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consuelo iglesia

consuelo i.

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Question 4 Normally closed contacts associated with a momentary switch are â—» when the switch is â—» not affected; operated open; operated closed; operated open; not operated

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A study was conducted to determine if drinking a cup of tea before bedtime helped with falling asleep faster. After randomly assigning 50 people to one group that received tea before bedtime and 50 other people to a group that did not receive tea before bedtime, the researcher then compared the amount of time it took for each person to fall asleep. This is an example of ... A statistic An experiment A confounding variable An observational study Question 2

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In which situation does management integrity present the greatest amount of risk? Borrower repeatedly claims payments are made on time, when they are not. Payment history has been inconsistent because of erratic cash flow. Owners borrow funds from the business instead of taking dividend distributions.

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A nurse is reviewing a client's laboratory report. The client's ABG levels are pH 7.5, PaCO2 32 mmHg, and HCO3- 24 mEq/L. The nurse should determine that the client has which of the following acid-base imbalances? A. Respiratory alkalosis B. Metabolic acidosis C. Respiratory acidosis D. Metabolic alkalosis

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1. Rate of a certain substitution reaction was found to be higher in DMSO (dimethyl sulfoxide) than in water. Based on this, what can you conclude? Why? A. This is SN1 reaction, for which rate is higher in sulfur containing solvents. B. Since rate is higher in DMSO, which is a non-polar solvent, this must be a SN2 reaction. C. This is SN1 reaction because rate of SN1 is higher in polar aprotic solvents. D. This is SN2 reaction because rate of SN2 is lower in solvents that can form hydrogen bonds. E. Since no nucleophile is mentioned, this must be a SN1 reaction.

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T 12 X=(X?,X?)~N?(?,c); 2 Let 3 1 2 ?=\begin{bmatrix} 3\\5\end{bmatrix},c=\begin{bmatrix} 1 & 2\\1 & 4\end{bmatrix}. 5 1 4 Y=AX+b; Let 3 1 7 A=\begin{bmatrix} 3 & 1\\0 & 2\end{bmatrix},b=\begin{bmatrix} 7\\2\end{bmatrix}. 0 2 2 Then covariance matrix of Y is:

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A labor-intensive process has a fixed cost of $200 and a variable cost of $0.153 per unit. An automated process to produce the same product has a fixed cost of $600 and a variable cost of $0.065 per unit. A minimum of ____ units, rounded up to the nearest five (5), must be produced before the automated process is preferred (less costly) over the labor-intensive process. 4830 3980 4550 4265

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Ten years ago, George purchased a house for $200,000, with a 20% down payment and financed the rest for 30 years at a 0.4% per month interest rate with end-of-the-month payments. Today, George sold the house for $420,000. He must pay a Real Estate bill for 7% of the sale price to account for sales commission and other charges, and pay off the mortgage. How much cash is he left with after paying the bank and the Real Estate Bill?

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The temperature of a rigid (i.e., constant-volume), sealed container of gas increases from 100°C to 200°C. The gas pressure increases by a factor of 0.5 2 1.3 0.8 1 (the pressure doesn't change)

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1. (10 points) Calculate the improper integral if it converges, or show that it diverges.\\ $\int_1^\infty \frac{7}{(3x+1)^4} dx$\\ 2. (5 points) Consider the sequence defined by $a_0 = 0, a_1 = 1$ and\\ $a_{n+2} = 3a_n + 4a_{n+1}$\\ for $n \ge 0$.\\ (a) Is this sequence defined implicitly or explicitly? Explain your answer.\\ (b) Write down all of the terms in the sequence that are below 300.\\ 3. (10 points) Show all of your work in this problem. Consider the infinite series\\ $\sum_{k=2}^\infty \frac{k-1}{2k+1}$\\ (a) Write down the first three terms of this series.\\ (b) Find the first three terms in the sequence of partial sums of this series.\\ In parts (a) and (b), write your answers as reduced fractions.

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