![subject](/tpl/images/cats/mat.png)
Mathematics, 09.04.2021 20:50 jetblackcap
Robert has x books. Marie has twice as many books as Robert has. Together they have 18 books. Which of the following equations can be used to find the number of books that Robert has?
![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
Which is the equation of an ellipse with directrices at x = ±4 and foci at (2, 0) and (−2, 0)?
Answers: 3
![question](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 23:00
Solve the system of equations using the linear combination method. {4x−3y=127x−3y=3 enter your answers in the boxes.
Answers: 1
![question](/tpl/images/cats/mat.png)
Mathematics, 22.06.2019 02:00
Choose the right classification of 5x + 3x^4 - 7x^3 + 10 by number terms and he degree 1. third degree polynomial 2. fourth degree polynomial 3. sixth degree polynomial 4. first degree binomial
Answers: 1
![question](/tpl/images/cats/mat.png)
You know the right answer?
Robert has x books. Marie has twice as many books as Robert has. Together they have 18 books. Which...
Questions
![question](/tpl/images/cats/himiya.png)
Chemistry, 15.04.2021 23:40
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/obshestvoznanie.png)
Social Studies, 15.04.2021 23:40
![question](/tpl/images/cats/istoriya.png)
History, 15.04.2021 23:40
![question](/tpl/images/cats/es.png)
Spanish, 15.04.2021 23:40
![question](/tpl/images/cats/obshestvoznanie.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 15.04.2021 23:40
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/fizika.png)
![question](/tpl/images/cats/es.png)
![question](/tpl/images/cats/User.png)
Engineering, 15.04.2021 23:40
![question](/tpl/images/cats/es.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 15.04.2021 23:40
![question](/tpl/images/cats/fizika.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 15.04.2021 23:40
![question](/tpl/images/cats/ekonomika.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 15.04.2021 23:40
![question](/tpl/images/cats/biologiya.png)