Question

If 8^y=2 and 3^x+y=81 then x= ?

Answer 1

I got 11/3 ?

Answer 2

Right or wrong @kropot72

Answer 3

2^(3y) = 2^(1)

3y = 1

y = 1/3..

Answer 4

I have already solved it and i got 11/3,right or wrong ?

Answer 5

I get 3.996

Answer 6

@kropot72 LoL :D

Answer 7

You could have got 3.66667

Answer 8

@waterineyes Yes ?

Answer 9

So 11/3 is not the right answer ?

Answer 10

3^{x+1} = 242

(x+1) log(3) = log(242)

x + 1 = 4.9964

Solve this to get x..

Answer 11

\[3^{x}=80\frac{2}{3}\]
\[x \ln 3=\ln 80\frac{2}{3}\]
\[x=\frac{\ln 80.66666}{\ln 3}=3.996\]

Answer 12

It's 3.9964..

Answer 13

Go with @kropot72

Answer 14

If you are confident about x = 11/3 then tell us how did you get that @hba

Answer 15

3^x+y=81
3^x+y=3^4
x+y=4
x=4-y
x=4-1/3
x=12-1/3
x=11/3

Answer 16

Man that x+y whole is in power???

Answer 17

yeah ?

Answer 18

Is it 3^{x+y} or 3^{x} + y..

Answer 19

\[3^{x+y}\]

Answer 20

Then you are right...

Answer 21

Thanks Alot.

Answer 22

@hba please use brackets to show properly...

Answer 23

@waterineyes Sorry for the confusion.

Answer 24

It is okay dear...

Answer 25

Next time please type 3^(x+y). Thanks in advance :)