Question

If 3 , 2K+3 and 9 are in A.P. , then find the value of K

Answer 1

♣️welcome to the concept of Arithmetic series ♣️

✨concept : if a,b,c are in Ap then there common difference is same .i.e.

b-a= c-b

✨ solution : 3,2k+3 ,and 9 are in Ap

then ,

(2k+3)-3= 9-(2k+3)

2k = -2k +6

4k = 6

then ,

k = 6/4

k= 3/2

✨I hope it help you

otherwise report it

Answer 2

Answer:

K = 3/2.

Step-by-step explanation:

Use the formula of average mean to find value of K.

That is, A+C / 2 = B

THEREFORE, 9+3 /2 = 6

SO, 2K + 3 = 6

THEREFORE, K = 3 / 2.

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