Question 992337: Sally lives 3 miles due west of Jenny, and Jenny lives 4 miles due north of Dave. To the nearest mile, how far is it from Sally's to Dave's house?
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! Sally lives 3 miles due west of Jenny, and Jenny lives 4 miles due north of Dave. To the nearest mile, how far is it from Sally's to Dave's house?
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Draw the picture and you'll see that you have a right triangle.
Ans: Distance from Sally's to Dave's is the diagonal of
a triangle ith sides 3 and 4.
D = sqrt[3^2+4^2] = sqrt(25) = 5 miles
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Cheers,
Stan H.
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