SOLUTION: I'm in an algebra two class and I don't understand one bit of it. When I do finally comprehend, my teacher confuses me. Help! He gave us homework to do and the whole class has deci

Algebra ->  Matrices-and-determiminant -> SOLUTION: I'm in an algebra two class and I don't understand one bit of it. When I do finally comprehend, my teacher confuses me. Help! He gave us homework to do and the whole class has deci      Log On


   



Question 73000: I'm in an algebra two class and I don't understand one bit of it. When I do finally comprehend, my teacher confuses me. Help! He gave us homework to do and the whole class has decided to omit it. I don't want to. I need to understand this stuff. So can someone please help me? It's due monday. I just need an example so I can try to figure out how to do the rest. Here's the problem...
Calculate the determinant of the matrix.
[18 5]
9 -4

Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
Calculate the determinant of the matrix.
[18 5]
[9 -4]
---------------
determinant = (18*-4)-(5*9)= -72 - 45 = -117
========
Cheers,
Stan H.