Asked by willa
Thge function D(x) models the cumulative number of deaths from a disease x years after 1984. Estimate the year when ther were 89,000 deaths. D(x) = 2386x^2 +5147x + 5398. there were approximately 89,000 deaths in the year?
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Anonymous
D(x)=2386x^2+5147x+5398=89000
2386x^2+5147x+5398-89000=0
2386x^2+5147x-83602=0
If you don't know solve that equation in google type:
quadratic equation online
When you see list of results click on:
Free Online Quadratic Equation Solver:Solve by Quadratic Formula
When page be open in rectangle type:
2386x^2+5147x-83602=0
and click option solve it.
You will see solution step by step.
4.94 approx = 5
Approximately the year=1984+5=1989
2386x^2+5147x+5398-89000=0
2386x^2+5147x-83602=0
If you don't know solve that equation in google type:
quadratic equation online
When you see list of results click on:
Free Online Quadratic Equation Solver:Solve by Quadratic Formula
When page be open in rectangle type:
2386x^2+5147x-83602=0
and click option solve it.
You will see solution step by step.
4.94 approx = 5
Approximately the year=1984+5=1989
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