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If 5^2x+5/(5^3)(7y) = 28y^2, then 5(5^y - 1) =? 6 9 10 14 25

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If 5^2x+5/(5^3)(7y) = 28y^2, then 5(5^y - 1) =? 6 9 10 14 25 [#permalink] New post 08 Nov 2005, 20:51
If 5^2x+5/(5^3)(7y) = 28y^2, then 5(5^y - 1) =?

6
9
10
14
25


If my diction is not clear the numerator is 5 and it is raised to the entire 2x+5.

Also, in the 'then' part, the 5 in the bracket is raised to y only.
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Re: Exponents [#permalink] New post 08 Nov 2005, 22:48
too tired...will do it tommorow morning..

desiguy wrote:
If 5^2x+5/(5^3)(7y) = 28y^2, then 5(5^y - 1) =?

6
9
10
14
25


If my diction is not clear the numerator is 5 and it is raised to the entire 2x+5.

Also, in the 'then' part, the 5 in the bracket is raised to y only.
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Re: Exponents [#permalink] New post 08 Nov 2005, 22:50
fresinha12 wrote:
too tired...will do it tommorow morning..


I geuss it is already tomorrow morning for you :!: :wink:
Re: Exponents   [#permalink] 08 Nov 2005, 22:50
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If 5^2x+5/(5^3)(7y) = 28y^2, then 5(5^y - 1) =? 6 9 10 14 25

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