Erin has scanned a 4 × 5-inch postcard, and she wants to reduce it to make a graphic for her web site. she will use a scale factor of 1 in. = 2 cm.

Officer brimberry wrote 24 tickets for traffic violations last week, but only 9 tickets this week. what is the percent decrease? give your answer to the nearest tenth of a percent.

50 ! pls ! 12.  building codes regulate the steepness of stairs. homes must have steps that are at least 13 inches wide for each 8 inches that they rise.

a. discuss how to find the slope of the stairs.
b. describe how changing the width or height affects the steepness of the stairs.

What is the difference between regular convex and concave polygons