Pers in the Real World
Emilia spends an average of 45 minutes each school
day practicing the clarinet. The table shows the
difference between her average practice time and the
actual time she spent practicing this week.
The correct order of the days based on the values of the
differences from least to greatest is

Find the ratios of the corresponding sides

How can you find the mean absolute deviation (mad) for this set of data?

Statement reason 1. δabc is similar to δced. given 2. 3. definition of slope 4. slope of slope of definition of slope 5. slope of × slope of multiplying the slopes 6. slope of × slope of substitution property of equality 7. slope of × slope of simplifying the right side the table contains the proof of the relationship between the slopes of two perpendicular lines. what is the reason for statement 2? a. parallel line segments that meet a common perpendicular line are proportional in length. b. the lengths of vertical and horizontal sides in congruent triangles are in a common ratio. c. trigonometric identities determine the lengths of the legs in a right triangle. d. corresponding side lengths in similar triangles are proportional in length.