SOLUTION: Can someone show me how to work these?
Find the 5th term for each:
1: A1=20, An=1/2A(n-1)+2
2: An=8n-5
3: A1=1/2, An=2A(n-1)
I came up with 35 for #2, but I'm not even s
Algebra.Com
Question 429511: Can someone show me how to work these?
Find the 5th term for each:
1: A1=20, An=1/2A(n-1)+2
2: An=8n-5
3: A1=1/2, An=2A(n-1)
I came up with 35 for #2, but I'm not even sure that's right. These are confusing me!
Thanks!
Answer by vleith(2983) (Show Source): You can put this solution on YOUR website!
you are correct for number 2. Let's do problem 1 and then you can use the same process to do 3.
You are given
and told
So now find
Plug in 2 for n in the given forumula
Now you see this formula contains which you know is 20. So subsitute 20 and solve
Now you have . So now solve for when n=3
you know because you just solved for it above. Plug 12 in for and solve for
Keep doing this process for n = 4 and then again for n=5.
Use the same process for problem 3
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