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elena calhoun

elena c.

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Three pipes are filling a tank. Normally, Pipe A can fill the tank in 5 hours, Pipe B can fill the tank in 6 hours, and Pipe C can fill the tank in 8 hours .

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integration of power z cos z with respect to unit circle

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QUESTION 1 You ARE required to show work for this question. Solve for the 2 \times 2 matrix $X$ in the equation $A + 2X = B$ where $A = \begin{bmatrix} 2 & 1 \ -1 & 4 \end{bmatrix}$ and $B = \begin{bmatrix} 1 & 2 \ 3 & 4 \end{bmatrix}$ Don't worry about inputting a matrix in its proper form. Just enter the values in each row in the blanks below. Row 1 of matrix $X$ Row 2 of matrix $X$

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How many grams of Fe(OH)3 are produced from 20.6 mL of a 1.65 M NH4OH solution? FeCl$_3$ + 3NH$_4$OH$\rightarrow$ Fe(OH)$_3$ + 3NH$_4$Cl

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Question 28 Which of the following have a two-term limit? San Diego Mayor and County Board of Supervisors Governor San Diego City Council members All of the above 1 pts

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2. Random variables X and Y have joint PDF (10 points) $f_{x,y}(x, y) = ce^{-(\frac{x^2}{8} + \frac{y^2}{18})}$ What is the constant c? Are X and Y independent?

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The brightness level Y of a pixel of a TV screen is 90% of the time described by a Gaussian random variable with mean 128 and variance 64. However, 5% of the time the pixel is defective and it is never on (always black), so that Y = 0. The remaining 5% of the time the pixel is always white, so Y = 255. For this mixed random variable 1. Give the mathematical form of the pdf $f_Y(y)$ using delta functions $\delta(.)$ and gaussian pdf. Sketch the pdf. 2. Give the mathematical form of the cdf $F_Y(y)$ using unit step function $u(.)$ and sketch the pdf. 3. What is the probability the pixel brightness $Y \ge 200$?

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In-class exercise: finding total and marginal product. • Suppose the production function is • $f(L, K) = LK + K$ • What is the marginal product of capital (in general)? Hint: $\frac{\partial xy}{\partial x} = y$ • What is the marginal product of capital when $(L, K) = (10, 10)$? • What is the total product when $(L, K) = (10, 10)$? • Answers: $MP_K = L + 1$, $MP_K(10, 10) = 10 + 1 = 11$, $f(10, 10) =$ $10 \times 10 + 10 = 110$

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Bank Credit Memo #PLCU-4433 Dated April 15, 2022 From Pet Lovers Credit Union, approval of \$5 000 bank loan at 6\% interest per annum. Amount deposited to CAD Chequing bank account.

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In short run equilibrium in a perfectly competitive industry whose firms are earning economic profits, a firm:

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