The formula p=14.7e^-0.21x gives the average atmospheric pressure p, in pounds per square inch, at an altitude x, in miles above sea level. Find the elevation of a jet if the atmospheric pressure outside the jet is 6.5 Ib/in^2. The elevation of the jet is approximently how much miles?
asked Jan 11 in Trigonometry Answers by anonymous

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1 Answer

Putting p=6.5 into the equation: 6.5=14.7e^-0.21x.

 

e^-0.21x=6.5/14.7;

taking natural logs: -0.21x=ln(6.5/14.7)=-0.8160 so x=3.89 miles approx.

answered Jan 11 by Rod Top Rated User (479,660 points)
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