Question

matrix 2

Answer 1

ihatethisevenmoremore

Answer 2

it is not C

Answer 3

this takes a bit but not too bad
ready?

Answer 4

this is where you say "yeah i am ready even though i hate this even more"

Answer 5

yeah i am ready even though i hate this even more

Answer 6

ok the last line has 1, -2 which means \(z=-2\)

Answer 7

the second to last line has 1, 1, 3 which means \[y+z=3\] we know \(z=-2\) so
\[y-2=3\]or
\[y=5\]

Answer 8

the first line has 1, a, 2, 2 which means
\[x+ay+2z=2\] we know \(y=5\) and \(z=-2\) so we have
\[x+4a+2\times (-2)=2\] or
\[x+5a-4=2\]

Answer 9

solve for \(a\) and get your answer
you can do it or you want help?

Answer 10

oops i meant "solve for \(x\)"

Answer 11

its B? then

Answer 12

yeah B

Answer 13

okay 1 or 2 more then i promise ill let you go :'(

Answer 14

i have to say for someone starting out with matrices this is a dumb question but whatever

Answer 15

yeah i always stay up until 3 to help...

Answer 16

I think its D?

Answer 17

@freckles this one is on you, i always screw this up

Answer 18

C is out

Answer 19

i mean matrix C is out

Answer 20

oh maybe not let me shut up

Answer 21

if we do a m by n times a n by k
the we are cool because this will result in a m by k matrix
you just have to make sure
the inner numbers match if you know what I mean