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Valentin [98]
3 years ago
12

Help plz correct answer gets branliest

Mathematics
2 answers:
daser333 [38]3 years ago
7 0

Answer:

I would go with B or D

Step-by-step explanation:

Eva8 [605]3 years ago
3 0

Answer:

Step-by-step explanation:

This system can simply be solved by substitution

3x + 2y = 14\\x = 4y - 2\\

Now, replace x in the top equation by what it is defined by in the second equation

3(4y - 2) + 2y = 14\\12y - 6 + 2y = 14\\14y = 20\\y = \frac{20}{14} = \frac{10}{7}

Now we can solve for x using the second equation

x = 4y-2\\x = 4(\frac{10}{7})-2\\x = \frac{40}{7} - \frac{14}{7} \\x = \frac{26}{7}

x = \frac{26}{7}, y=\frac{10}{7}  \\(\frac{26}{7},\frac{10}{7})

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For any matrix to be invertible, matrix should be non singular i.e. det(x)\neq 0.

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