Solve the system by substitution.
y = 2x
3x + 2y = 21...
![ansver](/tpl/images/cats/User.png)
Answers: 2
![](/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 17:00
According to modern science, earth is about 4.5 billion years old and written human history extends back about 10,000 years. suppose the entire history of earth is represented with a 10-meter-long timeline, with the birth of earth on one end and today at the other end.
Answers: 2
![question](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 18:50
Aresearch group wants to find the opinions’ of city residents on the construction of a new downtown parking garage. what is the population of the survey downtown shoppers downtown visitors downtown workers city residents
Answers: 3
![question](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 22:30
I’ve been trying all day to figure this puzzle out. i need the work for it aswell. it is a factoring polynomials tarsia. the image is below.
Answers: 3
![question](/tpl/images/cats/mat.png)
Mathematics, 22.06.2019 00:40
The formula for the volume of a right square pyramid is given below, where a is the side length of the base and h is the height.
Answers: 1
You know the right answer?
Questions
![question](/tpl/images/cats/mat.png)
Mathematics, 14.09.2019 01:30
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 14.09.2019 01:30
![question](/tpl/images/cats/mat.png)
Mathematics, 14.09.2019 01:30
![question](/tpl/images/cats/mat.png)
Mathematics, 14.09.2019 01:30
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 14.09.2019 01:30
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 14.09.2019 01:30
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/informatica.png)
Computers and Technology, 14.09.2019 01:30
![question](/tpl/images/cats/mat.png)
Mathematics, 14.09.2019 01:30
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/obshestvoznanie.png)
Social Studies, 14.09.2019 01:30
![question](/tpl/images/cats/geografiya.png)
![question](/tpl/images/cats/informatica.png)
Computers and Technology, 14.09.2019 01:30
![question](/tpl/images/cats/obshestvoznanie.png)
Social Studies, 14.09.2019 01:30