Question

A pendulum swings such that each swing is 65% the length of the previous swing. Thus, the swings become shorter and shorter. The length of the first swing is 30 inches.
What total distance does the pendulum travel?
18

46

86
93

Answer 1

Hay user 

how is your day going?

hope well

so the answer to this is going to be 


86 inches.


hope this helps 

have a good day 

-nick out

Answer 2

The total distance it travels is 86 inches.

We start out with 30 inches.  Each successive time we add 65% of this.  This can be represented as:

30(0.65)ˣ

When we take the sum of these terms, it approaches 86.