Consider the following network of one-way roads, where A, B, C and D are intersections. The arrows indicate the direction of the roads. The numbers and variables indicate the number of vehicles that pass through a road per minute. 19 B 22 - A 15 I3 D 12 The row-reduced echelon form of the matrix representing this network is 1 0 0 -1 -19 1 1 1 34 1 1 1 22 0 0 If road AC is closed, what is the minimum flow along road DC? a) 12 O b) 15 Oc) 22 O d) 34 e) 10 O f) 19

Algebra and Trigonometry (6th Edition)
6th Edition
ISBN:9780134463216
Author:Robert F. Blitzer
Publisher:Robert F. Blitzer
ChapterP: Prerequisites: Fundamental Concepts Of Algebra
Section: Chapter Questions
Problem 1MCCP: In Exercises 1-25, simplify the given expression or perform the indicated operation (and simplify,...
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Question
8
Consider the following network of one-way roads, where A, B, C and D are
intersections. The arrows indicate the direction of the roads. The numbers and
variables
Xị
indicate the number of vehicles that pass through a road per minute.
19
22
- A
15
I3
D
12
The row-reduced echelon form of the matrix representing this network is
1
0 0
-1
-19
1
1
1
34
1
1
1
22
0 0
If road AC is closed, what is the minimum flow along road DC?
a) 12
O b) 15
O c) 22
O d) 34
e) 10
O f) 19
Transcribed Image Text:Consider the following network of one-way roads, where A, B, C and D are intersections. The arrows indicate the direction of the roads. The numbers and variables Xị indicate the number of vehicles that pass through a road per minute. 19 22 - A 15 I3 D 12 The row-reduced echelon form of the matrix representing this network is 1 0 0 -1 -19 1 1 1 34 1 1 1 22 0 0 If road AC is closed, what is the minimum flow along road DC? a) 12 O b) 15 O c) 22 O d) 34 e) 10 O f) 19
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