E. 2x-3y + z = 10 %3D y + 2z = 13 %3D z = 5 II wo - x + y - z = 4 3x + 2y + 4z = 17 -x + 5y + z = 8

Advanced Engineering Mathematics
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ISBN:9780470458365
Author:Erwin Kreyszig
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Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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Please do #23 and #25
Marker
In Exercises 19–28, solve the system of linear equations
using tire substitution method. (See Example 4.)
31. WRITIN
to use th
19. -2r +y + 6z = 1
20. х — бу — 2z%3-8
method
3x + 2y + 5z = 16
-x + 5y + 3z = 2
support
7x + 3y - 4z = 11
3x - 2y - 4z = 18
32. REPEAT
solving
a strateg
four line
21. x + y + z = 4
22. x+ 2y = –1
5x + 5y + 5z = 12
-x + 3y + 2z = -4
x - 4y + z = 9
-x + y - 4z = 10
МАTHЕMATIC
write and use
23. 2x – 3y + z = 10
24. x = 4
33. The trian
y + 2z = 13
x + y = -6
lengths
4x - 3y + 2z = 26
211 26 (E
25. x + y – z = 4
26. 2x – y - z = 15
l = =m
3x + 2y + 4z = 17
4x + 5y + 2z = 10
-x + 5y + z = 8
-x - 4y + 3z = - 20
27. 4x + y + 5z = 5
28. x + 2y -z = 3
34. What ar
8x + 2y + 10z = 10
2x + 4y – 2z = 6
x – y – 2z = –2
Vino
-x – 2y + z = -6
29. PROBLEM SOLVING The number of left-handed
people in the world is one-tenth the number of right-
handed people. The percent of right-handed people
Is nine times the percent of left-handed people and
ambidextrous people combined. What percent of
people are ambidextrous?
Transcribed Image Text:Marker In Exercises 19–28, solve the system of linear equations using tire substitution method. (See Example 4.) 31. WRITIN to use th 19. -2r +y + 6z = 1 20. х — бу — 2z%3-8 method 3x + 2y + 5z = 16 -x + 5y + 3z = 2 support 7x + 3y - 4z = 11 3x - 2y - 4z = 18 32. REPEAT solving a strateg four line 21. x + y + z = 4 22. x+ 2y = –1 5x + 5y + 5z = 12 -x + 3y + 2z = -4 x - 4y + z = 9 -x + y - 4z = 10 МАTHЕMATIC write and use 23. 2x – 3y + z = 10 24. x = 4 33. The trian y + 2z = 13 x + y = -6 lengths 4x - 3y + 2z = 26 211 26 (E 25. x + y – z = 4 26. 2x – y - z = 15 l = =m 3x + 2y + 4z = 17 4x + 5y + 2z = 10 -x + 5y + z = 8 -x - 4y + 3z = - 20 27. 4x + y + 5z = 5 28. x + 2y -z = 3 34. What ar 8x + 2y + 10z = 10 2x + 4y – 2z = 6 x – y – 2z = –2 Vino -x – 2y + z = -6 29. PROBLEM SOLVING The number of left-handed people in the world is one-tenth the number of right- handed people. The percent of right-handed people Is nine times the percent of left-handed people and ambidextrous people combined. What percent of people are ambidextrous?
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