Sorry to the people who were me earlier, but i actually don't get this one. i really need if anyone could with this. what is the reciprocal of 7/12? 1. -12/7 2.-7/12 3.7/12 4.12/7 if you could teach me about this that would be the best and you would be very and make my day!

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

answer: 1, 3 and 5 are correct

step-by-step explanation: