Mark is solving the following system.
Step 1: He multiplies equation (1) by 7 and adds it to...
![subject](/tpl/images/cats/mat.png)
Mathematics, 22.05.2020 02:04 janyak048janyak048
Mark is solving the following system.
Step 1: He multiplies equation (1) by 7 and adds it to equation (3).
Step 2: He multiplies equation (3) by 2 and adds it to equation (2).
Which statement explains Mark’s mistake?
He added equation (3) instead of equation (2) in step 1.
He did not multiply equation (3) by the same number as equation (1).
He did not eliminate the same variables in steps 1 and 2.
He added equation the equations in step instead of subtracting them.
![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 19:30
When x = 3 and y = 5, by how much does the value of 3x2 – 2y exceed the value of 2x2 – 3y ?
Answers: 2
![question](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 20:30
There are 45 questions on your math exam. you answered 810 of them correctly. how many questions did you answer correctly?
Answers: 3
![question](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 23:10
The input to the function is x and the output is y. write the function such that x can be a vector (use element-by-element operations). a) use the function to calculate y(-1.5) and y(5). b) use the function to make a plot of the function y(x) for -2 ≤ x ≤ 6.
Answers: 1
![question](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 23:30
What is the volume of a rectangular crate that has dimensions 9 inches by 9 inches by 1 feet? 1,458 in.3 121.5 in.3 1,012.5 in.3 36 in.3
Answers: 1
You know the right answer?
Questions
![question](/tpl/images/cats/mat.png)
Mathematics, 01.12.2020 01:00
![question](/tpl/images/cats/fizika.png)
Physics, 01.12.2020 01:00
![question](/tpl/images/cats/mat.png)
Mathematics, 01.12.2020 01:00
![question](/tpl/images/cats/himiya.png)
Chemistry, 01.12.2020 01:00
![question](/tpl/images/cats/mat.png)
Mathematics, 01.12.2020 01:00
![question](/tpl/images/cats/mat.png)
Mathematics, 01.12.2020 01:00
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/obshestvoznanie.png)
Social Studies, 01.12.2020 01:00
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/es.png)
![question](/tpl/images/cats/es.png)
Spanish, 01.12.2020 01:00
![question](/tpl/images/cats/istoriya.png)
History, 01.12.2020 01:00
![question](/tpl/images/cats/ekonomika.png)
![question](/tpl/images/cats/obshestvoznanie.png)
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/biologiya.png)
Biology, 01.12.2020 01:00
![question](/tpl/images/cats/istoriya.png)
History, 01.12.2020 01:00