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Question 2 Max. score: 6.00 Ben is working on a new project and is trying to decide which design patterns to use. He has narrowed it down to three options: the abstract factory, builder, and prototype patterns. Which of the following is true about these patterns? Options 1. The abstract factory pattern is used to create objects, the builder pattern is used to compose objects, and the prototype pattern is used to communicate between objects. 2. The abstract factory pattern is used to create objects, the builder pattern is used to create objects, and the prototype pattern is used to create objects. 3. The abstract factory pattern is used to create objects, the builder pattern is used to compose objects, and the prototype pattern is used to create objects. 4. The abstract factory pattern is used to create objects, the builder pattern is used to compose objects, and the prototype pattern is used to communicate between objects. 1 2 3 4

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Classify each of the following organic reactions. reaction H2 Pd 1) BH3 \cdot THF 2) H2O2, NaOH 1) mCPBA 2) H3O+ OH OH OH type of reaction (check all that apply) halogenation dihdroxylation hydrohalogenation enolation addition hydration halogenation addition hydrohalogenation hydration dihydrination dihdroxylation hydrohalogenation halogenation dihdroxylation hydration oxyhydration addition dihdroxylation addition OH subtraction Cl2 H2O hydration CI halogenation hydrohalogenation

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8. If $\alpha \le 1$ and $x \ge 2$ prove that \begin{equation*} \sum_{n \le x} \frac{\phi(n)}{n^{\alpha}} = \frac{x^{2-\alpha}}{2 - \alpha \zeta(2)} + O(x^{1-\alpha} \log x). \end{equation*}

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If the instantaneous rate of change of g(x) at (-1, -2) is 1/2, write the equation of the line tangent to the graph of g(x) at x = -1. (Let x be the independent variable and y be the dependent variable.)

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Fluid flow through which of the following throttles the flow? a) partially opened valve b) orifice c) porous plug d) all of the mentioned

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Exercise 23-1 (Algo) Make or buy LO P1 Beto Company pays $3.90 per unit to buy a part for one of the products it manufactures. With excess capacity, the company is considering making the part. Making the part would cost $3.30 per unit for direct materials and $1.00 per unit for direct labor. The company normally applies overhead at the predetermined rate of 200% of direct labor cost. Incremental overhead to make the part would be 80% of direct labor cost. (a) Prepare a make or buy analysis of costs for this part. (Enter your answers rounded to 2 decimal places.) (b) Should Beto make or buy the part? (a) Make or Buy Analysis Direct materials Direct labor Overhead Cost to buy Cost per unit Cost difference (b) Company should: Make Buy

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Find the radius of convergence, R, of the series.\\ $\sum_{n=1}^{\infty} \frac{n}{b^n}(x - a)^n$, $b > 0$\\ R = 1\\ Find the interval, I, of convergence of the series. (Enter your answer using interval notation.)\\ I =

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1. With the aid of engineering examples, discuss the different forms in which energy can exist.

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118. If receivables are growing faster than sales, it may be an indication that the company is accomplishing sales growth by taking on increased credit risk. T OR F 119. Observation of inventory does not provide evidence for rights and obligations. T OR F 120. Nonstatistical sampling is most effective for larger populations. T OR F 121. Audit sampling in substantive tests is subject to both sampling risk and nonsampling risk. T OR F 122. Consistency involves a determination of whether the company's criteria for distinguishing between capital and revenue expenditures are the same as in the prior year. T OR F

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Program Lab27C will use an array of ArrayLists to simulate separate chaining in a hashing process.Write an int method that receives a string parameter. It should use the following hash function to calculate and return a hash value for the string: Look at the first letter of the string and set the hash value equal to the ordinal value for that letter (a = 1, b = 2,…z = 26). Covert the letter to lower case before doing this if needed. Add the length of the string to the hash value. In your main method Create an array of 36 ArrayLists. The ArrayLists will hold Strings. Read an unknown number of strings from a text file (Lab27C.txt) and call the above hash method for each string. (I will test your program with a different file.) Use the returned hash value as the index in the array and add the string to that array position’s ArrayList. Print the array of ArrayLists. You should print each array index first for each “bucket” and then print the items in that ArrayList all on the same line. (If the ArrayList for that index is empty, then print the index and empty[].) -------------------------------------------------------------------------------------------------------X LAB27C Text File False break for not None class from or True continue global pass yield def if raise and del import return as elif in try assert else is while async except lambda with await finally nonlocal

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