Apicture is photocopied by using a scale factor of 2. each side of the photocopy of the picture is
enlarged by a factor of 2.
enlarged by a factor of one-half.
reduced by a factor of 2.
reduced by a factor of one-half.

Each side of the photocopy of the picture is  enlarged by a factor of 2.

Step-by-step explanation:

A picture is photocopied by using a scale factor of 2.

This actually means that the dimensions of the picture are multiplied by a factor 2.

For example, if the width and the height of a photograph are w and h respectively and when photocopied by using a scale factor of 2, then the final width and height of the copy will become 2w and 2h.

Hence, each side of the photocopy of the picture is enlarged by a factor of 2. (Answer)

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