Descending means that the hot air balloon's height is changing at a negative rate. Multiply the rate of change per minute by the total amount of minutes.

The total change in altitude is
-960 feet.
Answer:
Step-by-step explanation:
2+1+5-3x4
Answer:

Step-by-step explanation:
Given that both men moves at constant speed on the same trail, the motion equations that describes each motion are, respectively:
Man 1

Man 2

Where x is measure in kilometers and t in hours, respectively.
The time taken for both men to meet each other is:



X - the unit
3x; 4x; 5x - the lengths of the sides
3x + 4x + 5x = 30
12x = 30 |:12
x = 2.5
3x = 3 · 2.5 = 7.5 cm
4x = 4 · 2.5 = 10 cm
5x = 5 · 2.5 = 12.5 cm