over the last ten years, what has caused the audience ratio of three major networks, CBS, NBC, and ABC from 90 percent to 60 percent of the total television audience?
A) cable channels
B) digital television
C) high-definition television
D) online streaming

Answers

Answer 1

The cause of the drop in the audience of the three major networks is D) online streaming.

How did the audience drop ?

With the proliferation of media platforms available to the general public, relying solely on conventional network television stations has become less common.

Cable channels present numerous options for content tailored to specific interests, and online streaming services offer subscribers the flexibility to watch their preferred shows and movies whenever they choose, without adhering to standard broadcast timetables. This shift in preferences has fragmented the audience base, spread out among multiple media offerings.

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Related Questions

O novo funcionário da equipe de desenvolvimento de sistemas está aprendendo os termos mais utilizados no dia a dia da empresa. Auxilie-o nesta tarefa:

O que são bugs?

Answers


Os insetos são insetos

which passage form the passage best contributes to elisa impatient tone

Answers

You need to attach a document of where i would read it from

Rain forests clean the air by producing oxygen. Some rain forest plants have healing properties, and can be used as medicine. Rain forests also are known to affect the water cycle and weather. The threat of deforestation , however, means that these important rain forests may disappear. Which statement best describes the main idea of the paragraph? Rain forests determine the weather. Medicine can be found in the rain forest. Rain forests are important for many reasons. Rain forests are disappearing.

Answers

Answer:

The answer is C. Rain Forests are important for many reasons

Explanation:

Answer:

c

Explanation:

i did it on edg2020

Which of the following is the most common use of mobile technology for small and medium businesses? Fleet management and service Delivery and pickup processes Managing sales and invoice data Social media and email marketing

Answers

Social media and email marketing

Alternating Current or AC is better for use in ___________, while DC direct current is needed in _________ .

A) generators, motors
B) motors, generators
C) electric power transmisson, electronics
D) electronics, electric power transmission

Answers

C electric power transmisson and electronics

Answer: Electric power transmission, Electronics.

Explanation:

First we need to define what is AC and DC.

AC is basically a current that reverses or changes direction, while a DC is one that follows a specific pattern i.e one directional.

From the question on which is better suited for AC and DC,

For AC, electric power transmission is considered because of its efficiency for transmitting power over long distances and cause of it ability to be produce high voltage by transformer which is more efficient.

Also DC is considered for Electronics because of reasons like:

- accuracy and ease at which we can control it

- most modern electronic devices uses batteries, and we know batteries can't store Ac, but rather it stores DC

If a user has just added a simple triangle shape into a diagram, how can the triangle be adjusted? Check all that apply. by making it bigger by adjusting it to be SmartArt by making it smaller by adjusting it to be a different style by making it thinner by making it thicker by adjusting it to be a different color by rotating it

Answers

The first two make the most sense.
I hope this helps!

Answer: The correct answer is everything except adjusting it to be SmartArt. You can originally add it as SmartArt if you are adding the triangle through that feature.

Explanation: There are a number of ways that a triangle can be adjusted after being inserted into a diagram. The different ways include:

-by making it bigger

-by making it smaller

-by adjusting it to be a different style

-by making it thicker

-by adjusting it to be a different color

-by rotating it

What is the difference between a technological problem and a technological opportunity? Explain with an example.

Answers

I will explain this concept using an example for Small Businesses.

The concept of Frustrated Users (Employees) is an example of a technological problem. Interacting with technology is a huge part of the employees’ day. Using slow, outdated systems with frequent problems makes it much more difficult for them to be happy and productive.

How would it impact a business if the company enabled the employees to get just 5 percent more accomplished every day? the answer is simply by keeping the technology up to date. So, the problem exposed above allows the company to find new ways and opportunities to make the job easier.

The company would need to establish a training plan for the employees. Maybe establishing a diploma course that allows them to learn and know better the new technologies.

Answer:

The need to increase car fuel efficiency is a technological problem that affects all American, European and Japanese car manufacturers. Regulation requires them to increase fuel efficiency but due to technological problems and specially high costs they are struggling to meet the required limits. Different technologies that increase fuel efficiency exist, but are simply too expensive and that is the problem here. How can these technologies become less expensive and widely used?

This led to a technological opportunity that Tesla is trying to accomplish by providing "affordable" electric cars. They are not cheap cars, but they are much cheaper and efficient than before. By developing innovations in electric cars and specially extending the battery ranges, Tesla hopes to become a major car manufacturer in the future.

Need answers for 11&12. Due today. Thanks.

Answers

What is CAD?

Computer-aided design (CAD) is the use of computer programs or computer systems that aim to create, modify, analyze, optimize and document two or three-dimensional (that is 2D or 3D) graphical representations of physical objects as an alternative to manual drafts and product prototypes. It is widely used in electrical, mechanical, chemical engineering, among others. For example, it is used in electrical engineering to make electrical drawings regarding different projects such as Residential Projects, industrial projects, etc.

What are some of its advantages over other design systems?

CAD is widely used to increase the productivity of the designer as well as improve the quality of design, improve communications through documentation, and to create a database for manufacturing. 
It is used throughout the engineering process. From conceptual product design and layout through assembly analysis to manufacturing method definition. The method  CAD enables and ensures engineers to interactively test design variants with minimal physical prototypes to achieve: 

1. Lower product development costs
2. Greater speed
3. Increased productivity
4. Quality assurance 
5. Accelerated time-to-market

In this technological age, costs, productivity, speed, quality and time are topics very important to companies. These topics are optimized using CAD. Manual drafts and product prototypes translate into a poor productivity nowadays.

What is the difference between servicing and repair?

There are a lot of products that are designed to be fully serviceable and repairable. These products (such as a watch, smartphone, car, etc) are subjected to a wide variety of daily stresses and strains. When a part of the product needs replacing, this is a timely opportunity to ensure that any progressive wear and tear from external elements are addressed. By carefully assessing each product, checking its parts, addressing any worn parts or gaskets, ensures that the product is in perfect working order and that it always functions efficiently. This is related to service.
On the other hand,  if the product has been accidentally damaged, suffered a fault, then it is necessary to repair the product. This is related to repair
So, the difference between servicing and repair is that the first one is related to maintenance and the second one involves fixing things when the product is damaged.

Why are both important in technological products?

Creating the most popular product of the year will make consumers and investors happy. Many of the best-selling products were first in a new category. The purpose of the products is to continue to dominate their markets. So, it is important that they be easy for maintenance and hard to be damaged.

One of the Employee responsibilities to LOTO is:
A. To make certain the equipment may be safely used after a LOTO has been completed.
B. To confirm that all affected employees have been trained
C. To shut down any hazardous energy
D. To read and understand the assembly diagram of the equipment he or she works on.

Answers

D. To read and understand the assembly diagram of the equipment he or she works on

Need 9&10. Thank you! Btw it's due today.

Answers

Q9. The metric system is an internationally adopted decimal system of measurement. It is widely used in the world and is the only or most common system of weights and measures. It is now known as the International System of Units (SI). It is used to measure everyday things such as a sack of flour, the height of a person, a tank of petrol, and the speed of a car. On the other hand, the United States customary units are a system of measurements commonly used in the United States. So, for the measurement above we have:

Distance from Los Angeles:

Given that the problem does not tell us the specific point for the distance from Los Angeles. We will assume that this point is New York, so:

*Metric: The unit for length is the meter.

d = 4488460 (m)

*U.S customary: For measuring length, the U.S. customary system uses the inch, foot, yard, and mile, so:

d = 176711023 (in)
d = 14725918 (ft)
d = 4908639 (yd)
d = 2789 (mi)

The temperature on a hot day:

*Metric: Degree Celsius is a unit of thermodynamic temperature. So, on a hot day the temperature is:

T = 35°

*U.S customary: Degrees Fahrenheit is used in the U.S. to measure temperatures, so:

T = 95°

The weight of a loaf of bread: 

*Metric: The unit used for mass is the kilogram. For a mass of 0.095 (kg), the weight that is a force (Newton is the unit for measuring weight) is given by:

w = 0.931 (N)

*U.S customary: Ounces is a unit of weight for this system, so:

w = 1 ounce

Length of a pencil: 

*Metric:
d = 0.095(m)

*U.S customary: 

d = 3.74 (in)
d = 0.311(ft)
d = 0.10 (yd)
d = 5.90 (mi)

The capacity of a container:

The capacity of an element is equal to the volume that is the quantity of three-dimensional space enclosed by a closed surface, so the capacity of a container very used these days  is:

*Metric: 

[tex]V = 33.2m^{3}[/tex]

*U.S customary: The cubic inch, cubic foot and cubic yard are commonly used for measuring volume. So:

[tex]V=2025988in^{3}[/tex]
[tex]V =1172.44ft^{3}[/tex]
[tex]V =43.42yd^{3}[/tex]

Q10. We can explain this concept using an example for Small Businesses. The concept of Frustrated Users (Employees) is an example of a technological problem. Interacting with technology is a huge part of the employees’ day. Using slow, outdated systems with frequent problems makes it much more difficult for them to be happy and productive. How would it impact a business if the company enabled the employees to get just 5 percent more accomplished every day? the answer is simply by keeping the technology up to date. So, the problem exposed above allows the company to find new ways and opportunities to make the job easier. The company would need to establish a training plan for the employees. Maybe establishing a diploma course that allows them to learn and know better the new technologies.

Effective presentations are: Colorful and exciting Created for a specific audience Have many messages Have a central message Are influence by a setting

Answers

I would say they have a central message
maybe a central message?

Brian wants to conduct an online search using a certain phrase he intends to use the word books that belong to the 1800's in his search how should he use the word that in his search?

Answers

Answer:

Use quotation marks (" ")

Explanation:

It depends on the search engine. For Google, you need to put the phrase inside of quotation (" ") marks. It also works for DogPile and Bing. I can't confirm whether it works with any other search engines, but I can confirm that it works with these three engines.

Final answer:

Brian should include the word 'that' as part of his search query to find 'books that belong to the 1800s' and consider using additional keywords such as '19th century', '1800s', and 'historical'. Utilizing the Library of Congress Subject Headings or similar online database algorithms is crucial to executing a precise and effective search.

Explanation:

If Brian wants to conduct an online search using the phrase 'books that belong to the 1800’s', he should use the word 'that' as part of his search query to ensure specificity. Libraries and online databases organize and retrieve information using algorithms that target keywords. Therefore, if Brian is conducting his search in a library catalog or an online database, he may have to consider various keywords or subject searches based on the Library of Congress Subject Headings (LCSH) or specific database algorithms.

When searching for books from a particular era, using terms like '19th century', '1800s', 'historical', along with the subject matter of the books, could help narrow down the search. Including the word 'that' in the phrase maintains the intended historical context of the books Brian is looking for. Furthermore, if Brian is using an academic library, he should consult the library’s online catalog which most likely uses LCSH for subject searches, while online searches may use different terms and organization methods.

It's important for Brian to practice generating key terms and take notes on the variety of terms that describe his research area, which can serve as both keyword and subject searches throughout his research process. By doing so, he is more likely to efficiently find books from the 1800’s that relate to his topic of interest.

if the Mona Lisa was in a word document, what would be the orientation

Answers

Portrait orientation

how does coding robots fit into STEAM

Answers

Coding robots fits into the technology part of STEM.

Coding robots integrates with STEAM by combining technical expertise in robotics and programming with artistic creativity, such as through interactive storytelling and designing 3D artifacts. Programs like Tech Tales facilitate this integration, highlighting the importance of cultural context in robotic engineering and STEAM education.

Coding robots plays a significant role in the STEAM (Science, Technology, Engineering, Arts, and Mathematics) educational approach. This interdisciplinary teaching method emphasizes the value of integrating the arts into the technical and scientific fields, acknowledging that creative thinking enhances learning and innovation. Coding robots can be linked to STEAM through various activities like creating an interactive digital story, constructing 3D digital artifacts, designing a multimodal book, or constructing an augmented reality exhibit. These activities combine artistic creativity with technical skills, promoting a well-rounded educational experience.

The Tech Tales program is an excellent example of how coding robots fit into STEAM. Here, participants use storytelling as a foundation for engaging with robotics and programming, translating their personal and cultural narratives into interactive projects that incorporate engineering learning. This approach not only bridges technological skills with artistic expression but also respects and incorporates the diverse cultural backgrounds of learners into the technological sphere.

Building and programming robots, such as the ones that perform tasks like uncapping bottles or assisting with logistics in warehouses, involves understanding and applying concepts from multiple STEAM disciplines like computer science, electrical engineering, and mechanical engineering, integrated with a design thinking approach that can be significantly augmented by artistic perspectives.

Briefly explain how skips can be traced

Answers

skipps can be traced by a trackker i  think

Tracing skips can help educators and platforms gain a better understanding of student learning patterns and identify areas where additional support or improvements may be needed.

So,

Skips can be traced using various methods. One common method is by analyzing the skip patterns. Skips occur when a student skips a question or leaves it unanswered.

By examining the sequence of skips, it is possible to identify patterns that can be helpful in understanding the student's thought process and learning gaps.

Another way to trace skips is through data analysis. Online learning platforms, like Brainly, can track skips by recording when a user moves on to the next question without attempting to answer the previous one. This data can be used to identify areas where students struggle or lose interest.

Know more about skips,

https://brainly.com/question/28099497

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At a local burger chain, a customer became extremely angry. Everyone took notice at the person, who was yelling at anyone he could. Donald, the branch manager, politely approached the customer and quickly defused the situation. What type of skills did Donald display?

Answers

Answer: Donald, the branch manager displayed people skills  

Explanation: People skills are a combination of behavior and behavioral interactions between people. There are many abilities that fall under the category of people skills, for example, personal effectiveness, interactive skills and negotiation skills. While the customer was shouting, Donald patiently heard and tried to calm the customer which reflected that he respected and valued the customer and kept a positive behavior towards the customer.


Answer: People skills

Explanation: i did the quiz

Express 0.0005 x 10-4 farads as picofarads

Answers

0.0005 x 10⁻⁴ Farad = 0.000 000 05 Farad.
1 pF = 0.000 000 000 001 Farad

Divide them and get 50000 pF.
0.0005 x 10⁻⁴ Farad = 0.000 000 05 Farad.
1 pF = 0.000 000 000 001 Farad

Divide them then you will get 50000 pF.

hope this helps:D!!!

A traveler's budget and needs are considered by a _________ when arranging a trip.

Answers

A traveler's budget and needs are considered by a manager when arranging a trip.

What is road trip?

A Road Trip, on occasion spelled road trip, is an extended-distance adventure on the road. commonly, road journeys are long distances traveled with the aid of a car.

Taking a road ride lets you get off the crushed course and spot actual communities and herbal wonders, no longer just a train tune or a view from 36,000 ft. Meandering via the countryside is an awesome way to loosen up and discover what it's without a doubt like to stay in a selected vicinity.

The difference is your expectation. trips are something which you do and it regularly has a cause. alternatively, vacations are approximately the enjoy. road journeys are fun because they offer complete freedom over your journey. you can tour everywhere your car can take you and produce anything that fits inside the trunk. there is nowhere you need to be so that you are loose to permit all of life's expectancies to melt away and simply experience the moment.

Learn more about  Road Trip here:

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Eden has observed that some of his sheep are losing weight. He wants to increase their weight in order to gain more profit from their meat. Which feed additive should he use? concentrates antibiotics dry roughage silage

Answers

The answer is Concentrates

Concentrates are feeds that are high in energy value and include fat and cereal grains and their by-products. They are very low in fiber and are usually highly digestible. They produce high and rapid gains in animals that feed on them.



Answer:

Eden should use CONCENTRATES as an additive

Explanation:

Animal feeds that are composed of concentrates added to them will have a very good increase in its fat content and low fiber which will aid the easy digestion of the feeds taken by  the animal. for the animals to gain more weight means more fat has to be added to their feed and concentrates feeds bridges that gap. the concentrates feed is also a source of energy for the sheep when used to feed the sheep. the fatter and stronger the sheep the better their meat and the more profit for Eden when he takes them to the market for sales. concentrates is an animal feed additive reach in fat and less fiber and it also composed of cereal grains.

A personal investing plan:


a)
Should be prepared every six months by a different financial advisor

b)
Is a good way to build toward a financial goal

c)
Will always have funds from a single mutual fund company

d)
Will focus on small-cap stocks for those people who do not like risk of any kind

Answers

A personal investing plan:



b)
Is a good way to build toward a financial goal

Final answer:

The correct answer is (b) A personal investing plan is a good way to build toward a financial goal, emphasizing long-term financial planning, the importance of diversification, and the general inadvisability of expecting financial advisors to beat the market consistently.

Explanation:

The correct answer to the question is (b) A personal investing plan is a good way to build toward a financial goal. A personal investing plan is instrumental for setting long-term financial objectives and establishing guidelines to achieve them. While some investors may opt to diversify their portfolio by investing in mutual funds, it is essential to remember that each fund typically consists of a diversified collection of stocks, helping mitigate the risks associated with investing in a single company or sector.

It is not necessary to prepare a personal investing plan with a different financial advisor every six months, as consistency and a clear understanding of one's financial goals and risk tolerance are key. Additionally, personal investing plans do not need to be composed solely of funds from a single mutual fund company, and they should not focus exclusively on small-cap stocks, especially for those averse to risk.

Effective financial planning and diversification are fundamental to managing investment risks. While financial advisors can provide valuable guidance, it's a well-acknowledged fact that they cannot guarantee beating the market. For most individual investors, particularly small investors, a diversified investment strategy encompassing mutual fund shares of reputable companies over time aligns better with accomplishing financial goals than trying to select individual stocks or relying on timing the market.

Monica and Tyrell agree upon the main problem they are facing as a team. What is the next step to finding a win-win solution? Agree upon the main problem Brainstorm possible solutions Identify the problem Negotiate a solution

Answers

brainstorm possible solutions 

Answer:

Monica and Tyrell should Brainstorm possible solutions

Explanation:

since Monica and Tyrell have agreed upon the main problem facing them as a team the best next move is to Brainstorm possible solutions.

Agree upon the main problem: this step have already been taken by Monica and Tyrell after they agreed upon the problem facing them as a team

Brainstorm possible solution is the ultimate next step/move they should take

identify the problem : this was the first step taken

Negotiate a solution: this is the next step after Brainstorming and getting series of solutions they will have to negotiate on the best solution to implement


3. The phrase used to describe a society in which information is sought out, evaluated, and valued is

A. informed democracy.
B. informed society.
C. information maturity.
D. information literacy.

Student Answer: D
Answer: Incorrect
Reference: PAGE 32

Answers

Answer:

Information maturity is

the phrase used to

describe a society in

which information is

sought out, evaluated,

and valued.

Explanation:

You invested $1,200 in a mutual fund. Your account now has a value of $1,333. Your gain was:
a)$133 b)$233 c)$1,200 d)$1,333

Last one I promise

Answers

Your gain was 133 dollars 
Your gain was a) $133

To find this we subtract original number from new number.
1,333 - 1,200 = 133


Hope this helps you! (:
-Hamilton1757

You put $500 in an interest bearing bank account that pays 2% per year but has a fee of $2 per month. Are you getting ahead?
a)Yes b)No c)Can't tell



Answers

The answer is b) No

2% of 500 is 10.
$10 interest per year.

There are 12 months in a year. $2 per month
2 * 12 = 24
$24 a year is the fee. 

So, if you have a $10 interest per year, but are paying $24 per year on a fee, you are not getting ahead. 


Hope this helps you! (:
-Hamilton1757
The answer is B

With 500 dollars, you would be making 10 dollars a year on that account, within 5 months the money you have gained will be take for the fee. Leaving 7 months left that you will be coming out of pocket 14 dollars.

what is an advantage and disadvantage to file compression

Answers

not much but here is my answer
good: saves storage
bad: can corrupt files and lose them

Final answer:

File compression reduces file size, making storage and transfer more efficient. However, it can lead to a loss of quality.

Explanation:

An advantage of file compression is that it reduces the file size, allowing for more efficient storage and transfer of data. Compressed files take up less space on a computer or storage device, which can be particularly beneficial when dealing with limited storage capacity. This can be especially helpful when sending files over the internet, as smaller file sizes can be transferred more quickly.

A disadvantage of file compression is the loss of quality that can occur. When a file is compressed, some information is discarded or altered, leading to a decrease in the overall quality of the file. This is particularly noticeable in image and video files, where compression can result in a loss of detail and visual fidelity. It's important to find a balance between file size reduction and maintaining acceptable quality.

Can someone write a 5 sentence summary about Virtual Assistants. Please. I'm in a rush. Personal problems.

Answers

Virtual Assistants can be useful. Blind people can use them to be informed, browse the web, and learn new facts. They can make tasks quicker too. They can control things like your heater or air conditioner. But if one were to malfunction, it could take lives.

What are some common qualifications/skills required of an employee in the Administration and Information Support career pathway? critical thinking skills, accuracy/attention to detail, and math skills creativity, teamwork, and verbal communication skills strong mathematics, computer knowledge, and research skills organizational skills, patience, and verbal communication skills

Answers

organizational skills, patience, and verbal communication skills


Answer:

d on edg 2020

Explanation:

What is labor and how does it relate to automobile!!!! NEED HELP PLEASEE

Answers

Like labor? Probably needs fixing so I would go to your dealer, definitely do NOT go to to a Jiffy Lube, go to a Les Shwabe tires shop or something depending on if it is a check engine light or not. Your oil may be low or it may be that the transmission is out 

Which describes the purpose of the continue statement in Java?

A.do not calculate
B. go back to the beginning
C. ignore this block
D. skip to the next line

Answers

your answer is d skip to the next line



Shannon has been a member of her schools newspaper club for 2 years and attends writing workshops in her free time. Which career choice should she explore

Answers

Due to that I think that she should pursue the career of an author or Newspaper Editor. Hope that helped :)

Answer:

I think she should pursue a career in content writing

Explanation:

Since she has been a member of her school newspaper club she already has the skill coupled with the writing workshop she attends in her free time. I think a career in content writing will be best for her.

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What is the vertex of the quadratic y=-2x^2-4x-5 Find the solution of this system of equations. Separate the x- and y- values with a comma. x+4y=1 and x-y=1 When only one pair of shared electrons is involved in a covalent bond, the linkage is called a ________ bond. triple double single resonant? Write an inequality comparing 19 and 30 Which of the following situations involve opposite quantities combine to make 0?a. Eva has a new piggy bank. She adds 7 quarters on Wednesday and then adds another 5 quarters on Friday.b. David made lemonade. He had 2 12 liters of water and used 5/2 liters for lemonade. which of the following represents a stable octet? A 1s2 2s2 2p6 3s2 3p6 4s2B [He] 2s2 2p3C 1s2 2s2 2p1D [Ne] 3s2 3p6 What was the lifestyle of the aristocracy of the ancien regime? what hint does the author of " How to jump-start a car battery" give for remembering that you should connect the positive clamp onto the battery before the negative clamp?A. you should always start a conversation in a positive manner, even if you know the outcome will be negative.B. Negative outcomes always come after positive actions.C. you should give positive feedback to your friend Marvin about his tuba recital before negative.D. Having a positive attitude should always be your first approach to any problem Which energy carriers are produced be the Calvin cycle Please help!!! Spanish!!1. Una vctima se cort la pierna; otra vctima se cort el brazo. Las dos tienen _________. 2. _____ _____ lleva a la vctima al hospital. 3. Despus de ir al hospital y recibir ayuda la vctima va a _______ mejor. what is the length of xz The function g(x)=(x-2^2. The function f(x)=g(x) +3The function f(x) is shifted horizontally how many places to where ?The function f(x) is shifted vertically how many places where ? A right rectangular prism has base dimensions of 3 inches by 12 inches and a height of 5 inches. An oblique rectangular prism has base dimensions of 4 inches by 9 inches and a height of 5 inches. Are the volumes the same? Many of the original English colonists (including the Pilgrims in Plymouth and the Puritans in Massachusetts Bay Colony) were religious people who disagreed with some practices of the Church of England. Why did these groups want to settle colonies in the New World? A homeowner plants two flowerbeds around his garage. What is the total area he will have planted. Round to nearest tenth. Hey can you please help me posted picture of question A skier leaves an 8-foot-tall ramp with an initial vertical velocity of 28 feet per second. the function h = 16t^2 28t 8 represents the height h (in feet) of the skier after t seconds. the skier has a perfect landing. how many points does the skier earn? 1 point per foot in the air, 5 points per second in the air, and a perfect landing is 25 points. A lady bought plates and bowls, 24 items in all. The price of each bowl was 60 cents; the price of each plate was 75 cents. The cost of the whole purchase was $15. How many plates did the lady buy? You are considering two investment opportunities. For investment A there is a 25% chance that you lose $20,000, a 50% chance that you break even, and a 25% chance that you make $80,000. For investment B there is a 30% chance that you lose $50,000, a 50% chance that you break even, and a 20% chance that you make $180,000. Based on the expected value of each, which investment should you make? What binary compound would be formed from barium ions and fluoride ions?