Posted by **Anonymous** on Sunday, November 13, 2011 at 3:40pm.

okay, so I'm trying to figure out how to do this 3x3 matrix. I'm suppose to be finding the determent and using CRAMER'S RULE. Can someone please explain to me how to do this?

4x-y+z= -5

2x+2y+3z=10

5x-2y+6z=1

- precal -
**Damon**, Sunday, November 13, 2011 at 4:55pm
http://www.youtube.com/watch?v=taBHTo8sviM

- precal -
**Damon**, Sunday, November 13, 2011 at 5:01pm
first determinant calculator

http://www.wolframalpha.com/widgets/view.jsp?id=7fcb0a2c0f0f41d9f4454ac2d8ed7ad6

+4 -1 +1

+2 +2 +3

+5 -2 +6

determinant = D = 55

- precal -
**Damon**, Sunday, November 13, 2011 at 5:07pm
Now for x put right side in x column

+5 -1 +1

10 +2 +3

+1 -2 +6

determinant = Dx = 125

x = 125/55

You go ahead and do y and z

- precal -
**Damon**, Sunday, November 13, 2011 at 5:18pm
Utube on how to find determinant of 3x3

http://www.youtube.com/watch?v=ROFcVgehEYA&feature=related

- whoops typo -
**Damon**, Sunday, November 13, 2011 at 5:24pm
Now for x put right side in x column

-5 -1 +1 nope negative 5

10 +2 +3

+1 -2 +6

determinant = Dx = -55

x = -55/55

x = -1

You go ahead and do y and z

## Answer this Question

## Related Questions

- Math - Solve using Determinants and Cramer's Rule? I was absent and missed the ...
- cramers rule - Solve the following linear system for x using Cramer’s rule. Show...
- Math - I have a matrix with brackets around [7 6 ][13] [14 -6] [8] and i know ...
- Discrete Math - I am really stuck on these problems. I've worked a lot of them ...
- Algebra 2(check pt 4) - 1)Cramer's Rule is used to solve the system of equations...
- Algebra II - 1) when using cramer's rule to solve the system of equations ...
- MATHS - demand function for kerosene: Kd=a0+a1Pk supply function for kerosene: ...
- Algebra 2..... - *Please explain on how to do each of these! 1. Let (x) be ...
- ALGEBRA 2... - *Please explain on how to do each of these! 1. Let (x) be defined...
- Product Rule - Can someone please help me with this? f(x)=(x-2)^1/2 * (x^2-3)^3 ...