Help me please I need to know

2 answers:

4 0

The answer is 2,912 for 14×25×4

3 0

the answer to the question is 1,400

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laiz [17]

Answer: a11 = 3, a12 = 7, a21 = 1, a22 = -4

Explanation:

3x + 7y = 20

x - 4y = 9

A = $\left[\begin{array}{ccc}3&7&20\\1&-4&9\end{array}\right]$

column 1 column 2

row 1: (a11) 3 (a12) 7

row 2: (a21) 1 (a22) -4

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