Answer:
40
Step-by-step explanation:
40 divided by 2 = 20
Answer:
4,374
Explanation:
Given the sequence: 2, 6, 18, ...
If we study the pattern we observe that:

This is a geometric sequence with:
• The first term, a=2
,
• Common Ratio, r=3
The nth term of a geometric sequence is obtained using the formula:

Therefore, the 8th term will be:

The 8th term of the sequence is 4,374.
Answer:
1 6/7
Step-by-step explanation:
Check the picture below.
is simply a 9x9 square, so its perimeter is simply 4*9.
The vertex of the parabola is (0,4), because you can use -b/2a to find the x coordinate a of the vertex. There is no b so b=0 and 0/anything is 0. Then you can plug 0 into the equation to find the y coordinate of the vertex. When you plug in 0 you get 4, so the vertex is (0,4)