Hot air balloons generally descend at a rate of 200 to 400 feet per minute. four balloons descend 200 feet per minute for 9 minutes. find the total change in altitude for all 4 balloons.

Step-by-step explanation:

Given : Hot air balloons generally descend at a rate of 200 to 400 feet per minute.

Also, Four balloons descend 200 feet per minute for 9 minutes.

Then, the total change in altitude for all 4 balloons will be :-

Hence, the total change in altitude for all 4 balloons will be : Balloon descends 18 feet in 4 minutes.

yes. we do proportions in probabilities.

step-by-step explanation:

1. practice, practice & more practice

2. review errors

3. master the key concepts

do not try to memorise the processes.

4. understand your doubts.

5. create a distraction free study environment

6. create a mathematical dictionary

7. apply maths to real world problems.