Numerade

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Fixed cost includes overhead costs, salaries, etc. A) True B) False

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some diversification benefits can be achieved by combining securities in a portfolio as long as the correllation between the securities is

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Question 16 Approximately when is the age of viability? 5 months 9 months 3 months 6 months 2 pts

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Midtown delivery service delivers packages which cost $1.10 per package to deliver. The fixed cost to run the delivery truck is $364 per day. If the company charges $5.10 per package, how many packages must be delivered daily to make a profit of $40?

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1. Please find an example of a recent government action that was attempted to fight poverty. Explain the idea behind it, and how it is planning to help the poor. Do you think this will be successful? 2. Please find an example of a recent government action either blocking a merger or cracking down on anti-competitive behavior by a company. What does the government say the company was doing to be anti-competitive? How does the government's actions affect the firm in question? 3. Please find an example of a recent environmental regulation imposed by a government. Does this regulation fit under the command and control policy category or the incentive-based regulation type? Why do you think so?

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K When Ronald takes another economics class, other people in society benefit. The benefit to these other people O A. social B. private C, external D. Coasian E. extra ***

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If $F(x) = \int_{x^3}^{\sqrt{x}} \frac{t^4 + 3}{t^2 + \sin t} dt$, find $F'(x)$ A $F'(x) = \frac{x^2 + 3}{2\sqrt{x}(x + \sin(\sqrt{x}))} - \frac{3(x^{12} + 3)x^2}{x^6 + \sin(x^3)}$ B $F'(x) = \frac{x^2 + 3}{\sqrt{x}(x + \sin(\sqrt{x}))} - \frac{2(x^{12} + 3)x}{x^8 + \sin(x^2)}$ C None of the other choises D $F'(x) = \frac{x^2 + 3}{2\sqrt{x}(x + \sin(\sqrt{x}))} - \frac{2(x^4 + 3)x}{x^4 + \sin(x^4)}$ E $F'(x) = \frac{x^2 + 3}{\sqrt{x}(x + \sin(\sqrt{x}))} + \frac{2(x^{12} + 3)x}{x^5 + \sin(x^2)}$

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8. Modify the LU Factorization Algorithm so that it can be used to solve a linear system and then solve the following linear systems. a. $x_1 - x_2 = 2$, $2x_1 + 2x_2 + 3x_3 = -1$, $-x_1 + 3x_2 + 2x_3 = 4$. b. $\frac{1}{3}x_1 + \frac{1}{2}x_2 - \frac{1}{4}x_3 = 1$, $\frac{1}{5}x_1 + \frac{2}{3}x_2 + \frac{3}{8}x_3 = 2$, $\frac{2}{5}x_1 - \frac{2}{3}x_2 + \frac{5}{8}x_3 = -3$. c. $2x_1 + x_2 = 0$, $-x_1 + 3x_2 + 3x_3 = 5$, $2x_1 - 2x_2 + x_3 + 4x_4 = -2$, $-2x_1 + 2x_2 + 2x_3 + 5x_4 = 6$. d. $2.121x_1 - 3.460x_2 + 5.217x_4 = 1.909$, $5.193x_2 - 2.197x_3 + 4.206x_4 = 0$, $5.132x_1 + 1.414x_2 + 3.141x_3 = -2.101$, $-3.111x_1 - 1.732x_2 + 2.718x_3 + 5.212x_4 = 6.824$

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If a machine learns the least-squares line that best fits the data shown below, what will the machine pick for the value of y when x = 3? How closely does this match the data point at x = 3 fed into the machine? (1,4), (2,4), (3,5), (4,5) When x = 3, the machine will pick a value of for y. Choose the correct answer below, and, if necessary, fill in the answer box within your choice. A. This is away from the y-value fed into the machine for x = 3, which is reasonably close considering the range of y-values in the data set. B. This is away from the y-value fed into the machine for x = 3, which is too large to be expected for the best fit line. C. This is exactly the same as the data point fed into the machine.

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(a). Find the algebraic formula of avoiding round-off error to solve each of the following problems (b). Compute the numerical values. The result should be approxi-mated to 4 digits with rounding arithmetic. (1). [20 points] Find the roots of the quadratic equation $\frac{1}{3}x^2 - \frac{123}{4}x + \frac{1}{6} = 0$ (Hint: first observe b and $\sqrt{b^2 - 4ac}$) (Answer: $x_1 = \frac{-b + \sqrt{b^2 - 4ac}}{2a}$, $x_2 = \frac{c/a}{x_1}$; $x_1 = 92.24$, $x_2 = 5.421 \times 10^{-3}$) (2). [20 points] Compute $\ln(50 - \sqrt{2499})$ (Answer: $f(x) = \ln(x - \sqrt{x^2 - 1}) = -\ln(x + \sqrt{x^2 - 1})$; -4.605) (3). [20 points] Evaluate $\frac{e^{0.02} - e^{-0.02}}{0.03}$ (Hint: use the 1st few terms of the Maclaurin series representation of $e^x$ about $x = 0$, $e^x = 1 + x + \frac{x^2}{2} + \frac{x^3}{6} + ...$, and $f(x) = \frac{1}{x}(e^x - e^{-x})$; Take $x = 0.02$, and $0.03 = 3x/2$) (Answer: $\frac{1}{3}(2 + \frac{1}{2}x^2 + \frac{x^4}{60})$; 1.333)

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dylan b.