Question

Find the value of a 25 - 815 for the AP 6 9 12 15

Answer 1

Here is your answer please give me Brainliest mark.

Answer : 30

Answer 2

Answer:

solution

:-

$a = 6 \\ d = 9 - 6 \\ = > 3 \\ a25 = > a + (n - 1)d \\ = > 6 + (25 - 1)3 \\ = > 6 + (24)3 \\ = > 6 + 72 \\ = > 78 \\ \\ = = = = = = = = = = = = = = = = = = =$

$a15 = a + (n - 1)d \\ = > 6 + (15 - 1)3 \\ = > 6 + (14)3 \\ = > 6 + 42 \\ a15 = > 48 \\ \\ = = = = = = = = = = = = = = = = = = = =$

$a25 - a15 = 78 - 48 \\ = > 30$

hope it helps u .