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Inga [223]
3 years ago
7

EVALUATE F(X)=1/3X FOR X=4

Mathematics
1 answer:
ollegr [7]3 years ago
5 0
Simply plug in x = 4 in to the function

f(4) = 1/3 * 4

f(4) = 4/3
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A pharmacist has an 18% alcohol solution and a 40% alcohol solution. How much of each should he mix together to make 10 liters o
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Lets call x the amount of 18% solution and y the amount of 40% solution, and write as equations the info of the problem:
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lets multiply the second equation by -18 and add to the first:
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-18x -<span> 18y = -180
</span>----------------------
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and substitute in the original equation:
x <span>+ y = 10
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x = 110/11 - 10/11
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3 years ago
Three equivalent ratio of 48:36
Andre45 [30]
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