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What is the value of d21+ d22+d23 given the matrix below?

D+ 1 0 1 9 -3 2
-3 9 -7 = 8 -1 0
-20 2 4 11 15 3

A. 2
B. 8
C. 26
D. 28

User Abhiomkar
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1 Answer

3 votes
the answer is C. 26
I hope I could help you to your advantage (:
User Prokop Hapala
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