Mathematical Excursions (MindTap Course List)
4th Edition
ISBN: 9781305965584
Author: Richard N. Aufmann, Joanne Lockwood, Richard D. Nation, Daniel K. Clegg
Publisher: Cengage Learning
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Chapter 9, Problem 4RE
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The equation
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Find two positive numbers x and y such that x + y = 14 and they minimize x² + y².
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7) Solve the given system using the Gaussian Elimination process.
(5x-4y = 34
(2x - 2y = 14
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Chapter 9 Solutions
Mathematical Excursions (MindTap Course List)
Ch. 9.1 - Amy is 140 lb and 58 tall. Calculate Amys BMI....Ch. 9.1 - Roger is 511. How much should he weigh in order to...Ch. 9.1 - Prob. 3EECh. 9.1 - Felicia weighs 160 lb and is 57. She would like to...Ch. 9.1 - Finding BMI Using a Nomograph Most medical...Ch. 9.1 - Prob. 1ESCh. 9.1 - Prob. 2ESCh. 9.1 - Explain how to check the solution of an equation.Ch. 9.1 - Prob. 4ESCh. 9.1 - Prob. 5ES
Ch. 9.1 - Prob. 6ESCh. 9.1 - Prob. 7ESCh. 9.1 - Prob. 8ESCh. 9.1 - Solve the equation. 48=6zCh. 9.1 - Prob. 10ESCh. 9.1 - Prob. 11ESCh. 9.1 - Prob. 12ESCh. 9.1 - Solve the equation. x4=2Ch. 9.1 - Prob. 14ESCh. 9.1 - Prob. 15ESCh. 9.1 - Prob. 16ESCh. 9.1 - Solve the equation. 5x3=9x7Ch. 9.1 - Prob. 18ESCh. 9.1 - Prob. 19ESCh. 9.1 - Prob. 20ESCh. 9.1 - Prob. 21ESCh. 9.1 - Prob. 22ESCh. 9.1 - Solve the equation. 4b+15=32bCh. 9.1 - Prob. 24ESCh. 9.1 - Prob. 25ESCh. 9.1 - Prob. 26ESCh. 9.1 - Solve the equation. 5(32y)=34yCh. 9.1 - Prob. 28ESCh. 9.1 - Prob. 29ESCh. 9.1 - Prob. 30ESCh. 9.1 - Solve the equation. 4a+3=7(58a)Ch. 9.1 - Prob. 32ESCh. 9.1 - Prob. 33ESCh. 9.1 - Prob. 34ESCh. 9.1 - Solve the equation. 3(x4)=1(2x7)Ch. 9.1 - Solve the equation. 2y34=y61Ch. 9.1 - Solve the equation. x8+2=3x43Ch. 9.1 - Solve the equation. 2x33+12=56Ch. 9.1 - Solve the equation. 23+3x+14=53Ch. 9.1 - Prob. 40ESCh. 9.1 - Prob. 41ESCh. 9.1 - Car Payments The monthly car payment on a 60-month...Ch. 9.1 - Car Payments The monthly car payment on a 60-month...Ch. 9.1 - Deep-Sea Diving The pressure on a diver can be...Ch. 9.1 - Deep-Sea Diving The pressure on a diver can be...Ch. 9.1 - Prob. 46ESCh. 9.1 - Foot Races The world-record time for a 1-mile race...Ch. 9.1 - Black Ice Black ice is an ice covering on roads...Ch. 9.1 - Black Ice Black ice is a nice covering on roads...Ch. 9.1 - Crickets The formula N=7C30 approximates N, the...Ch. 9.1 - Crickets The formula N=7C30 approximates N, the...Ch. 9.1 - Prob. 52ESCh. 9.1 - Prob. 53ESCh. 9.1 - Prob. 54ESCh. 9.1 - Prob. 55ESCh. 9.1 - Write an equation as part of solving the problem....Ch. 9.1 - Prob. 57ESCh. 9.1 - Prob. 58ESCh. 9.1 - Prob. 59ESCh. 9.1 - Write an equation as part of solving the problem....Ch. 9.1 - Prob. 61ESCh. 9.1 - Write an equation as part of solving the problem....Ch. 9.1 - Write an equation as part of solving the problem....Ch. 9.1 - Prob. 64ESCh. 9.1 - Prob. 65ESCh. 9.1 - Prob. 66ESCh. 9.1 - Prob. 67ESCh. 9.1 - Prob. 68ESCh. 9.1 - Prob. 69ESCh. 9.1 - Prob. 70ESCh. 9.1 - Prob. 71ESCh. 9.1 - Solve the formula for the indicated variable....Ch. 9.1 - Prob. 73ESCh. 9.1 - Prob. 74ESCh. 9.1 - Prob. 75ESCh. 9.1 - Solve the formula for the indicated variable....Ch. 9.1 - Solve the formula for the indicated variable....Ch. 9.1 - Solve the formula for the indicated variable....Ch. 9.1 - Prob. 79ESCh. 9.1 - Prob. 80ESCh. 9.1 - Prob. 81ESCh. 9.1 - Prob. 82ESCh. 9.1 - Prob. 83ESCh. 9.1 - Prob. 84ESCh. 9.1 - Prob. 85ESCh. 9.1 - Prob. 86ESCh. 9.1 - Prob. 87ESCh. 9.1 - Prob. 88ESCh. 9.1 - Prob. 89ESCh. 9.1 - Prob. 90ESCh. 9.1 - Prob. 91ESCh. 9.1 - Prob. 92ESCh. 9.1 - Prob. 93ESCh. 9.2 - In 1979, his rookie year, Jeff Reardon pitched 21...Ch. 9.2 - Prob. 2EECh. 9.2 - In 1987, Nolan Ryan had the lowest ERA of any...Ch. 9.2 - During the 2015 season, Jake Arrieta of the...Ch. 9.2 - Prob. 5EECh. 9.2 - Prob. 1ESCh. 9.2 - Prob. 2ESCh. 9.2 - Write the expression as a unit rate. 582mi in 12hCh. 9.2 - Write the expression as a unit rate. 138mi on 6...Ch. 9.2 - Write the expression as a unit rate. 544 words...Ch. 9.2 - Write the expression as a unit rate. 100m in 8sCh. 9.2 - Write the expression as a unit rate. 9100 for 350...Ch. 9.2 - Write the expression as a unit rate. 1000 ft2 of...Ch. 9.2 - Wages A machinist earns 682.50 for working a...Ch. 9.2 - Space Vehicles The Space Shuttles solid rocket...Ch. 9.2 - Photography During filming, an IMAX camera uses...Ch. 9.2 - Consumerism Which is the more economical purchase,...Ch. 9.2 - Consumerism Which is the more economical purchase,...Ch. 9.2 - Wages You have a choice of receiving a wage of...Ch. 9.2 - Baseball Baseball statisticians calculate a...Ch. 9.2 - Population Density The table below shows the...Ch. 9.2 - E-mail The Radicati Group compiled the following...Ch. 9.2 - Prob. 18ESCh. 9.2 - Prob. 19ESCh. 9.2 - Exchange Rates The table below shows the exchange...Ch. 9.2 - Exchange Rates The table below shows the exchange...Ch. 9.2 - Real Estate Dean Baker, co-director at the Center...Ch. 9.2 - Real Estate Dean Baker, co-director at the Center...Ch. 9.2 - Prob. 24ESCh. 9.2 - Prob. 25ESCh. 9.2 - Prob. 26ESCh. 9.2 - Solve the proportion. Round to the nearest...Ch. 9.2 - Prob. 28ESCh. 9.2 - Prob. 29ESCh. 9.2 - Prob. 30ESCh. 9.2 - Solve the proportion. Round to the nearest...Ch. 9.2 - Solve the proportion. Round to the nearest...Ch. 9.2 - Solve the proportion. Round to the nearest...Ch. 9.2 - Prob. 34ESCh. 9.2 - Prob. 35ESCh. 9.2 - Prob. 36ESCh. 9.2 - Solve the proportion. Round to the nearest...Ch. 9.2 - Prob. 38ESCh. 9.2 - A management consulting firm recommends that the...Ch. 9.2 - Medication The dosage of a cold medication is 2 mg...Ch. 9.2 - Fuel Consumption If your car can travel 70.5 mi on...Ch. 9.2 - The scale on the architectural plans for a new...Ch. 9.2 - Prob. 43ESCh. 9.2 - Art Leonardo da Vinci measured various distances...Ch. 9.2 - Art In one of Leonardo da Vincis notebooks, he...Ch. 9.2 - A pre-election survey showed that two out of every...Ch. 9.2 - One study estimated that in the U.S., the average...Ch. 9.2 - Prob. 48ESCh. 9.2 - Nutrition A pancake 4 in. in diameter contains 5 g...Ch. 9.2 - Prob. 50ESCh. 9.2 - Prob. 51ESCh. 9.2 - Prob. 52ESCh. 9.2 - The U.S. House of Representatives has a total of...Ch. 9.3 - Use the 2015 Tax Rate Schedules to solve...Ch. 9.3 - Use the 2015 Tax Rate Schedules to solve...Ch. 9.3 - Use the 2015 Tax Rate Schedules to solve...Ch. 9.3 - Use the 2015 Tax Rate Schedules to solve...Ch. 9.3 - Does a taxpayer in the 33 tax bracket pay 33 of...Ch. 9.3 - Prob. 6EECh. 9.3 - Name three situations in which percent is used.Ch. 9.3 - Multiplying a number by 300 is the same as...Ch. 9.3 - Complete the table of equivalent fractions,...Ch. 9.3 - Complete the table of equivalent fractions,...Ch. 9.3 - Complete the table of equivalent fractions,...Ch. 9.3 - Complete the table of equivalent fractions,...Ch. 9.3 - Complete the table of equivalent fractions,...Ch. 9.3 - Complete the table of equivalent fractions,...Ch. 9.3 - Complete the table of equivalent fractions,...Ch. 9.3 - Complete the table of equivalent fractions,...Ch. 9.3 - Complete the table of equivalent fractions,...Ch. 9.3 - Complete the table of equivalent fractions,...Ch. 9.3 - e-Filed Tax Returns The IRS reported that as of...Ch. 9.3 - A credit card company offers an annual 2 cash-back...Ch. 9.3 - Charitable Contributions During a recent year,...Ch. 9.3 - Television A survey by the Boston Globe questioned...Ch. 9.3 - A survey of 1236 adults nation wide asked, What...Ch. 9.3 - Wind Energy In a recent year, wind machines in the...Ch. 9.3 - During 1 year. Approximately 2,240,000 oz of gold...Ch. 9.3 - The two circle graphs how surveyed employees...Ch. 9.3 - A TurboTax online survey asked people how they...Ch. 9.3 - Diabetes Approximately 9.3 of the American...Ch. 9.3 - Education Of the 78 million baby boomers living in...Ch. 9.3 - The number of Internet users worldwide went from...Ch. 9.3 - The graph below shows the projected growth of the...Ch. 9.3 - Auto Sales U.S. auto sales increased from 16.5...Ch. 9.3 - Cable TV In 2006. 65.4 million people subscribed...Ch. 9.3 - Consumption of Eggs During the last 50 years, the...Ch. 9.3 - Millionaire Households The following table shows...Ch. 9.3 - The graph below shows the number of active-duty...Ch. 9.3 - Your employer agrees to give you a 5 raise after 1...Ch. 9.3 - Prob. 32ESCh. 9.3 - Nielsen Ratings Nielsen Media Research surveys...Ch. 9.4 - Solve the equation and then check the solutions...Ch. 9.4 - Prob. 2EECh. 9.4 - Prob. 3EECh. 9.4 - Prob. 4EECh. 9.4 - Prob. 5EECh. 9.4 - Prob. 6EECh. 9.4 - Prob. 7EECh. 9.4 - Prob. 8EECh. 9.4 - Prob. 9EECh. 9.4 - Prob. 10EECh. 9.4 - Prob. 11EECh. 9.4 - Prob. 12EECh. 9.4 - Prob. 13EECh. 9.4 - Prob. 14EECh. 9.4 - Prob. 15EECh. 9.4 - Prob. 16EECh. 9.4 - First try to solve the equation by factoring. If...Ch. 9.4 - Prob. 2ESCh. 9.4 - First try to solve the equation by factoring. If...Ch. 9.4 - First try to solve the equation by factoring. If...Ch. 9.4 - Prob. 5ESCh. 9.4 - Prob. 6ESCh. 9.4 - First try to solve the equation by factoring. If...Ch. 9.4 - First try to solve the equation by factoring. If...Ch. 9.4 - First try to solve the equation by factoring. If...Ch. 9.4 - First try to solve the equation by factoring. If...Ch. 9.4 - First try to solve the equation by factoring. If...Ch. 9.4 - Prob. 12ESCh. 9.4 - Prob. 13ESCh. 9.4 - First try to solve the equation by factoring. If...Ch. 9.4 - First try to solve the equation by factoring. If...Ch. 9.4 - Prob. 16ESCh. 9.4 - First try to solve the equation by factoring. If...Ch. 9.4 - Prob. 18ESCh. 9.4 - First try to solve the equation by factoring. If...Ch. 9.4 - Prob. 20ESCh. 9.4 - Prob. 21ESCh. 9.4 - Prob. 22ESCh. 9.4 - Prob. 23ESCh. 9.4 - Prob. 24ESCh. 9.4 - Prob. 25ESCh. 9.4 - Prob. 26ESCh. 9.4 - Round answers to nearest hundredth where...Ch. 9.4 - Prob. 28ESCh. 9.4 - Round answers to nearest hundredth where...Ch. 9.4 - Round answers to nearest hundredth where...Ch. 9.4 - Round answers to nearest hundredth where...Ch. 9.4 - Prob. 32ESCh. 9.4 - Prob. 33ESCh. 9.4 - Prob. 34ESCh. 9.4 - Round answers to nearest hundredth where...Ch. 9.4 - Prob. 36ESCh. 9.4 - Prob. 37ESCh. 9.4 - Prob. 38ESCh. 9.4 - Round answers to nearest hundredth where...Ch. 9.4 - Round answers to nearest hundredth where...Ch. 9.4 - Prob. 41ESCh. 9.4 - Prob. 42ESCh. 9.4 - Prob. 43ESCh. 9.4 - Prob. 44ESCh. 9.4 - Prob. 45ESCh. 9.4 - Prob. 46ESCh. 9.4 - Prob. 47ESCh. 9.4 - Prob. 48ESCh. 9.4 - Prob. 49ESCh. 9.4 - Prob. 50ESCh. 9 - Solve the equation. 5x+3=10x17Ch. 9 - Prob. 2RECh. 9 - Prob. 3RECh. 9 - Prob. 4RECh. 9 - Prob. 5RECh. 9 - Prob. 6RECh. 9 - Prob. 7RECh. 9 - Prob. 8RECh. 9 - Solve the formula for the given variable....Ch. 9 - Prob. 10RECh. 9 - Prob. 11RECh. 9 - Prob. 12RECh. 9 - Chemistry A chemist mixes 100g of water at 80C...Ch. 9 - Telemarketing At a telemarketing firm, an employee...Ch. 9 - Prob. 15RECh. 9 - Prob. 16RECh. 9 - Social Media In July 2012, Instagram announced 80...Ch. 9 - City Populations The table below shows the...Ch. 9 - Prob. 19RECh. 9 - Prob. 20RECh. 9 - Gardening Three tablespoons of a liquid plant...Ch. 9 - Prob. 22RECh. 9 - Prob. 23RECh. 9 - Diet Americans consume 7 billion hot dogs from...Ch. 9 - Boston Marathon In the 2015 Boston Marathon,...Ch. 9 - Prob. 26RECh. 9 - Prob. 27RECh. 9 - Prob. 28RECh. 9 - Prob. 29RECh. 9 - Vacation Days In Italy, workers take an average of...Ch. 9 - Model Rockets A small rocket is shot from the edge...Ch. 9 - Prob. 32RECh. 9 - Prob. 1TCh. 9 - Prob. 2TCh. 9 - Prob. 3TCh. 9 - Prob. 4TCh. 9 - Prob. 5TCh. 9 - Prob. 6TCh. 9 - Prob. 7TCh. 9 - Prob. 8TCh. 9 - Energy The cost of electricity in a certain city...Ch. 9 - Prob. 10TCh. 9 - Prob. 11TCh. 9 - Prob. 12TCh. 9 - Social Media In 2015, Twitter announced that they...Ch. 9 - Prob. 14TCh. 9 - Gardening The directions on a bag of plant food...Ch. 9 - Prob. 16TCh. 9 - Prob. 17TCh. 9 - Prob. 18TCh. 9 - Compact Disc Sales In 2005, the total number of...Ch. 9 - Prob. 20T
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