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Tamiku [17]
4 years ago
15

There are 10 students in a class: 6 boys and 4 girls.

Mathematics
2 answers:
Evgesh-ka [11]4 years ago
6 0

Answer:

1/6

Step-by-step explanation:

Think of drawing 1 student at a time without replacement.

First drawing:

p(boy) = 6/10

Second drawing:

p(boy) = 5/9

Third drawing:

p(boy) = 4/8

p(3 boys) = 6/10 * 5/9 * 4/8 = 3/5 * 5/9 * 1/2 = 3/18 = 1/6

Answer: 1/6

horsena [70]4 years ago
4 0

Answer:

1/ 6

Step-by-step explanation:

Therefore, the required probability is 1/6.

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3 years ago
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(-3/2)x - 9 = - 27 solve for x
aleksklad [387]

Answer:

x = 12

Step-by-step explanation:

Solve for x:

(-3 x)/2 - 9 = -27

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(-18)/2 - (3 x)/2 = -27

(-18)/2 - (3 x)/2 = (-3 x - 18)/2:

(-3 x - 18)/2 = -27

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(2 (-3 x - 18))/2 = -27×2

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Add 18 to both sides:

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-3 x = -36

Divide both sides of -3 x = -36 by -3:

(-3 x)/(-3) = (-36)/(-3)

(-3)/(-3) = 1:

x = (-36)/(-3)

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Answer:

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-45

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