EBK INTERMEDIATE ALGEBRA
13th Edition
ISBN: 9780134719023
Author: Johnson
Publisher: YUZU
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Textbook Question
Chapter B, Problem 28ES
c Solve using Cramer’s rule.
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Name
Assume there is the following simplified grade book:
Homework Labs | Final Exam | Project
Avery
95
98
90
100
Blake
90
96
Carlos
83
79
Dax
55
30
228
92
95
79
90
65
60
Assume that the weights used to compute the final grades are homework 0.3, labs 0.2,
the final 0.35, and the project 0.15.
| Write an explicit formula to compute Avery's final grade using a single
inner product.
Write an explicit formula to compute everyone's final grade simultane-
ously using a single matrix-vector product.
1. Explicitly compute by hand (with work shown) the following Frobenius inner
products
00
4.56 3.12
(a) ((º º º). (156
(b)
10.9
-1
0
2)),
Fro
5')) Fro
Chapter B Solutions
EBK INTERMEDIATE ALGEBRA
Ch. B - Evaluate. [3241]Ch. B - Evaluate.
2.
Ch. B - Evaluate.
3.
Ch. B - Evaluate.
4.
Ch. B - 5. Solve using Cramer’s rule:
Ch. B - 6. Solve using Cramer’s rule:
Ch. B - a Evaluate. [3728]Ch. B - a Evaluate. [5445]Ch. B - a Evaluate.
3.
Ch. B - a Evaluate. [4579]
Ch. B - a Evaluate.
5.
Ch. B - a Evaluate.
6.
Ch. B - a Evaluate.
7.
Ch. B - a Evaluate.
8.
Ch. B - b Evaluate.
9.
Ch. B - b Evaluate. [302512201]Ch. B - b Evaluate. [123342012]Ch. B - b Evaluate. [122210331]Ch. B - b Evaluate. [322214433]Ch. B - b Evaluate.
14.
Ch. B - b Evaluate.
15.
Ch. B - b Evaluate. [1652445310]Ch. B - c Solve using Cramers rule. x4y=6,5x+9y=10Ch. B - c Solve using Cramer’s rule.
18.
Ch. B - c Solve using Cramer’s rule.
19.
Ch. B - c Solve using Cramers rule. 5x4y=3,7x+2y=6Ch. B - c Solve using Cramers rule. 4x+2y=11,3xy=2Ch. B - c Solve using Cramers rule. 3x3y=11,9x2y=5Ch. B - c Solve using Cramers rule. x+4y=8,3x+5y=3Ch. B - c Solve using Cramers rule. x+4y=5,3x+2y=13Ch. B - c Solve using Cramers rule....Ch. B - c Solve using Cramers rule....Ch. B - c Solve using Cramers rule....Ch. B - c Solve using Cramers rule. 3c=6,b+2c=2,7a3b5c=14Ch. B - c Solve using Cramer’s rule.
29.
Ch. B - c Solve using Cramers rule....Ch. B - c Solve using Cramers rule....Ch. B - c Solve using Cramers rule....
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