Answer:
a(n) = -9 + 7(n - 1) (Answer a)
Step-by-step explanation:
Each new term is found by adding 7 to the previous term. Thus, the formula will include "+ 7." The first term is -9.
The general formula for an arithmetic sequence is a(n) = a(1) = h(n - 1), where h is the "common difference" (which here is 7).
Thus, the desired formula is a(n) = -9 + 7(n - 1) (Answer a)
Formula- Area = L • W
So...
Length = 18 + 3
Width = 18 + 3
Since you’re adding 18 + 3 for Length AND Width, you’re going to get a sum of 21 for each.
Length = 21
Width = 21
Now you’re gonna want to multiply 21 by itself.
21 • 21 = 21 + 420 = ?
Which leaves you with the final sum of...
Area = 441 yds.
7s-2+3=52 this needs more characters but that’s it
B=7h-2
When h=14 b=96
a=(1/2)b*h
Therefor a=(96*14)/2
a=672cm^2
I think it's the 2 one I'm 76 percent sure