![subject](/tpl/images/cats/mat.png)
Mathematics, 05.07.2019 04:40 madisonsessums8
For his science project, austin wants to determine if the ph of standing rainwater changes over time. he collects rainwater and distributes it evenly in 5 jars and places them all indoors in a spot that does not receive a lot of sunlight to limit evaporation. using a ph testing kit, he measures the ph of the water in the first jar on the 4th day, second jar on the 8th day, third jar on the 12th day, fourth jar on the 16th day and fifth jar on the 20th day. what is the independent, or manipulated, variable in austin’s experiment? a the number of days the rainwater is allowed to sit b the amount of sunlight c the change in the amount of rainwater due to evaporation d the change in ph of the rainwater over time
![ansver](/tpl/images/cats/User.png)
Answers: 1
Another question on Mathematics
![question](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 23:00
The value of cos 30° is the same as which of the following?
Answers: 1
![question](/tpl/images/cats/mat.png)
Mathematics, 22.06.2019 02:00
87.5% , 100% , 83.33 , 93.33% , 100% , 82.5% are all the academic points i've gotten this quarter. what's my final grade?
Answers: 1
![question](/tpl/images/cats/mat.png)
Mathematics, 22.06.2019 03:10
Which function has an inverse that is also a function? a.{(-4,3), (-2, 7), (-1,0), (4, -3), (11, -7)} b.{(-4, 6), (-2, 2), (-1, 6), (4,2), (11, 2)} c.{(-4,5), (-2, 9), (-1,8), (4, 8), (11,4)} d.{(-4,4), (-2, -1), (-1,0), (4, 1), (11, 1)}
Answers: 3
![question](/tpl/images/cats/mat.png)
You know the right answer?
For his science project, austin wants to determine if the ph of standing rainwater changes over time...
Questions
![question](/tpl/images/cats/istoriya.png)
History, 06.05.2020 20:32
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/ekonomika.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/fizika.png)
![question](/tpl/images/cats/health.png)
Health, 06.05.2020 20:32
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 06.05.2020 20:32
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/biologiya.png)
Biology, 06.05.2020 20:32
![question](/tpl/images/cats/mat.png)
Mathematics, 06.05.2020 20:32
![question](/tpl/images/cats/biologiya.png)
Biology, 06.05.2020 20:32
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 06.05.2020 20:32
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/geografiya.png)
Geography, 06.05.2020 20:32
![question](/tpl/images/cats/biologiya.png)
Biology, 06.05.2020 20:33