subject
Mathematics, 14.07.2020 21:01 jjxt126

A system of equations and its solution are given below. System A
5x-y=-11
3x-2y=-8
Solution: (-2,1)

To get system B below, the second equation in system A was replaced by the sum of that equation and the first equation in system A multiplied by -2.

System B
5x-y=-11
?

A. The second equation in system B is -7x = 14. The solution to system B will be the same as the solution to system A.

B. The second equation in system B is 7x = 30. The solution to system B will be the same as the solution to system A.

C. The second equation in system B is -7x = 14. The solution to system B will not be the same as the solution to system A.

D. The second equation in system B is 7x = 30. The solution to system B will not be the same as the solution to system A.

ansver
Answers: 2

Another question on Mathematics

question
Mathematics, 20.06.2019 18:04
Any greatly appreciated! you in advance. jody bought 20 shares of amazon at the close price of $121.00. she bought 20 more shares a year later at the price of $127.00. two years later she's sold all of her shares at the price of $133.00. her broker charges $50 for each transaction. after all of these transactions how much money did jody make? a.$65.00b.$5288.00c.$210.00d.$310.00
Answers: 1
question
Mathematics, 21.06.2019 14:30
The floor plan of a room has a scale of 2.5 in.: 35 ft. in the drawing, the length of the room is 8 in. and the width of the room is 6 in. what is the perimeter of the actual room?
Answers: 3
question
Mathematics, 21.06.2019 17:30
If jaime wants to find 60% of 320, which table should he use?
Answers: 1
question
Mathematics, 21.06.2019 18:30
Can someone check if i did this correct. it’s number 4 if you’re wondering.
Answers: 1
You know the right answer?
A system of equations and its solution are given below. System A
5x-y=-11
3x-2y=-8
...
Questions
Questions on the website: 13722360