Simplify 9 + 7 + n. n + 17 n + 16 16n
2 answers:
Answer:
B) n + 16
Step-by-step explanation:
We are given the expression 9 + 7 + n.
Here we need to simplify.
Simplify means we need to simplify the like terms.
Let's see what a like term is.
If we have the same variable with the same exponent, then they are called like terms.
The constants are the like terms, we can simplify them.
Examples:
2xy, -3xy are the like terms
are like terms
4, 5, -7, 8 are the like terms.
In the given expression 9 + 7 + n
The like terms are 9 and 7. There are in the operation of addition. So we can add them.
So, 9 + 7 + n
= 16 + n
This can be written as n + 16 by commutative property of addition.
Therefore, the answer is B) n + 16
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Answer:
Step-by-step explanation:
The <em>transpose of a matrix </em> is one where you swap the column and row index for every entry of some original matrix
. Let's go through our first matrix row by row and swap the indices to construct this new matrix. Note that entries with the same index for row and column will stay fixed. Here I'll use the notation
and
to refer to the entry in the i-th row and the j-th column of the matrices
and
respectively:
Constructing the matrix from those entries gives us
which is option a. from the list.
Another interesting quality of the transpose is that we can geometrically represent it as a reflection over the line traced out by all of the entries where the row and column index are equal. In this example, reflecting over the line traced from 2 to 1 gives us our transpose. For another example of this, see the attached image!
