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svetlana [45]
3 years ago
15

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

Mathematics
1 answer:
nlexa [21]3 years ago
8 0

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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Answer:

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Step-by-step explanation:

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8 0
3 years ago
15t+30+5t=-4t+6 please show step by step
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