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JulijaS [17]
3 years ago
8

Brett has a box of sport cards. The box has 12 soccer cards, 15 baseball cards, 5 boxing cards, and 10 basketball cards. What is

the probability of randomly selecting a baseball card from the box?
Mathematics
1 answer:
3241004551 [841]3 years ago
4 0
Total possible outcomes=42. No.of favourable outcomes=15. Then the probability of getting a base ball card is15/42
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Answer:

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Step-by-step explanation:

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Given a₇ = 2a₅ , then

a₁ + 6d = 2(a₁ + 4d) = 2a₁ + 8d ( subtract 2a₁ + 8d from both sides )

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The sum to n terms of an AP is

S_{n} = \frac{n}{2} [ 2a₁ + (n - 1)d ]

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2a₁ + 6d = 24 → (2)

Multiplying (1) by 3 and adding to (2) will eliminate d

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Add (2) and (3) term by term to eliminate d

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Answer:

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