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VLD [36.1K]
3 years ago
8

Im having trouble on 2 questions... 2 (x-5)=x-8 and

Mathematics
1 answer:
OverLord2011 [107]3 years ago
7 0
2(x-5)=x-8\\
2x-10=x-8\\
2x-x=-8+10\\
x=2\\\\
2(x-5)=x\\
2x-10=x\\
2x-x=10\\
x=10
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Parallel lines m and n are cut by a transversal. At the intersection of line m with the transversal, the uppercase left angle is
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40

Step-by-step explanation:

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3 years ago
The ratio of chaperones to students on a field trip to New York City is 2 to 11. If there are 297 students on the trip, how many
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So we have 27 groups of 11 students. If there are 2 chaperones for every 11 students, then we can do:

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7 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
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nika2105 [10]

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4 0
3 years ago
Read 2 more answers
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Lorico [155]

Answer:

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Step-by-step explanation:

i counted all the others and this is the only one that doesn't add up to 16. the last answer is -16 not 16 so there you go.

8 0
3 years ago
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