Eight less than a number doubled is twenty more than the number. What is the number?

1 answer:

7 0

Let the number be a .... =>Number doubled : 2a .. =>Eight less than the no. Doubled : 2a - 8 =>Eight less than the no. doubled is 20 more than the no. : 2a - 8 = 20 + a =>2a - 8 - 20 - a = 0 =>2a -a - 20 -8 = 0 =>a -28 = 0 =>a = 28 =>so the number is 28... Hope it helps!!!

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A farmer finds that he can buy 5 sheep and 5 cows for $129or 10 sheep and 17 cows for $177 .how much will it cost him to buy 3 s

bezimeni [28]

Let the cost of one sheep and one cow be x and y respectively.
Therefore,

5x+5y=129
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Solving the two equations,
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Now,
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Step-by-step explanation:

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vitfil [10]

Answer:

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Step-by-step explanation:

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