A picture frame has 3 1/2 cm wide. Size of the photo to be framed us 20 × 15 cm.
Find the breadth and length of the frame.

Describe the symmetry of the figure. identify lines of symmetry, if any. find the angle and the order of any rotational symmetry.

Find the slope of the line below . enter your answer as a fraction or decimal. use a slash mark ( / ) as the fraction bar if necessary

Standard deviation of 19,29,21,22,23