Welcome :: Homework Help and Answers :: Mathskey.com

Q&A
Unanswered
Categories
Users
Ask a Question

Welcome to Mathskey.com Question & Answers Community. Ask any math/science homework question and receive answers from other members of the community.

Q&A Categories
BASIC MATH (93)
PRE-ALGEBRA (441)
ALGEBRA 1 (2,220)
GEOMETRY (864)
ALGEBRA 2 (2,751)
TRIGONOMETRY (1,187)
PRECALCULUS (1,903)
CALCULUS (2,802)
STATISTICS (129)
PHYSICS (659)
CHEMISTRY (137)
MECHANICAL ENGINEERING (64)
ELECTRICAL ENGINEERING (207)
Winplot Tutorials (2)

Most popular tags

solving-equations system-of-equations functions math slope-intercept-form physics homework-help trigonometric-identities integration limits substitution-method calculus

13,459 questions

17,854 answers

1,446 comments

811,116 users

Solve each system of equations by using A^-1.

0 votes

x + 4y = 5
3x + 8y = 7

system-of-equations
solving-equations

asked Mar 17, 2014 in ALGEBRA 2 by andrew Scholar

Share this question

Google+ Facebook Twitter LinkedIn Reddit

Please log in or register to add a comment.

Please log in or register to answer this question.

1 Answer

0 votes

Given equations are x + 4y = 5 and 3x + 8y = 7.

Write the equations in to matrix form .

A is coefficient matrix , X is variable matrix and B is constant matrix.

For it's inverse is .

Substitute the above value in equation (1).

Solution

answered Mar 28, 2014 by david Expert

Please log in or register to add a comment.

Related questions

Solve each system of equations by using elimination

asked Aug 20, 2014 in CALCULUS by anonymous

elimination-method
system-of-equations
solving-equations

solve this system of equations by using the substitution method 5x-3y=-11 (1) and 3x+22y=1 (2)

asked Mar 5, 2014 in ALGEBRA 2 by mathgirl Apprentice

system-of-equations
solving-equations
substitution-method
elimination-method

solve each system by using matrices

asked Mar 17, 2014 in ALGEBRA 2 by chrisgirl Apprentice

system-of-equations
solving-equations
using-matrices

determine the best method to solve each system of equations. Then solve the system.

asked Mar 11, 2014 in ALGEBRA 2 by linda Scholar

system-of-equations
elimination-method
solving-equations
substitution-method

Solve using system of equations:

asked Dec 24, 2017 in ALGEBRA 2 by anonymous

system-of-equations
solving-equations

solve the following system of equations using matrices

asked Mar 18, 2014 in ALGEBRA 2 by rockstar Apprentice

system-of-equations
solving-equations
using-matrices

I need help with usings Cramer's Rule. The question is: Solve the following system of equations using Cramer's Rule.

asked Mar 17, 2014 in ALGEBRA 2 by skylar Apprentice

system-of-equations
cramers-rule
using-matrices
solving-equations

Solve this system of equations using substitution.

asked Mar 10, 2014 in ALGEBRA 2 by homeworkhelp Mentor

system-of-equations
solving-equations
substitution-method

Solve the system of equations by the addition method

asked Mar 11, 2014 in ALGEBRA 2 by dkinz Apprentice

system-of-equations
solving-equations
elimination-method
substitution-method

solve the following system of linear equations by addition: 2x+2y=26, -3x+3y=-21

asked Mar 6, 2014 in ALGEBRA 2 by dkinz Apprentice

system-of-equations
solving-equations

Solve each system using Gaussian elimination. State whether each system is independent, dependent, or inconsistent.

asked Mar 18, 2014 in ALGEBRA 2 by angel12 Scholar

system-of-equations
solving-equations
independent
consistent

Solve each system in three variables using Gaussian elimination.

asked Mar 17, 2014 in ALGEBRA 2 by payton Apprentice

system-of-equations
gauss-jordan-method
solving-equations

Solve each system by substitution. Determine whether each system is independent, inconsistent, or dependent

asked Mar 18, 2014 in ALGEBRA 2 by futai Scholar

system-of-equations
solving-equations
consistent
independent

Solve each system by substitution. Determine whether each system is independent, inconsistent, or dependent

asked Mar 18, 2014 in ALGEBRA 2 by abstain12 Apprentice

system-of-equations
solving-equations
independent
consistent

solve each system by substitution - 2x + 2y = 2, -4x + 4y = 12

asked Mar 10, 2014 in ALGEBRA 2 by homeworkhelp Mentor

system-of-equations
substitution-method
solving-equations

Solve each system of three linear equations containing three unknowns.

asked Sep 24, 2014 in ALGEBRA 1 by harvin0845 Rookie

system-of-equations
solving-equations
system-of-linear-equations

Solve each system of equations

asked Sep 24, 2014 in ALGEBRA 1 by harvin0845 Rookie

system-of-equations
solving-equations

Use substitution to solve each system of equations.

asked Mar 14, 2014 in ALGEBRA 1 by futai Scholar

system-of-equations
solving-equations
elimination-method
substitution-method

use elimination to solve the system of equations x-y+z=-1, x+y+3z=-3 and 2x+y+2z=0

asked Feb 20, 2014 in ALGEBRA 2 by angel12 Scholar

system-of-equations
solving-equations
elimination-method
substitution-method

Solve the system of linear equations using the Gauss-Jordan elimination method.

asked Mar 14, 2014 in ALGEBRA 1 by harvy0496 Apprentice

system-of-equations
solving-equations
gauss-jordan-method
elimination-method

Copyright © 2024 MATHSKEY. All Rights Reserved. Sitemap|Terms Of Use|Disclaimer|Contact Us|FAQ

...