Numerade

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Create a quadratic inequality with the solution set (-∞, -2.5] U [1, ∞).

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Given the circuit below with the switch closed for a long time, then opening at t=0, and with the values R1 = 177KΩ, R2 = 132KΩ, R3 = 189KΩ, calculate the capacitor voltage at t=0. R1 R3 WWW WWWM + Uc 4 R2 1F Uc 40V

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If the price elasticity of demand for apples is greater than 1, an increase in apple prices will: Question 1 options: not affect total revenue. raise total revenue. either raise or lower total revenue, but it is impossible to determine which. lower total revenue.

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Among the well-researched, everyday chemicals we are exposed to, lead is the most problematic. According to your text, lead is associated with ________. Question 4 options: attention deficit blindness Parkinson's disease schizophrenia Both a and b

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Q1. (a) What is the main function of a DC chopper circuit? (b) A buck regulator is a (step-up / step-down) DC-to-DC converter that uses \dots \dots \dots as a power switch. (c) If the input voltage to a boost regulator is 15V and the duty cycle is 25% then the average output voltage $V_a$ is \dots \dots \dots (d) For an inverter, the three possible output AC voltage waveforms are: square wave, \dots \dots and (e) The square-wave output voltage of an inverter is acceptable for high-power applications (True or False)? Q2. For the single-phase half-bridge inverter that is shown in the figure below the load is resistive of a value R=2.5$\Omega$ (a) Calculate the RMS output voltage (b) Calculate the RMS output power (c) Sketch and \"label\" on the figure provided below the waveforms of $v_o$, $i_L$, and $v_{Q2}$

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Smart Touch Learning prepared the following budgets: Smart Touch Learning has decided to revise its budget to show fourth quarter sales of 700 tablets due to the expectation of increased holiday sales. First quarter sales for the following year are expected to be 700. The company desires to have an ending Finished Goods Inventory each quarter equal to 20% of the next quarter's sales. Read the requirements. Requirement 1a. Revise the sales budget. Smart Touch Learning Sales Budget For the Year Ended December 31, 2019 First Quarter Second Quarter Third Quarter Fourth Quarter Total Budgeted tablets to be sold Sales price per unit Total sales

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Use any method to solve the system: \begin{cases} 3x + 5y + z = 9 \ -x - 4y + z = 6 \ 2x - y - 2z = -3 \end{cases}

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You run a construction firm. You have just won a contract to build a government office complex. Building it will require an investment of $9.6 million today and $5.1 million in one year. The government will pay you $21.7 million in one year upon the building's completion. Suppose the interest rate is 10.4%. a. What is the NPV of this opportunity? b. How can your firm turn this NPV into cash today? a. What is the NPV of this opportunity? The NPV of the proposal is $ million. (Round to two decimal places.)

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Question 19 (8 points) ABC Company produces a chair that requires 5 yds. of material per unit. The standard price of one yard of material is $7.50. During the month, 8,500 chairs were manufactured, using 43,600 yards at a cost of $7.55 per yard. Determine the (a) price variance, (b) quantity variance, and (c) cost variance. Also indicate whether it's favorable or unfavorable. For the cost variance, work it out and show the actual and standard budget difference. (Show all work). Question 20 (6 points) XYZ Company produces lamps that require 2.25 standard hours per unit at an hourly rate of $15.00 per hour. If 7,700 units required 19,250 hours at an hourly rate of $14.90 per hour, what is the direct labor (a) rate variance, (b) time variance, and (c) cost variance? Also indicate whether it's favorable or unfavorable. (Show all your work).

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[Problem 4] (40 points) The causal system function is given by $H(z) = \frac{1}{1 - 0.2z^{-1}} + \frac{3}{z - 0.5}$ (a) When the input to this system is x[n] = cos(0.2?n)· u[n], obtain the steady-state and transient response to the casual system represented by (b) Draw the hardware realization of the system. (c) Obtain the impulse response g[n] such that it satisfies H(z)G(z) = 1. (d) Obtain h[n], and show that h[n] * g[n] = ?[n].

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emma j.