![subject](/tpl/images/cats/mat.png)
Mathematics, 06.05.2020 00:30 mandy9386
If a substance decays at a rate of 25% every 10 years, how long will it take 512 grams of the substance to decay to 121.5 grams
![ansver](/tpl/images/cats/User.png)
Answers: 1
![](/tpl/images/ask_question.png)
![](/tpl/images/ask_question_mob.png)
Another question on Mathematics
![question](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 15:30
Kylie explained that (-4x+9)^2 will result in a difference of squares because (-4x+9)^2 (-4x+9)^2 =(-4x)^2+(9)^2=16x^2+81
Answers: 3
![question](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 18:30
Apsychology student wishes to investigate differences in political opinions between business majors and political science majors at her college. she randomly selects 100 students from the 260 business majors and 100 students from the 180 political science majors. does this sampling plan result in a simple random sample? why or why not? no, because each group of 200 students in the sample does not have the same chance of being selected. yes, because each group of 200 students in the sample has the same chance of being selected. no, because each individual student does not have an equal chance of being selected. yes, because each individual student has the same chance of being selected.
Answers: 1
![question](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 19:30
Asurvey of 2,000 doctors showed that an average of 3 out of 5 doctors use brand x aspirin.how many doctors use brand x aspirin
Answers: 1
![question](/tpl/images/cats/mat.png)
You know the right answer?
If a substance decays at a rate of 25% every 10 years, how long will it take 512 grams of the substa...
Questions
![question](/tpl/images/cats/istoriya.png)
History, 23.05.2020 06:58
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/en.png)
English, 23.05.2020 06:58
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 23.05.2020 06:58
![question](/tpl/images/cats/mat.png)
Mathematics, 23.05.2020 06:58
![question](/tpl/images/cats/mat.png)
Mathematics, 23.05.2020 06:58
![question](/tpl/images/cats/istoriya.png)
History, 23.05.2020 06:58
![question](/tpl/images/cats/mat.png)
Mathematics, 23.05.2020 06:58
![question](/tpl/images/cats/mat.png)
Mathematics, 23.05.2020 06:58
![question](/tpl/images/cats/User.png)
Engineering, 23.05.2020 06:58
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 23.05.2020 06:58
![question](/tpl/images/cats/geografiya.png)
Geography, 23.05.2020 06:59
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 23.05.2020 06:59
![question](/tpl/images/cats/mat.png)