Question

The first term of an arithmetic sequence is 10 and the common difference is 5. Find the value of the 30th term.

Answer 1

a₃₀ = 155

Explanation:

the nth term of an arithmetic sequence is

`a_(n)` = a₁ + (n - 1)d

where a₁ is the first term and d the common difference

here a₁ = 10 and d = 5 , then

a₃₀ = 10 + (29 × 5) = 10 + 145 = 155