Question

a=12 an=20 n=5 d=?
please answer fast​

Answer 1

Step-by-step explanation:

the correct answer for the given question

Answer 2

Given :

Last term, an = 20

First term, a = 12

Nth term, n = 5

To find :

Common difference, d = ?

Solution :

We know that,

» A sequence in which each term differs from its preceding term by a constant is called an arithmetic progression, known as AP.

Formula : aₙ = a + (n - 1) × d

Here,

• aₙ = Last term
• a = First term
• n = nth term
• d = Common difference.

By Substituting all the given values in the formula,

➙ 20 = 12 + (5 - 1) × d

➙ 20 = 12 + 4 × d

➙ 20 - 12 = 4 × d

➙ 8 = 4 × d

➙ 8 = 4d

➙ d = 8/4

➙ d = 2

Thus, the common difference of an AP is 2$.$