EBK COLLEGE MATHEMATICS FOR TRADES AND
EBK COLLEGE MATHEMATICS FOR TRADES AND
10th Edition
ISBN: 8220106960301
Author: Hobbs
Publisher: PEARSON
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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 3, Problem 21PT
To determine

The interest earned on the investment of $15,000 at 14% per year for 3months.

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You manage a chemical company with 2 warehouses. The following quantities of Important Chemical A have arrived from an international supplier at 3 different ports: Chemical Available (L) Port 1 Port 2 Port 3 400 110 100 The following amounts of Important Chemical A are required at your warehouses: Warehouse 1 Warehouse 2 Chemical Required (L) 380 230 The cost in £ to ship 1L of chemical from each port to each warehouse is as follows: Warehouse 1 Warehouse 2 Port 1 £10 £45 Port 2 £20 £28 Port 3 £13 £11 (a) You want to know how to send these shipments as cheaply as possible. For- mulate this as a linear program (you do not need to formulate it in standard inequality form) indicating what each variable represents.
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Suppose we have a linear program in standard equation form maximize c'x subject to Ax=b, x≥ 0. and suppose u, v, and w are all optimal solutions to this linear program. (a) Prove that zu+v+w is an optimal solution. (b) If you try to adapt your proof from part (a) to prove that that u+v+w is an optimal solution, say exactly which part(s) of the proof go wrong. (c) If you try to adapt your proof from part (a) to prove that u+v-w is an optimal solution, say exactly which part(s) of the proof go wrong.

Chapter 3 Solutions

EBK COLLEGE MATHEMATICS FOR TRADES AND

Ch. 3.1 - Mentally multiply 0.3 times 100. Ch. 3.1 - Prob. 2LCCh. 3.1 - Prob. 1ECh. 3.1 - Prob. 2ECh. 3.1 - Prob. 3ECh. 3.1 - Prob. 4ECh. 3.1 - Prob. 5ECh. 3.1 - Prob. 6ECh. 3.1 - Prob. 7ECh. 3.1 - Change the numbers to their percent equivalents....
Ch. 3.1 - Prob. 9ECh. 3.1 - Prob. 10ECh. 3.1 - Prob. 11ECh. 3.1 - Prob. 12ECh. 3.1 - Prob. 13ECh. 3.1 - Change the numbers to their percent equivalents....Ch. 3.1 - Prob. 15ECh. 3.1 - Prob. 16ECh. 3.1 - Prob. 17ECh. 3.1 - Prob. 18ECh. 3.1 - Prob. 19ECh. 3.1 - Prob. 20ECh. 3.1 - Prob. 21ECh. 3.1 - Prob. 22ECh. 3.1 - Prob. 23ECh. 3.1 - Prob. 24ECh. 3.1 - Prob. 25ECh. 3.1 - Set Example 3 Change to decimal equivalents. Round...Ch. 3.1 - Prob. 27ECh. 3.1 - Prob. 28ECh. 3.1 - Prob. 29ECh. 3.1 - Prob. 30ECh. 3.1 - Prob. 31ECh. 3.1 - Prob. 32ECh. 3.1 - Prob. 33ECh. 3.1 - Prob. 34ECh. 3.1 - Prob. 35ECh. 3.1 - Prob. 36ECh. 3.1 - Prob. 37ECh. 3.1 - Prob. 38ECh. 3.1 - Prob. 39ECh. 3.1 - Change to mixed-decimal equivalents. 425%Ch. 3.1 - Prob. 41ECh. 3.1 - Prob. 42ECh. 3.1 - Prob. 43ECh. 3.1 - Prob. 44ECh. 3.1 - Prob. 45ECh. 3.1 - Prob. 46ECh. 3.1 - Prob. 47ECh. 3.1 - Prob. 48ECh. 3.1 - Prob. 49ECh. 3.1 - Prob. 50ECh. 3.1 - Prob. 51ECh. 3.1 - Prob. 52ECh. 3.1 - Prob. 53ECh. 3.1 - See Example 4. Change to fractional equivalents....Ch. 3.1 - Prob. 55ECh. 3.1 - Prob. 56ECh. 3.1 - Prob. 57ECh. 3.1 - Prob. 58ECh. 3.1 - Prob. 59ECh. 3.1 - Prob. 60ECh. 3.1 - Prob. 61ECh. 3.1 - Prob. 62ECh. 3.1 - Prob. 63ECh. 3.1 - Prob. 64ECh. 3.1 - Prob. 65ECh. 3.1 - Prob. 66ECh. 3.1 - Prob. 67ECh. 3.1 - Prob. 68ECh. 3.1 - Prob. 69ECh. 3.1 - Prob. 70ECh. 3.1 - Statistics from FedStats. a governmental website,...Ch. 3.2 - Prob. 1LCCh. 3.2 - Prob. 2LCCh. 3.2 - Prob. 3LCCh. 3.2 - Prob. 1ECh. 3.2 - Prob. 2ECh. 3.2 - Prob. 3ECh. 3.2 - Prob. 4ECh. 3.2 - Prob. 5ECh. 3.2 - Prob. 6ECh. 3.2 - Prob. 7ECh. 3.2 - Prob. 8ECh. 3.2 - Prob. 9ECh. 3.2 - Prob. 10ECh. 3.2 - Prob. 11ECh. 3.2 - Prob. 12ECh. 3.2 - Prob. 13ECh. 3.2 - Prob. 14ECh. 3.2 - Prob. 15ECh. 3.2 - Prob. 16ECh. 3.2 - Prob. 17ECh. 3.2 - Prob. 18ECh. 3.2 - Solve using the percentage formula. See Example 2....Ch. 3.2 - Prob. 20ECh. 3.2 - Prob. 21ECh. 3.2 - Prob. 22ECh. 3.2 - Prob. 23ECh. 3.2 - Prob. 24ECh. 3.2 - Prob. 25ECh. 3.2 - Prob. 26ECh. 3.2 - Prob. 27ECh. 3.2 - Prob. 28ECh. 3.2 - Prob. 29ECh. 3.2 - See Example 5. The Drammelonnie Department Store...Ch. 3.2 - Prob. 31ECh. 3.2 - Prob. 32ECh. 3.2 - Prob. 33ECh. 3.2 - See Example 6. A receipt from Walmart in Memphis...Ch. 3.2 - Prob. 35ECh. 3.2 - Prob. 36ECh. 3.2 - Prob. 37ECh. 3.2 - Prob. 38ECh. 3.2 - Prob. 39ECh. 3.2 - Prob. 40ECh. 3.2 - Prob. 41ECh. 3.2 - Prob. 42ECh. 3.2 - Prob. 43ECh. 3.2 - Prob. 44ECh. 3.2 - Prob. 45ECh. 3.2 - Prob. 46ECh. 3.2 - Prob. 47ECh. 3.2 - Prob. 48ECh. 3.2 - Prob. 49ECh. 3.2 - Prob. 50ECh. 3.2 - Prob. 51ECh. 3.2 - Prob. 52ECh. 3.2 - Prob. 53ECh. 3.2 - Prob. 54ECh. 3.2 - Prob. 55ECh. 3.2 - Prob. 56ECh. 3.2 - Prob. 57ECh. 3.2 - Prob. 58ECh. 3.2 - Prob. 59ECh. 3.2 - Prob. 60ECh. 3.2 - Prob. 61ECh. 3.2 - Prob. 62ECh. 3.2 - Prob. 63ECh. 3.2 - Prob. 64ECh. 3.2 - Prob. 65ECh. 3.2 - Prob. 66ECh. 3.2 - Prob. 67ECh. 3.2 - Prob. 68ECh. 3.2 - Prob. 69ECh. 3.2 - Prob. 70ECh. 3.2 - Prob. 71ECh. 3.2 - Prob. 72ECh. 3.2 - Prob. 73ECh. 3.2 - Prob. 74ECh. 3.2 - Prob. 75ECh. 3.2 - Prob. 76ECh. 3.2 - Prob. 77ECh. 3.2 - Prob. 78ECh. 3.2 - Prob. 79ECh. 3.2 - Prob. 80ECh. 3.2 - Prob. 81ECh. 3.2 - Prob. 82ECh. 3.2 - Prob. 83ECh. 3.2 - Prob. 84ECh. 3.2 - Prob. 85ECh. 3.2 - Prob. 86ECh. 3.2 - Prob. 87ECh. 3.2 - Prob. 88ECh. 3.2 - Prob. 89ECh. 3.2 - Prob. 90ECh. 3.2 - Prob. 91ECh. 3.2 - Prob. 92ECh. 3.2 - Prob. 93ECh. 3.2 - Prob. 94ECh. 3.2 - Prob. 95ECh. 3.2 - Prob. 96ECh. 3.2 - Prob. 97ECh. 3.2 - Prob. 98ECh. 3.2 - Prob. 99ECh. 3.2 - Prob. 100ECh. 3.2 - Prob. 101ECh. 3.2 - Prob. 102ECh. 3.2 - Prob. 103ECh. 3.2 - Prob. 104ECh. 3.2 - Prob. 105ECh. 3.2 - Prob. 106ECh. 3.2 - Prob. 107ECh. 3.2 - Prob. 108ECh. 3.2 - Prob. 109ECh. 3.2 - Prob. 110ECh. 3.2 - Prob. 111ECh. 3.2 - Prob. 112ECh. 3.2 - Prob. 113ECh. 3.2 - Prob. 114ECh. 3.2 - Home heat loss through poor-fitting doors and...Ch. 3.2 - Prob. 116ECh. 3.2 - Prob. 117ECh. 3.2 - Prob. 118ECh. 3.2 - Prob. 119ECh. 3.2 - Prob. 120ECh. 3.3 - Prob. 1LCCh. 3.3 - Prob. 2LCCh. 3.3 - Prob. 1ECh. 3.3 - Prob. 2ECh. 3.3 - See Example 3. Find the amount of increase if 432...Ch. 3.3 - Prob. 4ECh. 3.3 - See Example 3. Jobs as athletic trainers totaled...Ch. 3.3 - See Example 3. In 2010, the number of jobs as...Ch. 3.3 - See Example 4. Find the amount of decrease if 68...Ch. 3.3 - See Example 4. If 135 is decreased by 75%, what is...Ch. 3.3 - See Example 5. If 17% extra flooring is needed to...Ch. 3.3 - See Example 5. A contractor needs 1,650 board feet...Ch. 3.3 - See Example 5. When making an estimate on a job, a...Ch. 3.3 - See Example 5. A construction company requires...Ch. 3.3 - See Example 5. Ciara Walker was earning $49,860...Ch. 3.3 - See Example 5. LaTreas Walker received a 3% salary...Ch. 3.3 - See Example 6. Steel rods shrink 10% when cooled...Ch. 3.3 - See Example 6. Rock must be removed from a highway...Ch. 3.3 - See Example 6. David Dawson earned $4,290 but paid...Ch. 3.3 - Megan Anders purchased a swimsuit that was priced...Ch. 3.3 - Prob. 19ECh. 3.3 - Prob. 20ECh. 3.3 - Prob. 21ECh. 3.3 - Prob. 22ECh. 3.3 - Find the complement of 86.3%. Ch. 3.3 - Prob. 24ECh. 3.3 - Prob. 25ECh. 3.3 - Prob. 26ECh. 3.3 - Prob. 27ECh. 3.3 - Prob. 28ECh. 3.3 - Prob. 29ECh. 3.3 - Prob. 30ECh. 3.3 - Solve. See Example 10. A chicken farmer bought...Ch. 3.3 - Solve. See Example 10. An electrician recorded...Ch. 3.3 - Prob. 33ECh. 3.3 - Solve. See Example 10. The cost of No. 1 pine...Ch. 3.3 - Solve. See Example 10. A month’s supply of...Ch. 3.3 - See Example 11. A contractor ordered 10.5 yd3 of...Ch. 3.3 - See Example 11. An engine that has a 4% loss of...Ch. 3.3 - See Example 11. A shop manager records a 14% loss...Ch. 3.3 - See Example 11. Steel bars shrink 10% when cooled...Ch. 3.3 - See Example 11. A 141-hp output is required for an...Ch. 3 - Change to percent equivalents. 0.7Ch. 3 - Change to percent equivalents. 0.35Ch. 3 - Prob. 3RECh. 3 - Prob. 4RECh. 3 - Prob. 5RECh. 3 - Prob. 6RECh. 3 - Prob. 7RECh. 3 - Prob. 8RECh. 3 - Prob. 9RECh. 3 - Prob. 10RECh. 3 - Prob. 11RECh. 3 - Prob. 12RECh. 3 - Prob. 13RECh. 3 - Prob. 14RECh. 3 - Prob. 15RECh. 3 - Prob. 16RECh. 3 - Prob. 17RECh. 3 - Prob. 18RECh. 3 - Prob. 19RECh. 3 - Prob. 20RECh. 3 - Prob. 21RECh. 3 - Prob. 22RECh. 3 - Prob. 23RECh. 3 - Prob. 24RECh. 3 - Prob. 25RECh. 3 - Prob. 26RECh. 3 - Prob. 27RECh. 3 - Prob. 28RECh. 3 - Prob. 29RECh. 3 - Prob. 30RECh. 3 - Prob. 31RECh. 3 - Prob. 32RECh. 3 - Prob. 33RECh. 3 - Prob. 34RECh. 3 - Prob. 35RECh. 3 - Prob. 36RECh. 3 - Prob. 37RECh. 3 - Prob. 38RECh. 3 - Prob. 39RECh. 3 - Prob. 40RECh. 3 - Prob. 41RECh. 3 - Prob. 42RECh. 3 - Prob. 43RECh. 3 - Solve using the percentage formula. of 576 is...Ch. 3 - Prob. 45RECh. 3 - Prob. 46RECh. 3 - Prob. 47RECh. 3 - Prob. 48RECh. 3 - Prob. 49RECh. 3 - Prob. 50RECh. 3 - Prob. 51RECh. 3 - Prob. 52RECh. 3 - Prob. 53RECh. 3 - Prob. 54RECh. 3 - Solve using the percentage proportion. 24% of is...Ch. 3 - Solve using the percentage proportion. 7.56 is of...Ch. 3 - Prob. 57RECh. 3 - Prob. 58RECh. 3 - Prob. 59RECh. 3 - Prob. 60RECh. 3 - Prob. 61RECh. 3 - Prob. 62RECh. 3 - Prob. 63RECh. 3 - Prob. 64RECh. 3 - Prob. 65RECh. 3 - Prob. 66RECh. 3 - Prob. 67RECh. 3 - Prob. 68RECh. 3 - Prob. 69RECh. 3 - Prob. 70RECh. 3 - Prob. 71RECh. 3 - Prob. 72RECh. 3 - Prob. 73RECh. 3 - Prob. 74RECh. 3 - Prob. 75RECh. 3 - Prob. 76RECh. 3 - Prob. 77RECh. 3 - Prob. 78RECh. 3 - Prob. 79RECh. 3 - Prob. 80RECh. 3 - Prob. 81RECh. 3 - Prob. 82RECh. 3 - Prob. 83RECh. 3 - Prob. 84RECh. 3 - Prob. 85RECh. 3 - Prob. 86RECh. 3 - Prob. 87RECh. 3 - Prob. 88RECh. 3 - Prob. 89RECh. 3 - Prob. 90RECh. 3 - Prob. 91RECh. 3 - Prob. 92RECh. 3 - Prob. 93RECh. 3 - Prob. 94RECh. 3 - Prob. 95RECh. 3 - Prob. 96RECh. 3 - Prob. 97RECh. 3 - Prob. 98RECh. 3 - Prob. 99RECh. 3 - Prob. 100RECh. 3 - Prob. 101RECh. 3 - Prob. 102RECh. 3 - Prob. 103RECh. 3 - Prob. 104RECh. 3 - Prob. 105RECh. 3 - Prob. 106RECh. 3 - Prob. 107RECh. 3 - Prob. 108RECh. 3 - Prob. 109RECh. 3 - Prob. 110RECh. 3 - Find the complement of 92% Ch. 3 - A washing machine that sells for $389 is on sale...Ch. 3 - Prob. 113RECh. 3 - Prob. 114RECh. 3 - Prob. 115RECh. 3 - Prob. 116RECh. 3 - Prob. 117RECh. 3 - Prob. 118RECh. 3 - Prob. 119RECh. 3 - Prob. 120RECh. 3 - Prob. 121RECh. 3 - Prob. 122RECh. 3 - Prob. 123RECh. 3 - Prob. 124RECh. 3 - Prob. 125RECh. 3 - Prob. 126RECh. 3 - Prob. 127RECh. 3 - Prob. 128RECh. 3 - Prob. 129RECh. 3 - Prob. 130RECh. 3 - Prob. 131RECh. 3 - Prob. 132RECh. 3 - Prob. 1CACh. 3 - Prob. 2CACh. 3 - Prob. 3CACh. 3 - Prob. 4CACh. 3 - Prob. 5CACh. 3 - Prob. 6CACh. 3 - Prob. 7CACh. 3 - Prob. 8CACh. 3 - Prob. 9CACh. 3 - Prob. 10CACh. 3 - Prob. 11CACh. 3 - Prob. 12CACh. 3 - Prob. 13CACh. 3 - Prob. 14CACh. 3 - Prob. 15CACh. 3 - Prob. 1PTCh. 3 - Prob. 2PTCh. 3 - Prob. 3PTCh. 3 - Prob. 4PTCh. 3 - Prob. 5PTCh. 3 - Prob. 6PTCh. 3 - Prob. 7PTCh. 3 - Prob. 8PTCh. 3 - Prob. 9PTCh. 3 - Prob. 10PTCh. 3 - Prob. 11PTCh. 3 - Prob. 12PTCh. 3 - Prob. 13PTCh. 3 - Prob. 14PTCh. 3 - Prob. 15PTCh. 3 - Prob. 16PTCh. 3 - Prob. 17PTCh. 3 - Prob. 18PTCh. 3 - Prob. 19PTCh. 3 - Prob. 20PTCh. 3 - Prob. 21PTCh. 3 - Prob. 22PTCh. 3 - Prob. 23PTCh. 3 - Prob. 24PTCh. 3 - Prob. 25PTCh. 3 - Prob. 26PTCh. 3 - Prob. 27PTCh. 3 - Prob. 28PTCh. 3 - Prob. 29PTCh. 3 - Prob. 30PTCh. 3 - Prob. 31PTCh. 3 - Prob. 32PTCh. 3 - Prob. 1CPTCh. 3 - Prob. 2CPTCh. 3 - Prob. 3CPTCh. 3 - Prob. 4CPTCh. 3 - Prob. 5CPTCh. 3 - Prob. 6CPTCh. 3 - Prob. 7CPTCh. 3 - Prob. 8CPTCh. 3 - Prob. 9CPTCh. 3 - Prob. 10CPTCh. 3 - Prob. 11CPTCh. 3 - Prob. 12CPTCh. 3 - Prob. 13CPTCh. 3 - Prob. 14CPTCh. 3 - Prob. 15CPTCh. 3 - Prob. 16CPTCh. 3 - Prob. 17CPTCh. 3 - Prob. 18CPTCh. 3 - Prob. 19CPTCh. 3 - Prob. 20CPTCh. 3 - Prob. 21CPTCh. 3 - Prob. 22CPTCh. 3 - Prob. 23CPTCh. 3 - Prob. 24CPTCh. 3 - Prob. 25CPTCh. 3 - Prob. 26CPTCh. 3 - Prob. 27CPTCh. 3 - Prob. 28CPTCh. 3 - Prob. 29CPTCh. 3 - Prob. 30CPTCh. 3 - Prob. 31CPTCh. 3 - Prob. 32CPTCh. 3 - Prob. 33CPTCh. 3 - To calculate the percent of protein in pet food on...Ch. 3 - Prob. 35CPT
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