Ome friends are going on a coaster ride at an amusement park. they board their car on a platform that is 10 and one half feet above the ground. the car starts by going up 80 and one half feet. then the car goes down 50 and one fourth feet and comes to a stop. what is the change in height from where the friends started on the platform to where they are when the car stops?

The change in height is 30 1/4 feet.

Solution:

Change in height: h=?

The car starts by going up 80 and one half feet:

h=+80 1/2 feet

Then the car goes down 50 and one fourth feet:

h=80 1/2 feet - 50 1/4 feet

h=80 2/4 feet - 50 1/4 feet

h= 80-50 2/4-1/4 feet

h=30 (2-1)/4 feet

h=30 1/4 feet

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.

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step-by-step explanation: