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balandron [24]
3 years ago
9

Helpppp please hurryyyy

Mathematics
1 answer:
tigry1 [53]3 years ago
3 0

Answer:

X=7 and y is y=40 length is 47

Step-by-step explanation:

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Step-by-step explanation:

To find the value of x and y, find the determinant of original matrix, which would be 21.

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Cramer's rule says that Dx ÷ D is the value of x. So, -63 ÷ 21 = -3.

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