Please i need the answer for all of them question

1: B

2:D

3:C

4:D

Step-by-step explanation:

1. B

2. D

3. C

4. D

Step-by-step explanation:

solution:

→c= a b , that is product of a and b is possible only when when a is m × n matrix and b is n × p matrix.

that is, number of columns of a= number of rows of b.

so, size of matrix , c= a b is , if a = (m × n)matrix

b= (n × p)matrix

then a b = [ (m × n)matrix] ×[   (n × p)matrix ]

→→c= a b= [m × p ] matrix

→→size of product a b will be equal to = number of rows of a × number of columns of b

alright well the answers to your question is

2xy/9 hope this have a nice day : )

step-by-step explanation: