MATHEMATICS A PRACTICAL ODYSSEY W/ACCESS
8th Edition
ISBN: 9780357537343
Author: Johnson
Publisher: CENGAGE L
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Chapter 11.4, Problem 9E
To determine
To find:
The solution of the system of equations with elimination method.
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6. Researchers who have been studying the alarming rate at which the level of the Dead Sea has been dropping
have shown that the density d (x) (in g per cm³) of the Dead Sea brine during evaporation can be estimated by the
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d(x)=1.66 0.90x+0.47x²,
where x is the fraction of the remaining brine, 0≤x≤1.
a) Estimate the density of the brine when 60% of the brine remains.
b) Find and interpret the instantaneous rate of change of the density when 60% of the brine remains.
5. If g'(5) 10 and h'(5)=-4, find f'(5) for f(x)=4g(x)-2h(x)+3.
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a)
Dx 9x
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[97]
b) f'(3) if f(x) = x²-5x²
8
Chapter 11 Solutions
MATHEMATICS A PRACTICAL ODYSSEY W/ACCESS
Ch. 11.0A - In Exercises 1-10, a find the dimensions of the...Ch. 11.0A - Prob. 2ECh. 11.0A - Prob. 3ECh. 11.0A - Prob. 4ECh. 11.0A - Prob. 5ECh. 11.0A - Prob. 6ECh. 11.0A - Prob. 7ECh. 11.0A - Prob. 8ECh. 11.0A - Prob. 9ECh. 11.0A - In Exercises 1-10, a find the dimensions of the...
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