Question

Use the matrices to answer the question.

Which matrices can be added together?
(Points : 1)
A: R and S
B: K and T
C: S and T
D: T and R

Answer 1

in order to be added, matrices must have the same dimension.

Answer 2

which ones have the same dimension?

Answer 3

See Im having a hard timw with that :/

Answer 4

the dimension is just this:

(number of rows)by(number of columns)

R has 4 rows and 2 columns so it's dimension is 4 x 2 (read as four by two).

Answer 5

Ohh see im thinkin it would be D?

Answer 6

you'd be thinking wrong. sorry. check again...

Answer 7

what is the dimension of K?

Answer 8

2 Rows 2 Columns?

Answer 9

yep so it is a 2 x 2 matrix.

What about S?

Answer 10

S is 2 Rows 4 Columns

Answer 11

So the Answer R and S?

Answer 12

No, R is 4 x 2... S is 2 x 4. the numbers have to be the same and in the same order.

R has 4 rows but S only has 2. They don't have the same dimension.

Answer 13

It's always Rows by Columns

Answer 14

So K and T?

Answer 15

What's the dimension of each?

Answer 16

I put in the picture

Answer 17

I put them* in the picture

Answer 18

i know but i'm asking you the dimensions of each. I know what they are i'm just checking that you know.

Answer 19

My computer is super slow anit takes forever to write