![subject](/tpl/images/cats/mat.png)
Mathematics, 20.05.2020 19:00 greend0719
A water pump takes 70 minutes to fill a tank. A larger pump can fill the same tank in 30 minutes.
How long will it take to fill the tank if both pumps are used?
A. 15 minutes
B. 21 minutes
C. 40 minutes
D. 50 minutes
![ansver](/tpl/images/cats/User.png)
Answers: 3
![](/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 15:00
Let the mean of the population be 38 instances of from 6" - 9" hatchings per nest, and let the standard deviation of the mean be 3. what sample mean would have a confidence level of 95% or a 2.5% margin of error?
Answers: 1
![question](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 15:40
Which of the following represents the zeros of f(x) = 6x3 − 31x2 + 4x + 5? −5, one third , one half 5, − one third , one half 5, one third , − one half 5, one third , one half
Answers: 1
![question](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 18:00
Ijust need to see how to do this. so you don’t have to answer all of them just a step by step explanation of one.
Answers: 3
![question](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 19:00
How many solutions does the nonlinear system of equations graphed bellow have?
Answers: 1
You know the right answer?
A water pump takes 70 minutes to fill a tank. A larger pump can fill the same tank in 30 minutes.
Questions
![question](/tpl/images/cats/fizika.png)
![question](/tpl/images/cats/istoriya.png)
History, 18.10.2020 15:01
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 18.10.2020 15:01
![question](/tpl/images/cats/en.png)
English, 18.10.2020 15:01
![question](/tpl/images/cats/istoriya.png)
History, 18.10.2020 15:01
![question](/tpl/images/cats/mir.png)
![question](/tpl/images/cats/fizika.png)
Physics, 18.10.2020 15:01
![question](/tpl/images/cats/biologiya.png)
Biology, 18.10.2020 15:01
![question](/tpl/images/cats/health.png)
![question](/tpl/images/cats/health.png)
Health, 18.10.2020 15:01
![question](/tpl/images/cats/istoriya.png)
History, 18.10.2020 15:01
![question](/tpl/images/cats/mat.png)
Mathematics, 18.10.2020 15:01
![question](/tpl/images/cats/en.png)
English, 18.10.2020 15:01
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 18.10.2020 15:01
![question](/tpl/images/cats/pravo.png)
![question](/tpl/images/cats/informatica.png)
Computers and Technology, 18.10.2020 15:01
![question](/tpl/images/cats/mat.png)
Mathematics, 18.10.2020 15:01
![question](/tpl/images/cats/mat.png)
Mathematics, 18.10.2020 15:01