Question

If 3^17+3^17+3^17+3^17+3^17+3^17+3^17+3^17+3^17+3^17=81^N, then th value of N is:

a)6 b)17/4 c)17/2 d)19/4 e)16/9

Answer 1

i think it is b

Answer 2

can you please show some steps?

Answer 3

If there are 9 copies of 3^17 being added then...

3^17+3^17+3^17+3^17+3^17+3^17+3^17+3^17+3^17=81^N

9*3^17=81^N

(3^2)*(3^17)=(3^4)^N

3^(2 + 17) = 3^(4N)

I'll let you finish

Answer 4

There are 10 of 3^17

Answer 5

Then none of the answer choices match

Answer 6

If there are 9 of them added, then one of the answer choices matches.

Answer 7

ok

Answer 8

if there are 9 of them the answer will be d since 4N=19, N=19/4

Answer 9

yes

Answer 10

yeah I got it then, thank you so much for explaining this to me!! :)

Answer 11

np