Question

Identify the 19th term of the arithmetic sequence 5, 16, 27 …

Answer 1

Use the given formula:\[\rm a_n = a_1 + (n - 1)d \]

Answer 2

Yes i am having trouble what n would be

Answer 3

a19=5+(n-1)11

Answer 4

They are asking for 19th term, so \(\rm n = 19\).

Answer 5

\[\rm a_{19} = 5 + (19 - 1)\times 11\]

Answer 6

\[\rm = 5 + (18\times 11)\]

Answer 7

5+(198)

Answer 8

Yes.

Answer 9

OH okay i see. So n and a= are the same?

Answer 10

“a” is just the name of that sequence.

Answer 11

So, \(\rm a_{19}\) reads, “nineteenth term of the sequence \(\rm a\)”

Answer 12

You could name the sequence anything. You could name it \(\rm s\) too.

Answer 13

But people mostly use \(\rm a\) for sequences. lol

Answer 14

oh okay thank you!!

Answer 15

You're welcome!

Answer 16

ParthKohli*

Answer 17

lol