The following expressions shows a
simplification of a radical with a missing
index.
25.x4•y6 = 5.x2y3
What is the index for this expression?
A. 2
B. 4
au

A is the answer.

Step-by-step explanation:

2 is the index for this expression.

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.