Mathematics, 20.01.2021 22:00 missdee7623
Plzzz Select the correct answer.
A system of equations and its solution are given below.
System A
-x-2y=7
5x-6y=-3
solutions:(-3,-2)
Choose the correct option that explains what steps were followed to obtain the system of equations below.
System B
-x-2y=7
-16y=32
A.
To get system B, the second equation in system A was replaced by the sum of that equation and the first equation multiplied by -5. The solution to system B will not be the same as the solution to system A.
B.
To get system B, the second equation in system A was replaced by the sum of that equation and the first equation multiplied by 3. The solution to system B will be the same as the solution to system A.
C.
To get system B, the second equation in system A was replaced by the sum of that equation and the first equation multiplied by -6. The solution to system B will not be the same as the solution to system A.
D.
To get system B, the second equation in system A was replaced by the sum of that equation and the first equation multiplied by 5. The solution to system B will be the same as the solution to system A.
Answers: 2
Mathematics, 21.06.2019 19:10
The linear combination method is applied to a system of equations as shown. 4(.25x + .5y = 3.75) → x + 2y = 15 (4x – 8y = 12) → x – 2y = 3 2x = 18 what is the solution of the system of equations? (1,2) (3,9) (5,5) (9,3)
Answers: 1
Mathematics, 21.06.2019 21:00
Julie buys 2kg of apples and 7kg of pears ? 12.70. the pears cost ? 1.30 per kilogram what is the price per kilogram of the apples? show your working out
Answers: 2
Plzzz Select the correct answer.
A system of equations and its solution are given below.
English, 25.04.2021 06:30
Social Studies, 25.04.2021 06:30
Business, 25.04.2021 06:30
Computers and Technology, 25.04.2021 06:30
History, 25.04.2021 06:30
Mathematics, 25.04.2021 06:40
Social Studies, 25.04.2021 06:40
Physics, 25.04.2021 06:40
Mathematics, 25.04.2021 06:40
English, 25.04.2021 06:40
Medicine, 25.04.2021 06:40
Computers and Technology, 25.04.2021 06:40