Julia spent $50 on a book. The cost of the book was $20 less than twice what she spent on a backpack. How much did the backpack cost?
Solution 1
Answer:
it is given that the cost of the book was $20 less than twice what she spent on a backpack, this implies that:
Cost of book = (2*cost of backpack)-20--------------> [1]
Since, she spent $50 on the book, thus cost of the book =$50
If we substitute this in [1]
50 =( 2*cost of backpack)-20
Rearranging the terms,
50 + 20 = 2*cost of backpack
=> 70 = 2*cost of backpack
=> 70/2 = cost of backpack
=> 35 = cost of backpack
- Thus, the cost of the backpack was $35.
Solution 2
a=backpack
b=50
b=2a-20
50=2a-20
2a=75
a=37.5
it cost $37.5
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Patients who have experienced a severe, irreversible brain injury with a known etiology should be evaluated for brain death.
What are the main sign and symptoms of brain death?
Coma, the absence of brain stem reflexes, and apnea are the three key signs of brain death.
An assessment for brain death should be considered when a patient has suffered a serious, irreversible brain injury with a recognized etiology.
A patient who has been correctly deemed brain-dead is both legally and medically dead.
The apnea test is typically the last step in determining brain death. It is carried out after determining that a coma is irreversible, unresponsive, and that brain stem reflexes are absent.
Therefore, The completes and persistent absence of Brain stem reflexes, and apnea is used to determine brain death.
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In a boy, the mark of sexual maturation that is most comparable to menarche for a girl is the increment of the penis size, both in length and width, and the enlargement of both the scrotum and testes. Â
Further Explanation:
Aside the above mentioned, a boy also begin to have broad chest, and also he becomes more muscular which makes him to be capable to do more physical activities than he could do when he was more younger.
He also experiences rapid hair growth all over his body, more specifically, on his face, chests, legs and around his penis area. He also experience wet dreams whenever he is asleep, thereby ejaculating which connotes the release of some liquid substances called sperm.
For a boy to experience growth in his penis, testes, scrotum, and other physical changes, he must have hit his puberty years, which can be termed as sexual maturation.
Sexual maturation can be referred to stages of pubertal maturity and development that occur in the life of males and females; and are usually characterized by inevitable physical alteration. Recently sexual maturation has been experienced in the life of males and females earlier than it used to occur some decades ago, and this is as a result of improved nutrition, adequate living conditions, and overall human health.
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- Sexual Maturation brainly.com/question/6580654
KEYWORDS:
- Sexual Maturation
- Penis
- Testes
- Scrotum
- Hair
The phloem sap of vascular plants that moves through the phloem; transports nutrients through fungi by hyphae, as a result of turgor pressure. Hyphae are elongated tube-shaped structures that are like garden hoses. They also have inflexible cell walls that may be strengthened by punctured cross-walls which are called septa.
also, wafer will be able to run off faster on concrete and it would be able to with a large field, which would likely result in both flooding. both of these would likely speed up the water cycle and cause bad effects for humans.
Answer:
c
Explanation:
...
The best explanation for this hypothesis is that increased atmospheric carbon dioxide levels will stimulate plant growth through the process of photosynthesis, in which plants convert carbon dioxide and water into glucose and oxygen.
What is photosynthesis ?
Photosynthesis is the process by which plants, algae, and some bacteria convert light energy into chemical energy in the form of glucose or other sugars. This process occurs in the chloroplasts of plant cells and involves the conversion of carbon dioxide and water into glucose, using light energy from the sun as the driving force. Oxygen is also produced as a byproduct of photosynthesis.
Photosynthesis can be divided into two stages: the light-dependent reactions and the light-independent reactions. The light-dependent reactions involve the conversion of light energy into chemical energy in the form of ATP and NADPH. These reactions occur in the thylakoid membranes of the chloroplasts, where pigments such as chlorophyll absorb light energy. The light-independent reactions, also known as the Calvin cycle, involve the use of ATP and NADPH to convert carbon dioxide into glucose.
Photosynthesis is an essential process for all plants, as it provides them with the energy they need to grow and thrive. It is also an important process in the global carbon cycle, as it removes carbon dioxide from the atmosphere and converts it into organic matter.
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Answer : The correct answer is, Sublimation and Melting process.
Explanation :
- Solid state : In this state, the molecules are closely and tightly packed. There is no vacant space present in it and there is strong inter-molecular force of attraction. The atoms are not free to move in this state.
- Liquid state : In this state, the molecules are loosely packed and there is an intermediate vacant space present in it and there is less inter-molecular force of attraction. The atoms are free to move in this state.
- Gas state : In this state, the molecules are very loosely packed and there is a lot of vacant space present in it and there is very less inter-molecular force of attraction. The atoms are easily free to move in this state.
So, there are two processes in which changes of state of atoms that cannot move past one another become free to move which are sublimation and melting process.
Sublimation : It is a process in which a solid directly changes to gaseous phase.
Melting : It is process in which a solid changes into liquid phase by providing heat.
The processing of oil shale require large amount of water which is needed for the processing activities of oil shale. This is a big challenge to the mining of oil shale because most of oil shale deposits are found in semi arid regions where water is scarce.
Fugue is a term used in the music or we can say that it is a type or form of music in which one or two themes are repeated and it begins with a simple tune (we can also say this is the section known as exposition) and after that it is repeated or the composer alternates between episodes and the subject presentation.
The name "multiple sclerosis" arose because of the multiple scars (scleroses) that form on the myelin sheaths as they are gradually destroyed by the disease.