The music for nadia's dance routine lasts for exactly 4 minutes. when nadia dances her routine, she starts with her music and finishes 12 seconds before the music ends. what percent of the time the music is playing is nadia dancing? no algebra plz. you.

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

i pretty sure it is