Big Ideas Math A Bridge To Success Algebra 1: Student Edition 2015
1st Edition
ISBN:9781680331141
Author:HOUGHTON MIFFLIN HARCOURT
Publisher:HOUGHTON MIFFLIN HARCOURT
Chapter5: Solving Systems Of Linear Equations
Section5.4: Solving Special Systems Of Linear Equations
Problem 31E
Related questions
Concept explainers
Percentage
A percentage is a number indicated as a fraction of 100. It is a dimensionless number often expressed using the symbol %.
Algebraic Expressions
In mathematics, an algebraic expression consists of constant(s), variable(s), and mathematical operators. It is made up of terms.
Numbers
Numbers are some measures used for counting. They can be compared one with another to know its position in the number line and determine which one is greater or lesser than the other.
Subtraction
Before we begin to understand the subtraction of algebraic expressions, we need to list out a few things that form the basis of algebra.
Addition
Before we begin to understand the addition of algebraic expressions, we need to list out a few things that form the basis of algebra.
Topic Video
Question
100%
Please do #6 and #20
Transcribed Image Text:2.4
Exercises
Dynamic Solutions:
-Vocabulary and Core Concept Check
1. VOCABULARY The solution of a system of three linear equations is exp
2. WRITING Explain how you know when a linear system in three variab
many solutions.
Monitoring Progress and Modeling with Mathem
In Exercises 3-8, solve the system using the elimination
method. (See Example 1.)
13. x+3y
x+ y
3. x+y-2z = 5
-x+ 2y + z = 2
2x + 3y- z = 9
4. x+ 4y - 6z = -1
3x + 1
2x - y+ 2z = -7
-x + 2y – 4z = 5
15. x + 2
-3x
5. 2x + y-z = 9
-x + 6y + 2z = -17
5x + 7y + z = 4
6. 3x + 2y -z 8
- 2x
- 3x + 4y + 5z = - 14
x- 3y + 4z = - 14
%3D
17. MOD
7. 2x + 2y + 5z = -1
2x - y +z 2
place
soda
of s
8. 3x + 2y - 3z = -2
7x- 2y + 5z = -14
pizza
Ho
2x + 4y - 3z = 14
2x + 4y + z = 6
00000
ERROR ANALYSIS In Exercises 9 and 10, describe and
correct the error in the first step of solving the system of
linear equations.
4x - y+ 2z = – 18
-x+ 2y + z = 11
Transcribed Image Text:In Exercises 19–28, solve the system of linear equations
using the substitution method. (See Example 4.)
31.
19. -2x + y + 6z = 1
20. х — бу- 2z%3-8
-x + 5y + 3z= 2
3x + 2y + 5z = 16
7x + 3y – 4z = 11
3x - 2y- 4z = 18
32.
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
MAT
write
23. 2x – 3y + z = 10
24. x = 4
|
33.
y + 2z = 13
x + y = -6
z = 5
4x - 3y + 2z = 26
25. x + y – z = 4
26. 2x – y – z = 15
3x + 2y + 4z = 17
4x + 5y + 2z = 10
-x + 5y + z = 8
-x - 4y + 3z = -20
%3D
27. 4x + y + 5z = 5
28. x + 2y -z = 3
8x + 2y + 10z = 10
2x + 4y- 2z = 6
SA
34.
%3D
X- y – 2z = -2
-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 nercent of
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
This is a popular solution!
Trending now
This is a popular solution!
Step by step
Solved in 3 steps with 3 images
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, algebra and related others by exploring similar questions and additional content below.Recommended textbooks for you
Big Ideas Math A Bridge To Success Algebra 1: Stu…
Algebra
ISBN:
9781680331141
Author:
HOUGHTON MIFFLIN HARCOURT
Publisher:
Houghton Mifflin Harcourt
College Algebra (MindTap Course List)
Algebra
ISBN:
9781305652231
Author:
R. David Gustafson, Jeff Hughes
Publisher:
Cengage Learning
Functions and Change: A Modeling Approach to Coll…
Algebra
ISBN:
9781337111348
Author:
Bruce Crauder, Benny Evans, Alan Noell
Publisher:
Cengage Learning
Big Ideas Math A Bridge To Success Algebra 1: Stu…
Algebra
ISBN:
9781680331141
Author:
HOUGHTON MIFFLIN HARCOURT
Publisher:
Houghton Mifflin Harcourt
College Algebra (MindTap Course List)
Algebra
ISBN:
9781305652231
Author:
R. David Gustafson, Jeff Hughes
Publisher:
Cengage Learning
Functions and Change: A Modeling Approach to Coll…
Algebra
ISBN:
9781337111348
Author:
Bruce Crauder, Benny Evans, Alan Noell
Publisher:
Cengage Learning
Glencoe Algebra 1, Student Edition, 9780079039897…
Algebra
ISBN:
9780079039897
Author:
Carter
Publisher:
McGraw Hill
