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alexandra beltran

alexandra b.

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Consider a modified version of the Lotka-Volterra model: dN/dt = aN - 0.01NP - hN dP/dt = 0.002NP - 0.2P where N represents the size of the prey population and P represents the size of the predator population. The modification is that some of the prey are also harvested by humans, rather than being eaten by the non-human predator, at a rate of hN prey per year. When the number of prey harvested per year, hN, is set to 5, you observe the system remains in a steady state with P = 34 predators. The number of prey at this steady state is not directly observed. If all harvesting stopped, and all predators were eliminated, what would the per-capita rate of growth of the prey population be? Please answer with a precision of two decimal places (e.g., 0.25). The margin of error is +/- 0.05. Hint: Start by finding the equilibrium of the model in terms of the parameter values. Use that to calculate N at equilibrium. Use that to calculate h.

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An unknown metal, M, makes a precipitate with sulfate having the chemical formula M2SO4. At equilibrium, the concentration of the metal ion is 5.42e-4 M and the sulfate ion concentration is 2.71e-4 M. What is the Ksp of the metal sulfate? Ksp =

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Find the area of the surface generated be revolving the piece of the given function around the x - axis. First give the answer as an algebraic expression, then give a decimal approximation to the nearest 0.01. Show Work. y = 2\sqrt{x} on [4,9]

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In the male, secretion of testosterone is stimulated by which hormone? O a. follicle stimulating hormone O b. prolactin O c. calcitonin O d. luteinizing hormone O e. thyroxin

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Question 32 (1 point) In order for the simple money multiplier to work we assume that 1) banks loan all their excess reserves. 2) all loans a fully redeposited into the banking system. 3) there are no taxes in the economy. 4) all of the above. 5) Both 1 and 2.

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Recognizing whether a Turing machine loops forever is not Turing recognizable.

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When a given bond's price increases, we know that the interest rate on this bond:

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Write a MATLAB program to calculate numerically the radiating power distribution in the following question. Write a computer code to plot the normalized average radiating power density along a spatial line of x=0 and y=5 km. Eleven 1 m long dipoles are excited by the same 1 MHz current source with an amplitude of 15 A. The dipoles are aligned along the z-axis with their centers equally spaced at a distance of 2 m along the z-axis, namely, ξi=(0,0,id), where i=-5,-4,...,4,5 denoting the eleven dipoles, and d=2 m.

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Seth had been working as an investment banker for 15 year. His job required long hours and tons of travel, which meant that he had largely been absent as a husband and father. His children were now 3, 5, and 7 and he realized he was no longer willing to miss time with his children. Therefore, he decided he would take a job managing the local bank, which would mean less pay and less pressure, but it would offer him the flexibility he needs to spend more time with his family. This is called _______________. Question 30 options: eustress none of the above brownout spillover downshifting

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A piece of paper is 8(1)/(2) inches by 11 inches. What are its dimensions if 2(3)/(2) inches are cut from the width, and 3(3)/(8) inches from the length?

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