Numerade

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Hydrocarbon refrigerants _________________. A)are components of oil and natural gas that are found in natureB)have excellent thermo-physical, environmental, and thermodynamic propertiesC)are flammable at least under certain conditionsD)All of the above statements are true.

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A 1H NMR spectrum is shown for a molecule with the molecular formula of C$_8$H$_9$Br. Draw the structure that best fits this data. Incorrect, 1 attempt remaining

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Which of the following pairs represent isotopes? 125/53X and 127/53X, 32/16X and 32/15X, 28/14X and 31/15X, 56/26X, 56/25X. Justify your answer.

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Which of the following factors significantly determine the number of virtual machines that a host can accommodate? (Select two.) answer The VHD file you want to use. What has been allocated by the Hyper-V manager. The components installed on host machine. Installation of integration services (IS) on the virtual machine. The number of software applications installed on the host machine.

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In a lumberjack contest, one of the competitors stands on a log that is 50 cm in diameter and 3.0m long, causing it to be exactly half submerged below the water. The wood has a density of 700 kg/m^3. Determine the mass of the competitor.

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Cell division in both bacterial and eukaryotic cells produces genetically ____ cells.

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Texts: A contour map is shown for a function f on the square R = [0,6]⨯[0,6]. Assume a = 3, b = 6, c = 3, d = 6, e = 10, f = 0, g = 0, h = 10, i = 20, j = 30, k = 10, l = 20, m = 30. (a) Use the Midpoint Rule with m = n = 2 to estimate the value of the following. The value of the integral is ________. (b) Estimate the average value of f. (Round your answer to the nearest tenth.) fave = ________

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Felix and Sons purchased an asset for $28,000 on January 1, Year 1. The asset was expected to have a five-year life and a $4,000 salvage value. What is the amount of depreciation expense for Year 1 and Year 2, respectively using the double-declining- balance method? $9,600 Year 1 and $5,760 Year 2 $4,800 Year 1 and $4,800 Year 2 $11,200 Year 1 and $6,720 Year 2 $5,600 Year 1 and $5,600 Year 2

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The amount of time, in seconds, that a randomly chosen eight-week old baby smiles is distributed with a triangular distribution with parameter values (3, 9, 15), inclusive a Draw the probability density function (pdf) of the given distribution. (Please put numerical labels on the horizontal/vertical scale). b. What is the probability that a randomly chosen eight-week old baby smiles exactly 5 seconds?

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6. (10 pts) Is L regular? Either prove that it is not regular using pumping lemma, or describe an RE for it. The alphabet of the language is {0, 1, +, =}. L = { x = y + z | x, y, z are binary integers, and x is the sum of y and z }. For example, strings 1000 = 101 + 11, 0101 = 010 + 11, and 101 = 101 + 0 are in the language, but strings 100 = 101 + 10, 1 = 1 = 1, 1 + 1 = 10, and 1111 are not in the language.

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jennifer p.