Which is the best first step when solving the following system of equations?
y = 7 x + 3. y =...
![subject](/tpl/images/cats/mat.png)
Mathematics, 21.03.2020 05:42 corban13
Which is the best first step when solving the following system of equations?
y = 7 x + 3. y = 9 x.
- Multiply the first equation by –7.
- Substitute 9x for y in the first equation.
- Multiply the second equation by Negative 3.
- Substitute 7x for y in the second equation.
![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 18:30
Players on the school soccer team are selling candles to raise money for an upcoming trip. each player has 24 candles to sell. if a player sells 4 candles a profit of$30 is made. if he sells 12 candles a profit of $70 is made. determine an equation to model his situation?
Answers: 3
![question](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 19:30
Complete the solution of the equation. find the value of y when x equals to 28 x+3y=28
Answers: 2
![question](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 21:30
Having a hard time understanding this question (see attachment).
Answers: 2
![question](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 22:30
Find the condition that the zeros of the polynomial f(x) = x^3+3px^2+3px+r may be in a.p.
Answers: 1
You know the right answer?
Questions
![question](/tpl/images/cats/health.png)
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/himiya.png)
![question](/tpl/images/cats/en.png)
English, 06.10.2020 14:01
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/en.png)
English, 06.10.2020 14:01
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/himiya.png)
Chemistry, 06.10.2020 14:01
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/biologiya.png)
Biology, 06.10.2020 14:01
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 06.10.2020 14:01