The path of a rotating fan has a diameter of about 18 inches and a circumference of about 56 inches. the path of a smaller model of the fan has a circumference of about 9 inches. what is the diameter of the rotation path of the smaller model?

arithmetic sequence

step-by-step explanation:

given that a sequence has terms as

19, 15, 11,

this is represented on a graph

the pattern indicates that the sequence is an arithmetic sequence with i term

a=19 and common difference d =-4

any general term

thus the sequence is reduced by 4 for each successive term starting from 1 and nth term is

24-5n.

first negative term would start after 5th term

5th term =24-25< 0

from 5th term onwards the sequence would be negative.