![subject](/tpl/images/cats/mat.png)
Mathematics, 01.03.2021 18:40 gkasshy334
DDT is a toxic agricultural chemical that was used in the United States before it was banned in 1972. DDT has a half-life of 15 years. That means that it takes 15 years for one half of a quantity of DDT to degrade into a different, harmless chemical. Suppose an environmental scientist in 2015 measured 9 grams of DDT in a soil sample taken from land where DDT was once heavily used. The scientist modeled the amount of DDT in the soil, d, with the function d(t) = 9(0.5)t . She indicated in her notes that t represented the number of half-lifes since 2015. *Remember a half-life is 15 years. Part A) Find d(0) . What might this value represent in this context? Part B) Find d(1) and d(2) . What might these values represent in this context?
![ansver](/tpl/images/cats/User.png)
Answers: 3
![](/tpl/images/ask_question.png)
![](/tpl/images/ask_question_mob.png)
Other questions on the subject: Mathematics
![image](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 13:00, makaylahunt
Liesl grew 7/12 of a foot in one year. her little sister grew 1/3 of a foot during that same year. how much more did liesl grow than her little sister did
Answers: 2
![image](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 15:00, amber665
The blue whale is the largest animal living on the earth. the average blue whale measures 100 feet long (30 meters) and weighs 300,000 pounds (136,000 kilograms). a whale’s head is 1⁄3 of the length of its body. a new baby whale is 1⁄4 the length of a grown whale. the average man is 1⁄17 the length of a blue whale, and 1⁄1,818 its weight. a human baby measures 1⁄4 of the length of an adult. calculate the following information: how long is a whale’s head? how long is a new baby whale? how tall is the average man? how much does the average man weigh? how tall is the average human baby?
Answers: 1
![image](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 16:00, ramirezzairap2u4lh
Data are collected to see how many ice-cream cones are sold at a ballpark in a week. day 1 is sunday and day 7 is the following saturday. use the data from the table to create a scatter plot.
Answers: 2
You know the right answer?
DDT is a toxic agricultural chemical that was used in the United States before it was banned in 1972...
Questions in other subjects:
![Konu](/tpl/images/cats/en.png)
![Konu](/tpl/images/cats/fizika.png)
![Konu](/tpl/images/cats/biologiya.png)
![Konu](/tpl/images/cats/mat.png)
Mathematics, 01.07.2020 21:01
![Konu](/tpl/images/cats/mat.png)
![Konu](/tpl/images/cats/himiya.png)
![Konu](/tpl/images/cats/mat.png)
![Konu](/tpl/images/cats/en.png)
![Konu](/tpl/images/cats/mat.png)