Answer:
-56
Explanation:
ax^2 + bx + c = 0 is the discriminant of the quadratic equation
3 - 4x= -6x^2
to
-6x^2 + 4x -3 = 0
We know that:
a = -6
b = 4
c = -3
Substitute in the formula of discriminant (b^2 - 4ac):
= 4^2 - 4 * (-6) * (-3)
= 16 - 4 * 18
= -56
J.J. Thomson's Plum Pudding Model is an example of _____. A. a picture B. an analogy C. a prototype D. a mathematical model
Answer:
it is D
Explanation:
How is the light wave that travels through a prism refracted?
The light is absorbed by the glass in the prism.
The light speeds up as it leaves the prism and enters the air.
The light reflects off the surface of the prism.
The light slows down as it moves from the air into the glass.
Answer:
The light slows down as it moves from the air to the glass
Explanation:
The different media (particles of matter) that light travels through determines the speed and appearance of the light to the human eye...
So when White Light is shone through the prism, the speed slows down and separates the different wavelengths of light, giving you the different colours
HOPE THIS HELPS!!
The light wave that travels through a prism refracted is The light slows down as it moves from the air to the glass
Why are light wave that travels through a prism refracted?The different media i.e.particles of matter that light travels via measured the speed and appearance of the light to the human eye. So at the time when the white light is shown via the prism so the speed should be slows down and distinct the various wavelength of light.
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Describe how gene therapy can be a social issue and give rise to moral, ethical, and legal debates. Justify your response in two or more complete sentences.
Answer:This type of gene therapy cannot be passed to a person's children. Gene therapy could be targeted to egg and sperm cells (germ cells), however, which would allow the inserted gene to be passed to future generations. This approach is known as germline gene therapy. The idea of germline gene therapy is controversial.
Explanation: I hoped this helped, im only in 5th grade
Final answer:
Gene therapy poses ethical, social, and legal issues regarding access, equity, regulation, and the scope of genetic modification, with debates surrounding the correction of traits, enhancement, and manipulation of future generations. High-profile cases have highlighted the risks and necessitated strict regulation.
Explanation:
Gene therapy can be a social issue as it brings forth a wide array of moral, ethical, and legal debates. Issues arise over who should have access to gene therapy and whether it could create new forms of social inequality due to its cost. Furthermore, concerns exist on who will regulate and police the use of gene therapies, especially to prevent exploitation and misuse.
Another significant debate contrasts the ethical considerations of somatic cell gene therapy, which affects only the individual, versus germ-line gene therapy, which has hereditary implications, potentially affecting future generations. Questions such as which genetic traits are worthy of being corrected, if gene therapy should be used for cosmetic or enhancement purposes, or whether we should genetically manipulate the unborn for desirable traits, invoke deep ethical dilemmas about the limits of therapy.
The case of Jesse Gelsinger, among others, illustrates the need for stringent regulation and ethical consideration. It led to increased scrutiny and temporary halts in clinical trials, forcing a balance between scientific progress and human welfare. There is considerable federal and local regulation of the development of gene therapies, underscoring the potential risks and the need for rigorous evaluation of new therapies.
2 Points
What type of organism is a primary consumer?
O A. Herbivore
B. Carnivore
C. Omnivore
D. Detrivore
Answer: Herbivore
Explanation:
Answer:
Herbivore and also omnivore
Explanation:
eat plants (the first type of energy); carnivores are secondary, while detrivore is a decomposer
omnivores can work because they eat both plants and other animals
What is the difference between a conductor and an insulator?
Question 2 options:
A conductor can get heat transfer through convection and conduction and an insulator can only get heat transfer from radiation
A conductor lets heat pass through it easily, and an insulator does not allow heat to pass through it easily
A conductor can only get heat transfer through conduction, and an insulator can only get heat transfer through radiation
A conductor is unaffected by heat, and an insulator is extremely affected by heat
A conductor allows heat and electrical charge to pass through easily, facilitating heat transfer through conduction and convection; an insulator does not allow heat or charge to move through it easily, limiting heat transfer mainly to radiation.
Explanation:The difference between a conductor and an insulator lies in their ability to transfer heat and electrical charge. A conductor, such as metals like copper, aluminum, and silver, allows heat and electrical charge to pass through it easily because of the movement of electrons within the material. Conductors can transfer heat through physical contact (conduction) as well as by the movement of the material itself (convection). On the other hand, an insulator like wood, plastic, or rubber does not allow heat or electrical charge to move through it easily, primarily restricting heat transfer to radiation, which does not require direct contact.
The type of intelligence that involves having the ability to perceive, understand, and regulate emotion is known as __________ intelligence.
A.
cognitive
B.
emotional
C.
creative
D.
general
Answer:
B.) Emotional
Explanation:
Right on edg. 2020
Mallory notices that after orgasm, she feels exceedingly relaxed. This is because she has had a surge of _____.
Answer:
Serotonin
Explanation:
The genotype of an individual is expressed as follows: (a) blue eyes (b) b (c) tall (d) aa X bb
Answer:
a
Explanation:
Messages sent by the brain to the endocrine system pass _____.
A. from neuroendocrine cells to neurons for translation
B. from neurotransmitters to neuroendocrine cells for translation
C. from hormones to glands to endocrine target cells
D. from endocrine target cells to hormones to neurons
I thinks the answer is c,from hormones to glands to endocrine target cells
The brain communicates with the endocrine system via neuroendocrine cells to neurons. Neuroendocrine cells receive messages from nerve cells and release hormones into the bloodstream.
Explanation:Messages sent by the brain to the endocrine system pass from neuroendocrine cells to neurons for translation (Option A). In the body, neuroendocrine cells are special cells that receive neuronal input (neurotransmitters released by nerve cells) and, in response to this input, release message molecules (hormones) into the bloodstream. This allows for communication from the nervous system to the endocrine system.
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The graph gives the number of varicella (chicken pox) cases between 1972 and 2011. Varicella is an Infectious disease caused by a virus. The
disease causes rash, itching, and fever in patients. The varicella vaccine was introduced in 1995. What can you conclude about the vaccine?
Vancella (Chickenpox) Cases
1972-2011
250 000 +
200 000+
The vancella vaccine was
introduced in 1995
150.000
Cases of Varicella
100 000 +
-
cases of vancella
50 000 +
1967)
13
[0366
0961
1998]
1991
L000
2001]
20021
2003
20041
20051
2007
2001
20097
20107
Year
A.
It was successful in eradicating chicken pox from the United States.
B.
It had no effect on the rate of chicken pox cases in the United States
C.
It caused a 10% decrease in the number of chicken pox cases in the United States from 1995 to 2011
D.
It initially caused a large drop in Chicken pox cases in the United States and the rate continues to decrease
Answer:
The answer to the question is
D. It initially caused a large drop in chicken pox cases in the united states and the rate continues to decrease.
Explanation:
The varicella vaccine introduced in 1995 led to a significant reduction in chickenpox cases in the United States, demonstrating the effectiveness of vaccines in controlling and managing infectious diseases.
Explanation:Based on the information and the graph depicting the number of varicella (chicken pox) cases between 1972 to 2011, it can be concluded that the introduction of the varicella vaccine in 1995 had a significant impact on the reduction of chicken pox cases in the United States. Following the vaccine's introduction, there was a notable decline in virus spread. As seen with many other vaccines such as smallpox, measles, mumps, and polio, the targeted immunization measures tend to significantly reduce the prevalence of the associated diseases.
Once a person is vaccinated, the body develops immunity against the virus, significantly reducing the chances of infection. It's also important to note that, similar to diseases like polio, the successful reduction of chickenpox cases through vaccination showcases the importance and effectiveness of vaccines in controlling and managing infectious diseases on a broad scale.
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Danielle is arguing that genetically modified (GM) food crops have many drawbacks, and that the use and development of these crops should be curtailed. Which two of the following statements provide the STRONGEST evidence in support of Danielle's argument? Select two answers.
A. Many consumers are demanding labels that identify GM foods.
B. Herbicide-tolerant GM plants may lead to overuse of herbicides.
C. Pest-resistant GM plants may kill beneficial insects as well as pests.
D. Genetic technology is decreasing the number and variety of plants that are raised for food.
Answer:
I think B and C.
Explanation:
Answer:
Both B and C.
Explanation:
Which factor would scientists most likely evaluate to determine the health of a marine ecosystem?
Frequency of predation
Levels of pollution
Particulates in the air
Reproductive success of consumers
Answer: levels of pollution
It’s right
PLS ANSWER DUE LATER!!
okay, i will answer due later
What molecules are made during transcription
Answer:
During transcription, only one strand of DNA is usually copied. This is called the template strand, and the RNA molecules produced are single-stranded messenger RNAs (mRNAs). The DNA strand that would correspond to the mRNA is called the coding or sense strand
Explanation:
The RNA molecules are produced during the process of transcription.
TranscriptionIt is the first step in decoding the genetic information of the cell.
It is the process by which the information in a DNA strand is copied into a novel molecule of mRNA.
At the time of transcription, the enzymes known as RNA polymerases construct the molecules of RNA, which are complementary to a part of one strand of the double helix of DNA.
The prime enzyme, which takes part in the process of transcription is RNA polymerase.
Thus, the molecules of RNA are produced during transcription.
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Which of these is not currently a source of usable energy?
A
The sun
B
The moon
Heat from within the earth's crust
D
Running water
Answer:D
Explanation:
Because we can use the sun and the moon for light.
Answer:
B The moon
Explanation:
There are different source of environmental renewable energy sources which are usable for ourselves.
• The lunar energy has also great scopes in the near future as a renewable energy source.
stay safe and have a good day
∵∴∵∴∵∴∵∴∵
⊕ΘΞΠΤ⊕
∵∴∵∴∵∴∵∴∵
(WILL MARK BRAINLIEST and 25pts) Which layer of the sun contains jets of rapidly moving gas called spicules?
a. Core
b. Corona
c. Photosphere
d. Chromosphere
Answer: D Chromosphere
Explanation:
The Chromosphere is a pink color, Second of the three main layers and is roughly about 3,000-5,000 KM deep
Answer:
chromosphere
Explanation:
WILL GIVE BRAINLIEST AND PLZ HURRY
5) Why is mimicry a helpful adaptation?
6) Why might a predator stay away from an animal with warning coloration?
TYPE HERE
TYPE HERE
Answer:
5) Mimicry is a helpful adaptation because a non-dangerous organism could mimic a more lethal organism so it won't get hurt or hunted.
6) A predator might stay away from an animal with warning coloration because the coloration might mimic a dangerous animal that could potentially hurt the predator. The coloration would warn the predator that the animal is dangerous and not to be messed with.
Which best describes genetic mutations?
A:Some inherited genetic mutations can be good for the offspring.
B:Different genetic mutations cause few forms of cancer.
C:Somatic mutations can be inherited from parents or acquired during life.
D:Genetic mutations that cause diseases are always passed on to offspring.
A scientist is using a microscope to study the image below. Which kind of plant could the scientist be observing?
1. Liverwort
2. Club moss
3. Moss
4. Hornwort
Answer:
club moss
Explanation:
trust me i stole it
Question 6
Which kingdoms have some organisms that can make their own food (autotrophic)?
The kingdoms that contain autotrophic organisms are Eubacteria, Plantae, Fungi, Protista, Archaebacteria.
This is the case because These 5 kingdoms all have organisms that make their own food rather than eating other organisms for food like heterotrophs do. This is why kingdom animalia doesn't have any autotrophs because they can only get energy from other organisms.
There are three main kingdoms that have organisms that can make their own food excluding the kingdom of protista and fungi. These kingdoms include:Kingdom Plantae, kingdom Eubacteria and Kingdom Archaebacteria,.
Kingdom Plantae is the most familiar and well-known of the three kingdoms. It includes plants, which are well known for their ability to use energy from the sunlight to produce their own food through a process which is called photosynthesis.
The other two kingdoms which are named asEubacteria and Archaebacteria, are groups of bacteria. Some bacteria are able to perform photosynthesis or chemosynthesis, which is a process that allows them to convert inorganic molecules into energy-rich organic compounds without the need for sunlight.
Eubacteria and Archeobacteria:
Individuals of these kingdoms are single-celled, may or may not move, have a cell wall, have no chloroplasts or other organelles, and have no nucleus. Monera are usually very tiny, although one type, namely the blue-green bacteria, which look like algae.
Protista:
Protists are single-celled organisms and usually move by cilia, flagella, or by amoeboid mechanisms. The have no cell wall, although some forms possess a cell wall.
Fungi
Fungi are multicellular,with a cell wall, organelles including a nucleus, but have no chloroplasts. They have no mechanisms for locomotion. Fungi can range in size from microscopic to very large ( such as mushrooms). Nutrients are acquired by absorption.
Plantae
Plants are multicellular and most of them don't move, although gametes of some plants move using cilia or flagella. Organelles which include nucleus, chloroplasts are present, even cell walls are present. Nutrients are acquired by photosynthesis .
Animalia
Animals acquire nutrients by ingestion.
Thus, organisms belonging to Kingdom Plantae, kingdom Eubacteria and Kingdom Archaebacteria are organisms which can make their own food.
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Examine the molecular models of two different substances below. In the
molecule on the left, the electrons are not shared equally. In the molecule on
the right, the electrons are shared equally.
Water molecule, H20 Oxygen molecule, O2
What is the result of mixing the two substances shown here together?
A. They are not attracted to each other, because water contains an
ionic bond.
O
B. They are attracted to each other, because they are both polar.
O
C. They are attracted to each other, because they are both nonpolar.
O
D. They are not attracted to each other, because one is polar and one
is nonpolar.
Answer:
D.
Explanation:
They are not attracted to each other because one is polar and one is nonpolar
The result of mixing the two substances shown here together is D. They are not attracted to each other, because one is polar and one is nonpolar. Thus, option "D" is correct.
What are polar and non-polar substances?
The polar group is hydrophilic in nature (water-loving) and the non-polar group is hydrophobic in nature (water-repelling).
The polar/non-polar nature of a substance is useful that it can dissolve the non-polar substances by the polar part and also can dissolve the polar substances by the non-polar part. It is commonly used in detergents and soaps.
Thus, option "D" is correct.
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Will mark Brainliest!!!! What is the difference between hemophilia, down syndrome, sickle cell anemia, and cystic fibrosis?
What might happen to the organisms in the food web below if the number of phytoplankton and vegetation drastically decreased? The small fish and wading birds would be affected. Only the small fish would be affected. The small fish, bivalves, and invertebrates would be affected. The entire food web would be affected.
Answer: The entire food web
Explanation: Because the small fish eat the plankton and the birds eat the fish, and other things eat the birds etc. etc., technically if the number of phytoplankton and vegetation dropped, it would cause everyone else to have a lack of food
Answer:The entire food web
Explanation: I took the test
The United States uses which source of energy to produce almost 40 percent of its electricity?
A.solar
B.water
C.biomass
D. wind
E.coal
The answer should be E. Coal
Which food chain is part of this food web?
A. Kelp – phytoplankton – plants
B, Kelp - sea urchin - sea otter - bald eagle
C. Bald eagle
rat - plants
D. Phytoplankton - zooplankton - rat - sea gulll
Answer:
B. Kelp - Sea Urchin - Sea Otter - Bald Eagle
Explanation:
Following the arrows shows what eats what. B is the only answer that follows the arrows, and it only ever goes up, never down as seen in C.
how might using water sometimes require changing its original state
Answer:
Explanation:
Lets say you are using the water to make noodles when you put the water on to boil the water evaporates and turns into a gas instead of a liquid (water vapor)
Which of these is an example of redevelopment?
A. Drawing an urban growth boundary around an area
O
B. Converting rural pastureland into a new shopping center
O
C. Converting an old shopping mall into a community college
D. Putting a parking garage on an unused lot inside a city
"The correct answer is C. Converting an old shopping mall into a community college. Option C is an example of redevelopment.
Redevelopment typically refers to the process of taking an existing property or area and transforming it for a new use, often to revitalize or improve the area. Here's the reasoning for each option:
A. Drawing an urban growth boundary around an area is an example of urban planning and land-use regulation, but it does not involve the transformation of existing structures or land use within the boundary. Therefore, it is not an example of redevelopment.
B. Converting rural pastureland into a new shopping center is an example of development, as it involves creating a new structure or use on previously undeveloped land. This is not redevelopment because the land was not previously developed for another purpose.
C. Converting an old shopping mall into a community college is a clear example of redevelopment. It involves taking an existing structure that was used for one purpose (retail) and repurposing it for a completely different use (education). This fits the definition of redevelopment as it revitalizes the property and gives it a new function.
D. Putting a parking garage on an unused lot inside a city is also an example of development rather than redevelopment. While it does involve constructing a new structure, the lot was previously unused, so there is no transformation from a previous use to a new use, which is a key aspect of redevelopment.
Therefore, option C is the correct choice as it best exemplifies the concept of redevelopment."
to any 8th graders or 7th graders that take technology, what are you currently learning in technology class?
this is what u usually learn in these grades for technology
identify the genotype for each numbered item .
Answer:
1- RRYy
2- Rryy
3- ry
4- wrinkled and yellow
Answer:
C,B,A,C
Explanation:
1pt A female produces egg cells continuously throughout her lifetime.
A. true
B. false