Question

Matrix A= 8 -2
4 7

Matrix B= 2A. Find b22.

Answer 1

Does A = all of those numbers added

Answer 2

So I need to add all of the number in Matrix A? What do I do with the b22

Answer 3

what i believe is you add all four of the first numbers and then 2 a's equals 1b then multiply 1 b by 22 and that is your answer

Answer 4

is 748 one of the choices

Answer 5

oh okay! Thanks for explaining :) There aren't any choices. I just have to work the problem and show my answer.