theman300045
06.10.2020 •
Mathematics
It takes 3.5 minutes to upload 12 photographs from a smart phone to a computer and then an additional 1.25 minutes to upload the photographs to a website. At this rate, about how long will it take to upload 20 photographs from a smart phone to a computer and then to a website?
A. about 7.2 minutes
B. about 5.8 minutes
C. about 2.1 minutes
D. about 7.9 minutes
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Ответ:
Step-by-step explanation:
we know that
The correlation coefficient r is a number between
and 
calculated so as to represent the linear dependence of two variables or sets of data.
Using a Excel tool -----> (CORREL function)
see the attached table
The correlation coefficient r is equal to