Answer:
(2, - 4 )
Step-by-step explanation:
Given the 2 equations
x + 2y = - 6 → (1)
3x + y = 2 → (2)
Multiplying (2) by - 2 and adding to (1) will eliminate the term in y
- 6x - 2y = - 4 → (3)
Add (1) and (3) term by term to eliminate y
- 5x = - 10 ( divide both sides by - 5 )
x = 2
Substitute x = 2 into either of the 2 equations and solve for y
Substituting into (1)
2 + 2y = - 6 ( subtract 2 from both sides )
2y = - 8 ( divide both sides by 2 )
y = - 4
Solution is (2, - 4 )
Answer:
A. 90
B. 38
C. 85
Step-by-step explanation:
Answer:
30 degree
Step-by-step explanation:
Mark ‼️ as brainlist ‼️❣️
hope you get ur answer
The answer is A because that information they gave to you
Answer:
Option A is correct.
Step-by-step explanation:
We have to eliminate x from the given system of equations by solving
-6x -4y=2
-4x-7y=2
We can do this by subtracting 3 times the second equation from 2 times the first equation we get
-12x -8y = 2
12x +21y =- 2
Sign of second equation changed because it is getting subtracted
Since, we got same quantity of x with opposite signs
Hence, it will get cancelled and so eliminated.
Therefore, Option A is correct.
