Two steamers leave a port on a river at the same time, traveling in opposite directions. Each is traveling 20 mph. How long will it take for them to be 60 miles apart? Complete the table representing the information in the problem.
Rate
20
Time
t
Distance
60
First steamer
Second steamer
20
3
60
60

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.