Joella is out shopping and finds a pair of sneakers originally valued at $96 they are now on sale for 75% off what is the new cost

First you gotta divide 75% by 100 in other words move the decimal twice to the left to get .75 then you multiply 96× .75 and you get 72, then you subtract the 72 and and get $24...

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