina. What was the weight of the stone?
A sketch of the history of topology, beginning with the polyhedron formula, but continuing up to the present.
A certain merchant increases the value of his estate by 1/3...
The annual meeting of the NCTM contains numerous sessions dealing with the history of mathematics.
A set of n disjoint, congruent circles packs the surface of a sphere S so that each region of the surface exterior to the circles is bounded by arcs of three of the circles.
The first detailed biography of James Joseph Sylvester.
When knowing the sum of their ages along with another equation, determine how old a father and son are.