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vagabundo [1.1K]
3 years ago
5

A lottery game has balls numbered 1 through 15. What is the probability of selecting an even numbered ball or a 13?

Mathematics
1 answer:
LiRa [457]3 years ago
4 0

Answer:

8 / 15

Step-by-step explanation:

Sample space = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15}

Required outcome :

Even numbers = (2, 4, 6, 8, 10, 12, 14) or 13

Total required outcomes = 8

Probability = required outcome / Total possible outcomes

P(even number or 13) = 8 / 15

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Answer:

(y - 2)²

Step-by-step explanation:

9y² - 12y + 4 ← is a perfect square of the form

(ax - b)² = a²x² - 2abx + b²

Compare like terms with 9y² - 12y + 4, thus

a² = 9 ⇒ a = 3

b² = 4 ⇒ b = 2 and

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Thus

9y² - 12y + 4 = (3y - 2)²

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Answer:

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x<−9

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Hoped this helped :)

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