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3 years ago

Shaun is 4 years older than her sister Charmaine. If the sum of their ages is 16, how old is Charmaine?

Mathematics

1 answer:

skad [1K]3 years ago

4 0

Step-by-step explanation:

$let \: the \: age \: of \: charmaine \: be \: x$

$according \: to \: question$

$4 + x = 16$

$x = 16 - 4$

$12$

$so \: the \: age \: of \: shaun \: is \:$

$x + 4$

$12 + 4$

$16$

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Answer:

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Step-by-step explanation:

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3 years ago

he time between arrivals of small aircraft at a county airport is exponentially distributed with a mean of one hour. Round the a

Eva8 [605]

Answer:

The answer is below

Step-by-step explanation:

The time between arrivals of small aircraft at a county airport is exponentially distributed with a mean of one hour. Round the answers to 3 decimal places.

(a) What is the probability that more than three aircraft arrive within an hour?

(b) If 30 separate one-hour intervals are chosen, what Is the probability that no interval contains more than three arrivals?

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Solution:

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λ = 1 hour

Therefore:

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$P(X=1)=\frac{e^{-1}*1^1}{1!}=0.3679$

$P(X=2)=\frac{e^{-1}*1^2}{2!}=0.1839$

$P(X=3)=\frac{e^{-1}*1^3}{3!}=0.0613$

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$F(x)=1-e^{-\lambda x}$

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3 years ago

Which of the following expressions is equivalent to 5 + 2(10 – 3)?

Mekhanik [1.2K]

Answer:

Step-by-step explanation:

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3 years ago

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Tems11 [23]

Step-by-step explanation:

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1 year ago

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Softa [21]

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3 years ago

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