127.5° is the answer please mark brainliest
Answer: 10
Why?
3*9+2y=47
3*9= 27
27+2y=47
47-27= 20
2y=20
20/2=10
Y=10
Hope this helps :D
Answer:
B. -7 + 8n
Step-by-step explanation:
-3.5(2 + -3n) + -2.5n = 0
(2 * -3.5 + -3n * -3.5) + -2.5n = 0
(-7 + 10.5n) + -2.5n = 0
0.5n + -2.5n = 8n
-7 + 8n
Answer:
The first one, the second, and fourth one are correct.
Select A,B, and D.
ED2021
Hello!
Elimination is where you add or subtract two equations to get rid of a variable
(5x + 5y = -5) + (5x - 5y = 25)
This gives us 10x = 20
Divide 10 from both sides
x = 2
We can put x in to one of the original equations to get y
5(2) + 5y = -5
Combine like terms
10 + 5y = -5
Subtract 10 from both sides
5y = -15
divide both sides by 5
y = -3
The answer to the first one is (2, -3)
For the second one we can subtract the equations
(2x - 3y = 0) - 2x + y = 8
This gives us 4y = 8
Divide by 4 on both sides
y = 2
We can put y into one of the original equations to get x
2x + 2 = 8
subtact 2 from both sides
2x = 6
Divide both sides by 2
x = 3
The answer to the second one is (3,2)
Hope this helps!
