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tony mitchell

tony m.

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What is the major organic product obtained from the following sequence of reactions? OH OCH3 1 2 $CH_3ONa$ $OCH_3$ OH OH $H_3C$ 4 2 1 3 3 4 $OCH_3$ $OCH_3$

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Question 38 A speaker should never round off complicated numbers, like statistics False True 3 pts

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Find a matrix \( A \) such that \[ \begin{array}{l} A\left[\begin{array}{l} 1 \\ 0 \\ 0 \end{array}\right]=\left[\begin{array}{c} 2 \\ 3 \\ -2 \end{array}\right], \quad A\left[\begin{array}{l} 0 \\ 1 \\ 0 \end{array}\right]=\left[\begin{array}{c} -5 \\ -5 \\ 4 \end{array}\right], \quad A\left[\begin{array}{l} 0 \\ 0 \\ 1 \end{array}\right]=\left[\begin{array}{c} 5 \\ -4 \\ -3 \end{array}\right] . \\ A=\left[\begin{array}{lll} \hline-50 & 0 & 0 \\ 0 & 60 & 0 \\ \hline 0 & 0 & 24 \end{array}\right] \end{array} \]

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Which of the following is NOT true of proteins:Group of answer choicesAll proteins are able to replicate themselves independently within the cell.The primary structure of a protein determines its unique three-dimensional shape.The amino acids that make up proteins have a range of different chemical properties, including hydrophobicity and hydrophilicity.Amino acids are joined by peptide bonds on a common backbone to form polypeptides

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(Show all workings; No MATLAB solutions) Consider the following system of linear equations: 4x_(2)+x_(3)=24 3x_(1)+0.5x_(2)-x_(3)=3 3x_(1)-x_(2)+6x_(3)=53 Solve the system of equations by the following methods: d. Gauss-Jordan method (using the augmented matrix A|I| ) (Show all workings;No MATLAB solutions) Consider the following system of linear equations: 4x2+x3=24 3x1+0.5x2-xz=3 3x1-x2+6x3=53 1: Perform the matrix multiplication [A] [A], where [A] is the coefficient matrix. 2. Solve the system of equations by the following methods: a. Crammer's Rule b. Gauss Elimination (with partial pivoting) c.LU factorization d. Gauss-Jordan method (using the augmented matrix [A |I ])

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In March 2020, Congress passed the CARES Act, which extended federal jobless benefits to independent contractors and other workers who had previously been considered ineligible for those benefits. This is an example of expanding unemployment insurance. Doing this not only helps individuals reduce hardships when they lose a job but it can also reduce the severity of a recession. However, it can also lead to the unintended consequence of reducing people’s incentive to look for work.

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(2 points) Which of the following sets are subspaces of \(\mathbb{R}^3\)? A. \(\{(-5x, 8x, 6x) \mid x \text{ arbitrary number} \}\) B. \(\{(x, y, z) \mid 2x - 9y = 0, -4x - 5z = 0\}\) C. \(\{(x, y, z) \mid x + y + z = 0\}\) D. \(\{(x, y, z) \mid x, y, z > 0\}\) E. \(\{(x, x - 2, x + 9) \mid x \text{ arbitrary number} \}\) F. \(\{(x, y, z) \mid x + y + z = 5\}\)

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Materials qua no effect (i.e., zero variance). Required: Shipping expenses, salaries, and commissions. Salem b. Direct laborers worked 61,000 hours at a rate of $16 per hour. Actually produced and sold 25,000 units and incurred the following costs. Established the following cost formulas for its selling expenses: Total standard variable cost per unit ahead; and its standard cost card per unit is as follows: <Prex *O wherever required. Indicate the effect of each variance by selecting "F" for favorable, "U" for unfavorable, and "None" for no effect. What is the materials quantity variance for March? Input the amount as a positive value. Leave no cells blank - be certain to enter. d. Total advertising, sales salaries and commissions, and shipping expenses were $267,000, $480,000, and $105,000 respectively. a. Purchased 180,000 pounds of raw materials at a cost of $7.50 per pound. All of this material was used in production. The static i. planning budget for March was based on producing and selling 20,000 units. However, during March the company sold 25,000 units. Fixed Cost $4.00 $160,000 $13.00 $260,000 per Unit Sold Fixed Cost $815. Fixed overhead was budgeted at $597,000. Fixed overhead is applied on the basis of direct labor-hours. The company also 3114 Prebie Company manufactures one product. Its variable manufacturing overhead is applied to production based on direct labor hours.

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d. A test of the response of one PSA sensor against various concentrations of PSA was performed and the result is shown in Figure 1 below. 90 Signal (Arbitary unit) 80 70 60 50 40 30 20 10 0 0 2 4 6 8 10 12 14 Concentration of PSA (ng/ml) Figure 1. Response of one PSA sensor. Based on the Figure 1: i. What is the Full-Scale Output (FSO) of the sensor? I [3 marks] ii. What is the detection limit of the sensor? Answer to the first decimal place. [3 marks] iii. What is the sensitivity of the sensor? iv. Critically evaluate the performance of the sensor based on Figure 1. Could it potentially be used to screen prostate cancer? Why (not)? [4 marks] [5 marks] Total [30 marks]

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Juan mows lawns in his neighborhood for extra money. Suppose the demand for lawn mowing in Joe's neighborhood is: $Q_D = 46 - 2P$ and that the supply of lawn mowing (Juan's willingness to mow lawns) is: $Q_S = -14 + P$. The market-clearing price of lawn mowing is $\boxed{}$ per lawn and the market-clearing quantity is $\boxed{}$ lawns. (Enter your responses rounded to two decimal places.)

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