Question 973402: 3. When Joe drives to school, he picks up his friend Dave. Dave lives directly south of Joe. Their school is directly east of Joe's house. Joe usually drives an average of 30 miles per hour. If Joe lives 12 miles from Dave, and Dave lives 20 miles from school, how much time would Joe save if he did not have to pick up his friend Dave?
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! When Joe drives to school, he picks up his friend Dave. Dave lives directly south of Joe. Their school is directly east of Joe's house. Joe usually drives an average of 30 miles per hour. If Joe lives 12 miles from Dave, and Dave lives 20 miles from school, how much time would Joe save if he did not have to pick up his friend Dave?
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Procedure::
Plot Joe at (0,0)
Plot Dave at (0,-12)
Plot the school at (20,-12)
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Find Joe's direct distance to school
Find the distance from Joe to Dave to school:: 12+20 = 32
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Subtract to get your answer.
Cheers,
Stan H.
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