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.

12,558 questions

17,264 answers

1,424 comments

29,919 users

Help with three math questions?

0 votes
asked Jan 17 in ALGEBRA 2 by anonymous
reshown Jan 17 by goushi

3 Answers

0 votes

13)

Step 1:

The equations are

image

Solve by using substitution method.

Substitute image in image

image

Solution:

The solution is image

answered Jan 17 by Anney Mentor
0 votes

15)

Step 1:

The system of equations are

image

Solve by using elimination method.

image

Write the equations into matrix form ,

Write the equations into matrix form , where is coefficient matrix,

is variable matrix and is constant matrix.

The augmented matrix is .

image

The augmented matrix is image

 

image

Solution:

The solutions of equations are image

answered Jan 17 by Anney Mentor
0 votes

33)

Step 1:

The equations are

image

Solve by using substitution method.

Substitute image in image

image

Solution:

The solution is image

answered Jan 17 by Anney Mentor

Related questions

asked Feb 1 in ALGEBRA 2 by anonymous
asked Jan 22 in ALGEBRA 2 by anonymous
asked Aug 15 in ALGEBRA 1 by anonymous
asked Jan 24 in TRIGONOMETRY by anonymous
asked Jan 5 in ALGEBRA 2 by anonymous
asked Feb 20 in ALGEBRA 2 by anonymous
asked Feb 8 in ALGEBRA 2 by anonymous
asked Jan 19 in ALGEBRA 2 by anonymous
asked Aug 18 in ALGEBRA 1 by anonymous
asked Aug 16 in ALGEBRA 1 by anonymous
asked Jan 16 in ALGEBRA 2 by anonymous
asked Jan 9 in ALGEBRA 2 by anonymous
asked Jan 7 in ALGEBRA 2 by anonymous
...