Question

[7,8] [2]
[9 ] help please with this matrix

Answer 1

are you trying to multiply the matrices?

Answer 2

yes bt how would i multiply them?

Answer 3

ooooo ok thnk you

Answer 4

ooops sorry. my bad.
that is wrong

Answer 5

how?

Answer 6

http://www.mathwarehouse.com/algebra/matrix/multiply-matrix.php

there are examples on there.

Answer 7

ok thnx

Answer 8

1x2 matrix multiplied by a 2x1 matrix gives a 1x1 matrix.

so the answer is
7 x 2 + 8 x 9 = 14+72 = [86]

Answer 9

so how would i do it if i was multiplying a 2x3 matrix to a 3x2 matrix

Answer 10

you would get a 2x2 matrix.
see that link. press next button in each problem. they show the steps.

Answer 11

ok