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arlik [135]
3 years ago
15

Which represents the series in sigma notation? -5+(-1)+3+7+11

Mathematics
1 answer:
earnstyle [38]3 years ago
4 0
The answer is c or the third option. If we start at one we get (4(1)-9)=-5, then we can do 2 and we get (4(2)-9)=-1. Lets do 3 (4(3)-9)=3. Now 4 (4(4)-9)=7. Now 5 and our last one (4(5)-9)=11. Now notice we get -5+-1+3+7+11.
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54% of U.S. adults have very little confidence in newspapers. You randomly select 10 U.S. adults. Find the probability
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Part B is not clear and the clear one is;

P(X ≥ 6)

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A) 0.238

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C) 0.114

Step-by-step explanation:

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P(X = x) = nCx × p^(x)•(1 - p) ^(n - x)

A) 54% of U.S. adults have very little confidence in newspapers. Thus;

p = 0.54

10 random adults are selected. Thus;

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B) P(X ≥ 6) = P(6) + P(7) + P(8) + P(9) + P(10)

From online binomial probability calculator, we have;

P(X ≥ 6) = 0.2331 + 0.1564 + 0.0688 + 0.01796 + 0.0021 = 0.47836 ≈ 0.478

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5 0
3 years ago
What is the answer to this 8a-12b+28
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Step-by-step explanation:

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