Mastering WGU D420 – Discrete Math: Logic

Mastering WGU D420 – Discrete Math: Logic

Introduction

WGU D420 – Discrete Math: Logic covers logical reasoning for computer science. Looking for “WGU D420 tips,” “how to pass WGU D420,” or “WGU D420 Reddit”? This guide provides resources, strategies, and student insights to excel.

Course Description

D420 focuses on propositional and predicate logic, truth tables, and proof techniques, essential for algorithm design and CS theory. Students learn to construct logical arguments, preparing for advanced CS studies. See the WGU Computer Science Program Guide.

Useful Resources & Tips

Student-recommended resources:

  • WGU Materials: Use zyBooks for logic exercises.
  • Reddit (r/WGU): Find D420 tips in CS threads. Visit r/WGU.
  • Khan Academy: Review logic and proof techniques.
  • YouTube: Watch Trevor Miles for logic tutorials.
  • Studocu: Reference D420 study guides.
  • WGU Cohorts: Join for peer support.

Mode of Assessment

D420 is an Objective Assessment (OA), a multiple-choice exam on logic and proofs. No Performance Assessment (PA).

Common Challenges

Reported issues:

  • Understanding predicate logic.
  • Constructing formal proofs.
  • Memorizing truth table rules.
  • Preparing for OA question variety.

How to Pass Easily

Strategies for D420:

  1. Study zyBooks: Complete logic exercises.
  2. Practice Proofs: Solve problems on Brilliant.org.
  3. Review Logic: Use Khan Academy for clarity.
  4. Take Practice OAs: Use WGU pre-assessments.
  5. Join Cohorts: Engage for clarification.

Conclusion

WGU D420 – Discrete Math: Logic builds logical reasoning skills. With focused study, you’ll pass the OA easily. See WGU course guides for more.

Frequently Asked Questions

Is WGU D420 hard?

D420 is challenging for logic novices, but manageable with practice.

How long does WGU D420 take?

Typically 2–4 weeks, depending on logic background.

Is WGU D420 an OA or PA?

It’s an Objective Assessment (OA) with multiple-choice questions.

What are the key topics on the exam?

Propositional logic, predicate logic, truth tables, and proofs.

What’s the best way to study for WGU D420?

Use zyBooks, practice on Brilliant.org, review logic, and take practice OAs.

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Question 1

Please help me with this Quiz: Due by 11pm Mountain time. Question 1.1. (TCO D) Which of the following performance measures will decrease if there is an increase in the accounts receivable? Return on Investment Residual Income (A) Yes Yes (B) No Yes (C) Yes No (D) No No (Points : 5) Choice A Choice B Choice C Choice D Question 2.2. (TCO D) For which of the following decisions are opportunity costs relevant? The decision to make or buy a needed part The desision to keep or drop a product line (A) Yes Yes (B) Yes No (C) No Yes (D) No No (Points : 5) Choice A Choice B Choice C Choice D Question 3.3. (TCO D) For which of the following decisions are sunk costs relevant? (Points : 5) The decision to keep an old machine or buy a new one The decision to sell a product at the split-off point or after further processing The decision to accept or reject a special order offer All of the above None of the above 1. (TCO D) Data for December concerning Dinnocenzo Corporation's two major business segments-Fibers and Feedstocks-appear below: Sales revenues, Fibers $870,000 Sales revenues, Feedstocks $820,000 Variable expenses, Fibers $426,000 Variable expenses, Feedstocks $344,000 Traceable fixed expenses, Fibers $148,000 Traceable fixed expenses, Feedstocks S156,000 Common fixed expenses totaled $314,000 and were allocated as follows: $129,000 to the Fibers business segment and $185,000 to the Feedstocks business segment. Required: Prepare a segmented income statement in the contribution format for the company. Omit percentages; show only dollar amounts. (Points : 15) Question 2. 2. (TCO D) Ferro Wares is a division of a major corporation. The following data are for the latest year of operations. Sales $33,040,000 Net Operating Income $1,453,760 Average Operating Assets $8,000,000 The company's minimum required rate of return 18% Required: i. What is the division's ROI? ii. What is the division's residual income? (Points : 15) Question 3. 3. (TCO D) The management of Drummer Corporation is considering dropping product D84L. Data from the company's accounting system appear below. Sales $800,000 Variable Expenses $440,000 Fixed Manufacturing Expenses $248,000 Fixed Selling and Administrative Expenses $184,000 All fixed expenses of the company are fully allocated to products in the company's accounting system. Further investigation has revealed that $201,000 of the fixed manufacturing expenses and $156,000 of the fixed selling and administrative expenses are avoidable if product D84L is discontinued. Required: What would be the effect on the company's overall net operating income if product D84L were dropped? Should the product be dropped? Show your work! (Points : 15) Question 4. 4. (TCO D) Fouch Company makes 30,000 units per year of a part it uses in the products it manufactures. The unit product cost of this part is computed as follows. Direct Materials $15.70 Direct Labor $17.50 Variable Manufacturing Overhead $4.50 Fixed Manufacturing Overhead $14.60 Unit Product Cost $52.30 An outside supplier has offered to sell the company all of these parts it needs for $51.90 a unit. If the company accepts this offer, the facilities now being used to make the part could be used to make more units of a product that is in high demand. The additional contribution margin on this other product would be $219,000 per year. If the part were purchased from the outside supplier, all of the direct labor cost of the part would be avoided. However, $6.20 of the fixed manufacturing overhead cost being applied to the part would continue even if the part were purchased from the outside supplier. This fixed manufacturing overhead cost would be applied to the company's remaining products. Required: i. How much of the unit product cost of $52.30 is relevant in the decision of whether to make or buy the part? ii. What is the net total dollar advantage (disadvantage) of purchasing the part rather than making it? iii. What is the maximum amount the company should be willing to pay an outside supplier per unit for the part if the supplier commits to supplying all 30,000 units required each year? (Points : 15) Question 5. 5. (TCO D) Biello Co. manufactures and sells medals for winners of athletic and other events. Its manufacturing plant has the capacity to produce 15,000 medals each month; current monthly production is 14,250 medals. The company normally charges $115 per medal. Cost data for the current level of production are shown below. Variable Costs Direct Materials $969,000 Direct Labor $270,750 Selling and Administrative $270,075 Fixed Costs Manufacturing $370,550 Selling and Administrative $89,775 The company has just received a special one-time order for 600 medals at $102 each. For this particular order, no variable selling and administrative costs would be incurred. This order would also have no effect on fixed costs. Required: Should the company accept this special order? Why? (Points : 15)

Question 2

HELLO RACHEL P. AS REQUESTED I AM INCREASING THE PRICE TO $70 "The Article Critique assignment for this course is to investigate professional journals and locate four articles pertaining to Behavior in Organizations. You should locate one article for each of the following topics: 1. Group Dynamics 2. The use of power in an organization 3. Organizational culture 4. Job satisfaction You are to critique each of the four articles according to the instructions below: The format will be according to APA style (typed double-spaced) and in three parts. ? Part 1 of the critique is the identification of the article. What is important here is that you provide the reader with enough information about your article so he/she will be able to locate the article. ? Part 2 is a summary of the article. List the main points that the author has tried to establish, i.e., 1, 2, 3 or first, second, third. There normally will be 3 to 5 main points. ? Part 3 is your critique. You are to provide your reaction (insightful, critical, and logical) to the points that the author tried to make, or an overall critique of the entire article. A simple statement of agreement or disagreement is not sufficient. While you may make such a statement by way of introduction to your reaction, you must clearly and logically state the reasons for the post that you have taken. Length: There is no absolute minimum or maximum to the length of the article you read or the length of the paper you prepare, but the journal articles selected for critique should be professional in nature. Your resulting critique should be approximately 2-3 pages in length for each article (total project length will be approximately 8-10 pages). Compile all of your critiques in one document and include a properly formatted title and reference page.,Rachel P. Thank you for accepting.,Yes It is possible to use other sources other than journals. thank you. Let me know if there are any other concerns.,Thank you.

Question 3

Question One: A firm is considering to entry into a particular country for the first time. While the senior management thinks that there is great potential for expansion and profit in the country, they are concern with the risk and their own ability to function in that unfamiliar business environment. There are two options available to the firm. One is joint venture and the other wholly owned subsidiary. Which of the two choices do you recommend and why? In attempting to choose a country for investment, firm ABC decides, to use a matrix for country selection. It decides to look at the following factors: 1-economics 2-political risk, 3- cost of labor, 3- tax structure, and 4- country similarity to home country. On the scale of 1 to 10 (1 being very unattractive and 10 being very attractive) management has ranked each factor and has decided importance of each one (again 1 unimportant and 10 very important) for the company. Below is table showing management?s assessment. Company only chooses a location if its weighted average is 7 or higher. Would company ABC select country 1 or country 2? Ranking Country 1 Ranking Country 2 Weight Economic growth 8 6 9 Political Stability 4 8 7 Low Labor Cost 8 6 5 Attractive Tax structure 6 7 6 Similarity to home country 7 9 8 - Considering the Integration Responsiveness Strategy Grid, what is the recommended strategy for a firm with low pressure for national responsiveness and high pressure for global responsiveness, (explain your answer). Question Two: - How balance of payment deficit is dealt with and equilibrium is reached in case of fix and flexible exchange rate? - If the exchange rate between dollar and Euro is 1.30 $/Euro and inflation rate in US is 4% and Europe 3% forecast expected exchange rate in one year using relative purchasing power parity. - If the interest rate in the U.S. is 5% what should be the interest in Europe to discourage capital flow between the two countries? Question Three: - How can internationalization help a firm that has built its strategy on competing as a low cost/low price competitor in the industry. - Firm XYZ has identified a major opportunity in country A for business activity. However, it is concern that the opportunity may slip away if they do not respond to this opportunity. After evaluating various choices the two possibilities emerge as strategically attractive: acquiring a business in that country or building the business ground up (Greenfield development). Which one do you recommend and why? - In making foreign direct investment XYZ has to decide whether it raises capital from home or from the host country. If home country interest rate is 2% and host country interest 5%, and the host country exchange rate is expected to devaluate by 4%, should XYZ raise capital from home or from host country?

Question 4

1. (TCO 1) External users want answers to all of the following questions except which one? (Points: 4) Is the company earning satisfactory income? Will the company be able to pay its debts as they come due? Will the company be able to afford employee pay raises this year? How does the company compare in profitability with competitors? 2. (TCO 1) Which of the following is not a liability? (Points: 4) Unearned Revenue Accounts Payable Accounts Receivable Interest Payable 3. (TCO 1) If the retained earnings account decreases from the beginning of the year to the end of the year, then which of the following will occur? (Points: 4) net income is less than dividends there was a net income and no dividends additional investments are less than net losses net income is greater than dividends 4. (TCO 4) For 2010, Fielder Corporation reported net income of $30,000; net sales $400,000; and average shares outstanding of 6,000. There were no preferred stock dividends. What was the 2010 earnings per share? (Points: 4) $4.66 $0.20 $66.67 $5.00 5. (TCO 4) Kingery Corporation has current assets of $1,250,000 and current liabilities of $750,000. If they pay $250,000 of their accounts payable, what will their new current ratio be? (Points: 4) 2.0:1 1.7:1 2.5:1 1.25:1 6. (TCO 4) Suppose that Drake Corporation produced and sold 5,000 laptop computers during 2010. It reported $270,000 cash provided by operating activities. In order to maintain production at 5,200 laptops, Drake invested in $8,000 in equipment. Drake paid $2,000 in dividends. What is Drake?s free cash flow? (Points: 4) $262,000 $260,000 $268,000 $278,000 7. (TCO 2) If a company issues common stock for $25,000, and uses $20,000 of the cash to purchase a truck, which of the following will occur? (Points: 4) assets will be increased by $5,000 equity will be reduced by $25,000 assets will be increased by $25,000 assets will be unchanged 8. (TCO 2) At November 1, 2010, Myers Enterprises reported a cash balance of $60,000. During the month, Kern collected cash of $20,000 and made disbursements of $35,000. At September 31, 2010, what is the cash balance? (Points: 4) $80,000 debit $45,000 credit $45,000 debit $55,000 credit 9. (TCO 3) The custodian of a company asset should do which of the following? (Points: 4) have access to the accounting records for that asset be someone outside the company not have access to the accounting records for that asset be an accountant 10. (TCO 3) If a check correctly written and paid by the bank for $626 is incorrectly recorded on the company's books for $662, the appropriate treatment on the bank reconciliation would be to do which of the following? (Points: 4) add $36 to the book's balance subtract $36 from the book's balance deduct $36 from the bank's balance deduct $626 from the book's balance 11. (TCO 11) Utley Manufacturing Company reported the following year-end information: beginning work in process inventory, $180,000; cost of goods manufactured, $516,000; beginning finished goods inventory, $252,000; ending work in process inventory, $220,000; and ending finished goods inventory, $264,000. Utley Manufacturing Company's cost of goods sold for the year is which of the following? (Points: 4) $504,000 $528,000 $476,000 $252,000 12. (TCO 11) Brown Company has $30,000 of ending finished goods inventory as of December 31, 2008. If beginning finished goods inventory was $25,000 and cost of goods sold was $40,000, how much would Brown report for cost of goods manufactured? (Points: 4) $42,500 $25,000 $35,000 $45,000 13. (TCO 5) A variable cost is a cost that does which of the following? (Points: 4) varies per unit at every level of activity occurs at various times during the year varies in total in proportion to changes in the level of activity may or may not be incurred, depending on management's discretion 14. (TCO 5) Which of the following is not an underlying assumption of CVP analysis? (Points: 4) Changes in activity are the only factors that affect costs. Cost classifications are reasonably accurate. Beginning inventory is larger than ending inventory. Sales mix is constant. 15. (TCO 5) Madison Company?s variable costs are 25% of sales. Its selling price is $150 per unit. If Weed sells one unit more than break-even units, how much will profit increase? (Points: 4) $37.50 $112.50 $32.50 $380.00,Not all of these questions need to be answered as I am working through them already!,thank you! If these are done in a reasonable amount of time I have more that i would be willing to pay separately for!,May I know the progress? this is taking quite long :(

Question 5

Chapter 9 P9.2 Calculate this Problem in Excel Spreadsheet showing all the formulas and calculations used Listed below are data that pertain to the corporate bond market. (Note: Each ?period? below covers a span of 6 months.) Period 1 Period 2 Period 3 Period 4 Average yield on 10 high-grade Corporate 5.30% 5.70% 5.10% ?__ Bonds Yield on the Dow Jones average of 6.50% ? 6.00% 4.90% 40 Corporate bonds Yield spread (in basis points) ? 155 ? 25 Confidence index ____ _____ ____ ____ a. Compute the confidence index for each of the four periods listed above. b. Assume the latest confidence index (for period 0, in effect) amounts to 86.83%, while the yield spread between high- and average-grade corporate bonds is 85 basis points. Based on your calculations, what?s happening to bond yield spreads and the confidence index over the period of time covered in the problem (i.e., from period 0 through period 4)? c. Based on the confidence index measures you computed, what would be your overall assessment of the stock market? In which one or more of the periods (1 through 4) is the confidence index bullish? In which one(s) is it bearish? P9.4 Calculate this Problem in Excel Spreadsheet showing all the formulas and calculations used Below are figures representing the number of stocks making new highs and new lows for each month over a six month period: Month New Highs New Lows July 117 22 August 95 34 September 84 41 October 64 79 November 53 98 December 19 101 Would a technical analyst consider the trend to be bullish or bearish over this period? Explain. Calculate this in Excel Spreadsheet showing all the Formulas and Calculations.