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itially, two large tanks A and B each hold 100 gallons of

A First Course in Differential Equations with Modeling Applications | 10th Edition | ISBN: 9781111827052 | Authors: Dennis G. Zill ISBN: 9781111827052 44

Solution for problem 12RP Chapter 3.R

A First Course in Differential Equations with Modeling Applications | 10th Edition

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A First Course in Differential Equations with Modeling Applications | 10th Edition | ISBN: 9781111827052 | Authors: Dennis G. Zill

A First Course in Differential Equations with Modeling Applications | 10th Edition

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Problem 12RP

PROBLEM 12RP

Initially, two large tanks A and B each hold 100 gallons of brine. The well-stirred liquid is pumped between the tanks as shown in Figure 3.R.3. Use the information given in the figure to construct a mathematical model for the number of pounds of salt x1(t) and x2(t) at time t in tanks A and B, respectively.

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Anth 120 3/21/16 Plants domesticated in SW Asia ­Wheat ­Barley ­lentils ­flax ­chickpeas ­figs Animals domesticated in SW Asia ­Sheep ­Goats ­Cow ­Pig Why Domestication ­Onset of younger dryas (cold snap) ­Overhunted wild animal populations which created a less sufficient food source Who Domesticated ­Women had close relationship with plants, women tend to plants/actually plant ­Men help prepare the land and harvest, have a closer relationship with animal domestication SITES Jericho (10,000­7,000 BCE)  Evidence of food storage  Mud brick huts  Large wall around community – signs of communal labor  Ancestor skulls: plastered over with mud, shells put into eye sockets – this shows the worship of ancestors tying community to sedentary lifestyle, not just farming Abu Hureyra (10,500­6,000 BCE)  Mud brick houses, sometimes with red designs – shows large investment in homes  Sheep and Goat turned into main meat source rather than wild gazelle  Sigs of cow and pig domestication as well Cayonu Tepesi (8,500 BCE)  Cells for the dead  Animal and human blood found probably for sacrifice/ritualistic practices Gobekli Tepe (9,600 BCE)  Stone pillars at center, at least 8 feet high, carved with wild animals and believed to be used for ritualistic practice  Shows large investment in ritualistic practices Catal Hoyuk (7,500­6,000 BCE)  Signs of obsidian trade  Paintings and ritual items within homes, no communal spaces – came in contact with ritual practice throughout daily activities  Figurines Ganj Dareh (8,000­6,600 BCE)  Herding goat and cattle  Mud brick houses Jarmo (7,000 BCE)  25 mud brick homes with courtyards  clay ovens suggests baking of bread and other foods  80% of food was from domesticated sources  Signs of an exchange network suggested from obsidian, turquoise, and other artifacts  Use of clay tokens Ali Kosh (7,500 BCE)  Small village separated by courtyards  Herding practices  Cultivated wheat and barley  Caught fish – located near river system  Signs of irrigation systems to water plants/crops

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Chapter 3.R, Problem 12RP is Solved
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Textbook: A First Course in Differential Equations with Modeling Applications
Edition: 10
Author: Dennis G. Zill
ISBN: 9781111827052

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itially, two large tanks A and B each hold 100 gallons of