Mathematics: How do you solve 4x 5y = -7 and 3x - 6y = 24 using matrices?

How do you solve 4x 5y = -7 and 3x - 6y = 24

Ответ:

bnnn

01.01.2022

Aw yis

take the coefients and put them in rows

$\left[\begin{array}{ccc}4&5&|-7\\3&-6&|24\end{array}\right]$
divide 2nd row by 3
$\left[\begin{array}{ccc}4&5&|-7\\1&-2&|8\end{array}\right]$
multiply 2nd row by -4 and add to top one
$\left[\begin{array}{ccc}0&13&|-39\\1&-2&|8\end{array}\right]$
divide top row by 13
$\left[\begin{array}{ccc}0&1&|-3\\1&-2&|8\end{array}\right]$
multiply top row by 2 and add to bottom row
$\left[\begin{array}{ccc}0&1&|-3\\1&0&|2\end{array}\right]$

x=2
y=-3

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Ответ:

princess239

08.11.2021

Mathematics

Answer with explanation:

The point where the medians of triangle intersect is called Centroid of triangle.

Here, In ΔP QR,

PS ,QT , and RU are the medians.

The point of intersection of , PS and QT is at point (4,5).

So, the point of intersection of RU and PS will be also at (4,5).

In δpqr,ps ,qt , and ru are the medians, and ps and qt intersect at the point (4, 5)ru. intersects p

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How do you solve 4x 5y = -7 and 3x - 6y = 24 using matrices?

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