http://prntscr.com/16lrnh I selected A
hi, howzit Lily?
sorry, x = 34/5 - (7/5)z y = 11/5 + (2/5)z z - free
so A is correct
is it D
thats right ! 2x3, 2x2 number of columns of first matrix not equal to number of rows of second matrix. so we cant multuply
http://prntscr.com/16m7i3 i think its C
use wolfram to confirm ur solution :)
i think so, no solution
@LilySwan The order of the matrix is correct. But the element a12 is the second element of the first row, can you find now?
|dw:1369505321188:dw| You are asked to find A12 which implies element in first row which is also in second column.
Now I'll mark the columns|dw:1369505497102:dw|