Question

HELP!! Simplify log8 7 – log8 s + log8 t – log8 4
HELP!! Simplify log8 7 – log8 s + log8 t – log8 4
@Mathematics

Answer 1

log base 8?

Answer 2

Yes :)

Answer 3

\[\log(\frac{7t}{4s})\]

Answer 4

are u sure?

Answer 5

ones with plus go in the numerator, ones with minus go in the denominator

Answer 6

oh ya

Answer 7

Ok so its like putting the first half into a fraction and the second part another fraction and multiply across?

Answer 8

yeah i am pretty sure... of course it is true that
\[\log_8(4)=\frac{2}{3}\] but i doubt this is part of the problem

Answer 9

you forgot to add the base 8 in ur first answer

Answer 10

\[\log(a)+\log(b)=\log(ab)\] and
\[log(a)-\log(b)=\log(\frac{a}{b})\]

Answer 11

base is not relevant to this problem

Answer 12

yes it is

Answer 13

So would this:
Solve log7 (x – 8) – log7 3 = log7 21

be x = 71

Answer 14

x is 71?

Answer 15

I don't think so

Answer 16

(x-8)/3=3

Answer 17

x-8=9

Answer 18

you need an x in your answer. it would be
\[\log(\frac{x-8}{3})\]

Answer 19

x=17

Answer 20

Oh so am I wrong?

Answer 21

\[\frac{x-8}{3}=21\]
\[x-8=63\]
\[x=71\]

Answer 22

But how did you get (x - 8) / 3 = 3
its suppose to equal 21?

Answer 23

I think I am wrong

Answer 24

yes it is equal to 21

Answer 25

71 is correct

Answer 26

I have another question, but I will put it on the side so i can give you guys another medal if you help me ^^

Answer 27

Ya i messed up

Answer 28

oh who cares abt the medals???

Answer 29

I just feel bad if I dont give you guys what you deserve for taking ur time to help me haha