The first term of an arithmetic sequence is -5, and the tenth term is 13.
1 answer:
Answer:
The common difference is 2
Step-by-step explanation:
The formula for an arithmetic sequence is
an = a1+d(n-1)
a1 = -5
a10 = 13
Substituting n=10 a10=13 and a1 =-5
13 = -5 +d (10-1)
13 = -5 +9d
Add 5 to each side
13+5 = -5+5 +9d
18 = 9d
Divide each side by 9
18/9 = 9d/9
2 =d
You might be interested in
Answer:
10,38,43
Step-by-step explanation:
n+4n-2+5n-7=91
10n=91+2+7
10n=100
n=10
4(10)-2=38
5(10)-7=43
if anything is unclear, ask freely.
B, d, e, f
they all equal 64
Answer:
Not sure what you're asking but 120.4 is
one hundred
two tens
and four tenths
Answer:
c
Step-by-step explanation:
If you do not mind me asking, what did Seth write? Us helpers cannot answer it if we do not have the full question. I apologize if this seems rude.
