## toxicsugar22 5 years ago Dichloro is a pesticide that was used in the middle decades of the 20th century to control maleria. Afterr 1945, it was also widely used on crops in the U, and as much as one ton be sprayed on a single cotton field. Hoowever after the toxic, effects of Dichloro on the evvironment began to appear, the chemical was banned in 1972. A common estimate for the half-life in the soil is 15 years. Write a decay law for Dichloro in the soil and use A for the initial concentration of Dicloro, and use t for the input variable

1. dumbcow

$y=Ae ^{-\frac{\ln 2}{15}t}$ is that not correct?

2. toxicsugar22

no i dont think so do u know if that is corecct

3. toxicsugar22

$Ae^-In2/15^t$

4. dumbcow

well i know that will yield 1/2A after 15 years, if thats what the question is asking

5. toxicsugar22

$y=Ae^(In2/15^t)$

6. dumbcow

um the exponent on the e is -ln(2)/15 times t

7. toxicsugar22

$y=Ae^(-In2/15^t)$

8. toxicsugar22

i can to do it

9. toxicsugar22

hw do I cut and copy what u did, i mean the equation

10. toxicsugar22

or copy and paste

11. dumbcow

copy and paste into word then highlight exponent part and superscript it

12. toxicsugar22

no it didnt work

13. toxicsugar22

can u send it to me on here?

14. toxicsugar22

y=Ae ^{-\frac{\ln 2}{15}t}

15. toxicsugar22

how do u type this equation

16. toxicsugar22

idk

17. dumbcow

can you insert equations in word, it works just like the equation editor on here

18. dumbcow

you might have to have word 07

19. toxicsugar22

ok

20. dumbcow

go to insert tab and click on equations

21. toxicsugar22

where that

22. toxicsugar22

like how did u do your equation

23. toxicsugar22

can u tell me

24. toxicsugar22

because when i do it it turns out wrong

25. toxicsugar22

and can u hurry up please

26. dumbcow

27. toxicsugar22

ok i opened it and it wont let me copy and paste, it just show a maginify glass and i dk how to make it go away

28. toxicsugar22

do u have any idea

29. dumbcow

click on it to zoom in no you cant copy but thats to give you an idea of how to put it into word yourself

30. dumbcow

look on far upper right it has pi symbol and Equation, if you have that click on it and you enter that exact equation

31. toxicsugar22

but ii keeps showing me a maginer and it wont go away

32. toxicsugar22

how do i get rid of it

33. toxicsugar22

does that happen to you

34. dumbcow

yes its for zooming in/out you cant click on anything i just gave you a picture of my screen with word open word on your computer and find same screen click on equations

35. toxicsugar22

THANKS

36. dumbcow

welcome

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