3 years ago

What is the value for ƒ(x) = 3x^2+1 when x= 1/2 3 6 9 15

Mathematics

1 answer:

lisabon 2012 [21]3 years ago

5 0

None of your answers above will answer the question. The proper value for x = 1/2 is 7/4. The work for this is below.

f(x) = 3x^2 + 1

f(1/2) = 3(1/2)^2 + 1

f(1/2) = 3(1/4) + 1

f(1/2) = 3/4 + 1

f(1/2) = 7/4

I assume you may have missed something in typing, but 7/4 would be your answer.

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Step-by-step explanation:

The probability distribution of lateness is as follows:

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The formula of expected value of a random variable is:

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$E(X)=\sum x\cdot P(X=x)$

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Thus, the expected value of lateness $\frac{7}{20}$ hours.

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