Biology High School

A lending library has a fixed charge for the first three days and an additional charge for each day thereafter. Saritha paid ₹27 for a book kept for seven days, while Susy paid ₹21 for the book she kept for five days. Find the fixed charge and the charge for each extra day.​​

Answers

Answer 1

Answer:

See the attachment.

Hope u understand

A Lending Library Has A Fixed Charge For The First Three Days And An Additional Charge For Each Day Thereafter.
Answer 2

In the given question, 5₹ is the fixed charge and 3₹ is the charge for each extra day.

A fixed charge is a fee or cost that remains constant and does not vary with changes in usage or consumption.

Let the fixed charge for the first three days be x and the charge for each extra day be y.

From the given information, we can set up two equations:

For Saritha: [tex]\rm 3x + 4y = 27 -----(equation 1)[/tex]  

For Susy: [tex]\rm 3x + 2y = 21 -----(equation 2)[/tex]

We can solve for x and y by using elimination or substitution:

Using elimination, we can multiply the second equation by 2 and subtract it from the first equation:

[tex]\rm 3x + 4y = 27[/tex]

[tex]\rm - (6x + 4y = 42)[/tex]

Solving above equations, we get:

[tex]\rm -3x = -15[/tex]

[tex]\rm x = 5[/tex]

Substituting x = 5 into one of the equations, we can solve for y:

[tex]\rm 3(5) + 4y = 27[/tex]

[tex]\rm 15 + 4y = 27[/tex]

[tex]\rm 4y = 12[/tex]

[tex]\rm y = 3[/tex]

Therefore, the fixed charge is ₹5 and the charge for each extra day is ₹3.

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Related Questions

Which process is the one that starts all things off by generating glucose from sunlight? photosynthesis cellular respiration aerobic respiration​

Answers

Answer:

Photosynthesis is the process by which plants, some bacteria, and some protistans use the energy from sunlight to produce sugar, which cellular respiration converts into ATP, the "fuel" used by all living things.

5. A typical incandescent light bulb produces

A.an absorption spectrum
B.a discontinuous spectrum
C.a continuous spectrum
D.an emission spectrum

Answers

The answer is C. A continuous spectrum
I believe the correct answer would be C

3. What is the relationship of the sea and land breeze to the temperature of an area?
please ung matinong answer po need ko po kase​

Answers

Answer:

Sea breezes occur during hot, summer days because of the unequal heating rates of land and water. During the day, the land surface heats up faster than the water surface. Therefore, the air above the land is warmer than the air above the ocean.

Explanation:

HOPE IT HELPS (≧▽≦)

Part B: What is the name of the process that has occurred, and how would it likely occur in this population? (2 points)

Answers

Answer:

Explanation:

Please it seems your question is incomplete

Inhalation and exhalation move air into and out of the lungs. What happens when you inhale and exhale

Answers

When you inhale (breathe in), air enters your lungs and oxygen from the air moves from your lungs to your blood. At the same time, carbon dioxide, a waste gas, moves from your blood to the lungs and is exhaled (breathe out). Hope this helps

Recently discovered genetic evidence shows that multicellular land plants such as corn and wheat, are all of one lineage – they all arose from a single type of algae. Fossil evidence suggests that other types of algae did not have the needed complexity to move into terrestrial ecosystems. Explain at least 3 adaptations that algae would need to be able to survive on land.

Answers

Answer:

1) they would need a host or vessel to stay on and feed of of their body

2) they would need some for of reproduction in the host ( mitosis whatever the algae my use )

3) they would need to wisely choose there hosts and of what they feed on so there host doesn’t die quickly

I don’t know if this is what your looking for but these are 3 things that algae would need to live

Immediately following the arrival of the stimulus at the axon terminal there is a short period called the ________ period during which no muscle tension is observed while the neurotransmitter is being released by exocytosis, diffusing across the synaptic cleft, and binding to its receptor to activate the muscle cell. relaxation latent contraction refractory

Answers

Answer:

Immediately following the arrival of the stimulus at the axon terminal there is a short period called the latent period.

Explanation:

When a stimulus reaches the terminal of an axon, a period known as the latent period begins. This period has a short duration and during it it is possible to observe the blockage of new stimuli in the nerve fiber. Thus, the new stimuli fail to trigger an impulse and no muscle tension to be observed.

While the latent period is not finished, the neurotransmitter is released through the action of exocytosis that moves until it gets access to the receptor capable of activating the muscle cell.

Factors that could affect the current oxygen and carbon dioxide levels?

Answers

Explanation:

There are many factors, both natural and man-made, that affect the levels of carbon dioxide and oxygen in the atmosphere. Some of them are:

Burning of fossil fuels increases the level of carbon dioxide.

Cleaning agricultural land increases the level of carbon dioxide.

The availability of nutrients in plants affects the synthesis of oxygen.

The intensity of the sunlight can increase or decrease the synthesis of oxygen.

Deforestation and industrial expansion greatly affect carbon dioxide and oxygen levels.

The increase in consumer products due to population explosion and advances in health care can also fluctuate carbon dioxide and oxygen levels.

An increase in oxygen levels is thought to promote healthy living in the environment, whereas a decrease in oxygen levels can lead to a decrease in atmospheric layers (thinning of the ozone layer). This reduction allows more sunlight to reach the Earth's surface. Sunlight gets trapped inside the Earth and raises the temperature of the planet. It is also known as global warming.

A reduction in carbon dioxide to a certain level is good for the environment, but lower than normal levels can affect oxygen synthesis as plants absorb carbon dioxide and use it to synthesize oxygen during photosynthesis. Since carbon dioxide is a greenhouse gas, an increase in its level will cause global warming.

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A species in imminent danger of extinction throughout all or a significant portion of its range is said to be:

Answers

Answer: Endangered

The question above is the definition of "endangered": A species that is in imminent danger of extinction throughout all or a significant portion of its range.

which one produces proteins?​

Answers

Ribosomes are protein builders. So i think that’s the answer

Answer:

Ribosomes are complex molecular machines in living cells that produce proteins from amino acids in a process known as protein synthesis or transformation. The process of protein synthesis is a primary function performed by all living cells.

So I think the answer is ribosome

Explanation:

520 644 3017
password 12345
iam a teacher
time 2 15​

Answers

Answer:

What is this?????????????????????????

urine is made of _________​

Answers

Answer:

Answer is A

Explanation:

Urea consists of carbon, nitrogen and oxygen. You can find it in urine, sweat, blood and milk in mammals. In its most concentrated form, it is urine. Urea is a crystalline compound, and the nitrogen content is always at least 46 percent when dry.

According to a recent survey, the tiger is the world's favorite animal. Besides their natural beauty, what else about tigers amazes us? Tigers are some of the most powerful hunters in the animal world. They are the largest animal in the cat family. They can weigh more than 600 pounds and measure as long as 11 feet. They are not only strong but also light-footed and agile. They can easily jump long distances when hunting prey. Tigers can even jump as high as 16 feet in the air! They have extremely powerful jaws. A tiger is strong enough to kill a lion, a bear, or even an elephant.

Answers

Hi there, what's the question ?

A group of environmental activists in West Virginia wants to save a large forest. Which act will help them in this activity?

Answers

Answer:

The correct answer is - Eastern Wilderness Areas Act.

Explanation:

The Eastern Wilderness Act is an act to be which is thought one of America's greatest conservation achievements. This act heled in creating our National Wilderness Preservation System such as west Virginia forests from over ogging and destroying the forests. This act is mainly introduced to eastern region of the country in 1975 january. It is allowed in 13 states of eastern united states.

Thus, the correct answer is - Eastern Wilderness Areas Act.

What do all organisms need? Select three options.

Answers

Answer:

what are the options?

Explanation:

Answer:

food water a place to live

Explanation:

food, water, and protection. A plant is left in a protected greenhouse that pumps in fresh carbon dioxide. The plant also has access to sunlight and can make its own sugar. However, the plant is beginning to die.

Which is NOT involved at the beginning
of a nerve impulse?
A. reaching the threshold
B. a strong stimulus
C. sodium leaving the cells
D. negative charge inside the cell


Links and random responses will be reported

Answers

Answer:

Explanation:

it would be c////////////////////

In 40 words or fewer, why do you think a 0.1% difference in DNA can
be useful to society?

(The answer is this ⬇️)


The 0.1% difference in DNA
can be used to identify
someone who has
committed a crime or free
someone who hasn't, to determine someone's family
heritage, and to help give a
person more precise
medical treatments.

To anyone who needs it

Answers

Answer:

The 0.1% difference in DNA

can be used to identify

someone who has

committed a crime or free

someone who hasn't, to determine someone's family

heritage, and to help give a

person more precise

medical treatments.

Explanation:

Easy points thxx

What do scientists study to see the genetic changes that occur through generations?
A.Overall appearance
B.Phenotype
C.Genotype
D.The species overall demeanor

Answers

I’m pretty sure it’s Genotype
I think the answer is genotype!

*see image attached* could anyone answer this biology question?

Answers

Answer:

c. 360ml

Explanation:

first find the ratio.

90/25=3.6

100*3.6=360ml

which is used to make many copies of DNA?

Answers

Answer:

Polymerase chain reaction (PCR) is used to make many copies of DNA .

hope it is helpful to you.

Answer:

Polymerase chain reaction (PCR) is used to make many copies of DNA .

hope it is helpful to you.

Use the drop-down menus to complete each sentence. occurs when the immune system attacks the body. is often caused by obesity resulting from overeating and poor nutrition. is caused by DNA changes in a single gene and affects the nerve cells in the brain. is caused by uncontrolled cell growth. occurs when the pancreas does not produce enough insulin, or the body does not respond properly to it.

Answers

Answer:

The correct answer is -

1. Lupus

2 Cardiovascular disease

3. Huntingtons disease

4. Cancer

5. Diabetes

Explanation:

Lupus is one of the autoimmune diseases that takes place when our bodywork against ourself and harm cells and skin. When an individual has poor or bad nutrition and generally experiences obesity this cardiovascular disease occurs.

Huntington's disease takes place due to changes in DNA in the brain and affects neurons of the brain. Cancer is uncontrollable cell growth that can be lethal. If an individual is not able to produce enough amount of insulin, that lowers the glucose from the blood, will lead to cell diabetes condition

What is the role of reverse transcriptase in DNA technologies?
A. To unzip DNA strands
B. To find mRNA
C. To produce proteins
O D. To make cDNA

Answers

Answer:

D...........................................................................

Explanation:

Reverse transcriptase may be a DNA polymerase enzyme that transcribes single-stranded RNA into DNA.

What is reverse transcriptase?

This enzyme is in a position to synthesize a double-stranded DNA into a single-strand DNA once the RNA is transcribed in 1st step.

Found in retroviruses, like the human immunodeficiency virus (HIV).

Reverse transcriptase is used to form a cDNA copy of the mRNA.

The cDNA sample is then amplified by PCR. This yields multiple copies of cDNA without introns

Thus, we can conclude that the correct option is D.

To make cDNA is the role of reverse transcriptase in DNA technologies.

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define the photosynthesis?​

Answers

Answer:

photosynthesis is the process in which green plants use sunlight to create foods from carbon dioxide and water, for themselves. Photosynthesis in plants usually involves the green pigment, called chlorophyll, and generates oxygen as a byproduct.

Explanation:

Photosynthesis is when green plants use sunlight to create food from carbon dioxide and water.

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One of the major factors influencing the enrichment of reservoirs is,

Sodium

Chlorine

Nitrogen

Hydrogen

Answers

No it’s nitrogen. As it’s also a limiting factor.

A population of fruit faces food shortage when the fruit trees they depend on for food begin to die from disease. What type of growth pattern will bats exhibit

Answers

Answer:

The correct answer is - logistic growth.

Explanation:

The growth of bats is only limited by the fruit trees they feed on. It is an example of the concept of carrying capacity of an environment, so this is best modelled by logistic growth.

The Types 1-3 of survival growth are related to age, while exponential growth does not have any limits related to environmental capacity.

The correct answer is - logistic growth.

The process of chewing, smashing, and grinding food in the mouth is called

peristalsis

mechanical digestion

absorption

chemical digestion

Answers

The process of chewing, smashing, and grinding food in the mouth is called mechanical digestion (option B).

What is digestion?

Digestion is the process, in the gastrointestinal tract, by which food is broken down into simpler substances that can be utilized by the body.

Digestion can occur in the following ways;

MechanicallyChemically

Mechanical digestion involves the breakdown of food molecules by physical means such as grinding, chewing, smashing etc.

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ਵਚਨ ਬਦਲੋ । ੳ) ਮੋਰ ੲ) ਉਠ​

Answers

Answer:

hyugbdih

Explanation:

yes

The ______ regulates the amount of glucose circulating in the blood by either synthesizing glycogen or breaking down glycogen.

Answers

Answer:

Glucagon

Explanation:

It is a peptide hormone secreted by the pancreas, raises blood glucose levels

Glucagon stimulates glycolysis, the breakdown of glycogen and the export of glucose into the circulation

how are proteins and nucleic acids related

Answers

Answer: Deoxyribonucleic acid (DNA) encodes the information the cell needs to make proteins. A related type of nucleic acid, called ribonucleic acid (RNA), comes in different molecular forms that participate in protein synthesis

Explanation:

Tom is having difficulty dorsiflexing and inverting his right foot. Which muscle is most likely involved in this problem

Answers

Answer:

It should be the tibialis anterior

Explanation:

I hope this helps!

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