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Rzqust [24]
3 years ago
6

Benny takes 11 hours to paint a room. it takes melanie 12 hours to complete the same job. how long would it take if they worked

together
Mathematics
1 answer:
Paul [167]3 years ago
3 0
It is aboute three houres

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(-a+3)(a+4)

Clear brackets

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By first principles, the derivative is

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A power of h in every term of the numerator cancels with h in the denominator:

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