Question

Help?

Answer 1

I don't understand the second one at all, could someone write it out for me and explain it?

Answer 2

@Official_Hotboy any clue?

Answer 3

its squaring but not anything ive seen before i cant help sorry :/

Answer 4

@campbell_st ?!

Answer 5

factor tree might help

Answer 6

to find least common factors

Answer 7

do you know how to use logarithms...?

Answer 8

I know that you're supposed to use them, but I'm really confused on how.

Answer 9

@campbell_st

Answer 10

Could you possibly at all, do it for me then explain??

Answer 11

ok... so take the logs of both sides

\[\log(81^y) = \log(18)\]

using some log laws it can be written as

\[y log(81) = \log(18)\]

which becomes

\[y = \frac{\log(18)}{\log(81)}\]

Answer 12

so y = log^3/4?

Answer 13

if you think thats the answer... use your calculator to check...

\[81^{\log{\frac{3}{4}}}\]

I'd leave my answer as the one above...

Answer 14

so just leave it y = log(18)/log(81)?

Answer 15

that would be by guess.... it can be simplified by applying some log laws.... but if you're not confident... leave it