Math in Our World
Math in Our World
3rd Edition
ISBN: 9780073519678
Author: David Sobecki Professor, Allan G. Bluman
Publisher: McGraw-Hill Education
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Unitary Method
The word “unitary” comes from the word “unit”, which means a single and complete entity. In this method, we find the value of a unit product from the given number of products, and then we solve for the other number of products.
Speed, Time, and Distance
Imagine you and 3 of your friends are planning to go to the playground at 6 in the evening. Your house is one mile away from the playground and one of your friends named Jim must start at 5 pm to reach the playground by walk. The other two friends are 3 …
Profit and Loss
The amount earned or lost on the sale of one or more items is referred to as the profit or loss on that item.
Units and Measurements
Measurements and comparisons are the foundation of science and engineering. We, therefore, need rules that tell us how things are measured and compared. For these measurements and comparisons, we perform certain experiments, and we will need the experime…
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Chapter 9.3, Problem 79E

An elevator says the maximum capacity is 1,000 kg. Twelve people are already on the elevator, their weight totaling 2,000 lb. Another man who weighs 260 lb wants to get on. Should they let him onto the elevator?

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Chapter 9.3, Problem 78E
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Chapter 9 Solutions

Math in Our World

Ch. 9.1 - Convert 81 feet to yards.Ch. 9.1 - The maximum cruising height of a Boeing 737 is...Ch. 9.1 - A football field is 100 yards long. How many...Ch. 9.1 - The speed of sound at sea level and room...Ch. 9.1 - Prob. 5TTOCh. 9.1 - Prob. 6TTOCh. 9.1 - Prob. 7TTOCh. 9.1 - Prob. 8TTOCh. 9.1 - Prob. 1ECh. 9.1 - Prob. 2E
Ch. 9.1 - Prob. 3ECh. 9.1 - Prob. 4ECh. 9.1 - Prob. 5ECh. 9.1 - Describe a good rule of thumb for relating inches...Ch. 9.1 - Prob. 7ECh. 9.1 - Prob. 8ECh. 9.1 - For Exercises 718, convert each using dimensional...Ch. 9.1 - Prob. 10ECh. 9.1 - Prob. 11ECh. 9.1 - Prob. 12ECh. 9.1 - Prob. 13ECh. 9.1 - Prob. 14ECh. 9.1 - Prob. 15ECh. 9.1 - Prob. 16ECh. 9.1 - Prob. 17ECh. 9.1 - Prob. 18ECh. 9.1 - Prob. 19ECh. 9.1 - Prob. 20ECh. 9.1 - For Exercises 1958, convert each measurement to...Ch. 9.1 - Prob. 22ECh. 9.1 - For Exercises 1958, convert each measurement to...Ch. 9.1 - Prob. 24ECh. 9.1 - For Exercises 1958, convert each measurement to...Ch. 9.1 - For Exercises 1958, convert each measurement to...Ch. 9.1 - Prob. 27ECh. 9.1 - Prob. 28ECh. 9.1 - Prob. 29ECh. 9.1 - For Exercises 1958, convert each measurement to...Ch. 9.1 - For Exercises 1958, convert each measurement to...Ch. 9.1 - Prob. 32ECh. 9.1 - Prob. 33ECh. 9.1 - Prob. 34ECh. 9.1 - Prob. 35ECh. 9.1 - Prob. 36ECh. 9.1 - Prob. 37ECh. 9.1 - Prob. 38ECh. 9.1 - Prob. 39ECh. 9.1 - Prob. 40ECh. 9.1 - Prob. 41ECh. 9.1 - Prob. 42ECh. 9.1 - Prob. 43ECh. 9.1 - Prob. 44ECh. 9.1 - Prob. 45ECh. 9.1 - For Exercises 1958, convert each measurement to...Ch. 9.1 - Prob. 47ECh. 9.1 - Prob. 48ECh. 9.1 - For Exercises 1958, convert each measurement to...Ch. 9.1 - Prob. 50ECh. 9.1 - Prob. 51ECh. 9.1 - Prob. 52ECh. 9.1 - Prob. 53ECh. 9.1 - Prob. 54ECh. 9.1 - Prob. 55ECh. 9.1 - Prob. 56ECh. 9.1 - Prob. 57ECh. 9.1 - Prob. 58ECh. 9.1 - Prob. 59ECh. 9.1 - A professional basketball court is 94 feet long....Ch. 9.1 - Prob. 61ECh. 9.1 - Prob. 62ECh. 9.1 - Prob. 63ECh. 9.1 - Prob. 64ECh. 9.1 - Prob. 65ECh. 9.1 - What are the dimensions of a 6 dm by 5 dm piece of...Ch. 9.1 - Prob. 67ECh. 9.1 - If a millipede has 1,000 legs, how many legs would...Ch. 9.1 - Prob. 69ECh. 9.1 - Prob. 70ECh. 9.1 - Prob. 71ECh. 9.1 - Prob. 72ECh. 9.1 - Prob. 73ECh. 9.1 - Prob. 74ECh. 9.1 - Prob. 75ECh. 9.1 - Prob. 76ECh. 9.1 - Prob. 77ECh. 9.1 - Prob. 78ECh. 9.1 - A college is building a new basketball court that...Ch. 9.1 - If three servings of ice cream have 20 grams of...Ch. 9.1 - Prob. 81ECh. 9.1 - The campus fitness center is installing an...Ch. 9.1 - Prob. 83ECh. 9.1 - Prob. 84ECh. 9.1 - Prob. 85ECh. 9.1 - Prob. 86ECh. 9.1 - Prob. 87ECh. 9.1 - Prob. 88ECh. 9.1 - Prob. 89ECh. 9.1 - Prob. 90ECh. 9.1 - Prob. 91ECh. 9.1 - Prob. 92ECh. 9.1 - Prob. 93ECh. 9.1 - Prob. 94ECh. 9.1 - Prob. 95ECh. 9.1 - In Problems 95104, decide what units in both the...Ch. 9.1 - Prob. 97ECh. 9.1 - Prob. 98ECh. 9.1 - In Problems 95104, decide what units in both the...Ch. 9.1 - In Problems 95104, decide what units in both the...Ch. 9.1 - Prob. 101ECh. 9.1 - Prob. 102ECh. 9.1 - Prob. 103ECh. 9.1 - Prob. 104ECh. 9.1 - Prob. 105ECh. 9.1 - What units would 7,000 cm have to be converted to...Ch. 9.1 - Prob. 107ECh. 9.2 - A 32-in. wide-screen TV has screen area 3.05 ft2....Ch. 9.2 - Prob. 2TTOCh. 9.2 - Prob. 3TTOCh. 9.2 - Fussy University prohibits any displays on...Ch. 9.2 - Prob. 5TTOCh. 9.2 - Prob. 6TTOCh. 9.2 - How many cubic feet of water are in a 100-gallon...Ch. 9.2 - Prob. 8TTOCh. 9.2 - Prob. 9TTOCh. 9.2 - Prob. 10TTOCh. 9.2 - Prob. 11TTOCh. 9.2 - Prob. 1ECh. 9.2 - Prob. 2ECh. 9.2 - Prob. 3ECh. 9.2 - Prob. 4ECh. 9.2 - Prob. 5ECh. 9.2 - Prob. 6ECh. 9.2 - Prob. 7ECh. 9.2 - For Exercises 768, convert each measurement to the...Ch. 9.2 - For Exercises 768, convert each measurement to the...Ch. 9.2 - Prob. 10ECh. 9.2 - Prob. 11ECh. 9.2 - Prob. 12ECh. 9.2 - Prob. 13ECh. 9.2 - Prob. 14ECh. 9.2 - Prob. 15ECh. 9.2 - Prob. 16ECh. 9.2 - Prob. 17ECh. 9.2 - Prob. 18ECh. 9.2 - Prob. 19ECh. 9.2 - Prob. 20ECh. 9.2 - Prob. 21ECh. 9.2 - Prob. 22ECh. 9.2 - Prob. 23ECh. 9.2 - Prob. 24ECh. 9.2 - Prob. 25ECh. 9.2 - Prob. 26ECh. 9.2 - Prob. 27ECh. 9.2 - Prob. 28ECh. 9.2 - Prob. 29ECh. 9.2 - Prob. 30ECh. 9.2 - Prob. 31ECh. 9.2 - Prob. 32ECh. 9.2 - Prob. 33ECh. 9.2 - Prob. 34ECh. 9.2 - Prob. 35ECh. 9.2 - Prob. 36ECh. 9.2 - Prob. 37ECh. 9.2 - Prob. 38ECh. 9.2 - Prob. 39ECh. 9.2 - Prob. 40ECh. 9.2 - Prob. 41ECh. 9.2 - Prob. 42ECh. 9.2 - Prob. 43ECh. 9.2 - For Exercises 768, convert each measurement to the...Ch. 9.2 - Prob. 45ECh. 9.2 - Prob. 46ECh. 9.2 - Prob. 47ECh. 9.2 - Prob. 48ECh. 9.2 - Prob. 49ECh. 9.2 - Prob. 50ECh. 9.2 - Prob. 51ECh. 9.2 - Prob. 52ECh. 9.2 - Prob. 53ECh. 9.2 - Prob. 54ECh. 9.2 - Prob. 55ECh. 9.2 - Prob. 56ECh. 9.2 - Prob. 57ECh. 9.2 - Prob. 58ECh. 9.2 - Prob. 59ECh. 9.2 - Prob. 60ECh. 9.2 - Prob. 61ECh. 9.2 - Prob. 62ECh. 9.2 - Prob. 63ECh. 9.2 - Prob. 64ECh. 9.2 - Prob. 65ECh. 9.2 - Prob. 66ECh. 9.2 - Prob. 67ECh. 9.2 - Prob. 68ECh. 9.2 - Prob. 69ECh. 9.2 - Jose has a 15-m2 garden and plans to buy some...Ch. 9.2 - Dan wants to pour a concrete patio in his...Ch. 9.2 - Chloe drank two 20-oz bottles of Diet Pepsi while...Ch. 9.2 - Prob. 73ECh. 9.2 - Prob. 74ECh. 9.2 - Prob. 75ECh. 9.2 - Prob. 76ECh. 9.2 - Prob. 77ECh. 9.2 - Prob. 78ECh. 9.2 - Five cubic feet of seawater have flooded into a...Ch. 9.2 - Prob. 80ECh. 9.2 - Prob. 81ECh. 9.2 - Prob. 82ECh. 9.2 - A search party covered 6 square miles of territory...Ch. 9.2 - A Jacuzzi was filled with 200 gallons of water....Ch. 9.2 - Prob. 85ECh. 9.2 - Prob. 86ECh. 9.2 - Prob. 87ECh. 9.2 - In Problems 8590, which unit would be most...Ch. 9.2 - Prob. 89ECh. 9.2 - Prob. 90ECh. 9.2 - Prob. 91ECh. 9.2 - Prob. 92ECh. 9.2 - Prob. 93ECh. 9.2 - Prob. 94ECh. 9.2 - Prob. 95ECh. 9.2 - Prob. 96ECh. 9.2 - Without doing any calculating, which sounds like...Ch. 9.2 - Prob. 100ECh. 9.2 - As a general rule, there are about 20 drops of...Ch. 9.3 - How many ounces is a 12-pound bowling ball?Ch. 9.3 - Prob. 2TTOCh. 9.3 - Prob. 3TTOCh. 9.3 - (a) One of the weight classes in Olympic boxing is...Ch. 9.3 - Barts football coach tells him that hell start...Ch. 9.3 - Prob. 6TTOCh. 9.3 - Prob. 7TTOCh. 9.3 - Prob. 1ECh. 9.3 - In most applications, weight and mass are treated...Ch. 9.3 - Even though the base unit of mass/weight in the...Ch. 9.3 - Measuring temperatures in metric units is...Ch. 9.3 - How do powers of 10 fit into the metric system of...Ch. 9.3 - Prob. 6ECh. 9.3 - For Exercises 716, convert to the indicated unit....Ch. 9.3 - For Exercises 716, convert to the indicated unit....Ch. 9.3 - For Exercises 716, convert to the indicated unit....Ch. 9.3 - For Exercises 716, convert to the indicated unit....Ch. 9.3 - Prob. 11ECh. 9.3 - Prob. 12ECh. 9.3 - Prob. 13ECh. 9.3 - Prob. 14ECh. 9.3 - For Exercises 716, convert to the indicated unit....Ch. 9.3 - For Exercises 716, convert to the indicated unit....Ch. 9.3 - For Exercises 1730, convert each metric weight to...Ch. 9.3 - For Exercises 1730, convert each metric weight to...Ch. 9.3 - For Exercises 1730, convert each metric weight to...Ch. 9.3 - For Exercises 1730, convert each metric weight to...Ch. 9.3 - For Exercises 1730, convert each metric weight to...Ch. 9.3 - For Exercises 1730, convert each metric weight to...Ch. 9.3 - For Exercises 1730, convert each metric weight to...Ch. 9.3 - For Exercises 1730, convert each metric weight to...Ch. 9.3 - For Exercises 1730, convert each metric weight to...Ch. 9.3 - For Exercises 1730, convert each metric weight to...Ch. 9.3 - For Exercises 1730, convert each metric weight to...Ch. 9.3 - For Exercises 1730, convert each metric weight to...Ch. 9.3 - For Exercises 1730, convert each metric weight to...Ch. 9.3 - For Exercises 1730, convert each metric weight to...Ch. 9.3 - For Exercises 3146, convert each amount to the...Ch. 9.3 - For Exercises 3146, convert each amount to the...Ch. 9.3 - For Exercises 3146, convert each amount to the...Ch. 9.3 - For Exercises 3146, convert each amount to the...Ch. 9.3 - For Exercises 3146, convert each amount to the...Ch. 9.3 - For Exercises 3146, convert each amount to the...Ch. 9.3 - For Exercises 3146, convert each amount to the...Ch. 9.3 - For Exercises 3146, convert each amount to the...Ch. 9.3 - For Exercises 3146, convert each amount to the...Ch. 9.3 - For Exercises 3146, convert each amount to the...Ch. 9.3 - For Exercises 3146, convert each amount to the...Ch. 9.3 - For Exercises 3146, convert each amount to the...Ch. 9.3 - For Exercises 3146, convert each amount to the...Ch. 9.3 - For Exercises 3146, convert each amount to the...Ch. 9.3 - For Exercises 3146, convert each amount to the...Ch. 9.3 - For Exercises 3146, convert each amount to the...Ch. 9.3 - For Exercises 4752, convert each Celsius...Ch. 9.3 - For Exercises 4752, convert each Celsius...Ch. 9.3 - For Exercises 4752, convert each Celsius...Ch. 9.3 - For Exercises 4752, convert each Celsius...Ch. 9.3 - For Exercises 4752, convert each Celsius...Ch. 9.3 - For Exercises 4752, convert each Celsius...Ch. 9.3 - For Exercises 5358, convert each Fahrenheit...Ch. 9.3 - Prob. 54ECh. 9.3 - Prob. 55ECh. 9.3 - For Exercises 5358, convert each Fahrenheit...Ch. 9.3 - Prob. 57ECh. 9.3 - Prob. 58ECh. 9.3 - Prob. 59ECh. 9.3 - Prob. 60ECh. 9.3 - Prob. 61ECh. 9.3 - Prob. 62ECh. 9.3 - Prob. 63ECh. 9.3 - Prob. 64ECh. 9.3 - When Cindy and Juan are informed that their new...Ch. 9.3 - Prob. 66ECh. 9.3 - Prob. 67ECh. 9.3 - Prob. 68ECh. 9.3 - Prob. 69ECh. 9.3 - For a chicken Marsala recipe, Janine needed 24 oz...Ch. 9.3 - Prob. 71ECh. 9.3 - Prob. 72ECh. 9.3 - Prob. 73ECh. 9.3 - Prob. 74ECh. 9.3 - Prob. 75ECh. 9.3 - While building a new playground at the city...Ch. 9.3 - Prob. 77ECh. 9.3 - During a dinner at Outback Steakhouse, a family of...Ch. 9.3 - An elevator says the maximum capacity is 1,000 kg....Ch. 9.3 - Prob. 80ECh. 9.3 - If the temperature goes down by 7 degrees Celsius...Ch. 9.3 - Between 8 A.M. and noon, the temperature rose by...Ch. 9.3 - Prob. 83ECh. 9.3 - A 1.7-ton truck crosses the border into Canada....Ch. 9.3 - Prob. 85ECh. 9.3 - Prob. 86ECh. 9.3 - Prob. 87ECh. 9.3 - Prob. 88ECh. 9.3 - (a) The bar graph shows the average monthly high...Ch. 9.3 - Australia is one of the worlds leading producers...Ch. 9.3 - Prob. 95ECh. 9.3 - Prob. 96ECh. 9.3 - Prob. 97ECh. 9.3 - Prob. 98ECh. 9 - For Exercises 116, convert each of the following...Ch. 9 - Prob. 2RECh. 9 - Prob. 3RECh. 9 - Prob. 4RECh. 9 - Prob. 5RECh. 9 - Prob. 6RECh. 9 - Prob. 7RECh. 9 - Prob. 8RECh. 9 - Prob. 9RECh. 9 - Prob. 10RECh. 9 - Prob. 11RECh. 9 - Prob. 12RECh. 9 - Prob. 13RECh. 9 - Prob. 14RECh. 9 - Prob. 15RECh. 9 - For Exercises 116, convert each of the following...Ch. 9 - Prob. 17RECh. 9 - Prob. 18RECh. 9 - Prob. 19RECh. 9 - Prob. 20RECh. 9 - Prob. 21RECh. 9 - Prob. 22RECh. 9 - Prob. 23RECh. 9 - Prob. 24RECh. 9 - Prob. 25RECh. 9 - Prob. 26RECh. 9 - Prob. 27RECh. 9 - Prob. 28RECh. 9 - Prob. 29RECh. 9 - Prob. 30RECh. 9 - Prob. 31RECh. 9 - Prob. 32RECh. 9 - For Exercises 2341, convert each of the following...Ch. 9 - Prob. 34RECh. 9 - Prob. 35RECh. 9 - Prob. 36RECh. 9 - Prob. 37RECh. 9 - Prob. 38RECh. 9 - Prob. 39RECh. 9 - Prob. 40RECh. 9 - Prob. 41RECh. 9 - Prob. 42RECh. 9 - Prob. 43RECh. 9 - Prob. 44RECh. 9 - Prob. 45RECh. 9 - Prob. 46RECh. 9 - Prob. 47RECh. 9 - Prob. 48RECh. 9 - Prob. 49RECh. 9 - Prob. 50RECh. 9 - Prob. 51RECh. 9 - Prob. 52RECh. 9 - Prob. 53RECh. 9 - Prob. 54RECh. 9 - Prob. 55RECh. 9 - Prob. 56RECh. 9 - Prob. 57RECh. 9 - Prob. 58RECh. 9 - Prob. 59RECh. 9 - Prob. 60RECh. 9 - For Exercises 4962, convert each of the following...Ch. 9 - Prob. 62RECh. 9 - Prob. 63RECh. 9 - Prob. 64RECh. 9 - Prob. 65RECh. 9 - Prob. 66RECh. 9 - Prob. 67RECh. 9 - Prob. 68RECh. 9 - How many pounds is a baby who weighs 3,200 g?Ch. 9 - Heinrichs temperature is 38.5C. A person is...Ch. 9 - Prob. 71RECh. 9 - Prob. 72RECh. 9 - Prob. 73RECh. 9 - Prob. 1CTCh. 9 - Prob. 2CTCh. 9 - Prob. 3CTCh. 9 - Prob. 4CTCh. 9 - Prob. 5CTCh. 9 - Prob. 6CTCh. 9 - Prob. 7CTCh. 9 - Prob. 8CTCh. 9 - Prob. 9CTCh. 9 - Prob. 10CTCh. 9 - Prob. 11CTCh. 9 - For Exercises 121, convert each of the following:...Ch. 9 - Prob. 13CTCh. 9 - Prob. 14CTCh. 9 - Prob. 15CTCh. 9 - Prob. 16CTCh. 9 - Prob. 17CTCh. 9 - Prob. 18CTCh. 9 - Prob. 19CTCh. 9 - Prob. 20CTCh. 9 - Prob. 21CTCh. 9 - Prob. 22CTCh. 9 - If a runner averages 5.9 feet per second, how long...Ch. 9 - Prob. 24CTCh. 9 - Prob. 25CTCh. 9 - Prob. 26CTCh. 9 - Prob. 27CTCh. 9 - Prob. 28CTCh. 9 - Prob. 29CTCh. 9 - Prob. 30CTCh. 9 - A young family is looking to buy a house and...Ch. 9 - Prob. 32CTCh. 9 - Prob. 33CT
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