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galben [10]
3 years ago
13

What is the rate of change between (2,2) and (17,7)

Mathematics
1 answer:
choli [55]3 years ago
5 0

Answer:

1/3

Step-by-step explanation:

(7-2)/(17-2)=5/15=1/3

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How much of an alloy with 30% copper must be added to 25 pounds of a second alloy that is 20% copper to create a 27% alloy? 33.8
yuradex [85]

Answer:

58.33 lbs.

Step-by-step explanation:

There are already 25 lbs of alloy of copper

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Now available is

Copper      Other metals

5 lbs                20 lbs

Let x lb of 30% copper is added.

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Percentage pure = \frac{5+0.3x}{25+x} =27%

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2 years ago
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