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Phoenix [80]
3 years ago
7

Which one is a proportion 3/4=12/15, 8/10=6/8,6/9=8/12, or 4/6=9/12

Mathematics
1 answer:
erik [133]3 years ago
7 0

Answer:

6/9 and 8/12 is the answer

Step-by-step explanation:

simplify both ratios

6/9 divide by 3 to =2/3

8/12 divide by 4 to =2/3

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Answer:

25 miles per hour

Step-by-step explanation:

Given

W = Wind\ resistance

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V = Velocity

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Where:

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Required

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W\ \alpha\ A*V

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k = \frac{220}{20 *55 }

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Substitute: A = 55; W = 275 and k = 0.2

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Make V the subject

V= \frac{275}{55 * 0.2}

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