Question

Find the first five terms for the following arithmetic sequence Tn=5n-6?

Answer 1

Answer:

The first five terms are -1,4,9,14 and 19.

Step-by-step explanation:

The arithmetic sequence is :

$T_n=5n-6$

We need to find the first five terms of the sequence.

Put n = 1 for first term.

$T_1=5(1)-6=-1$

Put n = 2 for second term.

$T_2=5(2)-6=\\\\=10-6\\\\=4$

Put n = 3 for third term.

$T_3=5(3)-6=\\\\=15-6\\\\=9$

Put n = 4 for fourth term.

$T_4=5(4)-6=\\\\=20-6\\\\=14$

Put n = 5 for fifth term.

$T_3=5(5)-6=\\\\=25-6\\\\=19$

Hence, the first five terms are -1,4,9,14 and 19.