Question Since the 3-Dimensional Matching Problem is NP-complete, it is natural to expect that the corresponding 4-Dimensional Matching Problem is at least as hard. Let us define 4-Dimensional Matching as follows. Given sets W, X, Y, and Z, each of size n, and a collection C of ordered 4- tuples of the form (wt, Xj, yk, zt), do there exist n 4-tuples from C so that no two have an element in common? Prove that 4-Dimensional Matching is NP-complete

Consider the following model: (1– B?)(1-B)2 = (1 – 0,B)(1-0,B12)aq with 0, = 2, 0, =.8and o=1 Express the model in terms of the AR form, Compute and plot the 7 weight 2 Compute and plot they weights that are needed to evaluate the forecast variance. 3 Fine the forecasts and their 95% forecast limits for the next 12 periods.

wheadon, dabis and singer formed a partnership with waradon contributing 60000, favis/nezto.mheducation.com/ext/map/index.html?con=contexternal browser=&launchUrl=https%253A%252F%252Fnewconnectmheducation contre Ch 12, 13, 14 sound Help Save & Exit Wheadon, Davis, and Singer formed a partnership with Wheadon contributing $60,000, Davis contributing $50,000 and Singer contributing $40,000 Their partnership agreement called for the income (loss) division to be based on the ratio of capital investments. If the partnership had income of $75,000 for its first year of operation, what amount of income rounded to the nearest thousand) would be credited to Singer's capital account? Multiple Choice $20.000 $25,000 $30,000 $40,000 $75,000 O H: 8 of 50 Prey Next > W 76 BI rch

import java.util.Collection; public interface MyList<E> extends Collection<E> { 7** Add a new element at the specified index in this list */ public void add(int index, E e): 1** Return the element from this list at the specified index */ public Eget(int index); /** Return the index of the first matching element in this list. Return -1 if no match. */ public int indexOf(Object e); /** Return the index of the last matching element in this list Return -1 if no match. "I public int lastIndexOf(E e); 3 3 /** Remove the element at the specified position in this list Shift any subsequent elements to the left. Return the element that was removed from the list. / public E remove(int index); 1 2 3 24 25 26 27 28 29 30 1. Replace the element at the specified position in this list with the specified element and returns the new set. */ public E set(int index, Ee): eOverride Add a new element at the end of this list * public default boolean add(E e) { add (size(), e): return true; ASSIGNMENT 2C Assignment 6 tests your knowledge of user-defined lists, stacks, queues, and priority queues (Chapter 24). You can and should start with the examples from the textbook/presentation and adapt them to the assignment at hand and use the appropriate names and add the additional code and requirements bellow. Design a program/project/driver class Your Name Assignment and the following classes (with exact names, replace Your Name with your actual first name or the name you go by): Class Description YourNameList Program the complete version of user-defined MyList class from Chapter 24 (meaning you need to add the code for all methods that were not coded in the textbook/presentation and have a "left as an exercise" comment). Add an additional YourNameToString method that returns a string with the elements from the list in the format: (Elementpositiono, ElementPostioni, .... Elementposition 1] YourNameArrayList Program a complete version of the user-defined MyArrayList class from Chapter 24 (all fields and methods) that uses the Your Namelist instead of MyList and has an tensiththaalam

4. Consider the determinant as a sum of signed products. Recall that there are \( n \) ! elementary products in the determinant expansion of an arbitrary \( n \times n \) matrix \( A \). (a) If \( A \) is a \( 5 \times 5 \) matrix, how many of the elementary products in \( \operatorname{det}(A) \) are guaranteed to be zero if the entry \( a_{12} \) is zero? (b) If \( A \) is an \( n \times n \) matrix, \( n \geq 2 \), how many of the elementary products in \( \operatorname{det}(A) \) are guaranteed to be zero if \( a_{12}=0 \) ? Give your answer in terms of \( n \). (c) If \( A \) is an \( n \times n \) matrix with \( \operatorname{det}(A) \neq 0 \), what is the maximum possible number of zero entries in A? Give your answer in terms of \( n \).

Drop down choices for both a. and b. -cost-push inflation -a change in inflation expectations -demand-pull inflation The Phillips Curve and Inflation - End of Chapter Problem For each scenario, determine whether inflation expectations, demand-pull inflation, or cost-push inflation will change. a. A rapid influx of foreign investment causes the output gap to become more positive. This gives rise to b. The president unexpectedly announces a tariff on aluminum and steel. This causes

CIRCLE ALL ANSWERS AND PROVIDE UNITS 1. (20 points) Mohr's Circle and Stress Elements Oy An element in plane stress (shown above) is subjected to stresses Ox - 70 MPa, Oy, and Txy - 50 MPa. Using the Mohr's Circle equations, determine the following: a principal stresses, b. the maximum shear stress, C. the principal angle, d. If one of the principal stresses is negative, what does a negative stress mean? **Using just proper equations is acceptable, but Extra Credit will be given if Mohr's Circle is drawn out.