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3 years ago

How to solve -6x-5y=18 -5×+2y=22

Mathematics

1 answer:

Orlov [11]3 years ago

6 0

-5 x 2y = 22
2y = 22 / -5 which is -4.4
y = -2.2
Substitute:
-6x + 11 = 18
-6x = 7
x = 7 / -6

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What degree of rotation is represented on this matrix

Korvikt [17]

Answer:

Option B is correct

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Step-by-step explanation:

A rotation matrix is a matrix that is used to perform a rotation in Euclidean space.

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$R = \begin{bmatrix}\cos \theta & -\sin \theta \\ \sin \theta & \cos \theta \end{bmatrix}$

Given the matrix: $\begin{bmatrix}0 & 1 \\ -1 & 0\end{bmatrix}$

Now, equate the given matrix with standard matrix we have;

$\begin{bmatrix}\cos \theta & -\sin \theta \\ \sin \theta & \cos \theta \end{bmatrix}$ = $\begin{bmatrix}0 & 1 \\ -1 & 0\end{bmatrix}$

On comparing we get;

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As,we know:

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we get;

$\theta = -90^{\circ}$

and

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we get;

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3 years ago

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Step-by-step explanation:

Let,

one number = x

2nd number = y

According to statement;

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Putting y=x+4 from Eqn 2 in Eqn 1;

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Keywords: Linear equation, Addition

Learn more about linear equations at:

#LearnwithBrainly

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3 years ago

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Answer:

Step-by-step explanation:

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