help please please

Hi guys,

Any idea????

If A is directly proportional to the cube of B (A = KB�) and when A = 4, B = 81. What is the value of K?


Regards,

Neo!:bash:

So far i have the following:

(a) (bk)
----- = ------
(4) (81)

( 4 ) ( bk )= ( 81 ) ( a )


Simplify Multiplication on the left side:
+ 4bk = +(+ 81 ) +(+ a )


Simplify Multiplication on the right side:
+ 4bk = + 81a

Divide each side by +4.
+4bk=+81a
---- ----
+4 +4

+ bk = + 20.25a

Please if anybody knows can you help?

Regards,
Neo!


More coffee!!!!!

DID IT!!!!! 2 hours for one number,

9 LMAO

Regards,
Neo.