Monday

April 21, 2014

April 21, 2014

Posted by **cecelia** on Wednesday, January 2, 2008 at 3:03am.

- maths -
**drwls**, Wednesday, January 2, 2008 at 3:44amAssuming you know how to calculate a determinant, the answer is

x = |24 -6| / |3 -6| = -18/-9 = 2

....|-23 5|/ |-4 5|

You can get y by substitution of x=2 in either equation, or from a separate ratio of determinants.

If you are not familiar with the notation, nor why I chose those numbers, nor how to calculate the determinants, then you need to review the subject. Your textbook should contain that information.

- maths -
**drwls**, Wednesday, January 2, 2008 at 3:48amThose are supposed to be square 2 x 2 matrices in numerator and denominator of my previous answer. It is hard to get the type spacing right to align the top and bottom halves. The | | symbols denote the determinant of the matrix.

**Related Questions**

Mathematics - write the following simultaneous equations in the form of AX= B ...

Mathematics - write the following simultaneous equations in the form of AX= B ...

Mathematics - write the following simultaneous equations in the form of AX= B ...

Mathematics - write the following simultaneous equations in the form of AX= B ...

Mathematics - write the following simultaneous equations in the form of AX= B ...

algebra 1 - how do you solve the following questions using the substitution ...

College Algebra - Solve the system of equations using matrices. If system has no...

maths simultaneous equations - 3x + 5y = 1 4x + 7y = 2

Algebra 1 - Are these right? xy - 3x - 8y + 24 (3x-y)-(8y+24) 8y+24 4x^2 + 20x...

math - solve using the elimination method. If the system has no solution or ...