A rectangle has a width of 3 units. The rectangle's length is 5 times its width.
1 answer:
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Answer:
A =
Step-by-step explanation:
given,
Matrix =
A =
determinant of matrix
|A| = a×a - (a-4)(a+4)
|A| = a² - a² +16
|A| = 16
inverse of the matrix
to calculate inverse of two matrix interchange the term a₁₁ with a₂₂ and multiply the -ve with a₁₂ and a₂₁
the inverse is
A =