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Question

The atmospheric pressure P in pounds per square inch (psi) is given by
P = 14.7 e^−0.21 a
where a is the altitude above sea level (in miles). If a city has an atmospheric pressure of 12.17 psi, what is its altitude?
11 years ago

Answers

Reiny
you are solving

12.17 = 14.7 e^(-.21a)
.827891156 = e^(-.21a)
ln (.827891156) = -.21a lne
-.21a = -.188873...
a = appr .8994 miles or appr 4750 ft to the nearest ten feet.
11 years ago

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