Question

find k if 3k-2,4k+8,3k+12 is in ap.​

Answer 1

Answer:

the answer is 69420

Step-by-step explanation: yay!

Answer 2

Answer:

k=3

Step-by-step explanation:

we know in ap, an=a1+(n-1) d

where, a1=1st term in the sequence

an=nth term in the sequence

d=the common difference between terms

a1=3k-2,a2=4k+8,a3=3k+12

d=4k+8-3k+2

=k+10

then by the rule if n=3,

a3=3k-2+(3-1)(k+10)

3k+12=3k-2+2k+20

or, 3k-5k=18-12

Or, -2k=6

Or, k=-3