Answer:
No not all of them.
Step-by-step explanation:
Triangles can be 2d meaning like a flat triangle.
Answer:
Step-by-step explanation:
Use distributive property. Then use exponent law.
Exponent law used here = 

Answer:
x = -1
Step-by-step explanation:
2(x + 3) - 4 = 0
2x + 6 - 4 = 0
2x + 2 = 0
2x = 0 - 2
2x = -2
x = -2 ÷ 2
x = -1
The vertex will be (1 , 2)
4n-2n=6
2n=6
n=6/2
n=3
Your answer is C. 3