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Mathematics 18 Online
OpenStudy (anonymous):

9^(x+1)=27, can someone assist me with this i forgot how to do it cause i moved from the section.

OpenStudy (anonymous):

ugh .. i wish i can help you on this but i forgot how too ....-.

OpenStudy (anonymous):

Its fine

OpenStudy (anonymous):

its -3/4

OpenStudy (precal):

|dw:1405629594765:dw|

OpenStudy (anonymous):

what im trying to do is solve for x, which is 1/2. i wanna know how i can get that number

OpenStudy (precal):

there is a rule in mathematics that states if you can create the same base, you can solve for x using the powers only

OpenStudy (precal):

9 and 27 can be rewritten using the same base, do you know which base I am referring to?

OpenStudy (anonymous):

logarithm?

OpenStudy (anonymous):

i wanna know how i can get to x+1=3/2

OpenStudy (precal):

yes you can log both sides but it is easier to set it to the same base

OpenStudy (precal):

logs are another approach

OpenStudy (anonymous):

so how do i solve this?

OpenStudy (precal):

well can you answer my question? can 9 and 27 have the same base? if so, what is it? example 2 and 8 have the same base because 2^3 is also 8

OpenStudy (anonymous):

i dont think they can although 9*3 is 27

OpenStudy (precal):

how about 3? can you rewrite those numbers in exponential form using base 3?

OpenStudy (anonymous):

no?

OpenStudy (precal):

3^2 is 3^3 is

OpenStudy (anonymous):

9 and 27 oh.. wow

OpenStudy (precal):

|dw:1405630199913:dw|

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