Tina has some ants and worms. there are 20 more ants than worms. altogether, there are 80 insects. let a represent the number of ants and w represent the number of worms. the following system of equations represents this situation: a−20=w a+w=80 how many ants and worms does tina have?

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.