2x+3y=12
x-5y=-7
solve simultaneously
Answers
Related Questions
what is a cell wall and what are its functions
Answers
Answer:
a rigid layer of polysaccharides lying outside the plasma membrane of the cells of plants, fungi, and bacteria. In the algae and higher plants it consists mainly of cellulose.
Explanation:
i hope this helps!
Question - All of the oxygen on the earth comes from
Answers:
1. producers releaseing it as a a product of photosynthesis
2. the clouds making it when the earth formed
3. heterotrophs breathing it out into the atmosphere
Answers
Answer:
1. producers releasing it as a product of photosynthesisExplanation:
I hope it helps ❤❤
Name three sources of atmospheric carbon dioxide. (Write in complete sentences and be very detailed.)
This is science.
First and best answer gets 5 stars, a thanks, and a brainliest!
Answers
1. Decomposition
2. Ocean Release
3. Respiration
Answer:
Yes, there are natural sources of atmospheric carbon dioxide, such as outgassing from the ocean, decomposing vegetation and other biomass, venting volcanoes, naturally occurring wildfires, and even belches from ruminant animals.[1]
[1](www.climate.gov/news-features/climate-qa/doesnt-carbon-dioxide-atmosphere-…)
what is reduced soil?
Answers
Answer:
A chain of reactions is initiated upon soil flooding leading to reduced (low) soil redox potential (Eh, mV) conditions. These reactions include physical, chemical and biological processes that have significant implications for wetland plants.
Physical processes include restriction of atmospheric gas diffusion in the soil leading to depletion of soil oxygen and accumulation of carbon dioxide [4,5]. ... This process leads to oxygen depletion and reduction in soil oxidation reduction potential (Eh) followed by a chain of soil chemical changes.
How could one determine if two
unidentified organisms share a common
ancestor?
Answers
Answer:
Evolutionists determine that two organisms have a common ancestor is by looking at fossil evidence in different rock layers using the law of Superposition (Oldest layers are on the bottom, newest are on the top) and compare the skulls or other bones to each other in order of oldest to newest (or newest to oldest). Another way to determine this is to examine the amount of DNA a certain species shares with another species. An example of this would be that Humans share roughly 90% of our DNA with chimpanzees or the other Great Apes.
Explanation:
DNA
They can look at the DNA it's the most common one.
There are 4 pieces of evolution and they are
Fossils , Geography , Embryos / DNA , Anatomy
Fossils: Physical remains of species , Determine age, location, environment
Deeper layers = older
Geography: Proves species share common ancestors, depending on where
they live
DNA: BEST evidence because it’s the MOST ACCURATE
Similarities in the early stages of development
Similarities in DNA
More similarities = closely related
More differences = not related
Anatomy: Compare body parts of different species to see how they evolved
3 different structures:
Homologous (same structure, different function)
Analogous (similar structure, different organisms)
Vestigial (body parts that no longer serve a purpose)
All of that are in evolution
Hope it helped! ( Gave u my biology notes :D)
True or false scientific name tells you to family in which the organism belong
Answers
Answer:
False
Explanation:
A scientific name for a species is a unique name, which means that no species can have the same scientific name. The scientific name of a species tells you the genus and the species name of an organism. The genus comes first in the name and is the more inclusive group of organisms.
Which statements about freshwater sources are true? Check all that apply. B Only about 3 percent of Earth's water is fresh water Most of the fresh water on Earth is groundwater. About 75 percent of the fresh water on Earth is frozen in ice sheets. The largest source of usable fresh water is groundwater. More fresh water is in the atmosphere than in rivers and lakes.
Answers
Answer:
all but 3 percent
Explanation:
because i looked it up
Answer:
groundwater is correct
Predict the effect on shrubs growing in one area if they are treated with a compound that blocks electron flow through the electron transport chains of chloroplasts. Provide reasoning to justify your prediction.
Answers
Answer:
The shelves or die and will not be able to produce sugars. Blocking electron flow prevents the formation of the proton gradient required to produce the ATP used for sugar production.
The shrubs will die because they cannot photosynthesize. Without it, plants begin to wilt and finally die because photosynthesis requires light.
In the absence of photosynthesis, do plants die?In essence, photosynthesis is the mechanism that powers the survival and growth of plants and even algae. The majority of plants would perish quickly if photosynthesis suddenly stopped.
Night-time is not a time when plants engage in photosynthesis. Only when exposed to the right wavelengths of artificial light during the night can plants perform photosynthesis. Light energy is absorbed with the aid of the pigment chlorophyll. Light energy is converted into chemical energy through the process of photosynthesis.
To learn more about photosynthesis refer to:
https://brainly.com/question/19160081
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Mutations that are passed to offspring must
OCcur
in
Answers
Answer: Gametes
Explanation:
Gen K mengode rambut keriting dan gen k mengode rambut lurus, K dominan terhadap
k. Gen H mengode warna kulit hitam dan gen h mengode warna kulit putih. Kombinasi
dari gen-gen tersebut yang menunjukkan fenotip rambut keriting kulit putih adalah..
Answers
Answer:
The answer is "kkHh".
Explanation:
In this question, the Tight curls Gen K code and short hair k codes, which is used in the generation of the H black and gene H white color code, which is the gene H code. It is the synthesis of the genes that reveals it's solid black, and skin phenotype, that's why the kkHh is the correct answer is.
As scientists advise about potential risks due to climate change, many coastal areas are preparing for a higher risk of impact Predict
which of these has a greater impact on human health in coastal areas due to climate change.
Answers
Since the coast water is rising,it would be hard to find fresh water. The people would not be able to use the water,because it would be contaminated with bacteria. If all of the ice does melt,most of the fresh water will turn to salt water,and we would have to adapt to a new way of life. People would have to live on higher land,there would be no one to grow crops,and their would be no way that trees would survive,meaning we would not be able to breathe.The worst part of this all is that the Earth's temperature will sky rocket,and it will be so hot,the Earth will kinda be like a huge hurricane.(lol)
Hope this helped and good luck!
-Nea
Answer:
C. Increased severity of tropical storms
Explanation:
Due to increased water temp and increased evaporation
Early organisms in the Precambrian era converted to oxygen. O A. sulfur dioxide O B. nitrogen O C. water vapor O D. carbon dioxide
Answers
Answer:
Early organisms in the precambrian era converted _Carbon dioxide_ to oxygen.
Explanation:
hope it helps plz mark me brainliest
de
h.
A coolie of 40 kg weight carries 20 kg salt and climbs up 20 steps of 20
centimeters each in 2 minutes. Calculate the work done by him and his power.
[g= 10 m/s2)
ma
OW
Answers
Explanation:
Given
mass of coolie = 40 kg
Mass of salt = 20 kg
Total mass (m) = 40 + 20 = 60 kg
Displacement (h) = 20*20 = 400 CM = 4 m
Work done (w) = ?
Power (P) = ?
We know we have the formula
work done =force × displacement
or work done = m * g * h
work done = 60×10×4
work done = 2400 joules
Similarly
power = work/time
power = MGH/time
power=60×10×4/120
power=2400/120
power= 20watt
Hope it will help you :)❤
What are the four dna bases
Answers
Answer:
Adenine (A), Guanine (G), Cytosine (C), and Thymine (T)
Explanation:
Hope this helps!
is the black death airborne ?? apparently it isn’t but then why did ppl use those masks ?
Answers
The most common explanation of the transmission of the Black Death is flea bites. Infected fleas were carried on rodents, and these fleas transmitted the virus to humans.
There are still several different theories about how the Black Death was spread, however. There's a Wiki page called "Theories of the Black Death" that may be helpful.
At the time of the Black Death, bacteria and viruses hadn't been discovered yet. People thought that sickness was transferred through bad smells, which were called "miasma."
The long beaks of the masks were stuffed with strong-smelling herbs, spices, and dried flowers—lavender, roses, peppermint—which were thought to keep away the "evil" smells that were thought to cause disease.
Pretty cool stuff!
What is the role of protein channels in the cell membrane?
Answers
Answer:
protein channels to cell membranes
is pathogen a bacteria and a virus? Or just a virus or just a bacteria ?
Answers
Answer:
Both a Bacteria and Viruse
Explanation:
Pathogens are taxonomically widely diverse and comprise viruses and bacteria as well as unicellular and multicellular eukaryotes.
A pathogen is both bacteria and virus but there are other pathogens as well. Pathogen is a very broad term and is just any organism that causes decease.
Question 1 (4 points)
(04.01 LC)
Rocks created from the cooling of magma or lava are called (4 points)
Answers
Answer:
igneous rocks
Explanation:
brainliest plz?
Answer:
the answer is igneous rocks
Explanation:
I did the exact same test because I am also from the same school (FLVS)
Which of the following describes exploratory analysis?
Answers
Ok how about my guinea pig? Please don't report.
Answers
Answer:
HELLO AND THANKS
Explanation:
Helpppppppppppppppppppppppppppppppppp
Answers
Answer:
umm i dont understand your question
Explanation:
Which benefits do mangrove trees provide to surrounding coastal wetlands? Check all that apply.
1 . They hold soil in place.
2 . They store floodwaters.
3 . They maintain surface water flow.
4 . They filter water and improve water quality.
plz help people! :) :( :/ :}
i dont know what to dooo!
Answers
Answer:
1, 2, and 4
Explanation:
1. They hold the soil in place because of their tangled root infrastructure
2. They safeguard the shores from storms, floods
4. They sustain the clarity and quality of water, trapping the sediments and filtering pollutants arising from the land
7. Light-absorbing molecules like chlorophyll found in the photosynthetic organisms are called
(LT#2)
A. thylakoids B. grana C.pigments
D. stroma
Answers
Answer:
C. pigment
Explanation:
please help
Explain how an organ and organelles are related
Answers
Answer:
Just as organs are separate body parts that perform certain functions in the human body, organelles are microscopic sub-units that perform specific functions within individual cells. Organelles are specialized structures that perform various jobs inside cells.
Organelles are microscopic subunits that carry out certain tasks within individual cells, whereas organs are distinct body sections that carry out specialized tasks for the human body.
What is the relation between organ and organelles?Literally, the phrase refers to “tiny organs.” Organelles provide specialized functions to keep a cell alive, much like organs like the heart, liver, stomach, and kidneys serve specific functions to keep an individual alive.
Atoms, molecules, organelles, cells, tissues, organs, organ systems, and the human organism are the major levels of organization in the body, going from the simplest to the most complex.
Like an organ in the body, an organelle is a subcellular structure that performs one or more particular functions for the cell.
Therefore, organ and organelles differ in their functioning.
Learn more about organ and organelles here:
https://brainly.com/question/22911736
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What is the purpose of the other tube of water?
Answers
Explanation:
cant see photo
Answer:
delude the other thing
there is no picture so i have no idea what your asking. ill edit this answer to be more specific when you explain
Explanation:
Write any three differences between infectious and non- infectious disease
please its aurgent
Answers
Answer:
Infectious diseases are transmitted from person-to-person through the transfer of a pathogen such as bacteria, viruses, fungi or parasites. A non-infectious disease cannot be transmitted through a pathogen and is caused by a variety of other circumstantial factors.
Explanation:
Brainliest - Answer Quickly
What is the source of all energy in an lecosystem?
Options:
Cellular Respiration
Photosynthesis
Recycling of Matter
Solar Energy
Answers
Answer:
solar energy
please mark me brainliest..
have a good day
Answer:
SOLAR ENERGY
Explanation:
PLEASE MARK ME AS BRAINLIEST
Which of these describes a way in which humans could increase biodiversity in a marine ecosystem? A. They could introduce new species to the ecosystem. B. They could limit fishing to only one kind of fish in the ecosystem. C. They could ban boating,snorkeling,and scuba diving in the ecosystem. D. They could restrict the amount of each type of fish or shellfish harvested from the ecosystem
Answers
Can someone help me please and thank you!!
Answers
Answer:
It should be the one that's selected in the image.
Explanation:
Triglycerides store unused calories and provide your body with energy. Cholesterol is used to build cells and certain hormones.
Pls help i will mark brainliest
Answers
Answer:
B. Warm ocean water...
Explanation: