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What is the determinant of m= {5 8 -5 4} ? 20 40 60 80

User Jackdaw
by
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2 Answers

3 votes

Answer:

c. 60

Step-by-step explanation

math

User Severin
by
8.1k points
7 votes

Answer:

60

Explanation:

We have been given the matrix;


\left[\begin{array}{ccc}5&8\\-5&4\end{array}\right]

For a 2-by-2 matrix, the determinant is calculated as;

( product of elements in the leading diagonal) - (product of elements in the other diagonal)

determinant = ( 5*4) - (8*-5)

= 20 - (-40) = 60

User Danyamachine
by
8.9k points

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