Numerade

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Write a program that computes and displays the discriminant for the equation 3x2+4x+5=0

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(6 points) Problem #2. A study from the University of Texas Southwestern Medical Center examined whether the risk of hepatitis C was related to whether people had tattoos and to where they got their tattoos. Hepatitis C causes about 100,000 deaths each year in the United States, but often lies undetected for years after infection. Hepatitis C NO Hepatitis C Total Tattoo, Parlor 17 35 52 Tattoo, Elsewhere 8 53 61 None 22 491 513 Total 47 579 626 (a) What are the two categorical variables? How many categories are there for each variable? Categorical Variable #1 Categorical Variable #2 Number of Categories Number of Categories (b) Based on the results of the sample, what percentage of people have hepatitis C? State your final answer using a clear, complete sentence. (c) Based on the results of the sample, what percentage of people have hepatitis C given the person has a tattoo from a parlor? State your final answer using a clear, complete sentence. (d) Based on the results of the sample, what percentage of people have hepatitis C given the person does not have a tattoo? State your final answer using a clear, complete sentence.

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Which of the following statements concerning ideal standards is incorrect? 1) Ideal standards generally do not provide the best motivation for workers. 2) Ideal standards do not make allowances for waste, spoilage, and machine breakdowns. 3) Ideal standards are better suited for cash budgeting than practical standards. 4) Ideal standards may be better than practical standards when managers seek continual improvement.

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4. A 0.100-kg toy car is propelled by a compressed spring, as shown in the illustration below. The car follows a track that rises 0.180 m above the starting point. The spring is compressed 4.00 cm and has a force constant of 250.0 N/m. Assuming work done by friction to be negligible. (a) Calculate how fast the car is going before it starts up the slope and (b) Calculate how fast it is going at the top of the slope. {The details of the path are unimportant because all forces are conservative-the car would have the same final speed if it took the alternate path shown.) (c) Now, let's turn on friction on the path of the car. If the toy car was clocked at 0.500 m/s at the top the slope (i.e., slower speed than calculated in part (b)), find the work done on the toy car by friction. {Hint: Find $W_{friction} = \Delta KE + \Delta PE_{gravitational} + \Delta PE_{spring}$}

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A true statement about consumer practices related to the security of their data is: Question 1 options: a) most users don't use security software. b) most users are not sure they are protected from malware. c) most users don't feel safe using online banking. d) All of these are correct.

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A project has the following costs and benefits. What is the payback period?... A project has the following costs and benefits. What is the payback period?.. Year Costs Benefits 0 $65,000 12 15,000 3 5,000 $50,000 4-10 $10,000 in each year

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Which of the following is measured by Nominal GDP?

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Your company plans to migrate an ASP.NET website to an Azure App Service named App1. You need to design a solution for App1 that meets the following requirements: Provides a development environment and a production environment Can instantly swap environments without downtime What should you include in the design? Select only one answer. a load balancer and two virtual machines two Azure Storage accounts two deployment slots two snapshots

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The structure that equalizes pressure in the middle ear is the: round window. tympanic membrane. eustachian tube. oval window.

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1. Check the CFG below: S? aAB | bA | ? A ? aAb | ? B ? bB | c [10] Analyze if above CFG is LL(1), SLR(1), CLR(1) and LALR(1) by parsing the input string \"aabc\". You must show the complete process for checking the parsing techniques. For example, to check if the grammar is SLR(1) or not, you should first create the LR(0) items then the SLR(1) parsing table. If there is no conflict in the parsing table, parse the input string aabc with the help of the parsing table. Follow this process for the rest of the parsers. Also explain which parsing technique will be the most efficient.

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lynn b.