Answer:
We need to find the first term. We can use the formula
an = a1 + d(n - 1)
to solve for a1. We already know the 12th term, a12, common difference, d, and nth sequence, n.
a12 = -36
d = -4
n = 12
-36 = a1 - 4(12 - 1)
-36 = a1 - 44
8 = a1
The first term is 8. Therefore, your formula is
an = 8 - 4(n - 1)
an = -4n + 12
Then use this formula to graph.
n is the independent variable.
an is the dependent variable.
Your graph will be a line.
n | an
___________
1 8
2 4
3 0
4 -4
5 -8
6 -12
Step-by-step explanation:
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Answer:
I don't understand percentages
I believe it is {sqr(1/8)/2} or 0.5*sqr(1/8)
Width=w
Length=l
Perimeter=p
p=2w+2l
l=20+w
p=2w+20+w+20+w
p=4w+40
4w+40=160
4w=160-40=120
w=120:4=30
w=30
l=20+w
l=20+30=50