Chapter 4.2, Problem 50E

### Finite Mathematics and Applied Cal...

7th Edition
Stefan Waner + 1 other
ISBN: 9781337274203

Chapter
Section

### Finite Mathematics and Applied Cal...

7th Edition
Stefan Waner + 1 other
ISBN: 9781337274203
Textbook Problem

# In Exercises 47-50, use technology to solve the system of equations. Express all solutions as decimals, rounded to one decimal place. 1.2 x − 0.3 y + 0.4 − 2 t = 4.5 1.9 x − 0.5 z − 3.4 t = 0.2 12.1 y − 1.3 t = 0 3 x + 2 y − 1.1 z = 9

To determine

To calculate: The solution of below set of equation by using technology and round it to one decimal place.

1.2x0.3y+0.4z2t=4.51.9x0.5z3.4t=0.212.1y1.3t=03x+2y1.1z=9

Explanation

Given information:

The provided set of equation:

1.2xā0.3y+0.4zā2t=4.51.9xā0.5zā3.4t=0.212.1yā1.3t=03x+2yā1.1z=9

Calculation:

Consider the provided set of equation:

1.2xā0.3y+0.4zā2t=4.51.9xā0.5zā3.4t=0.212.1yā1.3t=03x+2yā1.1z=9

Convert the above set of equation into augment matrix:

[1.2ā0.30.4ā24.51.90ā0.5ā3.40.2012.20ā1.3032ā1.109]

Use Ti-83 to reduce the above matrix in row echelon form:

Step1: Press ON key.

Step2: Press 2nd+xā1 key, then go to EDIT option

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