SOLUTION: Find the determinant of the matrix [-1,-2] ----------- ----------- -----------[8,4] a.0 b.12 c.-30 d.-10 e.20

Algebra.Com
Question 472607: Find the determinant of the matrix [-1,-2]
-----------------------------------[8,4]
a.0
b.12
c.-30
d.-10
e.20

Answer by stanbon(75887)   (Show Source): You can put this solution on YOUR website!
Find the determinant of the matrix [-1,-2]
-----------------------------------[8,4]
Ans: (-1*4)-(-2*8)
= -4-(-16)
= -4+16
= 12
====================
Cheers,
Stan H.
=================
a.0
b.12
c.-30
d.-10
e.20

RELATED QUESTIONS

What is the determinant of the following matrix? 3 1 -4 1 A. -13 B. 7 C. -1 D.... (answered by Alan3354,ikleyn)
I've missed a lot of school because I've been sick and I'm trying to get all of my work... (answered by jsmallt9)
Find the determinant for matrix [2 -1 -3, 1, 0 2, -1 2 1] One of the following is the... (answered by ikleyn,math_tutor2020)
I need your help on these three problems.................... (1). -4 5 -5 The... (answered by xcentaur)
1. What is the formula for the determinant of a 3 x 3 matrix ? A. B. C. (answered by AnlytcPhil)
1 ab c^2 1 bc a^2 1 ca b^2.Find the determinant of the value in... (answered by robertb)
For the matrix A = (-6 3 9) ( 3 6 -2) ( 5 1 4) a. Find the determinant of... (answered by ikleyn)
Solve the following questions: (a) Find curl of (xyz)i + (xy^2)j + (yz)k? (b) Find... (answered by ikleyn)
What is the determinant of the following matrix? Does the matrix have an inverse? 5 4 (answered by Fombitz)