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

12,522 questions

17,239 answers

1,424 comments

28,587 users

MATH HELP 5

0 votes

asked Aug 3 in ALGEBRA 1 by anonymous

1 Answer

0 votes

2.1.1

Step 1:

The system of equations are

Convert the equations into matrices form image,

where image is coefficient matrix, image is variable matrix and image is constant matrix.

Solve the equations by using Cramers Rule.

Since image Cramers Rule is applicable.

Step 2:

image

image

image

image

Solution:

image

2.1.2

Cofactor of -3 is 18.

answered Aug 4 by Anney Mentor

Related questions

asked Aug 3 in ALGEBRA 1 by anonymous
asked Aug 3 in ALGEBRA 1 by anonymous
asked Aug 3 in ALGEBRA 1 by anonymous
asked Aug 3 in ALGEBRA 1 by anonymous
asked Aug 3 in ALGEBRA 1 by anonymous
...