There are approximately one billion smartphone users in the world today. In the United States, the ages of smartphone users follow approximately normal distribution with the mean of 36.9 years and the standard deviation 13.9 years. Find the percent of all smartphone users whose age is above 50 years old. Group of answer choices 16.4% 17.3% 82.7% None of these answers. 94.2%

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.

answer:   x = 3 + √11     and     x = 3 - √11

step-by-step explanation:

x² - 6x + 9 = 11

(x - 3)² = 11

x - 3 = ±√11

    x = 3 ± √11

x = 3 + √11     and     x = 3 - √11

16 is the absolute value

step-by-step explanation: