jeniffer23
jeniffer23
27-04-2017
Mathematics
contestada
If (5^n)^3= 5^12 then n =?
Respuesta :
apologiabiology
apologiabiology
27-04-2017
easy
remember
if x^a=x^b whre x=x, then assume a=b
also
(x^m)^n=x^(mn)
so
(5^n)^3=5^(3n)
now we gots
5^(3n)=5^12
5=5 so assume 3n=12
3n=12
divide by 3 both sides
n=4
a cheat way would be to just evaluate it since you got the options
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