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Mekhanik [1.2K]
2 years ago
10

Which line has the same slope as the line passing through (-4,-1) and (-1,8)?

Mathematics
1 answer:
kirill115 [55]2 years ago
4 0

Answer:

3

Step-by-step explanation:

The formula for slope is

y2-y1/x2-x1

In (-4,-1) -4 is x1 and -1 is y1

In (-1,8)?-1 is x2 and 8 is y2

8+1/-1+4

Which is 9/3

This can be simplified into 3

Thus the slope is 3

Hope this helps!

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Murrr4er [49]

Answer:

8. yes, ASA

9. yes, SAS

10. yes, AAS

11. no

12. no

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Step-by-step explanation:

4 0
3 years ago
Is matrix multiplication comutative?
konstantin123 [22]

Answer:

Matrix multiplication is not conmutative

Step-by-step explanation:

The matrix multiplication can be performed if the number of columns of the first matrix is equal to the number of rows of the second matrix

Let A with dimension mxn and B with dimension nxp represent two matrix

The multiplication of A by B is a matrix C with dimension mxp, but the multiplication of B by A is can't be calculated because the number of columns of B is not the number of rows of A. Therefore, you can notice that is not conmutative in general.

But even if the multiplication of AB and BA is defined (For example if A and B are squared matrix of 2x2) the multiplication is not necessary conmutative.

The matrix multiplication result is a matrix which entries are given by dot product of the corresponding row of the first matrix and the corresponding column of the second matrix:

A=\left[\begin{array}{ccc}a11&a12\\a21&a22\end{array}\right]\\B= \left[\begin{array}{ccc}b11&b12\\b21&b22\end{array}\right]\\AB = \left[\begin{array}{ccc}a11b11+a12b21&a11b12+a12b22\\a21b11+a22b21&a21b12+a22b22\end{array}\right]\\\\BA=\left[\begin{array}{ccc}b11a11+b12a21&b11a12+b12a22\\b21a11+b22ba21&b21a12+b22a22\end{array}\right]

Notice that in general, the result is not the same. It could be the same for very specific values of the elements of each matrix.

6 0
3 years ago
If x = 9, what is the value of 6(x - 2)?
balandron [24]

Answer: 42

6(9-2)

= 6 * 7

= 42

3 0
2 years ago
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jek_recluse [69]

Answer:

41

Step-by-step explanation:

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the sqrt of 1681= 41

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3 years ago
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Andru [333]

Answer:

The graph of the line shifts horizontally left 2 units.

Step-by-step explanation:

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