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murzikaleks [220]
3 years ago
12

In the equation  Ax+By=C , if A is positive, and B and C are negative, which of the following are true? Select all that apply.

Mathematics
1 answer:
Naya [18.7K]3 years ago
5 0
I believe that the answer is A and D
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X + 2y = 5<br> x - 3y = 7 <br> What is the value of the y-determinant? <br> -2<br> -1 <br> 2
grandymaker [24]

Answer:

y-determinant = 2

Step-by-step explanation:

Given the following system of equation:

  • x + 2y = 5
  • x - 3y = 7

Let's represent it using a matrix:

\left[\begin{array}{ccc}1&2\\1&-3\end{array}\right] = \left[\begin{array}{ccc}5\\7\end{array}\right]

The y‐numerator determinant is formed by taking the constant terms from the system and placing them in the y‐coefficient positions and retaining the x‐coefficients. Then:

\left[\begin{array}{ccc}1&5\\1&7\end{array}\right]

y-determinant = (1)(7) - (5)(1) = 2.

Therefore, the y-determinant = 2

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Answer:?????????

Step-by-step explanation:

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Read 2 more answers
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