Question

The nth term of a sequence is 1/2×n²+10.
which term is the closest to 100?
plz plz plz answer with explanation.
thnx

Answer 1

Answer:

13th Term

Step-by-step explanation:

Tn=n²/2 +10

Acc. to qn

Tx<100

x²/2 + 10< 100

x²/2< 90

x²<180

x<√180

x<13.496

x=13

13th term is closest to 100