SOLUTION: You can model the population of a certain city between 1955 and 2000 by the radical function P(x) = 55000*sqrt(x) - 1944. On which year was the population of the city 220,000?
Algebra ->
Rational-functions
-> SOLUTION: You can model the population of a certain city between 1955 and 2000 by the radical function P(x) = 55000*sqrt(x) - 1944. On which year was the population of the city 220,000?
Log On
Question 936117: You can model the population of a certain city between 1955 and 2000 by the radical function P(x) = 55000*sqrt(x) - 1944. On which year was the population of the city 220,000? Answer by TimothyLamb(4379) (Show Source):
You can put this solution on YOUR website! 55000*sqrt(x) - 1944 = 220000
55000*sqrt(x) = 220000 + 1944
sqrt(x) = (220000 + 1944)/55000
(sqrt(x))^2 = ( (220000 + 1944)/55000 )^2
x = ( (220000 + 1944)/55000 )^2
x = 16.2840129375
--
check:
55000*sqrt(16.2840129375) - 1944 = 220000
---
answer:
year = 1955 + 16.2840129375
year = 1971
---
Free algebra tutoring live chat:
https://sooeet.com/chat.php?gn=algebra
---
Solve and graph linear equations:
https://sooeet.com/math/linear-equation-solver.php
---
Solve quadratic equations with quadratic formula:
https://sooeet.com/math/quadratic-formula-solver.php
---
Solve systems of linear equations up to 6-equations 6-variables:
https://sooeet.com/math/system-of-linear-equations-solver.php
---
