3 years ago

What is the correct solution of 4 - 2x = -2 +4 +4 2x = 2 2 2 x = 6

Mathematics

1 answer:

zepelin [54]3 years ago

4 0

The answer is x=3
Lol

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What is the determinant of the coefficient matrix of this system? <br> 4x-3y=-8 <br> 8x-3y=12

gladu [14]

The coefficient matrix is build with its rows representing each equation, and its columns representing each variable.

So, you may write the matrix as

$\left[\begin{array}{cc}\text{x-coefficient, 1st equation}&\text{y-coefficient, 1st equation}\\\text{x-coefficient, 2nd equation}&\text{y-coefficient, 2nd equation} \end{array}\right]$

which means

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The determinant is computed subtracting diagonals:

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So, we have

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Trigonometry please help! work need to be shown

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Answer:

x = 5.56

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Apply trigonometric function to find x

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