Numerade

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Which of the following statements is true of oligopoly models? If oligopoly firms compete with each other without colluding, they always end up with zero economic profit. Once formed, collusive agreements are generally easy to hold together. In oligopolies, less product differentiation generally results in greater economic profits. Some oligopoly models show how firms can compete with each other without collusion and still maintain positive economic profit in the long run.

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The density of water is 1.00gmL at 4\deg C. How many water molecules are present in 2.46mL of water at this temperature?Be sure your answer has the correct number of significant digits.

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4 Identity is a joint social production. This statement implies that identity is Multiple Choice a set of explicit interactions designed to produce societal norms. influenced by family, peers, and broader cultural concerns. a purposeful and conscious goal. rigid and governed purely by genetic factors.

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Answer: C) Beta

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4. (4 points) Consider the following function: $f(x) = \begin{cases} (-x+3)c & x < 0\\ (x+1)(x-3) & x \ge 0 \end{cases}$ If $f(x)$ is continuous on $(-\infty, \infty)$, determine the value for $c$ and justify your answer.

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In 2010, nonprofits accounted for how much percentage of all wages and salaries paid in the United States? a. $ 9.9 \% $ b. $ 9.4 \% $ c. $ 10.1 \% $ d. $ 9.2 \% $

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Problem 2 (40 Points) For the below plane stress configuration, determine: $\sigma_x$ = - 14 Mpa $\sigma_y$ = + 10 Mpa $\tau_{xy}$ = 5 Mpa cw 1. The principal stresses $\sigma_1$, and $\sigma_2$. 2. The principal plane orientations $\theta_{p1}$ and $\theta_{p2}$. Plot $\sigma_1$, and $\sigma_2$ along those angular orientations. 3. The maximum shear stress $\tau_{max}$ 4. The maximum shear plane orientation $\theta_{s1}$ and $\theta_{s2}$. Plot $\tau_{max}$ and $\sigma_{avg}$ along those angular orientations.

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1. Identify the elementary row operation that has been used to transform -1 210 into the row-equivalent matrix -1

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Question 1 Evaluate the integral $\int_{-5}^{5} x dx$. $\frac{25}{2}$ 100 0 25 Question 2 This is the graph of a function $f(x)$. What is the value

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Question 2 (20 marks) Consider the following state-space representation: $\begin{bmatrix} \dot{x}_1 \\ \dot{x}_2 \end{bmatrix} = \begin{bmatrix} -1 & 0 \\ -2 & 1 \end{bmatrix} \begin{bmatrix} x_1 \\ x_2 \end{bmatrix} + \begin{bmatrix} 1 \\ 1 \end{bmatrix} u, y = \begin{bmatrix} 1 & 0 \end{bmatrix} \begin{bmatrix} x_1 \\ x_2 \end{bmatrix} + u. (a) \text{ (10 marks) Given the transformation } x = Pz \text{ where } P = \begin{bmatrix} 2 & 0 \\ 2 & 1 \end{bmatrix}, \text{ calculate the transformed} \text{ state-space representation in terms of } z_1 \text{ and } z_2. (b) \text{ (10 marks) Is there an invertible transformation matrix such that the resulting representation} \text{ is controllable? Show your reason.}

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samantha o.