Use the inverse matrix to solve this system of equations:

Question

4x+3y=7.5
7x+9z=14
4y-z=8.3

A) x = -2.125, y = 3.23, and z = 4.555
B) x = 1.661, y = 2.509, and z = 0.404
C) x = 2.509, y = 1.661, and z = -0.404
D) x = 0.260, y = 2.435, and z = 1.375
E) x = 2.435, y = 1.375, and z = 0.260

I've tried everything and I can't get the answer.

Answer 1

first tell me what you got for your inverse matrix