Question

if an=2n+3 then value of 3is​

Answer 1

Answer:

If Tn = 2n + 3 then,

↝ T1 = (2 × 1) + 3 = 2 + 3 = 5

↝ T2 = (2 × 2) + 3 = 4 + 3 = 7

↝ T3 = (2 × 3) + 3 = 6 + 3 = 9

∴ S3 is the sum of T1, T2, and T3 that is :

S3 = T1 + T2 + T3 =

5 + 7 + 9 = 21

Hence, S3 = 21

Step-by-step explanation:

@Genius

Answer 2

Answer:

In order to solve the given linear equation for the one unknown, n, we must isolate n on one side of the equation as follows:

2n + 3 = 27 (Given)

2n + 3 - 3 = 27 - 3

2n + 0 = 24

2n = 24

2n/2 = 24/2

(2/2)n = 24/2

(1)n = 12

n = 12

CHECK:

2n + 3 = 27

2(12) + 3 = 27

24 + 3 = 27

27 = 27

Therefore, n = 12 is indeed the correct value for the variable n, and, therefore, the solution to the given equation

Step-by-step explanation:

hope this helps u