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What number are both 8 and 4 a power of?

log(base8)4^2-log(base8)8^(1/3)=log(base8)[4^2/8^(1/3)]

Are you good now smurfy?

simplify!

=log(base8)[16/2] i will let you do the last step

or last two steps

so x=1 correct?

:) YES!

whoo thanks so much!

think you could help me with one more?

ok

i got 17/26 :(

let me think about it

ok and ya all the answers tht i was getting werent on there either :P

i suck at probability, but give me a few and I will think

I get A

could u plz explain it to me?

did you P(AUB)=P(A)+P(B)-P(A and B)

No, I used the probability of two independent events is their product.

So how many ways can Jamal draw a letter that is in his name?

jaml

its independent events because A has nothing to do with B good thinking bond

right, so 4/26

someone explain how rhey got A!

dont worry about A

Now, how about the probability of pulling an odd tile?

1/10

how many odd numbers are between 0 and 9?

ohhhh ODD 5/10!

ok so since they are independent events you multiply the (5/10)(4/26)

ok see ididnt get it bc ithought it said 1/10 not 5/10 imissedthe odd part lol thanks!!

lol

one more q! 3^2x=7^(x-1)

Eeek, that doesn't look good...

hahaha

q! is read as q factorial?

jk lol i know you mean another question!

take the natural log of both sides

ln3^(2x)=ln7^(x-1)

2xln3=(x-1)ln7

2xln3=xln7-ln7

2xln3-xln7=-ln7

x(2ln3-ln7)=-ln7

x=-ln7/(2ln3-ln7)

x=-ln7/(ln8-ln7)

x=-ln7/(ln(8/7))

ok i see so b4 i write the work does the answer comeout positive?

you have a negative in front of it so its negative

ok so were allowed to have a negative as the answer?

ln(negative)=does not exist ln(0) does not exist -lna exist if a>0

so the answer is?

the answer to?

are we still talking about the previous solution?

ya the one with the negative

so you are saying its not a solution? why do you say that?

what? i just want to know what you got for the answer lol

we can check it to see

youre confusing me

you want to know if it is a solution. if you ever have doubt about something, check it

give me just sec and i will check k??

it is a solution if i did each step correctly

so the final answer is....?

you know like x=?

i can scroll back up and look just sec

it says x=-ln(7)/(ln(8/7))

so if you put that in your calc what is the number? (sorry i dont have a good calc with me)

> evalf(solve(3^(2*x) = 7^(x-1)));
-7.742930467
>

ok thanks!