3 years ago

Which expression represents the perimeter of the rectangle above?

Mathematics

1 answer:

Arisa [49]3 years ago

7 0

Answer:

12x-8

Step-by-step explanation:

Added both equations and used PEMDAS to combine all equations

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The following gambling game has been proposed, which a player must pay to play. First, a value U is chosen uniformly from the se

Vesna [10]

Answer:

The player should be required to pay $5 to make this a fair game.

Step-by-step explanation:

U ~ Uniform(0, 10)

E[U] = (0 + 10)/2

= 5

X | U ~ Poisson(U)

E[X | U] = U

By law of total probability for expectations,

E[X] = E[E[X|U]] = E[U] = $5

Therefore the player should be required to pay $5 to make this a fair game.

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3 years ago

The AAA system contains 3 independent components in parallel, each with probability of failure 0.4. Find the expected number of

Gre4nikov [31]

Answer:

Step-by-step explanation:

For each component, there are only two possible outcomes. Either it fails, or it does not. The components are independent. We want to know how many outcomes until r failures. The expected value is given by

$E = \frac{r}{p}$

In which r is the number of failures we want and p is the probability of a failure.

In this problem, we have that:

r = 1 because we want the first failed unit.

$p = 0.4[\tex]So[tex]E = \frac{r}{p} = \frac{1}{0.4} = 2.5$

The expected number of systems inspected until the first failed unit is 2.5

8 0

3 years ago

Han buys an item with a normal price of $15.

KiRa [710]

Answer:

$1.50

Step-by-step explanation:

15*.10=1.50

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3 years ago

If r = 25 cm and s = 7 cm, what is the length of t?

Alina [70]

The length would be 15

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3 years ago

Find the slope of a line through (4, 5) and (4, -5). Determine if the line is vertical, horizontal, or neither.

oksian1 [2.3K]

Answer:

Its a straight line

Step-by-step explanation:

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3 years ago