Thursday

December 18, 2014

December 18, 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.

**Answer this Question**

**Related Questions**

maths pls help - 1. Solve the following simultaneous equations: log2 xy = 7 log2...

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 ...

maths - solve the following pair of simultaneous equations. 2x-3y=13 3x+y=3

maths - using the substitution p=1/x, q=1/y, solve simultaneous equations 1/x-5/...

math - solve the simultaneous equations to find the coordinates of the point of ...

Math - solve the following system of equations using matrices 4x-2y=7 7x+y=13