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debra marquez

debra m.

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Let D = {16,19,21}, E = {16,18,19,20} and F = {15,17,18,19,21}. List the elements in the set (D U E) $$ \cap $$ F. (D U E) $$ \cap $$ F = { } (Use a comma to separate answers as needed. List the elements in order with no duplicates.)

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Task 2: Message Authentication Codes (MACs) – Practical Uses • Part 1: o Implement HMAC (Hash-based MAC) using the Python hmac module. o Hash a given message using a secret key. o Demonstrate how HMAC can detect message tampering by verifying the MAC for: § The original message. § An altered message. • Part 2:

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The following information relates to Bob's Bat Store for the year ended December 31, 2023. 2023 2022 Cash 200,000 170,000 Accounts Receivable 335,000 300,000 Inventory 200,000 100,000 Total Current Assets 735,000 570,000 Land 100,000 - Building and Fixtures 300,000 200,000 Less Accumulated Depreciation (47,000) (24,000) Total Assets 1,088,000 746,000 Accounts Payable 200,000 160,000 Taxes Payable 92,000 60,000 Total Current Liabilities 292,000 220,000 Common Stock 100,000 70,000 Capital in Excess of Par 500,000 316,000 Retained Earnings 196,000 140,000 Total Stockholders' Equity 796,000 526,000 Total Liabilities and Stockholders' Equity 1,088,000 746,000 2023 Sales Revenue 2,100,000 Cost of Goods Sold 1,560,000 Gross Profit 540,000 Depreciation Expense 23,000 Summary of Other Expenses 347,000 Earnings Before Taxes 170,000 Income Tax Expense 36,000 Net Income 134,000 Other information: a. The company purchased a building and fixtures with cash during the year, but none were sold. b. Dividends of $78,000 were declared and paid during the year. c. Cash proceeds from the sale of common stock during the year totaled $214,000. d. Land was purchased for $100,000 cash during the year. Required: Prepare the statement of cash flows for Bob's Bat Store for the year ended December 31, 2023 using the indirect method from operating activities for the statement of cash flows using the indirect method.

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In a common base transistor configuration, if $I_B = 0.25$ mA and $I_E = 1.4$ mA, then $I_C$ is: -1.65 -1.15 1.15 1.65

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Write the first four terms of the Maclaurin expansion of $f$ if $f(0) = 8$, $f'(0) = -3$, $f''(0) = 7$, $f'''(0) = -8$ (Express numbers in exact form. Use symbolic notation and fractions where needed.)

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Please research the Sarbanes-Oxley Act of 2002 and discuss in detail its effect on the public accounting profession, its implications, and major regulatory changes.

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2. The op amp in the circuit shown in Figure2 is ideal. Please calculate $v_o$ (30points) 16 k$\Omega$ 10 k$\Omega$ 5 k$\Omega$ 100 V + 10 V 8 k$\Omega$ 5V 2 k$\Omega$ Figure 2 -100 V $v_o$ 2 k$\Omega$

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Price and cost (dollars per month) 100 80 60 50 40 20 0 20 40 60 80 100 Quantity (thousands of customers connected) The figure above shows a firm's demand and marginal revenue curves and its cost curves. The darkened area in the figure above is the deadweight loss. firm's economic loss. consumer surplus. firm's total cost. firm's total revenue.

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The voltage and current of a non-linear load are given below; V(t)= 311 sin(314t) - 50cos(628t) i(t) = 23 sin(314t)+ 5+ 6sin(628t+30) + 8sin(942t - \phi) for \phi= 56 determine; a) RMS value of voltage b) RMS value of current c) Active power d) Reactive power e) Power factor

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4.) A manufacturer of quartz crystal watches has data that shows that their watches have an average life of 28 months before certain components start to deteriorate, causing the watch to malfunction. The lifetime of watches is approximately normal with a standard deviation of 6 months. If the company does not want to give refunds on more than 20% of their watches, how long should the warranty period be (to the nearest month)?

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