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natita [175]
4 years ago
15

Need help math question asap, DOUBLE 12 POINTS!

Mathematics
2 answers:
ANTONII [103]4 years ago
5 0

The row is the first number in a13. Rows go across. So you are in the top row.

The 3 or second number is the column. Columns go up and down.


Row 1 column 3 is the - 1.


The answer is C.

juin [17]4 years ago
3 0

The element a_{13} is the entry in the 1st row and 3rd column of the matrix, which, in this case, is 7.


Edit: Got my rows/columns mixed up! Row 1, Column 3 is actually -1, as the original poster pointed out.

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