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2 years ago

7/9 - 5/6 - (-1/3) =

Mathematics

1 answer:

Tomtit [17]2 years ago

4 0

Answer: 0.278. I did the math. Can I has brainliest..?

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5 76/10 x 1.75 i need help

alekssr [168]

Answer:

22.05

Step-by-step explanation:

7 0

2 years ago

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A particular sale involves four items randomly selected from a large lot that is known to contain 9% defectives. Let X denote th

umka2103 [35]

Answer:

The expected repair cost is $3.73.

Step-by-step explanation:

The random variable X is defined as the number of defectives among the 4 items sold.

The probability of a large lot of items containing defectives is, p = 0.09.

An item is defective irrespective of the others.

The random variable X follows a Binomial distribution with parameters n = 9 and p = 0.09.

The repair cost of the item is given by:

$C=3X^{2}+X+2$

Compute the expected cost of repair as follows:

$E(C)=E(3X^{2}+X+2)$

$=3E(X^{2})+E(X)+2$

Compute the expected value of X as follows:

$E(X)=np$

$=4\times 0.09\\=0.36$

The expected value of X is 0.36.

Compute the variance of X as follows:

$V(X)=np(1-p)$

$=4\times 0.09\times 0.91\\=0.3276\\$

The variance of X is 0.3276.

The variance can also be computed using the formula:

$V(X)=E(Y^{2})-(E(Y))^{2}$

Then the formula of $E(Y^{2})$ is:

$E(Y^{2})=V(X)+(E(Y))^{2}$

Compute the value of $E(Y^{2})$ as follows:

$E(Y^{2})=V(X)+(E(Y))^{2}$

$=0.3276+(0.36)^{2}\\=0.4572$

The expected repair cost is:

$E(C)=3E(X^{2})+E(X)+2$

$=(3\times 0.4572)+0.36+2\\=3.7316\\\approx 3.73$

Thus, the expected repair cost is $3.73.

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2 years ago

Explain the difference between common and preferred stock? List the advantages and disadvantages of each.

Arturiano [62]

Common Stock :

→Common stock is the most common type of stock that is issued by companies.

→ Have voting privileges, whereas holders of preferred stock may not.

→ Most common stock gives owner one vote per number of shares owned.

Preferred Stock :

→ Preferred stock is generally considered less volatile than common stock.

→ Preferred stockholders generally do not have voting rights.

Both common stock and preferred stock have their advantages.

When considering which type may be suitable for you, it is important to assess your financial situation, time frame, and investment goals.

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2 years ago

I need help on this question?

Lera25 [3.4K]

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1 year ago

Use the interactive number line to help complete each exercise. Place points at -1 and -4. Complete the inequality: -1 -4. Place

Sliva [168]

Question might not be complete

Answer and explanation:

The signs -1 and -4 lie on the negative side of the number line, left of zero(positive right of zero).

The opposites for each number would be +1 and +4 which would all be on the right side of zero on the number line

Inequality signs or statements to represent greater and lesser number on the number line using the numbers above as examples would be:

-1<+1

-4<-1

+1>-1

+1<4

-1-4<1+4

Numbers that don't have signs attached to them are automatically positive numbers

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2 years ago

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