RipoldSmellypoop47
29.12.2021 •
Mathematics
assume that adults have iq scores that are normally distributed with a mean of and a standard deviation of 15. find the third quartile , which is the iq score separating the top 25rom the others.
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Ответ:
19 years approx
Step-by-step explanation:
Given data
Principal P= $4400
Rate r=7%
Final amount A=$10100
Time t= ???
Let us apply the simple interest expression
A=P(1+rt)
substitute
10100=4400(1+0.07*t)
open bracket
10100=4400+308t
10100-4400=308t
5700=308t
t= 5700/308
t= 18.50
Hence the time is 19 years approx