![subject](/tpl/images/cats/mat.png)
Mathematics, 07.12.2021 19:20 isahbellas
A recent Harvard study concluded that people who drink coffee tend to
live longer than those who don't drink coffee. The study followed more
than 20,000 nurses and doctors over a 30-year period, giving them
frequent questionnaires to answer about their coffee habits. Researchers
found that people who drank 3 to 5 cups of coffee a day had a mortality
rate during the study that is 15% lower than those who did not drink
What is the explanatory and response variable and what kind of study is it
![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 15:20
Compare the subtraction problems 6/8 - 5/8 = 1/8 and 6/9 - 7/9 = 1/9 why is the answer to the first problem positive and the answer to the second problem negative
Answers: 1
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 18:50
The first few steps in solving the quadratic equation 9x2 + 49x = 22 ? 5x by completing the square are shown. 9x2 + 49x = 22 ? 5x 9x2 + 54x = 22 9(x2 + 6x) = 22 which is the best step to do next to solve the equation by completing the square? 9(x2 + 6x + 3) = 25 9(x2 + 6x + 3) = 49 9(x2 + 6x + 9) = 31 9(x2 + 6x + 9) = 103
Answers: 3
![question](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 21:00
You have 12 balloons to blow up for your birthday party. you blow up 1/3, and your friend blows up 5 of them. what fraction of the baloons still need blowing up
Answers: 1
You know the right answer?
A recent Harvard study concluded that people who drink coffee tend to
live longer than those who d...
Questions
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/ap.png)
Advanced Placement (AP), 31.07.2019 13:00
![question](/tpl/images/cats/mat.png)
Mathematics, 31.07.2019 13:00
![question](/tpl/images/cats/en.png)
English, 31.07.2019 13:00
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 31.07.2019 13:00
![question](/tpl/images/cats/health.png)
Health, 31.07.2019 13:00
![question](/tpl/images/cats/health.png)
Health, 31.07.2019 13:00
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/fizika.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 31.07.2019 13:00
![question](/tpl/images/cats/mat.png)
Mathematics, 31.07.2019 13:00
![question](/tpl/images/cats/obshestvoznanie.png)
Social Studies, 31.07.2019 13:00
![question](/tpl/images/cats/himiya.png)
Chemistry, 31.07.2019 13:00