abdullahakhtar2 abdullahakhtar2

05-06-2017
Mathematics

contestada

5 ^6 − 5 ^11 = 5 x ( 1 − 5 y ) what is the value of x and y

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budwilkins budwilkins

07-06-2017

Is it 5^6 - 5^11 = 5x × (1-5y)?
5^6 - 5^11 = 5^(6-11) = 5^(-5) = 1/(5^5)
So 1/3125 = 5x - 5(5y)
1/3125 = 5(x-5y)
1/3125/5 = x-5y
0.000064 = x - 5y

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