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michaelmcgee99
08.02.2021 •
Mathematics
The population P(in thousands) of a certain state in the years 2005 through 2015 can be modeled by P = 76 Int + 560, [5,15]where t represent the year with t = 5 corresponding to 2005. During which year did the population reach 750 thousand?
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Ответ:
first number = 7
second number = 11
Step-by-step explanation:
A first number is 4 less than a second number
f = s - 4
Four times the first number is 6 more than twice the second
4f = 2s + 6
Substitute for f = s - 4
4(s - 4) = 2s + 6
distribute
4s - 16 = 2s + 6
subtract 2s from both sides
2s - 16 = 6
add 16 to both sides
2s = 22
Divide both sides by 2
s = 11
Substitute for s = 11 in
f = s - 4
f = 11 - 4
f = 7