How many solutions will there be to the following equation?

Mathematics

1 answer:

Akimi4 [234]2 years ago

7 0

Answer:

C. 1 solution

Step-by-step explanation:

I calculated logically

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Use Cramer's Rule to solve the following system: –2x – 6y = –26 5x + 2y = 13

andriy [413]

$\bf \begin{cases}
-2x-6y&=-26\\
\quad 5x+2y&=13
\end{cases}\stackrel{\textit{determinant of the coefficients}}{D=
\begin{bmatrix}
-2&-6\\5&2
\end{bmatrix}}\implies (-4)-(-30)
\\\\\\
D=-4+30\implies \boxed{D=26}\\\\
-------------------------------\\\\$

$\bf x=\cfrac{D_x}{D}\implies x=\cfrac{
\begin{bmatrix}
\boxed{-26}&-6\\\\ \boxed{13}&2
\end{bmatrix}}{D}\implies x=\cfrac{(-52)-(-78)}{26}
\\\\\\
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-------------------------------\\\\
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\begin{bmatrix}
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3 years ago

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Read 2 more answers

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Anni [7]

Answer:

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Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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