Answers

The Brainliest Answer!
2014-12-25T10:34:01+05:30
an=a+(n-1)d
10=5+2.5n-2.5
10=2.5+2.5n
10=5/2(n+1)
4=n+1
n=3
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2 5 2
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2014-12-25T10:41:12+05:30
A+(n-1) d=10 5+(n-1) 2.5=10 n-1=5÷2.5 n=2+1=3
0
I DID NOT UNDERSTAND!!!!! :( :( :( :( :( :(
n=3