OpenStudy (anonymous):

help please

OpenStudy (anonymous):

http://prntscr.com/16lrnh I selected A

OpenStudy (jack1):

hi, howzit Lily?

OpenStudy (anonymous):

good thanks

OpenStudy (jack1):

sorry, x = 34/5 - (7/5)z y = 11/5 + (2/5)z z - free

OpenStudy (anonymous):

so A is correct

OpenStudy (jack1):

yep, perfect

OpenStudy (anonymous):

OpenStudy (anonymous):

is it D

OpenStudy (anonymous):

@ganeshie8

OpenStudy (ganeshie8):

thats right ! 2x3, 2x2 number of columns of first matrix not equal to number of rows of second matrix. so we cant multuply

OpenStudy (anonymous):

http://prntscr.com/16m7i3 i think its C

OpenStudy (ganeshie8):

use wolfram to confirm ur solution :)

OpenStudy (anonymous):

i tried

OpenStudy (anonymous):

OpenStudy (ganeshie8):

i think so, no solution

OpenStudy (anonymous):

OpenStudy (anonymous):

its A

OpenStudy (anonymous):

OpenStudy (anonymous):

@ash2326

OpenStudy (ash2326):

@LilySwan The order of the matrix is correct. But the element a12 is the second element of the first row, can you find now?

OpenStudy (ash2326):

|dw:1369505321188:dw| You are asked to find A12 which implies element in first row which is also in second column.

OpenStudy (ash2326):

Now I'll mark the columns|dw:1369505497102:dw|