The solution to the system of equations using the reduction method and substitution method are:
x = 12/5
y = 9/5
What is reduction and substitution?Method 1: Reduction
Note that the system of equations:
Equation 1: 2x - y = 3
Equation 2: x + 2y = 6
Hence
2 * (2x - y) = 2 * 3
4x - 2y = 6
so:
Equation 3: 4x - 2y = 6
Equation 2: x + 2y = 6
so, add Equation 3 and Equation 2 together and remove the variable y:
(4x - 2y) + (x + 2y) = 6 + 6
5x = 12
So solve for x:
5x = 12
x = 12/5
So, Substitute this value of x into Equation 2:
x + 2y = 6
12/5 + 2y = 6
2y = 6 - 12/5
2y = 30/5 - 12/5
2y = 18/5
y = 9/5
The solution to the system of equations using the reduction method is:
x = 12/5
y = 9/5
Method 2: Substitution
Note that the system of equations:
Equation 1: 2x - y = 3
Equation 2: x + 2y = 6
So look for Equation 1 for x:
2x - y = 3
2x = y + 3
x = (y + 3)/2
So, also substitute this expression for x into Equation 2:
(y + 3)/2 + 2y = 6
(y + 3) + 4y = 12
5y + 3 = 12
5y = 12 - 3
5y = 9
y = 9/5
So, by Substituting this value of y back into Equation 1:
2x - (9/5) = 3
2x = 3 + (9/5)
2x = 15/5 + 9/5
2x = 24/5
x = (24/5) * (1/2)
x = 12/5
So, the solution to the system of equations using the substitution method is also:
x = 12/5
y = 9/5
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What is a good analogy to explain plate tectonics?.
Answer:
tiles
Explanation:
you could just talk about how how two tiles slide across each other, causing friction, etc
What is a terrane? What is a terrane? a slice of lithosphere that has been taken away from the margin of a continent during plate collision a slice of lithosphere that has been taken away from the margin of a continent during plate extension a slice of lithosphere that has been added to the margin of a continent during plate collision a slice of lithosphere that has been added to the margin of a continent during plate extension
Answer:
The answer is "The first choice".
Explanation:
The terrane is a lithosphere part that was added in a plate collider mostly on edge of a continent. These all such blocks of global fragments or oceans have met and now are permanently bound to one world. Throughout the deeper portion of all continents, except North America, fairy shrimp tend to reach adulthood or over time from the outside.
Which of the following is an example of a population? (3 points) All of the plants that grow in the same climate around the equator A forest where an eagle is about to eat a squirrel All of the coyotes that use the same resources and inhabit the same forest The earthworms that live in a grassland, plus the earthworms that live in a forest
A population refers to all the members of a species that live in the same habitat. All of the coyotes that use the same resources and inhabit the same forest is an example of a population.
A population refers to all the members of a species that live in the same habitat, meaning they live in the same geographic location and have the potential to interbreed and produce fertile offspring. Populations can range from tiny to enormous, spanning only a few square meters or the entire planet. Because the environment is finite and can only support a certain number of individuals, populations are often limited in size.
The carrying capacity of a habitat is the maximum population size it can sustain. Therefore, population size is determined by the number of births, deaths, immigration, and emigration that occur over time. Examples of populations :All of the coyotes that use the same resources and inhabit the same forest is an example of a population.
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A scientist interested in investigating how human population trends might affect local animal species" richness stipulates a null hypothesis that animal biodiversity in rural areas will be unaffected in the future by the human population trends shown Which of the following would best refute this null hypothesis
Urbanization decreases the per person fossil fuel use in urban areas.
Water in urban areas is treated before it is released into the rivers that flow into rural areas
Urbanization decreases the per person fossil fuel use in urban areas.
Water in urban areas is treated before it is released into the rivers that flow into rural areas
None of the options provided would best refute the null hypothesis stated. The null hypothesis states that animal biodiversity in rural areas will be unaffected in the future by human population trends. The options provided do not directly address this hypothesis and do not provide evidence for or against it.
To refute this null hypothesis, a study would need to show a statistically significant decrease or increase in animal biodiversity in rural areas that can be attributed to human population trends. To answer your question, the best way to refute the null hypothesis that animal biodiversity in rural areas will be unaffected by human population trends is to provide evidence that human population trends have a direct impact on animal species richness in rural areas.
One possible option is:
- Increased urbanization leads to habitat loss and fragmentation in rural areas, resulting in a decline in animal species richness.
In this case, a scientist investigating the relationship between human population trends and animal species richness would collect data on urbanization and habitat changes in rural areas and analyze the impact on animal biodiversity. If the results show a significant decline in species richness due to urbanization, the null hypothesis would be refuted, suggesting that human population trends do affect animal biodiversity in rural areas.
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PLS HELP ME ASAP I WILL MARK THE BRAINLIEST
A resource is something that we use. Material found in nature becomes a resource when it is
Question 1 options:
Beneficial to plant and animal life
Used to make a profit
Developed for sale as a product
Deemed valuable to humans
Question 2 (1 point)
Which of the following is a true statement about the economic development of nations?
Question 2 options:
All but a few countries are developed nations today
Resources and technology influence the economic development and quality of life of nations
Although important, the economic development of nations has little effect on the quality of life of its people.
Modern technology is so widespread today that most people around the world have an acceptable quality of life.
Question 3 (1 point)
Because the Earth’s resources are not evenly distributed across its surface
Question 3 options:
global economic interdependence is declining.
most countries have the resources they need to survive and grow.
countries must engage in trade to get the goods they need to survive.
most people in the world are engaged in tertiary economic activities.
Question 4 (1 point)
Countries engage in trade to ________ goods and services they need, and to ________ goods and services that they can market for profit.
Question 4 options:
import, export
export, import
export, sell
exchange, export
Question 5 (1 point)
Advance in technology have caused man to progress from the use of _______ for energy.
Question 5 options:
coal to wood
nuclear energy to petroleum
petroleum to water
wood to petroleum
Question 6 (1 point)
Competition for resources—
Question 6 options:
always leads to conflict
has little effect on the economic strength of nations
mainly has a positive effect on the economy of a nation
may lead to cooperative efforts or to conflict
Question 7 (1 point)
All of the following are examples of economic unions except:
Question 7 options:
OPEC
NATO
NAFTA
EU
Question 8 (1 point)
If Country A produces goods more efficiently than Country B, both countries are more productive when Country A specializes in the task in which it has the greatest relative advantage. This is known as the …
Question 8 options:
Law of Comparative Advantage
Law of Economics
Law of Global Interdependence
Law of International Trade
Question 9 (1 point)
Modern ________ networks allow rapid and efficient exchange of goods and materials.
Question 9 options:
Ecological
Telecommunication
Transportation
Industrial
Question 10 (1 point)
Which of the following factors has directly contributed to globalization?
Question 10 options:
Agriculture technology
Communication technology
Commercial technology
Industrial technology
Answer:
1) (A) —— Valuable for plants and animals.
2) (B) —— Resources and technology influence the economic development and quality of life of nations.
3) (C) —— Countries must engage in trade to get the goods they need to survive.
4) (A) —— Import and Export.
5) (C) Petroleum to water.
6) (D) —— May lead to cooperative efforts or to conflict.
7) (B) NATO.
8) (A) —— Law of comparative advantage.
9) (B) —— Telecommunication.
10) (B) —— Communication technology.
Explanation:
Hope this helps
( I was typing the answers few mins ago but phone just took me back to my home screen and I lost this question, but I'm happy to still help )
What responsibilities does the wendys have in conservation of
water
As a fast food restaurant chain, Wendy's has a responsibility to contribute to the conservation of water.
Here are some key responsibilities that Wendy's can undertake in water conservation efforts:
1. Efficient water management: Wendy's can implement efficient water management practices in its restaurants. This includes regularly monitoring water usage, identifying and fixing leaks promptly, and investing in water-efficient appliances and fixtures such as low-flow faucets and toilets. By reducing unnecessary water consumption, Wendy's can contribute to water conservation.
2. Employee training and awareness: Wendy's can educate its employees about the importance of water conservation and provide training on best practices for minimizing water usage. By raising awareness and instilling a culture of water conservation among its staff, Wendy's can encourage responsible water use in its day-to-day operations.
3. Sustainable supply chain: Wendy's can work with its suppliers to ensure that the agricultural practices used for its food production are water-efficient and sustainable. This includes promoting the use of efficient irrigation systems, supporting farmers who prioritize water conservation, and sourcing ingredients from regions where water resources are managed responsibly.
4. Partnerships and collaborations: Wendy's can collaborate with local communities, water conservation organizations, and governmental agencies to support initiatives aimed at water conservation. By actively participating in water conservation programs and sharing best practices, Wendy's can contribute to broader efforts to protect and conserve water resources.
5. Public awareness and engagement: Wendy's has a platform and influence to raise public awareness about water conservation. Through its marketing campaigns, social media presence, and customer interactions, Wendy's can promote the importance of responsible water use and encourage its customers to adopt water-saving habits.
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Dutch Paintings that emphasize the ephemerality of life might be
described as. Or. (two answers). Please fill in the
blanks
Dutch Paintings that emphasize the ephemerality of life might be described as memento mori or vanitas.
Memento mori and vanitas are two terms commonly used to describe Dutch paintings that highlight the transience and fleeting nature of life.
Memento mori is a Latin phrase that translates to "remember you must die." In art, it refers to the depiction of symbols and imagery that serve as reminders of mortality and the inevitability of death. Dutch artists often incorporated skulls, hourglasses, extinguished candles, and wilting flowers into their paintings as reminders of life's impermanence. These symbols were intended to prompt viewers to reflect on the brevity of human existence and the importance of leading a virtuous and meaningful life.
Vanitas, on the other hand, is a genre of still life painting that emerged in the 17th century Netherlands. Vanitas paintings typically feature objects such as skulls, hourglasses, musical instruments, books, and decaying fruits, which symbolize the transient nature of wealth, pleasure, knowledge, and beauty. The term "vanitas" itself is derived from the Latin phrase "vanitas vanitatum," meaning "vanity of vanities." These paintings serve as reminders of the futility and emptiness of earthly pursuits and the ultimate insignificance of material possessions in the face of mortality.
Overall, both memento mori and vanitas paintings in Dutch art are characterized by their poignant portrayal of the ephemerality of life and the reminder of the inevitability of death. These artworks invite viewers to contemplate the fleeting nature of human existence and consider the importance of spiritual and moral values in the face of mortality.
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of you know southern and eastern asia geography please help
Answer:
1. Japan
2. India
3. South Korea
4. Vietnam
5. North Korea
6. China
A. Sea of Japan
B. South China Sea
C. Yellow Sea
D. Huang He
E. Bay of Bengal
F. Yangtze
G. Ganges River
H. Indian Ocean
Explanation:
Under numbers we have countries of Southern and Eastern Asia. The largest among them is China (6).
Under letters we have water surfaces, including rivers and oceans.
Answer:
the other guy is right
Explanation: give him brainliest because im du-mb
Which precipitation and vegetation descriptions best fit an Aw climate in the Köppen classification? Which precipitation and vegetation descriptions best fit an Aw climate in the Köppen classification? Well-defined winter dry season; savanna with drought-tolerant trees Every month has 6 cm of precipitation or more; lush tropical vegetation At least 10 times as much precipitation in a summer month as the driest winter month; vegetation short and thick Well-defined summer dry season; vegetation sparse Short dry season, precipitation of driest month has less than 6 cm but equal to or greater than 10-R/25; thick green vegetation
Answer:
Well-defined winter dry season and savanna with drought-tolerant trees
Explanation:
In the Köppen classification, Aw climate refers to Tropical savanna climate with dry-winter characteristics. In this climate, there is low rainfall in winter which make it very dry while on the other hand, more rainfall occurs in the summer season. The vegetation of such type of climate is drought resistance because there is less amount of water is received by the area in this type of climate so that's why we can say that Aw climate is Tropical savanna climate.
Little Rock, AR was still under the influence of the East Coast high. The wind at Little Rock, where the pressure was plotted "122," meaning 1012 mb, showed the air was moving generally toward the at 5kis. A. North b. Southc. Westd. Cast
Horses originated during the Eocene period 50 million years ago in Europe, Asia, and North America, at a time when South America was separated by sea. What might be one explanation for how scientists are finding horse fossils in South America?
One explanation for how scientists are finding horse fossils in South America is that the continents of South America and North America were connected by land bridges during the Pleistocene period (1.8 million to 11,000 years ago).
What is Pleistocene period?The Pleistocene period is a geological epoch that lasted from approximately 2.588 million to 11,700 years ago. It is the most recent and longest of the three epochs of the Quaternary period, followed by the Holocene and preceding the Pliocene. During this period, the Earth’s climate transitioned from the warmer Pliocene to the colder Pleistocene, with the start of the Quaternary glaciation.
During this time, horses could have migrated from North America to South America, leaving behind fossils in the process. This land bridge eventually disappeared due to rising sea levels, which is why horses are not found in South America today.
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What are the landform feature of the Sahara Desert
Answer:
The principal topographical features of the Sahara include shallow, seasonally inundated basins and large oasis; extensive plains; plateaus ; abrupt mountains; and sand sheets, dunes, and sand seas.
Explanation:
Which clouds are formed at the Intertropical zone
If synergize were an object, what would it be and why?
It would be the shape of Frosty Da Showman.
I would actually guess it to be the shape of a bottle rocket. Like flat at the bottom, then it goes up, then rounds off at the top.
which European countries have dependencies in the west indies
what are all the parts of the atmosphere
Answer:
The atmosphere is comprised of layers based on temperature. These layers are the troposphere, stratosphere, mesosphere and thermosphere. A further region at about 500 km above the Earth's surface is called the exosphere
Answer:
tropospherestratospheremesospherethermosphereexospherehope it helps.
Why is poor weather usually associated with a low pressure system?
Answer:
This is because the temperature is higher in the upper part of the atmosphere. As water vapor condenses, it creates clouds, precipitation, and generally unsettled weather. Because air rises near areas of low pressure, this type of weather often occurs in lows.
Explanation:
explain any seven sources of income from biodiversity.
Background
Each Species has a Role
Biodiversity is “the variability among living organisms from all sources including terrestrial, marine and other aquatic ecosystems, and the ecological complexes of which they are part; this includes diversity within species, between species, and of ecosystems.” It is the foundation of life on Earth. - International Union for Conservation of Nature, (About Biodiversity, http://iucn.org/what/tpas/biodiversity/about at 11/14/2011)
Each species has a specific niche, a specific role and function in an ecosystem. These roles include capturing and storing energy, providing food, predation, decomposing organic matter, cycling water and nutrients, controlling erosion, controlling pests and climate regulation.
Considering where California is on the globe, what bands of latitudes is most of California found?
Group of answer choices
Low Latitudes
Equatorial Latitudes
High latitudes
Midlatitudes
Most of California is found in Midlatitudes.
Midlatitudes are located between 23.5° and 66.5° north or south of the Equator and are characterized by moderate temperatures, prevailing westerly winds, and a mix of environments including forests, grasslands, and deserts. California is located between 32° and 42° north of the Equator, which places it in the midlatitude band. This band experiences warm summers and mild winters, with the coast having a Mediterranean climate and the interior having a hot-summer Mediterranean or semi-arid climate. Midlatitudes are also known for their variability in weather patterns, with fronts and storm systems bringing precipitation to the region. The location of California in the midlatitudes helps to make it one of the most agriculturally diverse regions in the world, with a wide range of crops being grown in the state.
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Imagine you could travel in a straight line through Earth from a point on one
side and come out on the other side. What compositional layer would you
travel through in the exact center of Earth?
A. core
B. crust
C. lithosphere
D. mesosphere
Can someone HELPP meeee pleaseee
The compositional layer that we would travel through the exact centre of Earth is the core. The correct option is a.
What do you understand by the term core?Earth has two layers of core, they inner and outer core. The Inner Core has the centre and the hottest layer of the Earth. The inner core is solid and made up of iron and nickel with temperatures up to 5,500oC. Due to its immense heat energy, the inner core is more like the engine room of the Earth.
The outer core of the Earth is similar to a very hot ball of metals, whose temperature is around 4000 oF to 90000F. It is so hot that the metals inside are all liquid. The outer core is around 1800 miles under the crust and is approximately 1400 miles thick. It is composed of metals such as iron and nickel.
The outer core surrounds the inner core.
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how can economic growth can have harmful impacts on the environment?
Answer:
If the economy grows too much too quickly, it can cause a surplus of materials and it can cause countries to fight over them.
Explanation:
Hope this helps
Answer:
The increase in economic growth will also mean that there will be more supply of everything, meaning more factories to be build and pollution. It also provides new opportunities to develop civilization and construction would mean more trees being cut down and areas to be flatten for houses, and the animals will lose their homes.
new research based on footprints found in the us southwest suggests humans may have been in north america before 21,000 years ago. 21,000 years ago was the radiocarbon date of organic material in the layer above the footprints. therefore, this layer functioned as a: anthro 2ac
The layer above the footprints found in the US Southwest functioned as a marker for the radiocarbon date of organic material, which was 21,000 years ago. This means that humans may have been in North America before this time period, as suggested by the new research based on the footprints.
Radiocarbon dating is a technique used to determine the age of organic materials based on the decay of carbon-14 isotopes. The layer above the footprints served as a reference point for the radiocarbon date of the organic material found in it. This date of 21,000 years ago suggests that humans may have been in North America before this time period, which challenges the previously held belief that humans arrived in the Americas around 13,000 years ago. However, further research is needed to confirm this theory and determine the exact timeline of human migration to North America.
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Which of the following occurred as a result of the development of agriculture in societies that previously relied on hunting and gathering?
A) The incidence of disease declined
B) Population density increased
C) Polytheism disappeared
D) Degradation of environment lessened
how many major power plants are in operation now. list
Answer:
Nuclear Power is the fifth-largest source of generating electricity in India after coal, gas, wind power and hydroelectricity. At present, India has 22 operational nuclear reactors with an installed capacity of 6,780 MW in 7 nuclear power plants.
what 2 statements about political maps are accurate?
Answer:
Explanation:
1. Political maps depict the boundaries and territories of countries, states or other administrative regions.
2. Political maps typically show the locations of major cities, capital cities, and other important places such as airports, ports, and military bases.
what is most likely inferred about the potential of biomass energy compared to hydroelectricity in north america based on these maps?
According to world map of potential renewable energy, the potential for biomass energy is slightly greater than hydroelectricity North America.
Biomass energy has a marginally higher potential than hydropower. This is primarily due to the requirement for multiple dams to be built in order to generate hydroelectricity. Dam construction cannot take place on adequate land in North America.
Only a few locations in North America are suitable for building dams because they require a large amount of space. The energy units for biomass are compact and simple to assemble. Because of this, biomass energy plants can be built everywhere that biomass is present or can be made present.
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When a volcano erodes and the solidified conduit is exposed, it is referred to as a volcanic ______.
Answer:
When a volcano erodes and the solidified conduit is exposed, it is referred to as a volcanic neck
what is the discharge required to fill the notch and begin to spill onto bottomland?
The discharge required to fill the notch and begin to spill onto bottomland is known as the critical discharge. It is the minimum rate of water discharge needed to fill a notch and cause the water to spill over into the adjacent low-lying area.
The notch is used to regulate the flow of water through a channel. The critical discharge is an important factor in hydraulic engineering because it determines the amount of water that can be safely carried by a channel or river channel without causing damage to the surrounding area.The critical discharge is dependent on several factors such as the width and depth of the channel, the slope of the channel, and the velocity of the water. The critical discharge is used to determine the design of hydraulic structures such as weirs, spillways, and dams. It is important to ensure that the critical discharge is calculated accurately in order to prevent flooding and other water-related disasters. Additionally, it is important to monitor the water level and discharge in order to be prepared for any sudden changes in water flow that may occur due to changes in weather or other environmental factors.
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Climatologist-geographer Alfred Wegener used his spatial view of the world to develop the theory of
a) relativity.
b) the hydrologic cycle.
c) continental drift.
d) Earth rotation.
Climatologist and geographer Alfred Wegener used his view of space to develop the theory of continental drift.
Option c is correct .
Based on these observations, Wegener hypothesized that the continents were once connected into a single continent, which he named Pangea. He theorized that over time the continents separated and drifted to where they are today. Wegener hypothesized that continental drift was caused by forces below the surface of the earth.
Wegener's theory of continental drift was groundbreaking because it challenged the popular belief that continents are stationary. However, at that time he was unable to give a satisfactory explanation of the mechanism that causes continental movements. It was not until the 1960s, when his theory of plate tectonics was developed, that Wegener's ideas became more widely accepted and incorporated into our understanding of the Earth's dynamic geology.
Hence, Option c is correct .
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Which statement best describes the most likely effect the fire had on the river in the
12 months after it occurred?
A. less sediment flowed into the river because the fire heated up the soil and made it drier.
B. The amount of vegetation increased and less sediment flowed into the river because the
fire produced ash that mixed with the soil.
C. More sediment flowed into the river because the fire destroyed most of the vegetation
holding the sediment in place,
D. More sediment flowed into the river because the fire disrupted animal habitats and caused
animals to leave the area
Answer: C. More sediment flowed into the river because the fire destroyed most of the vegetation holding the sediment in place.
Explanation: Pretty much the only logical explanation I think but sorry if I'm wrong.