The first several steps of evaluating (−2) (3 4 7 ) are shown, including the distributive property. (−2) (3 4 7 ) = (−2) ( 3 + 4 7 ) = (−2)(3) + (−2) ( 4 7 ) = (−6) + ( −8 7 ) What is (−2) ( 3 4 7 ) ? Negative 7 and StartFraction 1 over 7 EndFraction Negative 6 and StartFraction 6 over 7 EndFraction Negative 2 and StartFraction 3 over 7 EndFraction Negative 1 and StartFraction 2 over 7 EndFraction

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

you'll have to attache the image of the bar graph in order for us to answer : )

step-by-step explanation: