Numerade

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QUESTION 1 1.1 Use matrices and elementary row operations to solve the following system: $5x - 3y + 2z = 13$ $2x - y - 3z = 1$ $4x - 2y + 4z = 12$ (8) 1.2 Let $A = \begin{bmatrix} -1 & x & -1 \\ x & -3 & 0 \\ -3 & 5 & -1 \end{bmatrix}$ (a) Find $|A|$, the determinant of A, by expanding by the second row. (6) (b) By using the answer obtained in (a) above, solve for x if $|A| = 0$. (3) [17]

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Monetary Policy: End of Chapter Problem a. The following diagram shows the economy growing at the potential growth rate with 10% inflation. Illustrate what happens if consumers and investors become more optimistic. Label the new growth rate on the x-axis with the point "High-AD real growth." Label the new inflation rate on the y-axis with the point "High-AD inflation." b. Once the central banker sees this rise in AD, they decide to fully reverse it with monetary policy. In the graph, illustrate what happens if they do their job "Just right" with the curve labeled AD"Just right". c. If they do their job "Just right," what will the inflation rate be? Provide an exact number. Inflation rate $(\pi)$ LRAS AD "Just right" SRAS $E(\pi)=10\%$ AD $M'+v'=13\%$ High-AD inflation High-AD real growth Real GDP growth rate

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0.9 kg of air initially at a pressure of 15 atm and a temperature of 523 K expands reversibly and isentropically to 1.5 atm. Find the final temperature and the work done.

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. The most common predictors of depression in older adults include all of the following EXCEPT: A. poor health. B. lack of disability. C. low social support. D. death of a spouse or other loss events.

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A well-diversified investor is subject to which type of risk? 1) None of these answers 2) Systemic risk 3) Total risk 4) Diversifiable risk 5) Company risk

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Classify each activity as being either a moderate- or vigorous-intensity activity. 1. walking briskly Vigorous-Intensity 2. water aerobics Moderate-Intensity 3. hiking uphill Moderate-Intensity 4. jumping rope Moderate-Intensity 5. bicycling 5 mph Moderate-Intensity 6. doubles tennis Moderats-Intensity

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Economic Event BBR entered into an operating lease to open a new store. The legal fees paid in cash to acquire the lease were $75. The present value of the future lease obligation is $2,200 excluding the initial payment of $275 paid in cash at the beginning of the lease. (Ignore any current portion of the lease obligation.) Record this economic event. Questions: Blank 1 - The current ratio was .992 before the economic event. What is the current ratio after this event? Blank 2 - How has solvency changed after this economic event? Is there an increase, decrease, or no effect on solvency? Blank 3 - The profit margin was 6.6% before this economic event. What is the profit margin immediately after this event?

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Find the solution set for the inequality.\$|6x - 2| + 7 \leq 1$ Select the correct choice below and fill in any answer boxes present in your choice. A. The solution set is \{x | \boxed{\text{}}\}. (Type an inequality or a compound inequality.) B. The solution is the set of all real numbers. C. The solution is the empty set.

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Example 4 An object is pulled up and inclined plane of angle $ \theta=50^{\circ} $. Coefficient of friction between object and plane is 0.4 . Calculate the acceleration of the object.

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Which of the following parents are MOST likely to foster flexible attitudes about gender in their children? a. Tom and Laura, who are a heterosexual cohabiting couple parenting one son and one daughter b. Tristram and Leona, who are a heterosexual married couple parenting two sons c. Tina and Lisa, who are a lesbian married couple parenting two daughters d. Theo and LeeAnn, who are a heterosexual and recently-engaged couple now that LeAnn is pregnant with their first child

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jeanne d.