Answer :

The determinant of the given matrix is 1. The correct option is G. 1

The determinant of a 2x2 matrix is found by multiplying the values on the main diagonal (top left to bottom right) and subtracting the product of the values on the other diagonal (top right to bottom left).

In this case, the given matrix is [tex]\left[\begin{array}{ccc}-5&4\\-9&7\end{array}\right][/tex]
The determinant is calculated as (-5 * 7) - (4 * -9).
Simplifying, we get (-35) - (-36), which is equal to -35 + 36 = 1.

Therefore, the determinant of the given matrix is 1.

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