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True [87]
3 years ago
8

Can someone solve this for me????? (10−523)⋅(−2)+x=823

Mathematics
1 answer:
AleksandrR [38]3 years ago
3 0

Answer:The answer is x = -203.

Step-by-step explanation:

1. reduce brackets

2. reduce 10 - 523 to -513

3. reduce -513 x -2 to 1026

4. subtract 1026 from both sides  

5. reduce 823 - 1026 to -203

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Suppose the number of radios in a household has a binomial distribution with parameters n=11 and p=40%. Find the probability of
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Answer:

Step-by-step explanation:

The formula for binomial distribution is expressed as

P(x=r) = nCr × q^(n-r) × p^r

From the information given,

n = 11

p = 40% = 40/100 = 0.4

q = 1 - 0.4 = 0.6

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a) P( x = 1) or P(x = 9)

P(x = 1) = 11C1 × 0.6^(11-1) × 0.4^1

P(x = 1) = 0.027

P(x = 9) = 11C9 × 0.6^(11-9) × 0.4^9

P(x = 9) = 0.0052

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b) P(x lesser than or equal to 7) = P(x = 0) + P(x = 1) + P(x = 2) + P(x = 3) + P(x = 4) + P(x = 5) + P(x = 6)

P(x = 0) = 11C0 × 0.6^(11-0) × 0.4^0 = 0.004

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P(x = 2) = 11C2 × 0.6^(11-2) × 0.4^2 = 0.089

P(x = 3) = 11C3 × 0.6^(11-3) × 0.4^3 = 0.177

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Answer:

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