If 18√18 = r√t, where r and t are positive integers and r > t, which of the following could be the value of rt

a) 18
b) 36
c) 108
d) 162
e) 324

if some one could answer this and elaborate on it, I would be ever so grateful

PS √ = square root
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Last edited by illuzion_ownz at Sep 26, 2007,
18/18 =
18/9x2 =
18x3/2 =
54/2

54x2 is 108

ignore the guy that said 324, that's just 18^2.

i couldn't find a decent sq root sign
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Quote by illuzion_ownz
they're trying to trick you

no its supposed to be c....
Rig:

Gibson ES-335
Peavy Classic 30
i know, i lied, i was trying to trick you, not them *shakes head*
um...im a2 level maths, and i can simplfy the sum to 54root2 or -52root2, but that doesnt make a rational number.
Quote by mr freezy
I don't know it and I'm doing GCSE. I'm so screwed.

GCSE maths is a hell lot different from American maths, so don't worry.

GCSE Maths is easy if you get your lazy ass into it.
Quote by Def
um...im a2 level maths, and i can simplfy the sum to 54root2 or -52root2, but that doesnt make a rational number.

question doesn't ask for a rational number, you did it right!
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Quote by flambe chicken
18/18 =
18/9x2 =
18x3/2 =
54/2

54x2 is 108

ignore the guy that said 324, that's just 18^2.

i couldn't find a decent sq root sign

thank you!
Rig:

Gibson ES-335
Peavy Classic 30

18 root 18

18 root(9x2)

(3x18) root 2

so, r= 54 and t=2

so rt=108
Quote by SmarterChild

18 root 18

18 root(9x2)

(3x18) root 2

so, r= 54 and t=2

so rt=108

+1 (no pun intended)

the SAT was easy........ its all algebra and geometry

EDIT: lol at the username, its so true in this case. you truly are the smarter child
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