12=y-3y Combine like terms
12=-2y Divide
y=-6
<h2>
A formula for the nth term in given arithmetic sequence = 0.5(n - 1) or, (n - 1)</h2>
Step-by-step explanation:
Given,
= 0, = 0.5, = 1, = 1.5, ...
To find, a formula for the nth term in given arithmetic sequence = ?
Here, first term (a) = = 0 and
common difference(d) = - = - = 0.5 - 0 = 0.5
We know that,
The nth term of the arithmetic sequence
Put a = 0 and d = 0.5, we get
= 0 +(n - 1)0.5
= 0.5(n - 1) or, (n - 1)
∴ A formula for the nth term in given arithmetic sequence = 0.5(n - 1) or, (n - 1)