pruittjr5161
11.11.2021 •
Mathematics
Use the information to answer the question.
A survey was conducted in two residential communities to find out television channel preferences among the residents. The results are summarized
in the table shown
News
Sports
Music
Soap
Operas
Total
31
10
31
53
125
Residential
Community A
Residential
Community B
45
52
14
14
125
Total
76
62
45
67
250
To the nearest tenth, what percent of everyone surveyed preferred watching sports channels?
OA 16.1%
OB 19.2%
OC 24.8%
O D. 62.00
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Ответ:
thus we shall have:
Sn=ar^n
where:
a=first term
r=common ratio
from the information:
a=30 ft
r=60/100=3/5=0.6
therefore the formula will be
Sn=30(0.6)^n
where n is the number of terms:
thus when n=5 th sum will be:
S5=30(0.6)^5
S5=30(0.6)^5
S5=2.33 ft
2.33 ft