3 years ago

A rectangle is formed by placing two identical squares side by side

Mathematics

1 answer:

ryzh [129]3 years ago

3 0

The perimeter of the entire rectangle is 12 cm.

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Use a matrix equation to solve the system of linear equations. left brace Start 2 By 1 Matrix 1st Row 1st Column 2nd Row 1st Col

natali 33 [55]

Answer:

$\left[\begin{array}{ccc}3&-1&\\-1&1/2\\\end{array}\right]$

Step-by-step explanation:

The matrix system for the linear equations: x + 2y = 8, 2x + 6y = 9

$\left[\begin{array}{ccc}1&2&\\2&6\\\end{array}\right] \left[\begin{array}{ccc}x\\y\end{array}\right] = \left[\begin{array}{ccc}8\\9\end{array}\right]$

To get the coefficient of x and y, the inverse of the first matrix (let the first matrix be A) must be known.

$A^{-1}$ = (1 / determinant of A) x Adjoint of A

the determinant of A = (1 x 6) - (2 x 2) = 6 - 4 = 2

Adjoint of A = $\left[\begin{array}{ccc}6&-2&\\-2&1\\\end{array}\right]$

$A^{-1}$ = $\frac{1}{2} \left[\begin{array}{ccc}6&-2\\-2&1\end{array}\right]$ = $\left[\begin{array}{ccc}3&-1&\\-1&1/2\\\end{array}\right]$

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Kết quả của phép tính : 2(x+1) là?

Gwar [14]

Answer:

2x + 2 is your using distributive property

Step-by-step explanation:

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Please help fast will give 5 stars and thank you

aniked [119]

Answer:

(1,-1)

Step-by-step explanation:

Hope it helps

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6x6=(6x6) + (6x6)<br> So, 6x6= ___ + ____

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Answer:

(6×6) + (6×6)

36. + 36 = 72

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