Find the greatest value of y in the equation a4 x2= (x2 + y2)3.

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Find the greatest value of y in the equation a4 x2= (x2 + y2)3.

A guest on horseback rides 300 li in a day. The guest leaves his clothes behind and the host rides off to catch up with the guest once he discovers the clothes. Assuming the host rides without stop tell how far he can go in a day?

Wanting to know the breadth of a river, I measured a base of 500 yards in a straight line close by one side of it.

Suppose that the propability of success in an experiment is 1/10. How many trials of the experiment are necessary to insure even odds on it happening at least once?

In baking a hemispherical loaf of bread of 10" radius, the crust was everywhere of an equal thickness, and the solidity of the crust was equal to half the solid content of the whole loaf. What were the dimensions of the interior soft part?

Having been given the lengths, a and b, of two straight lines drawn from the acute angles of a right triangle to the middle of the opposite sides, determine the length of those sides.

The author presents five modules based on mathematics from medieval Islamic cultures for use in a variety of high school and college mathematics courses.

This is an invited working conference as part of the ICMI Study Series.

A survey of the use of technology in American mathematics teaching over the past 200 years.