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tino4ka555 [31]
3 years ago
10

A car is driving northwest at vv mph across a sloping plain whose height, in feet above sea level, at a point nn miles north and

ee miles east of a city is given by
Mathematics
1 answer:
solong [7]3 years ago
7 0
 <span>Northwest is 45 degrees north of west. If a car travels a distance x miles northwest, its northerly component gains x/sqrt(2) miles and its easterly component LOSES xsqrt(2)/ miles. 

Resultant height is h = 4500 + 100x/sqrt(2) - 75x/sqrt(2) = [25/sqrt(2)]x + 4500 
dh/dt = [25/sqrt(2)]dx/dt = [25/sqrt(2)]v </span>
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