Question

Matrix X is shown below.

If matrices X and Y are equal, what is the value of y12+y13+y32+y33?
7.5
27
40
49.5

Answer 1

The answer C, is right!

Explanation:

Answer 2

option C

40

Explanation:

`x_(nm)`

here n = number of row

m = number of column

so the labelled 3x3 matrix would be like this

`y=\left[\begin{array}{ccc}y11&y12&y13\\y21&y22&y23\\y31&y32&y33\end{array}\right]`

Given in the question matrixX since matrixY is eaxctly same as matrixX so,

`y=\left[\begin{array}{ccc}1&6&-7\\-5&0&8.5\\-1&14&27\end{array}\right]`

so

y12 = 6

+

y13 = -7

+

y32 = 14

+

y33 = 27

=

40