Thursday

April 24, 2014

April 24, 2014

Posted by **Anonymous** on Wednesday, December 7, 2011 at 10:20pm.

3x+4y=-1

5x-2y=4

- solve using cramer's rule -
**MathMate**, Wednesday, December 7, 2011 at 10:45pmFirst calculate the determinant D of

3 4

5 -2

=3*(-2)-4*5=-26

Replace the first column by the RHS,and calculate determinant D1

-1 4

4 -2

=(-1)(-2)-4*4

=-14

Replace the column with the RHS and calculate determinant D2

3 -1

5 4

=3*4-(-1)*5

=17

x=D1/D=-14/-26=7/13

y=D2/D=17/-26=-17/26

**Related Questions**

Algebra II - 1) when using cramer's rule to solve the system of equations ...

cramers rule - Solve the following linear system for x using Cramer’s rule. Show...

Math - Solve using Determinants and Cramer's Rule? I was absent and missed the ...

Discrete Math - I am really stuck on these problems. I've worked a lot of them ...

Math - Using Cramer's rule, how do you solve? 2x-y=4 3x+y-z=10 y+z=3

Math - Please help! x-2y+z=7 2x+y-z=0 3x+2y-2z=-2 a. Solve the above system of ...

College Algebra - Please help! x-2y+z=7 2x+y-z=0 3x+2y-2z=-2 a. Solve the above ...

Algebra 2(check pt 4) - 1)Cramer's Rule is used to solve the system of equations...

precal - okay, so I'm trying to figure out how to do this 3x3 matrix. I'm ...

Algebra - I'm really lose with this problem...HELP Using Cramer Rule If D=O use ...