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2 years ago

If lines and and cd are parallel,which if the following statements are true?

Mathematics

1 answer:

faltersainse [42]2 years ago

7 0

Answer:

Step-by-step explanation:

AB ll CD

what grade r u in btw ?

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The market and Stock J have the following probability distributions:

denis-greek [22]

Answer:

1) $E(M) = 14*0.3 + 10*0.4 + 19*0.3 = 13.9 \%$

2) $E(J)= 22*0.3 + 4*0.4 + 12*0.3 = 11.8 \%$

3) $E(M^2) = 14^2*0.3 + 10^2*0.4 + 19^2*0.3 = 207.1$

And the variance would be given by:

$Var (M)= E(M^2) -[E(M)]^2 = 207.1 -(13.9^2)= 13.89$

And the deviation would be:

$Sd(M) = \sqrt{13.89}= 3.73$

4) $E(J^2) = 22^2*0.3 + 4^2*0.4 + 12^2*0.3 =194.8$

And the variance would be given by:

$Var (J)= E(J^2) -[E(J)]^2 = 194.8 -(11.8^2)= 55.56$

And the deviation would be:

$Sd(M) = \sqrt{55.56}= 7.45$

Step-by-step explanation:

For this case we have the following distributions given:

Probability M J

0.3 14% 22%

0.4 10% 4%

0.3 19% 12%

Part 1

The expected value is given by this formula:

$E(X)=\sum_{i=1}^n X_i P(X_i)$

And replacing we got:

$E(M) = 14*0.3 + 10*0.4 + 19*0.3 = 13.9 \%$

Part 2

$E(J)= 22*0.3 + 4*0.4 + 12*0.3 = 11.8 \%$

Part 3

We can calculate the second moment first with the following formula:

$E(M^2) = 14^2*0.3 + 10^2*0.4 + 19^2*0.3 = 207.1$

And the variance would be given by:

$Var (M)= E(M^2) -[E(M)]^2 = 207.1 -(13.9^2)= 13.89$

And the deviation would be:

$Sd(M) = \sqrt{13.89}= 3.73$

Part 4

We can calculate the second moment first with the following formula:

$E(J^2) = 22^2*0.3 + 4^2*0.4 + 12^2*0.3 =194.8$

And the variance would be given by:

$Var (J)= E(J^2) -[E(J)]^2 = 194.8 -(11.8^2)= 55.56$

And the deviation would be:

$Sd(M) = \sqrt{55.56}= 7.45$

8 0

3 years ago

Whats 2x 500 plssssssssss

Lyrx [107]

Answer:

1000

Step-by-step explanation:

7 0

3 years ago

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Which value is equivalent to 5 + 4 x 2?<br><br> A) 11<br><br> B) 13<br><br> C) 18<br><br> D) 22

Gnom [1K]

4 * 2 = 8
8 + 5 = 13
B, is the correct answer

3 0

3 years ago

Read 2 more answers

Refer to the article "Fire Up the Sun."

Dmitry [639]

Based on the information given, it should be noted the central idea is C. Making and using a solar oven is a learning experience.

<h3>What is a central idea?</h3>

A central idea simply means the main idea that's in a literary work. It's the unifying element that's in a story.

The central idea is that making and using a solar oven is a learning experience and the detail that supports the central idea is that "by completing this project, you will make an inexpensive, ecologically friendly piece of equipment and learn about the science behind what you’re doing".

Learn more about central ideas on:

brainly.com/question/2684713

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2 years ago

Each of the 20 employees in an office took a 60 point test on office safety. The test scores are listed in the table below. Whic

madam [21]

Answer:

There is no table

Step-by-step explanation:

But to construct a histogram, we use frequence on the y-axis and class boundaries on the x-axis

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2 years ago