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An elevator starts at the lobby and makes 44 stops. The positive numbers stand for going up, and the negative numbers stand for
going down. Which expression gives the total number of floors traveled during the 44 stops?
a.|9+-12+5+8|
b.9-12+5-8
c.|9|+|12|+|5|+|-8|
d.|(+9)+(-12)+(+5)+(-8)|
a.|9+-12+5+8|
b.9-12+5-8
c.|9|+|12|+|5|+|-8|
d.|(+9)+(-12)+(+5)+(-8)|
2 answers:
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Answer:
symmetric matrix is the square matrix and it is equal to its transpose
Step-by-step explanation:
solution
a symmetric matrix is the square matrix and it is equal to its transpose
As A is symmetric matrix then
A =
here only square matrices will be symmetric
and matrix A is symmetric its mean its matrices have equal dimension
and every square diagonal matrix is also symmetric when all off diagonals element is zero
symmetric matrix for all indices i and j
A = aij = aji