I1. In 1970 the Department of Natural Resources released 1000 splake (a crossbreed offish) into a lake. In 1977 the population of splake in the lake was estimated to be 3000Using a Malthusian law for population growth, estimate the population of splake in thelake in 1980. What would the estimate be for the year 1991 using the Malthusian law

The Malthusian growth model is P(t) = P0ert, where P0 is the initial population.

Answered: 11. In 1970 the Department of Natural…

Advanced Engineering Mathematics

10th Edition

ISBN:9780470458365

Author:Erwin Kreyszig

Publisher:Erwin Kreyszig

Chapter2: Second-order Linear Odes

Section: Chapter Questions

Problem 1RQ

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5. Evaluate log, (81 27). log; ( 81 ý27) :) = log; ( 34 ( 37 = log3 33 = 3 %3D
| Discuss the term 'central mortality rate' and give the formula for its calculations. CS Scanned with CamScanner
Question 5 of 17 View Policies Show Attempt History Current Attempt in Progress < Your answer is incorrect. Give the growth rate that corresponds to the growth factor 8. The growth rate is i eTextbook and Media Hint ! %. Remember the relationship between growth rate (expressed as a decimal) and growth factor. Save for Later Last saved 1 second ago. Saved work will be auto-submitted on the due date. Auto- submission can take up to 10 minutes.
10. The population of the state of Utah was recently estimated to be 3.1 million. Using information from the last Census, an exponential model for the population of the state of Utah is: Q = 3.1 (1 + .017) a) Use the model to predict the population of Utah in 20 years. b) Currently, the developed water resources in Utah can supply up to 4 million people. Comment on the validity of the population model.
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Example 5. From the following data construct the index number for the year 2004 on the hasi. of 2003. Price (Rs.) Items Units (2003) Ро (2004) P, Wheat Quintal 200 250 Rice Quintal 300 400 Pulses Quintal 400 500 Milk Litre 3 Clothing Meter 3 5
3. The population of Anaheim was 417,939 in the year 2000. The population increased to 471,221 by the year 2010. Assuming that the population follows the exponential law, use your graphing calculator to find the exponential model the models Anahiem county's population, t, years after the year 2000. a) Write the exponential function found on your calculator. b) What year did the population reach 450,000? c) What is the population for 2015 according to your model? d) If the actual population of Spokane County in 2015 was 490,945, compare that value to the value you found in part C. e) What could cause the difference between the two values? www
If an account with an initial amount of $2000 earns 10% interest com- pounded continuously, how long does it take for the amount of money in the account to double? (A) 7.64 years (B) 6.93 years (C) 5.78 years (D) 9.44 years (E) 8.66 years You may use https://www.desmos.com/calculator to help with this question. (A) O(B) (C) (D)
Suppose that the time to failure (in hours) of fans in a personal computer can be modeled by an exponential distribution with A = 0.0003. • What proportion of the fans will last at most 10,000 hours? • What proportion of the fans will last at least 7000 hours? a. 0.0498, 0.8775 Ob. NONE Oc 0.0498, 0.1225 Od.0.0502, 0.1225
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