Answer asap please!!

Sorry didn't know everything

Step-by-step explanation:

1. b

2.

3. f

4. H

5.a

6.c

7.d

8.

9.

10. I

1. x= 3

2. x= -30

3. x= 31/3

4. x= -3

5. x= 2

6. x= -24

7. x= -5

8. x= -55

9. x= -2

10. x= 4

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