bm42400 bm42400

24-04-2019
Mathematics

contestada

Find the value of the matrices
A) 17
B) 12
C) 15
D) 13

Find the value of the matrices A 17 B 12 C 15 D 13 class=

Respuesta :

absor201 absor201

24-04-2019

Answer:

option C is correct

Step-by-step explanation:

We need to find the determinant.

= -1(7*9 - 3*9)-( -3)(4*9 - 3*3) -2(4*9 -7*3)

= -1(63-27) +3 (36 - 9) -2( 36- 21)

= -1(36)+3(27)-2(15)

= -36+81-30

= 15

Option C is correct

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