Due in literally five minutes ali has x pieces of artwork in her art portfolio. jeb has 4 more pieces of artwork. if there are 16 pieces of artwork in all, which equation can be used to determine the value of x?

x + x + 4 = 16

x is Ali

x+4 is jeb

total they has 16

x + x + 4 = 16

2x+ 4 = 16

    -4     -4

2x       = 12

/2            /2

x           =  6  ali

x + 4  = 10  Jeb

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