A garden is 15 feet long by 5 feet wide. The length and width of the garden wi each be increased by the same number of feet. This expression represents the perimeter of the larger garden: (x + 15) + (x + 5) + (x + 15) + x (x + 5)

Which expression is equivalent to the expression for the perimeter of the larger garden?

Select ALL that apply.

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