Note: we use m, etc. to denote u, v, w, etc. and r to denote r. question 1 suppose a and b are 3 x 3 matrices. show that if b is obtained from a by adding 100 times the first row of a to the last row of a det (b) then det (a) = question 2 suppose a and b are 3 x 3 matrices. prove that (i) (a+bt-rt + at

question 1 is 8, question 2 is 9, question 3 is 24

step-by-step explanation:

now, the numbers they give you at the top are the key. from there, you just have to plug and chug! let's try 1, 2, and 3!

key: a=3, b=5, c=6

1. a+5

remember, a=3, so we plug that in to get 3+5=8

2. 15-c

c=6, so we plug that in to get 15-6=9

3. 4b

b=6, so we plug it in to get 4*6=24

time to try the rest on your own! if you put the answers below in a comment, i'll check them for you!

hi there!

the answer will be d: 2

6 cm

step-by-step explanation: