![subject](/tpl/images/cats/mat.png)
Mathematics, 23.04.2020 00:03 neariah24
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 15:00
Cherie measures and records the lengths and sizes of the same style of a sandal found at a shoe store. which equation can be used to determine the approximate shoe size, s, for a foot length of x inches? s = x – 2 s = 2x – 10 s = x + 6 s = 2x + 4
Answers: 3
![question](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 17:30
Let f(x) = x+3 and g(x) = 1/x the graph of (fog)(x) is shown below what is the range of (fog)(x)?
Answers: 2
![question](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 21:00
The? half-life of a radioactive substance is 20 years. if you start with some amount of this? substance, what fraction will remain in 120 ? years
Answers: 1
![question](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 21:50
Free points also plz look my profile and answer really stuff
Answers: 2
You know the right answer?
Which is the best first step when solving the following system of equations?
y = 7 x + 3...
y = 7 x + 3...
Questions
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 10.03.2021 19:20
![question](/tpl/images/cats/fizika.png)
Physics, 10.03.2021 19:20
![question](/tpl/images/cats/mat.png)
Mathematics, 10.03.2021 19:20
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 10.03.2021 19:20
![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/himiya.png)
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/istoriya.png)
History, 10.03.2021 19:20
![question](/tpl/images/cats/en.png)
English, 10.03.2021 19:20
![question](/tpl/images/cats/mat.png)
Mathematics, 10.03.2021 19:20
![question](/tpl/images/cats/obshestvoznanie.png)
Social Studies, 10.03.2021 19:20
![question](/tpl/images/cats/mat.png)