Which graph represents the solution set if the compound inequality? -5

-5 < a - 4 < 2

solving for a

a - 4 > - 5

a >  -1    and

a - 4 < 2

a < 6

So the correct solution set is the third one.

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