Homework Help: Algebra 2(check pt 4)

Posted by erin on Saturday, July 28, 2007 at 3:55pm.

1)Cramer's Rule is used to solve the system of equations:3m-5n=12,4m+7n=-5

Which determinant represents the numerator for n?
answer=[12 -5]
[-5 7]

2)Cramer's Rule is used to solve the system of equations:3x-y+2z=17,4x+2y-3z=10,and 2x+5y-9z=-6

Which determinant represents the numerator for z?
answer=[3 -1 17]
[4 2 10]
[2 5 -6]

3)Which matrix would NOT be used to write a matrix equation for the system of equations:5m-2n=13 and -m+n=-2?
answer=[5 -2]
[-1 1]

4)Which product would be used to solve the matrix equation below by using inverse matrices?
[3 -4][a] [6]
[2 1] [b]= [7]
answer=1/11[1 4] [6]
[-2 3][7]
Thanks for the help:)

Algebra 2(check pt 4) - Chels, Thursday, October 18, 2007 at 6:17pm
I am so stuck on these same exact problems on my Algebra 2 test.

Answer this Question

Related Questions

Algebra II - 1) when using cramer's rule to solve the system of equations ...
Discrete Math - I am really stuck on these problems. I've worked a lot of ...
Algebra - Use Cramer's rule to solve the following system of equations. If D...
Algebra - Use Cramer's Rule to solve each system of equations. a+b+5c=2 3a+b...
College Algebra - Please help! x-2y+z=7 2x+y-z=0 3x+2y-2z=-2 a. Solve the above ...
cramers rule - Solve the following linear system for x using Cramer’s rule...
Algebra - Show equation AX=B represents a linear system of two equations in two ...
Algebra - Show equation AX=B represents a linear system of two equations in two ...
Math - Please help! x-2y+z=7 2x+y-z=0 3x+2y-2z=-2 a. Solve the above system of ...
Algebra(check pt 3) - 1)The dimensions of ST. S[7/12 -1/9] [-1/3 1/9] T[4 -5 2...

For Further Reading

First Name:
School Subject:
Answer: