Question

Please help

What is the value of a23?

[2 1] [1 2 3] [ a11 a12 a13]
[5 3] x [6 7 8] =[ a21 a22 a23]

a.23
b.14
c.39
d.31

Answer 1

First, read the attachment to get an idea about how to multiply two matrices. I am including the link so that you can visit the website to study: http://www.mathwarehouse.com/algebra/matrix/multiply-matrix.php

Answer 2

@jkbo

Answer 3

(5*3)+(3*8) = ?
Check out the online matrix multiplier if you are allowed to use technology in your work.
http://easycalculation.com/matrix/matrix-multiplication.php

Answer 4

15 + 24 = 39 @Directrix sorry I was in the bathroom

Answer 5

Alrighty. That is correct. @jkbo

Answer 6

@Directrix so the answer would be C. 39

Answer 7

Correct. Multiply the second row of the first matrix by the third column of the second matrix. @jkbo

Answer 8

@directrix can you please help me

What is the value of a 11?

[1 3] [5 4] [ a11 a12]
[7 2] x [3 2] =[ a21 a22 ]

A.26
B14
C.25
D.36

Answer 9

a 11 is the element that will be in the first row and first column of the product matrix.

Answer 10

1*5 + 3*3 = ?

Answer 11

5 + 9 = 14

Answer 12

That's what I got.