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Mandarinka [93]
3 years ago
11

Volume of 7/2, 7/5, and 5

Mathematics
1 answer:
FinnZ [79.3K]3 years ago
8 0

Answer:

7/2.7/5.5 = 140

297

≅ 0.4713805

Step-by-step explanation:

Divide: 7 / 2.7 = 7

1

· 10

27

= 7 · 10

1 · 27

= 70

27

To divide one fraction by another, invert (turn upside-down) the second fraction, then multiply.

Conversion a decimal number to a fraction: 5.5 = 55

10

= 11

2

Divide: 70

27

: 5.5 = 70

27

· 2

11

= 70 · 2

27 · 11

= 140

297

To divide one fraction by another, invert (turn upside-down) the second fraction, then multiply.

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A group of three undergraduate and five graduate students are available to fill certain student government posts. If four studen
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Answer:

Pr = 0.4286

Step-by-step explanation:

Given

Let

U \to\\ Undergraduates

G \to Graduates

So, we have:

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Required

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From the question, we understand that 2 undergraduates are to be selected; This means that 2 graduates are to be selected.

First, we calculate the total possible selection (using combination)

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So, we have:

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Total = \frac{8!}{(8-4)!4!}

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Using a calculator, we have:

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U = ^3C_2

U = \frac{3!}{(3-2)!2!}

U = \frac{3!}{1!2!}

U = 3

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G = ^5C_2

G = \frac{5!}{(5-2)!2!}

G = \frac{5!}{3!2!}

G =10

So, the probability is:

Pr = \frac{G * U}{Total}

Pr = \frac{10*3}{70}

Pr = \frac{30}{70}

Pr = 0.4286

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Step-by-step explanation:

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