SOLUTION: a model airplane flies 18feet in 2secounds what is the airplanes speed in miles per hour? round your anserw to the nearest tenth. can you please help me?

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Question 505827: a model airplane flies 18feet in 2secounds what is the airplanes speed in miles per hour? round your anserw to the nearest tenth. can you please help me?
Answer by Maths68(1474) About Me  (Show Source):
You can put this solution on YOUR website!
5080 feet = 1 miles
1 feet = 1/5080
1 feet = 0.00019685 miles
18 feet = 18*0.00019685 miles
18 feet=0.0035433 miles
1 hour = 60*60 = 3600 second
1/3600 hour = 1 second
1 second = 1/3600 hours
1 second = 0.000277778 hours
2 second = 2*0.000277778 hours
2 second = 0.000555556 hours
Speed = Distance / time
Speed = 18 feet / 2 seconds
Speed = 0.0035433 miles / 0.000555556 hours
Speed = 0.0035433/0.000555556 mph
Speed = 6.377934898 mph
Speed = 6.38 mph