∈ means '(is) an element of'
For instance, 'Let a ∈ A' means 'Let a be an element of A'
http://en.wikipedia.org/wiki/Element_(mathematics) might help you too
9 × 9 would be the answer or just 9. Since 9 × 9 = 81. So, I believe you could put 9 if there is only one x spot but if there is 2 you can put 9 × 9. Hope this helps! c:
Answer:
If you can draw one straight line through a polygon and cross more than two sides, the polygon is concave - A.
Answer:
y=-1/2x+1
Step-by-step explanation:
2x+4y=16
4y=-2x+16
y=-1/2x+4
y=mx+b, m=-1/2, x=4, y=-1
-1=(-1/2)(4)+b
-1=-2+b
1=b
y=-1/2x+1
Answer:
D: g(x)=(x + 4)2+ 6 so yeah it's d