use matrices a,b,c and d to find each scalar product sum or difference if possible i an operationis undefined lable it as such I HAVE NO IDEA HOW TO DO THIS

Question

anonymous · Answer

A=(6 1 0 8/ -4 3 7 11) B=(1 3/-2 4) C=(-2 1/ 4 0/ 2 2/ 1 1) D=(5 -2/3 6)

anonymous · Answer

11. 3A
12. B-2A
13.AB
14.BA
15.AC-BD
16.4B-3D

anonymous · Answer

picture please?

anonymous · Answer

there isnt one it just says exactly what i put andd the / mean the are stacked on top of each other not divided

freckles · Answer

kA where k is a constant 
means just multiply all the entries in A by k

anonymous · Answer

futher explain plz