Explanation Given: Equations 5 x − y = 21 and 2 x + 3 y = − 12 . Formula used: By eliminating one variable on solving two equations [Elimination method]. Calculation: We have two linear equations having two variables 5 x − y = 21 and 2 x + 3 y = − 12 . Say, 5 x − y = 21 -----(1) and 2 x + 3 y = − 12 -----(2) Two linear equations having two variables can be solved by eliminating a variable from these equations. Multiplying equation (1) by 3 and adding the result to equation (1) gives: 15 x - 3 y = 63 2 x + 3 y = - 12 _ 17 x = 51 x = 51 17 x =...

College Algebra Enhanced with Graphing Utilities (7th Edition) (Sullivan Enhanced with Graphing Utilities Series)

7th Edition

ISBN: 9780134111315

Author: Michael Sullivan, Michael Sullivan III

Publisher: PEARSON

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Chapter 8.1, Problem 21AYU

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To calculate: The solution for equations $5 x - y = 21$ and $2 x + 3 y = - 12$ .

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Chapter 8.1, Problem 20AYU

Chapter 8.1, Problem 22AYU

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Solve the linear system of equations attached using Gaussian elimination (not Gauss-Jordan) and back subsitution. Remember that: A matrix is in row echelon form if Any row that consists only of zeros is at the bottom of the matrix. The first non-zero entry in each other row is 1. This entry is called aleading 1. The leading 1 of each row, after the first row, lies to the right of the leading 1 of the previous row.

PRIMERA EVALUACIÓN SUMATIVA 10. Determina la medida de los ángulos in- teriores coloreados en cada poligono. ⚫ Octágono regular A 11. Calcula es número de lados qu poligono regular, si la medida quiera de sus ángulos internos • a=156° A= (-2x+80 2 156 180- 360 0 = 24-360 360=24° • a = 162° 1620-180-360 6=18-360 360=19 2=360= 18 12. Calcula las medida ternos del cuadrilá B X+5 x+10 A X+X+ Sx+6 5x=3 x=30 0 лаб • Cuadrilátero 120° 110° • α = 166° 40' 200=180-360 0 = 26-360 360=20 ひ=360 20 18 J 60° ⚫a=169° 42' 51.43" 169.4143180-340 0 = 10.29 54-360 360 10.2857 2=360 10.2857 @Sa

Chapter 8 Solutions

College Algebra Enhanced with Graphing Utilities (7th Edition) (Sullivan Enhanced with Graphing Utilities Series)

Ch. 8.1 - Solve the equation: . (pp. 82-85) Ch. 8.1 - Prob. 2AYU Ch. 8.1 - Prob. 3AYU Ch. 8.1 - Prob. 4AYU Ch. 8.1 - Prob. 5AYU Ch. 8.1 - If the lines that make up a system of two linear...Ch. 8.1 - If a system of two linear equations in two...Ch. 8.1 - Prob. 8AYU Ch. 8.1 - Prob. 9AYU Ch. 8.1 - Prob. 10AYU

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The solution for equations 5 x − y = 21 and 2 x + 3 y = − 12 .

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To calculate: The solution for equations 5x − y = 21 and 2x + 3y = −12 .

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Chapter 8 Solutions

To calculate: The solution for equations $5 x - y = 21$ and $2 x + 3 y = - 12$ .