astockton
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The speed of a sound wave in the air is about 1,100 ft per second. How far does it travel in a quarter of a minute?
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Posted: 2013-01-28 16:25:00
The perimeter of an isosceles triangle is 84 meters. If the length of one of the congruent sides is 20 meters, how long is the base?
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Posted: 2013-01-28 16:39:00
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