SOLUTION: Homework Question 2 need help solve the following system of equations by using the inverse of the coefficent matrix i would like if the answer was pointed out and the solution in o

Algebra ->  Matrices-and-determiminant -> SOLUTION: Homework Question 2 need help solve the following system of equations by using the inverse of the coefficent matrix i would like if the answer was pointed out and the solution in o      Log On


   

Question 632354: Homework Question 2 need help solve the following system of equations by using the inverse of the coefficent matrix i would like if the answer was pointed out and the solution in ordered pair (AX=B) x+8y=-29 2x+3y=-19 The inverse of matrix A,A-1 is?
and what is the solution in ordered pair here is a screenshot http://oi47.tinypic.com/2qwebcx.jpg
just the answers i need to enter in the 4 boxes and the ordered pair please for the solution
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 

Hi,

Please carefully follow the work, so as you may learn how to others like it.

Solve the system of equations by using the inverse of the coefficient matrix.

x+8y=-29 

2x+3y=-19

A+=+%28matrix%282%2C2%2Ca1%2Cb1%2Ca2%2Cb2%29%29+=+a1b2-b1a2                                  

A+=%28+matrix%282%2C2%2C1%2C8%2C2%2C3%29%29 = -13

A%5E%28-1%29+=+%281%2F%28a1b2+-+b1a2%29%29%28matrix%282%2C2%2Cb2%2C-b1%2C-a2%2Ca1%29%29





and...