Numerade

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Locate all critical points and classify them. f(x, y) = 4x³ - 12xy + 4y³ (0, 0) is a local maximum and (-1, -1) is a saddle point. (0, 0) is a saddle point and (1, 1) is a local minimum. (0, 0) is a local minimum and (1, 1) is a local maximum. (0, 0) is a saddle point and (-1, -1) is a local minimum.

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Part A A 0.830-mm-diameter silver wire carries a 40.0 mA current. What is the electric field in the wire? Express your answer with the appropriate units. ? View Available Hint(s) \begin{array}{c} \boxed{\mu A} \boxed{x} \boxed{x^{2}} \boxed{\frac{}{}} \boxed{\times 10^{n}} \boxed{\text{templates fraction}} \end{array} E = 0.001 \frac{N}{C} Submit Previous Answers Incorrect; Try Again; 4 attempts remaining Part B What is the electron drift speed in the wire? Express your answer with the appropriate units. ? View Available Hint(s) \begin{array}{c} \boxed{\mu A} \boxed{x} \boxed{x^{2}} \boxed{\frac{}{}} \boxed{\times 10^{n}} \boxed{?} \end{array} v_{d} = \text{Value} \quad \text{Units} Submit Provide Feedback

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A ski resort tracks the proportion of seasonal employees who are rehired each season. Rehiring a seasonal employee is beneficial in many ways, including lowering the costs incurred during the hiring process such as training costs. A random sample of 859 full-time and 385 part-time seasonal employees from 2009 showed that 457 full-time employees were rehired compared with 186 part-time employees. (a) Is there a significant difference in the proportion of rehires between the full-time and part-time seasonal employees? (Use $\alpha = 0.10$.) (a-1) Choose the appropriate hypotheses. Assume $\pi_f$ is the proportion of full-time employees and $\pi_p$ is the proportion of part-time employees. $H_0: \pi_f - \pi_p = 0$ vs. $H_1: \pi_f - \pi_p \ne 0$ $H_0: \pi_f - \pi_p \ge 0$ vs. $H_1: \pi_f - \pi_p < 0$ $H_0: \pi_f - \pi_p \le 0$ vs. $H_1: \pi_f - \pi_p > 0$ (a-2) Specify the decision rule. (A negative value should be indicated by a minus sign. Round your answers to 3 decimal places.) Reject the null hypothesis if $z_{calc} >$ 1.645 or $z_{calc} <$ -1.645 (a-3) Find the test statistic $z_{calc}$. (Round intermediate calculations to 4 decimal places. Round your answer to 3 decimal places.) $z_{calc}$ 1.019 (a-4) Make a decision. We do not reject the null hypothesis. (a-5) Make a decision. We cannot conclude that there is a significant difference in the proportion of rehires between the full-time and part-time seasonal employees. (b) Find the p-value. (Round your answer to 4 decimal places.) p-value 0.3082

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At a hospital nursing station, the following information is available about a patient: a) Condition: fair b) Height: 5'9" c) Date of admission: July 1, 2021 d) Blood type: A+ e) Name: Ricardo Johnson f) Temperature: 96.8°F

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1. Setup the following circuit in MultiSim. The voltage source is 1 volt peak. You need to calculate the cutoff frequency of the filter, and set the voltage source frequency to that value. V1 0.707 Vrms 1 Hz 0° Vin R1 1.5k? C1 0.1uF Vout Figure 1: Low-pass filter circuit used for MultiSim analysis 2. Add an oscilloscope to measure Vout and simulate the circuit. By measuring Vout we can determine the gain of the low-pass filter using the formula: $A_v = \frac{V_{out}}{V_{in}}$ The gain in dB is found as follows: $A_{v_{dB}} = 20 \cdot log_{10} A_v$ 3. Measure and record Vout. Calculate the voltage gain. It should be 0.707 (-3 dB) or very close to that, as the voltage source is being operated at the cutoff frequency. Measured Vout Av

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int f(int x, int y, int z) { if (/* missing code here */) return x; else return -x; } f: movl %edi, %eax movl %edi, %ecx negl %ecx cmpl %edx, %esi cmovge %ecx, %eax ret y < z x >= y y >= z x <= y

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Q1: (5 points) Observation from two random and independent samples, drawn from population 1 and 2, are given below Sample 1 33 61 20 19 40 Sample 2 26 36 65 25 35 Preliminary calculations show that: $\bar{x}_1 = 34.6$, $s_1 = 17.2$, $\bar{x}_2 = 37.4$, $s_2 = 16.2$. 1. Assume that the two populations are normal with equal variances. Use the pooled t-test for testing $H_0: \mu_1 = \mu_2$ vs. $H_1: \mu_1 \neq \mu_2$, where $\mu_1$ is the mean of population 1 and $\mu_2$ is the mean of population 2. Use $\alpha = 0.1$. (2 points) 2. Use the Wilcoxon rank sum test to determine whether or the two populations are the same or not. Use $\alpha = 0.1$. (3 points)

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Elegoo Mega 2560 If we change the "On" value in the Blink sketch (code or program) to 10,000, then the LED will be on for (report your answer to the hundredth place value, example: 23.00. Examples of wrong presentation of values are: 23, 23.0) in seconds.

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QUESTION 18 Which of the following is a barrier to trade? A. Embargoes. B. Tariffs. C. All of the above. D. Quotas. Wealth: A. Tends to be distributed much less equally than income. B. Is the market value of assets. C. All of the above. D. Represents a stock of potential purchasing power. Suppose Mr. Lee has total income of $120,000, has taxable income of $90,000, and pays $30,000 in taxes. Considering the information presented, what is Mr. Lee's effective tax rate? A. 66.7 percent. B. 25 percent. C. 72 percent. D. 33.33 percent. If the percentage of income paid in taxes increases as income rises, then the tax system is: A. Regressive. B. Progressive. C. Marginal. D. Nominal. If Alejandra makes $46,000 per year as a nurse and pays $7,000 in taxes while Emily makes $46,000 per year as a high school teacher and pays $6,500 in taxes, this is an example of: A. Horizontal inequity. B. Marginal inequity. C. A flat tax. D. Vertical inequity. 3.33 points QUESTION 26 Free trade results in reduced prices and increased consumption. True False If tax elasticity of supply is 0.8 and tax rates increase by 10 percent, the quantity of labor supplied would: A. Decrease by 1.25 percent. B. Decrease by 8 percent. C. Increase by 1.25 percent. D. Increase by 8 percent. By the year 2030 in the United States there will be ____ workers for every retired person. A. 8. B. 1. C. 4. D. 2.

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You need 210 mL of a 15% alcohol solution. On hand, you have a 70% alcohol mixture. How much of the 70% alcohol mixture and pure water will you need to obtain the desired solution?

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amanda h.