The value of the unknown number is 10.5.
Let the unknown number = x
When 20 is subtracted from the number and the result is squared which is equal to the square of the unknown number minus 20:
(x - 20)² = x² - 20
expand the equation;
x² - 40x + 400 = x² - 20
collect similar terms together;
x² - x² - 40x = -20 - 400
-40x = -420
[tex]x = \frac{420}{40}\\\\ x = 10.5[/tex]
Thus, the value of the unknown number is 10.5.
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Answer:
(x - 20)² = x² - 20
expand the equation;
x² - 40x + 400 = x² - 20
collect similar terms together;
x² - x² - 40x = -20 - 400
-40x = -420
how important are mangrove swamp in the population of fishes?
Answer:
They help the area of vegetation around it grow and also gives a lot of craba's a place to stay
Read this paragraph from "How Water Loss Affects Biodiversity."
“When a region experiences a significant drought, many animals may die from lack of water and food. […] If tourism declines due to high wildlife casualties, then the locals who depend on income from tourism will lose their livelihood. People may then turn to farming to earn money, but crops require water to grow. This can place further strain on the water supply and worsen the original problem of the drought.”
What event can cause many animals to die from lack of water and food?
Answer:
Eggs and fried chicken with mentally stabled fries
Explain how the number of electrons in a energy level affects bond formation
Which of the following relationships may present harm to one of the organisms involved? I. Commensalism II. Parasitism III. Predation IV. Mutualism *
Answer:
lll. Predation
I think this is right
Halophiles live in areas of ____
salt concentration.
Answer:
High.
Explanation:
2 H2O 25) Examine the chemical formula shown here. Which of the statements are supported by the information shown here? Select ALL that apply.
A) There are six total atoms present
B) There are three total atoms present There are a total of two oxygen atoms
D) There are a total of four hydrogen atoms
E) There are two total atoms present hydrogen and oxygen
Examine the chemical formula shown here there are three total atoms two of which are hydrogen and one of which is oxygen and this chemical formula can be seen in the process of photosynthesis also.
What is photosynthesis?The process of photosynthesis has been defined as the process in which green plants prepare their own food in the presence of sunlight and during this process heat energy has been converted into the chemical energy and this process has been taken place in the green plant only.
Photosynthesis has the process through which plant cells use carbon dioxide & water to create oxygen & energy rich organic compounds. They do so by converting sunlight ie light energy into chemical energy. This is possible due to presence of chlorophyll in them. Animals can't do so, as they dont have chlorophyll.
Therefore,Examine the chemical formula shown here there are three total atoms two of which are hydrogen and one of which is oxygen and this chemical formula can be seen in the process of photosynthesis also.
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If a chromosome fragment breaks off and then reattached to the original chromosome, but in the reverse direction, the resultant chromosomal aberration is called:
Answer:
An inversion
Explanation:
An inversion occurs when a chromosome breaks in two places; the resulting piece of DNA is reversed and re-inserted into the chromosome. Genetic material may or may not be lost as a result of the chromosome breaks.
what are all the decomposers in the ocean?
Answer:
crustaceans and mollusks, bacteria, fungi, sea cucumbers, starfish, sea urchins, and other kinds of marine worms.
Explanation:
what molecular process is occurring at a higher rate to result in an increase in lacz mrna?
Answer:
RNA Polymerase
Explanation: General transcription factors position RNA polymerase at the start of a protein-coding sequence and then release the polymerase to transcribe the mRNA. Activators enhance the interaction between RNA polymerase and a particular promoter, encouraging the expression of the gene.
Maggots get their energy by breaking down dead and decaying animals. What are maggots? autotrophs producers decomposers heterotrophs.
Food is the source of energy that is used by the organism for the process of metabolism. Maggots are the larva of flies and depend on dead and decaying matters.
Maggots are:
Option C. Decomposers
This type of organism can be explained as:
The organism is classified into different classes according to the nature of its feeding habits.Autotrophs are called the primary producer and break inorganic compounds into organic for energy.Producers are the organism that produces their food by converting solar energy into chemical energy.Decomposers are small-sized organism that lives in soil and breaks the organic compound of dead and decayed bodies.Heterotrophs are organism that depends on other sources and producers for energy.Therefore, maggots are decomposers.
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Answer: C- Decomposers
Explanation:
quiz
HELP. Are gills located internally or externally in the body of animal? DO NOT COPY FROM GÔO.GLE. I'VE ALREADY SEEN THAT AND I DON'T GET IT.
Answer:
sometimes.
Explanation:
external gills are most typically found in amphibians however fishes have internal gills.
The answer isnt yes or no, different species have different gills. Some of them internal others external. Hopefully this answers your question :)
What is the term used to describe when a molecule moves into the cell through a
transport protein but does not require energy to do so?
a) facilitated diffusion
b) osmosis
c) active transport
d) filtration
What’s the correct answer
how the disease spread by bacteria transmit from one person to another explain.
Explanation:
Germs can spread:
directly from person to person orindirectly from an infected person to the environment (for example toys, door handles, bench tops, bedding and toilets) and then to another person who comes in contact with the contaminated environmental source.Germs can enter the body through the:
mouthrespiratory tracteyesgenitalsbroken skin.which structure is not found in both males and females?
Answer:
Vestibular gland
I hope this helps
How would the decimal point move to solve the equation 124 ÷ 10 to the power of 1?
what is the specific function of the structure labeled f?
Answer:
The muscle spindle indicated by F functions as a proprioceptor that is responsive to changes in the length of the surrounding muscle.
Explanation:
The specific function of the structure labeled f is proprioceptor that is responsive to changes in the length of the surrounding muscle.
What is the function of the muscle spindle?The muscle spindle is activated whenever the weight of the body, tending to bend the knees, stretches the muscles. Stimuli are sent to the spinal cord and through the motor nerve and the muscles contract to counteract the action of gravity.
The Muscle spindle is a proprioceptive sensory receptor spindle composed of muscle bundle fibers. Its main function is to signal changes in the length of the muscle on which it is located. Muscle Spindles are structures responsible for mechanical myo-integrity and regulation of muscle contraction/distension.
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Which mechanism allows lipid-soluble substances to move through the membranes of endothelial cells of capillaries
Answer:
Diffusion.
Explanation:
The mechanism that allows lipid-soluble substances to move through the membranes of endothelial cells of capillaries is simple diffusion.
Simple diffusion is a passive transport mechanism that allows lipid-soluble substances to move across the membranes of endothelial cells in capillaries. This process occurs down a concentration gradient, from an area of higher concentration to an area of lower concentration, without the need for energy expenditure.
The membranes of endothelial cells, which make up the walls of capillaries, are composed of a lipid bilayer. Lipid-soluble substances, such as oxygen, carbon dioxide, steroid hormones, and certain lipid-soluble drugs, can readily diffuse through this lipid bilayer due to their ability to dissolve in and pass through the hydrophobic interior of the membrane.
Unlike lipid-soluble substances, water-soluble substances, such as ions and polar molecules, are unable to passively diffuse through the lipid bilayer. Instead, they rely on specific transport mechanisms such as facilitated diffusion or active transport to cross the endothelial cell membrane.
In the context of capillaries, simple diffusion allows lipid-soluble substances to move from the bloodstream through the endothelial cell membranes and into surrounding tissues or vice versa. This process plays a crucial role in the exchange of gases, nutrients, and waste products between the bloodstream and the tissues.
It is important to note that while simple diffusion allows for the passage of lipid-soluble substances, the movement of these substances can also be influenced by factors such as concentration gradients, molecular size, solubility, and the presence of transport proteins. However, the primary mechanism by which lipid-soluble substances traverse the endothelial cell membranes of capillaries is through simple diffusion.
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How does carbon atom work on plants
Answer: Carbon moves from the atmosphere to plants. In the atmosphere, carbon is attached to oxygen in a gas called carbon dioxide (CO2). Through the process of photosynthesis, carbon dioxide is pulled from the air to produce food made from carbon for plant growth.This energy makes carbon molecules an excellent source of fuel for all living things. During photosynthesis, plants absorb carbon dioxide and sunlight to create fuel glucose and other sugars for building plant structures. This process forms the foundation of the fast (biological) carbon cycle.
Explanation: (credits to the internet) Hope this helped! <3
Which to provide evaluation of force, posture, and duration for the neck trunk and upper arms coupled with muscle function and physical lose on the body
Answer:
Strength, reflexes, and eye-hand coordination tend to decrease with a(n)
write the main roles of water
Answer:
Keeps people's health in order by carrying nutrients and oxygen to cells, Protects humans organs and tissues and Helps to regulate temperature and help the body in many ways. Also, up to 60% of the human body is water.
Hope that helps. x
how how does absorption of materials play a role in diffusion
The combined processes of absorption and diffusion are very necessary in the process of digestion.
The combined processes of absorption and diffusion are very necessary in the process of digestion especially in the intestines. The process by which nutrients enter the blood from the intestines is diffusion.
Diffusion occurs when the nutrients must have been absorbed into the blood from the intestines.
Hence, the combined processes ofabsorption and
diffusion are very necessary in the process of digestion.Learn more about digestion: https://brainly.com/question/1283194
Gene regulation is the basis for cellular differentiation and morphogenesis.
True
Or
False
Answer:
True
Explanation:
Organisms that live in a homogenous abiotic environment and cooperate to avoid being eaten would likely show a(n) __________ pattern of dispersion.
Answer:
clumped
Explanation:
which mutations are beneficial? which might not make a difference? which ones are most harmful?
Answer:
Mutations are random Mutations can be beneficial, neutral, or harmful for the organism, but mutations do not “try” to supply what the organism “needs.”
Explanation:
thylacosmilus is a marsupial and smilodon is a mammal
Answer:
whats the question?
Bob has brown hair and Sally has blonde hair. If brown hair is dominant and blonde hair is recessive, is it possible for Bob and Sally to have a blonde-haired child? Use the GENOTYPE of each parent to EXPLAIN your answer.
Answer:
Yes, it is possible.
Explanation:
Bob could either be h.o.m.ozygous (BB) for brown hair or h.e.terozygous (Bb) for brown hair. If Bob is h.e.t.erozygous for brown hair, this means he has a blonde hair allele. For a child to be blonde, the child needs one blonde allele from each parent and this is possible if Bob has a blonde hair allele. However, it is not possible if Bob is h.o.m.ozygous for brown hair.
In the image, there is a punnet square showing the possible genotypes of the children if Bob is h.e.t.erozygous for brown hair.
what part does chlorophyll play in photosynthesis?
Answer:
Explanation:
Chlorophyll's job in a plant is to absorb light—usually sunlight. The energy absorbed from light is transferred to two kinds of energy-storing molecules. Through photosynthesis, the plant uses the stored energy to convert carbon dioxide (absorbed from the air) and water into glucose, a type of sugar
1
Which of the following is BENEFIT of using natural fertilizer?
O its cost effective (cheap)
O you know exactly what nutrients/minerals are in it
it adds to the soil and makes it better long term
O it could lead to e. coli outbreaks
Which nitrogenous base is NOT found in RNA?
1 Adenine
2 Cytosine
3 Guanine
4 Thymine
5 Uracil
Uracil is a nitrogenous base found in all RNA but not present in DNA. There are multiple unusual modified bases found in tRNAs not found in DNA as well: Dihydrouridine, Pseudouridine, 1-methyl adenosine, N2,N2-dimethylguanosine, inosine, and 1-methyl-inosine. There are other nitrogenous bases that are metabolic intermediates that are not found in nucleic acids such as inosine (also in tarna), hypoxanthine, xanthine, dihydroorotate, orotate, and the purine break down product uric acid.
love ur pfp btw!
4
1
Which of the following lines does not pass
through the north and south poles?
A prime meridian
B equator
C 90-degrees W longitude
D International Date Line
The Equator line does not pass through the north and south poles. This line divides the Earth's planet into two hemispheres.
The Equator can be defined as an invisible line located at the center of the Earth (0 degrees latitude).
This invisible line (Equator) divides the Earth into two hemispheres: the northern hemisphere and the southern hemisphere.
The Equator is a circle of latitude, and the distance of this imaginary line is approximately 40,000 km in circumference.
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