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Amerchant has coffee worth $60 a pound that she wishes to mix with 50 pounds of coffee worth $90 a pound to get a mixture that she will sell for $70 a pound. how many pounds of the & 60 coffee should be used?
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Which graph corresponds to the function f(x) = x2 + 4x – 1?
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If the ratio of sum of the first m and n terms of an ap is m2 : n2 , show that the ratio of its mth and nth terms is (2m − 1) : (2n − 1).
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Mathematics, 21.06.2019 19:30
If chord ab is congruent to chord cd, then what must be true about ef and eg?
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Find the distance an airplane travels in 3 hrs at 478 mph...
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