Answers about Hot Air Balloons > 자유게시판

Erwin Evangelista, of Quezon City, took home the Guiness' record for the "World's Longest Dribble". He dribbled for 45 hours, 10 minutes and 22 seconds. Nonstop
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If A hot air balloon begins at his decent at a rate of 12 feet per minute how long will it take for the balloons elevation to change by -315 ft?


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