Mathematics: A Practical Odyssey
8th Edition
ISBN: 9781305104174
Author: David B. Johnson, Thomas A. Mowry
Publisher: Cengage Learning
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Textbook Question
Chapter 9.5, Problem 10E
Exercises 8-14 involve the information in Figure 9.114 on installing a drip irrigation system.
How many workers would it take to finish the installation within that completion time?
| Task | Length | Dependencies |
| a. Determine water needs of plants |
|
|
| b Lay out system |
|
a |
| c. Determine length of tubing needed |
|
a, b |
| d. Determine number and type of emitters needed |
|
a, b |
| e. Determine location of control panel |
|
|
| f. Determine number of separately controlled lines |
|
a, b, d |
| g. Buy emitters, tubing, valves, control panel, wire |
|
a, b, d, e, f |
| h. Get wire from control panel to valves |
|
e, f, g |
| i. Put tubing in place |
|
b, c, f, g |
| j. Cut tubing |
|
g, i |
| k. Connect cut sections of tubing |
|
g, j |
| l. Install emitters |
|
d, g, i, j, k |
| m. Test system |
|
k, l |
Figure 9.114 Installing a drip irrigation system.
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Students have asked these similar questions
Sulaiman is planning to take his car for regular service. The work required in servicing is divided into several activities and represented in the below table along with the time taken for each task:
ACTIVITY TASK
Activitysymbol
iMMEDIATEPREDECESSORS
Duration (min)
Open the petrol tank cap
A
-
2
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B
A
14
Close the petrol tank cap
C
B
10
Open bonnet, check and add engineoil (Paid service)
D
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19
Check radiator coolant, Checkbattery, Close bonnet
E
D
12
Clean the wind shield, Check airpressure in tires
F
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12
Prepare bill
G
B,E
11
Collect payment
H
G
15
Draw the network diagram and find the earliest start and latest finish time of all the activities. Also determine thetotal project time for which Sulaiman will stay at the service station and list out the critical activities.
Dave Fletcher was able to determine the activity times for constructing his laser scanning machine. Fletcher would like to determine ES, EF,
LS, LF, and slack for each activity. The total project completion time and the critical path should also be determined. Here are the activity
times:
Activity
A
B
C
D
Time
(weeks)
5
8
3
2
Immediate.
Predecessor(s)
Dave's earliest start (ES) and earliest finish (EF) are:
A
A
Activity
Activity
E
F
G
H
ES
Time
(weeks)
5
EF
5
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10
6
Immediate
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B
B
C, E
D, F
Please answer the following questions with full working:
Chapter 9 Solutions
Mathematics: A Practical Odyssey
Ch. 9.1 - In Exercises 1 3, use the following information:...Ch. 9.1 - In Exercises 1 3, use the following information:...Ch. 9.1 - Prob. 3ECh. 9.1 - Prob. 4ECh. 9.1 - Prob. 5ECh. 9.1 - Prob. 6ECh. 9.1 - In exercise 7-10, determine the number of...Ch. 9.1 - Prob. 8ECh. 9.1 - In exercise 7-10, determine the number of...Ch. 9.1 - Prob. 10E
Ch. 9.1 - Prob. 11ECh. 9.1 - a. Determine the number of vertices, edges and...Ch. 9.1 - Prob. 13ECh. 9.1 - Prob. 14ECh. 9.1 - a. Why do the two diagrams in Figure 9.10...Ch. 9.1 - Prob. 16ECh. 9.1 - Prob. 17ECh. 9.1 - Prob. 18ECh. 9.1 - Prob. 19ECh. 9.1 - Prob. 20ECh. 9.2 - In Exercise 1-6, do the following: a. Find two...Ch. 9.2 - Prob. 2ECh. 9.2 - Prob. 3ECh. 9.2 - Prob. 4ECh. 9.2 - Prob. 5ECh. 9.2 - Prob. 6ECh. 9.2 - Exercise 7-12, can be done as homework problem or...Ch. 9.2 - Exercise 7-12, can be done as homework problem or...Ch. 9.2 - Prob. 9ECh. 9.2 - Prob. 10ECh. 9.2 - Exercise 7-12, can be done as homework problem or...Ch. 9.2 - Exercise 7-12, can be done as homework problem or...Ch. 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 - 22. Once a month, the utility company sends an...Ch. 9.2 - Prob. 23ECh. 9.2 - Prob. 24ECh. 9.2 - Figure shows a map of New Yorks cities and bridges...Ch. 9.2 - Prob. 26ECh. 9.2 - Prob. 27ECh. 9.2 - Prob. 28ECh. 9.2 - Figure 9.7 on page 673 shows a map of the BART Bay...Ch. 9.2 - Prob. 30ECh. 9.2 - Prob. 31ECh. 9.2 - Prob. 32ECh. 9.2 - Prob. 35ECh. 9.3 - Prob. 1ECh. 9.3 - Prob. 2ECh. 9.3 - Prob. 3ECh. 9.3 - Exercise 1-4, use the flight costs shown in...Ch. 9.3 - Prob. 5ECh. 9.3 - Exercises 5-12 use the FedEx travel times shown in...Ch. 9.3 - Prob. 7ECh. 9.3 - Prob. 8ECh. 9.3 - Prob. 9ECh. 9.3 - Prob. 10ECh. 9.3 - Prob. 11ECh. 9.3 - Prob. 12ECh. 9.3 - Prob. 13ECh. 9.3 - Prob. 14ECh. 9.3 - Prob. 15ECh. 9.3 - Use the following information in Exercises 13-22....Ch. 9.3 - Prob. 17ECh. 9.3 - Prob. 18ECh. 9.3 - Prob. 19ECh. 9.3 - Prob. 20ECh. 9.3 - Prob. 21ECh. 9.3 - Prob. 22ECh. 9.3 - Prob. 23ECh. 9.3 - Prob. 24ECh. 9.3 - Use the information in Figure 9.55 and the...Ch. 9.3 - Prob. 26ECh. 9.3 - Use the information in Figure 9.55 and the...Ch. 9.3 - Prob. 28ECh. 9.3 - Prob. 29ECh. 9.3 - Prob. 30ECh. 9.3 - Prob. 31ECh. 9.4 - Prob. 1ECh. 9.4 - Prob. 2ECh. 9.4 - Prob. 3ECh. 9.4 - Prob. 4ECh. 9.4 - Prob. 5ECh. 9.4 - Prob. 6ECh. 9.4 - Prob. 7ECh. 9.4 - Prob. 8ECh. 9.4 - Prob. 9ECh. 9.4 - Prob. 10ECh. 9.4 - Prob. 11ECh. 9.4 - Prob. 12ECh. 9.4 - Prob. 13ECh. 9.4 - Prob. 14ECh. 9.4 - Prob. 15ECh. 9.4 - Prob. 16ECh. 9.4 - Prob. 17ECh. 9.4 - Prob. 18ECh. 9.4 - Prob. 19ECh. 9.4 - Prob. 20ECh. 9.4 - Prob. 21ECh. 9.4 - Prob. 22ECh. 9.4 - Prob. 23ECh. 9.4 - Prob. 24ECh. 9.4 - Prob. 25ECh. 9.4 - Prob. 26ECh. 9.4 - Prob. 27ECh. 9.4 - Prob. 28ECh. 9.4 - Prob. 29ECh. 9.4 - Prob. 30ECh. 9.4 - Prob. 31ECh. 9.4 - Prob. 32ECh. 9.4 - Prob. 33ECh. 9.4 - Prob. 34ECh. 9.4 - Prob. 35ECh. 9.4 - Prob. 36ECh. 9.4 - Prob. 37ECh. 9.4 - Prob. 38ECh. 9.4 - Prob. 39ECh. 9.4 - Prob. 40ECh. 9.4 - Prob. 41ECh. 9.4 - Prob. 42ECh. 9.4 - Prob. 43ECh. 9.4 - Prob. 44ECh. 9.4 - Prob. 45ECh. 9.4 - Prob. 46ECh. 9.4 - Prob. 47ECh. 9.4 - Prob. 48ECh. 9.4 - Prob. 49ECh. 9.4 - Prob. 50ECh. 9.4 - Prob. 51ECh. 9.4 - Prob. 52ECh. 9.4 - Prob. 53ECh. 9.4 - Prob. 54ECh. 9.4 - Prob. 55ECh. 9.4 - Prob. 56ECh. 9.4 - Prob. 57ECh. 9.4 - Prob. 58ECh. 9.4 - Prob. 59ECh. 9.4 - Prob. 60ECh. 9.5 - Prob. 1ECh. 9.5 - Prob. 2ECh. 9.5 - Prob. 3ECh. 9.5 - Prob. 4ECh. 9.5 - Prob. 5ECh. 9.5 - Prob. 6ECh. 9.5 - Prob. 7ECh. 9.5 - Exercises 8-14 involve the information in Figure...Ch. 9.5 - Prob. 9ECh. 9.5 - Exercises 8-14 involve the information in Figure...Ch. 9.5 - Prob. 11ECh. 9.5 - Exercises 8-14 involve the information in Figure...Ch. 9.5 - Prob. 13ECh. 9.5 - Prob. 14ECh. 9.5 - Exercises 15-21 involve the information in Figure...Ch. 9.5 - Prob. 16ECh. 9.5 - Prob. 17ECh. 9.5 - Prob. 18ECh. 9.5 - Prob. 19ECh. 9.5 - Prob. 20ECh. 9.5 - Prob. 21ECh. 9.5 - Prob. 22ECh. 9.5 - Prob. 23ECh. 9.5 - Prob. 24ECh. 9.5 - Prob. 25ECh. 9.5 - Prob. 26ECh. 9.5 - Prob. 27ECh. 9.5 - Prob. 28ECh. 9.5 - Prob. 29ECh. 9.5 - Prob. 30ECh. 9.5 - Prob. 31ECh. 9.5 - Prob. 32ECh. 9.5 - Prob. 33ECh. 9.5 - Prob. 34ECh. 9.5 - Prob. 35ECh. 9.CR - In Exercises 1-6, do the following: a. Determine...Ch. 9.CR - Prob. 2CRCh. 9.CR - Prob. 3CRCh. 9.CR - Prob. 4CRCh. 9.CR - Prob. 5CRCh. 9.CR - Prob. 6CRCh. 9.CR - Prob. 7CRCh. 9.CR - Prob. 8CRCh. 9.CR - Prob. 9CRCh. 9.CR - Prob. 10CRCh. 9.CR - Prob. 11CRCh. 9.CR - Prob. 12CRCh. 9.CR - Prob. 13CRCh. 9.CR - Prob. 14CRCh. 9.CR - Prob. 15CRCh. 9.CR - Prob. 16CRCh. 9.CR - Prob. 17CRCh. 9.CR - Prob. 18CRCh. 9.CR - Prob. 19CRCh. 9.CR - Prob. 20CRCh. 9.CR - Prob. 21CRCh. 9.CR - Prob. 22CRCh. 9.CR - Prob. 23CRCh. 9.CR - Prob. 24CRCh. 9.CR - Prob. 25CRCh. 9.CR - Prob. 26CRCh. 9.CR - Exercises 2531 use the flight costs shown in...Ch. 9.CR - Exercises 2531 use the flight costs shown in...Ch. 9.CR - Prob. 29CRCh. 9.CR - Prob. 30CRCh. 9.CR - You live in Chicago, and you need to visit New...Ch. 9.CR - Prob. 32CRCh. 9.CR - Prob. 33CRCh. 9.CR - Prob. 34CRCh. 9.CR - Prob. 35CRCh. 9.CR - Prob. 36CRCh. 9.CR - Prob. 37CRCh. 9.CR - Prob. 38CRCh. 9.CR - Prob. 39CRCh. 9.CR - Prob. 40CRCh. 9.CR - Prob. 41CRCh. 9.CR - Prob. 42CRCh. 9.CR - Prob. 43CRCh. 9.CR - Prob. 44CRCh. 9.CR - Prob. 45CRCh. 9.CR - Prob. 46CRCh. 9.CR - Prob. 47CRCh. 9.CR - Prob. 48CRCh. 9.CR - Prob. 49CRCh. 9.CR - Prob. 50CRCh. 9.CR - Prob. 51CRCh. 9.CR - Prob. 52CRCh. 9.CR - Prob. 53CRCh. 9.CR - Prob. 54CRCh. 9.CR - Prob. 55CRCh. 9.CR - Prob. 56CRCh. 9.CR - Prob. 57CRCh. 9.CR - Prob. 58CRCh. 9.CR - Prob. 59CRCh. 9.CR - Prob. 60CRCh. 9.CR - Prob. 61CRCh. 9.CR - Prob. 62CRCh. 9.CR - Prob. 63CRCh. 9.CR - Prob. 64CR
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