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Databases Questions and Answers February 10, 2021

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6. Given the following graph, please do breadth first search: (20 pts) a) using node A as root node. (10 pts) b) using node K as root node. (10 pts) A B H G
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Run the codes below and give a brief discussion of the results: A) import pandas as pd import numpy as np from sklearn.cluster import AgglomerativeClustering import matplotlib.pyplot as plt # Load dataset url = "https://archive.ics.uci.edu/ml/machine-learning-databases/breast-cancer-wisconsin/wdbc.data" df = pd.read_csv(url, header=None) # Extract

In this assignment, you will be learning Scheme through the use of Dr. Racket. We would like to start with some basic concepts; trying to under prefix notation and the use procedure in Scheme. You will also implement nested procedures and recursive procedures. You may only use the procedures shown in the text and slides not any of the additional
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What cell reference should you enter if you want to create a formula that refers to cell A3 on the Expenses worksheet? A. Expenses A3 B. ExplA3 C. ExpensesA3 D. Expenses Which of the following images displays the correct sheet tabs after you have copied the Q1 Revenue sheet? Q2 Revenue Q1 Revenue A. Q1 Revenue (2)Q1 Revenue B. Copy of Q1 Revenue
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Consider the following scenarios. Which of them would be most appropriate for implementing with an immutable class? An object that represents a permanent legal document ( e . g . , title, content, parties ) . An object that represents an ongoing research log for the investigation into an anomalous object ( e . g . , ID number, description,
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1. [20pt] Solve the floating-point arithmetic problems. You need to have the results rounded to 4 binary digit to the right of the binary point in the normalized form. a. Calculate the sum of 1.0011 x 2-1 + (-1.1010 x 24) b. Calculate the product of 1.0011 x 2 + x - 1.1010 x 2)
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The BeneCO database consists of 4 tables EMPLOYEE, BENEFIT, JOB, PLAN that reflect the following relationships: An EMPLOYEE has only one JOB _ CODE, but a JOB _ CODE can be held by many EMPLOYEEs. An EMPLOYEE can participate in many PLANs, and any PLAN can be assigned to many EMPLOYEEs. Note also that the M:N relationship has been broken down into

Which of the following is/are true about ROI (multiple answers likely): ROI is the following ratio: NPV(Estimated benefits/estimated costs) ROI considers the time value of money A typical ROI decision rule is the ratio must exceed 2:1 ROI is the ratio: Estimated costs/ estimated benefits ROI is usually estimated over a 3-5 year period A typical
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Please help using R to answer this question: A person would like to reproducibly simulate 9 9 9 rolls of a fair six - sided die. He performs the following command. rolls < - replicate ( n = 9 9 9 , { set.seed ( 1 0 0 0 ) sample ( 6 , 1 ) } ) What is the problem with this command? In your answer, you should first explain, and then secondly rewrite

the number 182 is wrong raght number is only 82. ...thanks alot Q2. Using the unsigned multiplication algorithm, show the multiplication of: 1. Multiplicand = 6 by Multiplier = 14 1 The expected result of the multiplication should be 182. Four iterations are required because there are 4 bits in the multiplier. Show the steps. 2. 1101 x 1011
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ii . A testing that tests a small component, such as a module, a method, or a class in isolation to make sure that it works correctly before it is integrated into the larger system is referred to as: a . Unit testingb.System testingc.Integration testingd.Performance testing

1. Click the down arrow next to Transmit Power. Click the down arrow again to close the drop down list without making any changes. Why would you want to reduce the power of the AP? Click the down arrow again to close the drop-down list without making any changes. 2. Notice that, by default, the Beacon Period is set to 100 msec. What would happen
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*Answer Quick within 25mins thanks* What command will find the numerical equivalent of the character p? single('p) All of these answers double('p') int32(p) int('')
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1. Consider the following Python function. How could you rewrite this function in just one line using infinite lists in Haskell? def makeTupleList(ls): mylist = [] counter = 1 for x in ls: mylist.append((counter, x)) counter += 1 return mylist 2. How would you rewrite this Python code in Haskell, such that the looping condition and the body of the

Which one is NOT contained in process control block ( PCB ) ? Group of answer choices process state CPU registers I / O status information scheduling information interrupt service ID

3. 17 points) Evaluate the following logical expression, WITHOUT using your compiler, by reducing expressions one bit at a time and writing out all work (as we did in class). 1 not ('a' > 'B' and ( 1 > 2 or 10
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Problem 4 : Given the relation R ( A , B , C , D ) with FDs A B and B C D , if we projected attributes A , B , C , i . e . R 1 : = A , B , C ( R ) What is the minimal basis, T for our new relation R 1 ? a . Compute the closure table for R 1 b . Identify all non - trivial FDs that follow from R 1 given the FDs from relation R . c . Find the minimal
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Implement the c standard function strcat in MIPS/SPIM assembly language with the following requirements. The code must work on QTspim. Use $a0 through $a3 as necessary for the standard C library's arguments to each function. IMPORTANT Return in $v0. IMPORTANT Do *not* write a main program. You will be given a testing program. Don't worry about

Please answer with python program nouiu nuil l loup at calls the is prime function. 19. Future Value Suppose y monthl number of months. The formula is as follows: ou have a certain amount of money in a savings account that earns compound ly interest, and you want to calculate the amount that you will have after a specific The terms in the formula
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Compare a 3-stage pipeline computer with a 5-stage one. The 3-stage pipeline is better since it takes 3 cycles to complete a job while its counterpart takes 5 cycles. [] True [] False
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Assume that x5 holds the value 128. a. For the instruction add x30, x5, x6, what is the range(s) of values for x6 that would result in overflow? b. For the instruction sub x30, x5, x6, what is the range(s) of values for x6 that would result in overflow? c. For the instruction sub x30, x6, x5, what is the range(s) of values for x6 that would result

a If a bubble sort is used to arrange the numbers 7 5 3 9 2 6 in ascending order, what order will the data be in after the first pass? If a selection sort is used to arrange the numbers 7 5 3 9 2 6 in ascending order, what order will the data be in after the first pass? 5 3 7 2 6 9 2 5 3 9 7 6 2 3 5 6 7 9 5 7 3 9 2 6 none of the above 2 5 3 9 7 6

AutoSave 5 * C Friction ( Online ) - 0 9 3 0 2 2 2 Insert Draw Design Tell me Comments Editing v B I U v v ab x 2 , x 2 , AvvBvvAvv Paragraph Styles Dictate Editor Coefficient of static friction, s = 0 . 3 4 \ table [ [ \ table [ [ Trial ] , [ #
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1 0 3 1 point A recursive method must have which of the following? a control variable initialized to a starting value some way to control the number of time it repeats All of these a statement that increments the control variable Clear my selection
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Matlab Coding problems: Hw3_ 2 Given f(x)-x3- 5x10 and g(x) 4sin(3x) +6 Graph these two functions (using different colors for the lines) such that all intersection points are shown. Solve for the intersection points and plot them on the graph with black stars. Use fzero
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an izod impact test was performed on 2 0 specimens of pvc pipe

Answer using C++ please. The builders.cpp (a file I provide) runs the main loop for the program. This main loop repeatedly goes through two phases: dispatch and work. During the dispatch phase, the main loop reads building requests from a datafile and sends those requests to the appropriate builder. The dispatch phase only sends a limited number
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Question 10 Which of the following expressions is an invalid (incorrect) C condition: o ((p/q) == 50) o ((p/q) != 50) o ((p/q)k 50) o (p/9) >= 50) Moving to another
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Question 14 1 pts How do references relate to pointers? O a reference to a variable is another name for exactly the same variable in memory O a reference to an object is just like a pointer to that object O references are more dangerous than pointers, and should be avoided references are used only in C. C++ programmers prefer pointers Question 15
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On the following code that contains a method which returns a new matrix (2-d array) with same number of rows and columns as has its parameter (matrix). Each entry in the returned array should equal the result of multiplying the entry at the same row and column in matrix by the value of scalar. code: package edu.buffalo.cse116; /** * Class which

Team id 11 12 20 21 name hornets lions eagles sharks points 7 4 1 1 Venue id name 1 Nottingham 2 Leicester 6 Nottingham 7 Sheffield VONA Match id teamID venueID 1 opponentID teamPoints 12 3 1 11 2 2 12 20 1 3 6 20 11 0 4 4 7 12 21 3 5 LO 2 21 11 1 Write a SQL command to display for all teams (in table Team) the team's name, the team's points and
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python 6. Consider the strings created by these assignment statements: (20 points) horton = "A person's a person, no matter how small." vowels = "aeiouAEIOU" Write a for loop that prints out all the vowels in horton in the order they appear in horton
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Use algebraic manipulation to find the minimum sum - of - products expression for the function f = x 1 x 3 + x 1 x 2 + x 1 x 2 x 3 + x 1 x 2 x 3 .
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class Points ( object ) : def _ _ init _ _ ( self , x , y ) : self.x = x self.y = y def print _ point ( self ) : print ( ' x = ' , self.x , ' y = ' , self.y ) p 1 = Points ( 1 , 2 ) p 1 . print _ point ( )

In this program, you will add two user entered heights in feet'inches" format ( eg: 5 ' 1 0 ' ' ) and print the sum of the two heights in the feet'inches" format as well as in centimeters. Write your C + + program called Lab 3 C . cpp that does the following: Prompt for and read in first height using printf and scanf appropriately. Use integer
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A A checker is an object that examines strings and accepts those strings that meet a particular public In this question, you will write two classes that extend the Checker class. You will then create a Checker object that checks for a particular acceptance criterion. ( a ) A substringChecker accepts any String that contains a particular substring.
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Question 5 2 pts Relaxed, colloquial ( that is , conversational ) language CAN often enliven academic writing and even enhance its rigor and precision. True False
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What are the possible reasons for a low datarate between a laptop and a Wi - Fi access point ( AP ) ?

Python I have started walking to home at 7:30 AM for the first mile at slow step (8 min:15 sec per mile), then 3 miles at speed (7 min: 12 sec per mile), what time do I get home for breakfast? (format output in hh: min)
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The expression a = = b will result in Blank Space. The expression a = = b will result in Blank Space. A syntax error as the = = operator is not recognized by C + + . The variable a being set equal to the value of b . A value of true if a is equal to b or false. None of these answers are correct.

Whitch statement is true? Select one: A linked list can only have integers in its nodes. The maximum number of nodes that a linked list can contain is specified when that linked list is first created. A linked list can physically grow as long as there is memory, but doesn't really shrink as the released nodes remain available for the list. A
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Choose the right answer. The Mergesort procedure is explained in Section. 5.1. (You may want to read that section before attempting this question) Let say that I have chosen to represent the Merge procedure as stated below. Here, p and r are the starting and the ending indices, respectively, of the region of the array A that needs to be sorted in
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Write a cpp program Server.h #ifndef SERVER_H #define SERVER_H #include #include #include #include using namespace std; class Server { public: Server(); Server(string, int); ~Server(); string getPiece(int); private: string *ascii; mutex access; }; #endif
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ANSWER ALL IN PYTHON, SEND CODE AND SCREENSHOT OF OUTPUT
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For problem 3 set L=1 and x=1. please help me write marco in Excel VBA. thx. The equation t = (-1)^n - 1/2n + 1 cos ((2n + 1) pi x/L) is zero for even values of n. Use an if-else structure to compute this equation which sets t = 0 for even n and makes the correct computation for odd values of n. Set x and L equal to 1. (x = 1 and L=1) Write a
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QI / Choose the correct answer. 1. The --------- is installed after the completion of the well and is used to control the flow of oil and gas a BOP b-conductor pipe c Christmas tree d-casing pipe 2-The long and wide piece of easing which is the first string to be inserted in the hole is known as a a drill collars b-conductor pipe C d-casing pipe
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JAVA 1) When you write code that may cause a checked exception to be thrown (such as an IOException), you have two options to get the code to compile. What are the two options. 2) A method in a subclass having the same signature as a method in the superclass is an example of _________________________ . 3) A method in a subclass having the same

SMTP protocol is client - sever based Group of answer choices True False

course: computer organisation The result of -43 +20 in binary is Select one: a. 00001111 b. 11101001 c. 11111001 d. 00100111
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JAVA Additional requirements: Solution, must be object oriented design remonstrated with a driver. Welcome the user with a message that you read from a file called "input.txt". Write the results of the game to the terminal and also to the output file called, "output.txt" and remind the user to look at that file if he/she wants to. Write a program

Connect to the VM, then complete the following practice. SHOW ANSWERS FOR ALL PLS. Connect to the Ubuntu VM, then complete the following practice. 1. Copy file /usr/share/doc/ubuntu-docs/copyright to your home directory. [NOTE: You can use any text file that is large if you cannot find this file on yours] 2. Perform a long list in your current
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Use Matlab, please. Newton's law of cooling says that the temperature of a body changes at a rate propor- tional to the difference between its temperature and that of the surrrounding medium (the ambient temperature), dT -k(T Ta) dt where T is the temperature of the body (C), t is time (minutes), k is the proportionality constant (per minute), and
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Make a table that shows the values of all datapath and control signals in all clock periods of multicycle execution of the instruction lw $5, -32($11), where register 11 contains 0x1000 20ec.

(c) Develop an algorithm that computes the smallest three elements and the largest three elements of a set of n 2 6 distinct elements in O(n) time
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12. Find the following differences using twos complement arithmetic. Also indicate the values of sign, zero, carry and overflow flags (N Z CV). a. 110011 b. 11001100 c. 111100001111 d. 11000011 11101000 110011 101110 110011110011
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java program QUESTION 4 6 points Save Answer The interface Scheduled has only one method named appointment that takes a String parameter and returns a Date object. Write the complete code of the interface
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e . Develop a procedure to isolate the status bit of machine 2 as the sign bit. For example, if the BUSYNESS pattern is 0 1 0 1 1 1 0 0 , then the output of this procedure is 1 0 0 0 0 0 0 0 . If the BUSYNESS pattern is 0 1 1 1 0 0 1 1 , then the output is 0 0 0 0 0 0 0 0 . In general, if the BUSYNESS patrern is b 7 b 6 b 5 b 4 b 3 b 2 b l b 0 ,
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LaTanya Corporation is planning o issue bonds with a ace va ue o $101,500 and a coupon rate of 8 percent. The bonds a u e seven years. n eres s aid annua o ecember 3 on January 1 of this year. (FV of $1, PV of $1, FVA of $1, and PVA of $1) (Use the appropriate factor(s) from the tables provided. Round your final answer to whole dollars.) A of he
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What does the ICMPv 4 Destination Unreachable code ' 2 ' signify? B . Protocol Unreachable C . Port Unreachable D . Host Unreachable A . Net Unreachable
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C language please Assignment Content This Project requires concepts inclusive of Chapters 1 - 3 . You must use branching ( Chapter 3 ) and variables with correct data types and format specifiers ( Chapter 2 ) . Careful attention to detail on format is very important for this project. Please reference the example output provided. You have been
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Java pig the dice The Game of Pig assignment will use a two-dice variation where sixes are "bad". You will write a program that will allow you (the "player") to play against the computer. The rules of the game are: The first player to accumulate a score of 100 or more wins. The human goes first. After one roll, a player has the choice to "hold" or

Machine learning 53. Suppose that Ali can decide to go to work by one of three modes of transportation, car, bus, or train. Because of high traffic, if he decides to go by car, there is a 60% chance he will be late. If he goes by bus, the probability of being late is 30%. The train is late with a probability of only 15%. One day Ali is late.
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if we were to replace the sign extend module with a zero extend how ould this affect itype instruction

Q4: Generate optimized SOP functions for the following Karnaugh maps. Q4: Generate optimized SOP functions for the following Karnaugh maps. X, X2 34 X, X2 34 0001 11 10 00 01 11 10 00 1 1 001 1 1 01 01 1 1 1 1 11 1 1 1 11 1 1 10 1 1 1 1 10 1 1
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DQ1: What are panes in Excel 2019 and how are they beneficial to users? DQ2: Describe how Excel users can sort records in a data range. What does it mean to sort by multiple fields in Excel? Share with the class how you could see yourself using this sorting feature. DQ3: What are Excel Tables? Explain how users are able to add a total row to an

MINIMUM SPANNING TREE GRAPH NEEDED: 7. 112 points] Find the minimum spanning tree for the graph in problem 6(b) using the two methods below. For each, indicate the sequence in which the edges are chosen, and draw the resulting tree for each step. a. Prim's algorithm b. Kruskal's algorithm
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Consider the following assembly code: Instruction Description LOAD R1, M1 Read data from memory address M1 and store in Ri. LOAD R2, M2 Read data from memory address M2 and store in R2. OR R3, R1, R2 JUMP Target1 Target2: XOR R2, R1, R1 Logical Ex-OR between contents of R1 with R1 and store result in R2 Target3: ADD R7, R1, R5 Add contents of R1
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create an app on android studio to document life memories. View saved memories in a list display thumbnails and caption Select a memory from the list and view details a bigger sized image, caption and information; allow users to edit the location & caption or delete the memory.. Yes please add screen shot im really confused

Write a function in Java that implements the following logic: Given three ints, a b c, return true if one of them is 10 or more less than one of the others.

Give examples to show that, in the worst case, the asymptotic running time of bidirectional BFS is the same as that of ordinary BFS. Note that because we are asking for asymptotic running time, you actually need to provide an infinite family of examples (Gn, sn, tn) such that sn,tn E V(Gn), the asymptotic running time of BFS and bidirectional BFS
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There are five basic FSMO roles.Which answer is not a FSMO role? Question 9 options: Domain Naming Master Catalog Server Master Schema Master Infrastructure Master

If your server computer is down for 6 minutes, its uptime is till 9 9 . 9 9 9 % True False

In Illustration 1 , line 2 2 , tires is the array name so how can a pointer be set to that value? The element of tires is the array subscript The name of the array is the address of the first element The name of tires is the value of the element The assignment takes place before tires is referenced
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LEARNING to Program with Robots (JAVA) The link to the textbook is: http://www.learningwithrobots.com/textbook/PDFs/WholeThing.pdf Part A: Write a class named BustedBot that extends RobotSE. A BustedBot is unreliable, occasionally turning either right or left (apparently at random) before moving. The probabilities of turning are given as two

Use the algorithm discussed in class for computing binary values for base 10 fractions for the following fractional values. Use 7 bits. a.0.731 b.0.400 8. Compute the decimal equivalents of the binary numbers computed in 7. What is the round-off error

1. The || operator returns true only if both statements surrounding it are true: (true or false) 2. The body of an if statement executes if the tested condition is false: (true or false) 3. A ! reverses the truth of the statement: (true or false) 4. The || operator returns true only if both statements surrounding it are true: (true or false)

Using Java to implement a programming calculator as below Disable Dword, Word, Byte, but keep the buttons there. Also, no interaction of the mouse on the binary bits area is required. Just display 64 bits for all the items with appropriate bits filled in based on the value in the number field. Test Case: Please find below the list of test cases.
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This question has 2 parts. The database diagrams are shown below. 1- Using the Northwind database provided in the sql script, display all of the Region Descriptions and their associated Territory Descriptions. The display must have the Region Description first and the Territory Description second. Sort the results alphabetically by Region
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For this problem you want to estimate the derivative of the function = ( ) at = . See Lab 0 1 for the definition of ( ) . Use both the forward difference, ( 0 ) = ( 0 + ) ( 0 ) + ( ) and the centered difference ( 0 ) = ( 0 + ) ( 0 ) 2 + ( 2 ) For the step sizes, let = 1 / 2 1 , with = 1 , 2 , . . . , . For = 1 0 , find and save the absolute true

2. Write a program to take the prices of 5 products and calculate the total price, then issue the discount of 5% of total price and display the remaining payable amount. Digits displayed in program should have only decimal places Program should produce the similar output as shown below. nactive CATCWIN BINNONAMEOO.EXE) Enter the Price of Phone
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How many elements does P have after the for loop executes? clear; clc birth = 0 . 0 2 ; death = 0 . 0 0 ; deltat = 1 ; P ( 1 ) = 1 0 0 0 for t = 1 : 2 0 P ( t + 1 ) = P ( t ) + deltat * ( birth - death ) * P ( t ) ; end
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CopyBinaryFile.java is used in order to make the method work, below is the code. If you need any of the code from the lib implemented for the program: use JavaFXControlsSample from google or let me know and I will upload script. Lab 6 - Copy Files Introduction This project we will write a JavaFx program that lets users copy files. This will
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Connect 4 Game GUI using JAVA Create a turn based game with a GUI, where players take turns dropping their marker into a column until either someone wins, or the board is full. Display the current player on each turn. At the end of a game display the winner and ask if they want to play again. Board: For Connect 4, the board should have 6 rows and

3. Collaborative Problem. A number of peer-to-peer systems on the internet are based on overlay networks. Rather than using the physical internet as the network on which to perform computation, these systems run protocols by which nodes choose collections of virtual "neighbors" so as to define a higher-level graph whose structure may bear little
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Has to be written in C#. Write a Windows Forms application that calculates and prints the take-home pay for a commissioned sales employee. Allow the user to enter values for the name of the employee and the sales amount for the week. Employees receive 7% of the total sales. Federal tax rate is 18%. Retirement contribution is 15%. Social Security
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Assume we want to execute the DAXP loop in ARMv8t assembly on the NVIDIA 8800 GTX GPU Here is the vector LEGv8 code for DAXPY: LDURD LDURDV FMULDVS LDURDV FADDDV STURDV DO, [X28,a] VI,[X19,#0] V2,V1,DO V3,[X20,#0] V4,V2,V3 V4,[X20,#0] //load scalar a //load vector x Ivector-scalar multiply //load vector y //add y to product //store the result 6.13
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I need help this code Strike a Chord Proposed Website for Strike a ChordPresented by: Katelyn NolanMiss To provide world - class instruction with each music lesson.Target audience: People ages 3 to 6 5 Linear website structure, pages to include: Home, Lessons, Instructors, Rentals, ContactGraphics: Images that showcase lesson opportunitiesColors:
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Established in 1914, ABC-books is well-known in Accra, Kumasi and Tamale. The shop has operated manually since its inception; however, since 2000 ABC -books has witnessed a consistent decline in sales across all its branches .This has compelled management of ABC-book shop to go online with their activities. The following requirements were gathered

Can someone please take a picture/screenshot of the program running for output and use the proper written code from my error. Please help Iglobala) Project Classes Debug main (): int end1:11 2 using namespace std; 3 int main) 4 int people[19]={75,78,79,78,77,76,66, 78, 72,73) 5 int height, i, a[ie] 6 for (ie, i=79) 10 cout 74 && a[1]>74 && [1](79)
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Use an algorithm to find the maxima set from the following set of 12 points: {(3,1), (1,2), (5,3), (7,5), (4,4), (6,7), (2,4), (1,8), (9,4), (8,2), (6,3), (5,1),) } Explain how the steps you followed to get the answer

Write an int ( input ( ) ) statement to read and store the value num _ potatoes from input. Then, write a print ( ) statement to output 'I want to buy', the variable num _ potatoes, and 'potatoes. '

Exercise: Software List Sometimes it takes more than just a glance at the class diagram to spot problems with a design. Consider the following class type that might be used by a software vendor to list software titles that are available. There is nothing obviously wrong with this design. However, the users of this database might enter data that
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Messages_Nau's phone Messages_Sebastian's phone ) A report that summarizes the results of your analysis of the SIM card data and notes whether or not there is sufficient evidence to continue the investigation? Do I need use any forensics tool to analyze the data? Do you think there is sufficient evidence in these messages to continue the
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Consider the following partial class definitions: public class A 1 { public int x; private int y; protected int z; . . . } public class A 2 extends A 1 { protected int a; private int b; . . . } public class A 3 extends A 2 { private int q; . . . } Which of the following is true regarding the use of instance data y of class A 1 ? Group of answer

write about Semantic Versioning

DONOT make code i just need only some sentences and math i will upvote just be quick An array A[0..k-1] of bits (each array element is 0 or 1) stores a binary number X = A[i]2. To add 1 (modulo 25) to x, we use the following procedure: INCREMENT(A.k) 1. ito 2. while i
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This question won't take you more than 15 mins, and junit test provided. In past terms, the biggest struggle students have had is in understanding how/when indexes work. This question is asking you to write the add(), remove(), and get() methods which use indices . To keep the focus on using (arrays and) indices correctly, this class does not (and

write a python code for Given a set of DNA sequences ( dna . csv ) , write a program to find the MOTIF ( size of the lmer is 6 ) . You can implement using of Gibbs sampling algorithm. ( a ) Estimate the time complexity ( by setting up a counter in your program ) and print it . In the end, we will analyze how much time is taken by algorithms. ( b )

If you run the following code, what will be the data type of variable num 2 ? ) = ( 1 6 you will get an error message int float str
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The data access layer decides what to do with the data after it's transferred. Select one: True False

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