Step-by-step explanation:
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Richard and Jordan went to see a movie. Richard spent m dollars at the movie theater, and Jordan spent $12 at the movie theater.
1 answer:
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ANSWER
24
EXPLANATION
For a matrix A of order n×n, the cofactor of element
is defined to be
is the minor of element
equal to the determinant of the matrix we get by taking matrix A and deleting row i and column j.
Here, we have
M₁₁ is the determinant of the matrix that is matrix A with row 1 and column 1 removed. The bold entries are the row and the column we delete.
Since the determinant of a 2×2 matrix is
it follows that
so
i)50
<u>Steps</u>
30+20=50
ii)7
<u>Steps</u>
75-(30+20)-18
=75-(50)-18
=7
iii)20
<u>Steps</u>
From the available data from the question
iv)30
<u>Steps</u>
From the available data from the questionl
v)From the attcged image file
