# Homework Help: Computers: Operating Systems

## Recent Homework Questions About Operating Systems

**Pre-Calculus**

Use Gaussian elimination to find the complete solution to the system of equations, or state that none exists. Show your work. 4x - y + 3z = 12 x + 4y + 6z = -32 5x + 3y + 9z = 20 Please help me..

**Pre-Calculus**

Solve the system by the substitution method. Show your work. 2y - x = 5 x2 + y2 - 25 = 0 I solved the problem but I got it wrong for some reason..can you solve it step by step?

**MATH**

Two cell phone companies have different rate plans. Runfast has monthly charges $25 plus $10 per gig of data. B A &D’s monthly charge is $18 plus 15 per gig of data. Your task is to determine under what circumstances each company has the better pricing. You will derive and ...

**U.S. History (Check!)**

1. True or false: The Watts Riot was a race riot in the Watts neighborhood. A: True 2. True or false: The Civil Rights Act of 1964 was the biggest civil rights law passed in the U.S. A: True 3. True or false: Malcolm X died of old age in 1983. A: False 4. True or false: Martin...

**U.S. History (Check)(REED)**

1. True or false: The Watts Riot was a race riot in the Watts neighborhood. A: True 2. True or false: The Civil Rights Act of 1964 was the biggest civil rights law passed in the U.S. A: True 3. True or false: Malcolm X died of old age in 1983. A: False 4. True or false: Martin...

**Math - system of eqns**

Consider the system of equations: x1 + x2 + x3 = 6, −x1 − 2x2 + 3x3 = 1, 3x1 − 4x2 + 4x3 = 5. (a) Write down the augmented matrix for this system (b) Use elementary row operations to reduced the augmented matrix to reduced row-ecehelon form FOR A: Ive got: 1 ...

**math plz help ;-;**

Determine the x-coordinate of the solution of the system of equations below. You may use any method: 2x-y=10 x+y=2 Determine the y-coordinate of the solution for the system of equations. You may use any method. 2x-y=10 x+y=2 Plz help i really don't understand these two Q ...

**chemistry**

Some physical properties of water are shown below: melting point 0.0°C boiling point 100.0°C specific heat solid 2.05 J/g·°C specfic heat liquid 4.184 J/g·°C specific heat gas 2.02 J/g·°C ΔH° fusion 6.02 kJ/mol ΔH° vaporization 40.7 kJ/mol 80.0 kJ of heat ...

**Math**

Lisa and Katie are playing a card game, and a total of 900 points has been scored. Lisa scored 400 more points than Katie. If you let l= l= the number of points that Lisa scored, and k= k= the number of points that Katie scored, then the problem can be represented by the system:

**math plz help ;-;**

1. Solve the system by any method: 2x-5y=-1 2x-y=1 How many solutions does the system of equations below have? Explain your answer. y=3/5x-1 y=6/10x+3 plz help me ;-; i don't understand how to do this, sorry ;-;

**Pre calculus**

olve the system of equations using matrices. Use Gaussian elimination with back-substitution. x + y + z = -5 x - y + 3z = -1 4x + y + z = -2 I need it explained to me, how do I do this?

**Algebra, please help**

I've been stuck for a while on this problem Which ordered pair represents the solution to the system of equations? { 5x+3y=7 { 3x-5y=-23

**math**

Elimination was used to solve a system of equations. One of the intermediate steps led to the equation 9x=27 . Which of the following systems could have led to this equation? 4x+3y=24 −5x−3y=3 7x−2y=15 x+y=6 9x+2y=21 −9x−2y=21 10x−y=15 x+y...

**physics**

a submarine fitted with a SONAR system operates at a frequency 50kHz. An enwmy submarine is now moving towards it with a speed of 450km/hr. Find the frequency of the sound received back at the SONAR from the enemy submarine. Velocity of sound in water is 1450m/s.

**U.S Histroy please help me**

one year ago 1. The states below were added to the Union during the decade following the War of 1812: Indiana (1816) Mississippi (1817) Illinois (1818) Alabama (1819) Maine (1820) Missouri (1821) Which statement best explains how the War of 1812 contributed to the growth of ...

**English**

1) What is the principal part of the underlined verb in the sentence? I have never beaten my grandfather at chess. A. past B. past participle C. present D. present participle "beaten" is b past participle 2) What is the principal part of the underlined verb in the sentence? So...

**simultaneous-equation help am despirate**

find the value of x,yandz in the system equation 2x+y-z=8 x^2-y^2+2z^2=14 3x^3+4y^3+z^3=195 step please thanks

**Physics**

Heat is added to a system, and the system does 35.0 J of work. If the internal energy increases by 17.0 J, how much heat was added to the system?

**accounts**

Mr. X purchased 2 machinery on a hire purchase system . he pays rs 125,000 down and 150,000 at the end of second yr, fourth year, sixth year. Interest is charged by vendor @ 10% p.a. with 2 yearly, rest on unpaid balance. Calculate the amount of interest and cash price.

**algebra**

how many solutions does the system of equations have? 6x+18y=9 and -1/3x+1/2 please help! thank you c:

**Math**

How many solution are there in the following system of equations? x=-6y+4 2x+12y=8 Please help me and explain it to me! I would really appreciate if you guys answered it!

**math**

A farmer has dogs and chickens running around in his backyard. There are a total of 36 animals, and the farmer counts a total of 56 legs. The farmer can use a system of equations to determine how many of each animal there are. He claims that one of the equations in the system ...

**History**

1)Which statement best explains how the War of 1812 contributed to the growth of the United States to include these states? A) Large numbers of soldiers later settled in the territories where the war had been fought. B) Military heroes from the war went into politics in the ...

**U.S History**

1) Air pollutants can do all of the following EXPECT: A) damage the respiratory system B) enter the bloodstream and harm other parts of the body*** C) cause discoloration to your hair D) reduce your protection from the sun's radiation 2) Biodegradable waste threatens the ...

**algebra**

The volleyball team at West View High School is comparing T-shirt companies where they can purchase their practice shirts. The two companies, Shirt Box and Just Tees, are represented by this system of equations where x is the number of T-shirts and y is the total cost of the T...

**Math; Solve by Graphing**

Which description best describes the solution to the following system of equations? y = −x + 4 y = 3x + 3 Line y = −x + 4 intersects the line y = 3x + 3. Lines y = −x + 4 and y = 3x + 3 intersect the x-axis. Lines y = −x + 4 and y = 3x + 3 intersect the...

**Math**

A farmer has dogs and chickens running around in his backyard. There are a total of 36 animals, and the farmer counts a total of 56 legs. The farmer can use a system of equations to determine how many of each animal there are. He claims that one of the equations in the system ...

**Math**

A farmer has dogs and chickens running around in his backyard. There are a total of 36 animals, and the farmer counts a total of 56 legs. The farmer can use a system of equations to determine how many of each animal there are. He claims that one of the equations in the system ...

**Math**

A farmer has dogs and chickens running around in his backyard. There are a total of 36 animals, and the farmer counts a total of 56 legs. The farmer can use a system of equations to determine how many of each animal there are. He claims that one of the equations in the system ...

**math**

what is the solution to the system of equations ? x=y-3 x 3y=13 A. (1,4) B.(4,1) C.(7,4) D. (2.5,5.5) please help my best answer is b

**SS**

"Contrary to the vulgar belief that men are motivated primarily by materialistic considerations, we now see the capitalist system being discredited and destroyed all over the world, even though this system has given men the greatest material comforts." - Ayn Rand I'm having a ...

**Social Studies**

What were the effects of the interstate highway system? 1.it caused decline in air 2.it connected surban areas to metropolitan areas 3.highway constructions projects created jobs 4.it enabled people to drive longer distances at faster speeds my best answer is 1 and 3 can u ...

**Social Studies**

Out of the experience of an extraordinary human disaster that lasted too long, must be born a society of which all humanity will be proud. The time for the healing of the wounds has come. The moment to bridge the chasms that divide us has come. Never, never and never again ...

**Finance**

Following are selected financial data in thousands of dollars for the Hunter Corporation. 2012 2011 Current assets $ 500 $400 Fixed assets, net 700 600 Total assets 1,200 1,000 Current liabilities 300 200 Long-term debt 200 200 Common equity 700 600 Total liabilities and ...

**US History**

Select all that apply. The four factors that caused New England manufacturers to start spinning mills were: A. power from waterfalls B. available cotton C. the first modern depression of 1819 E. the Embargo F. Clay's "American System" available labor G. the first tariff I ...

**life orientation(l.o)**

Please give me an example of your belief system and how it influences your life.

**math**

Lisa and Katie are playing a card game, and a total of 900 points has been scored. Lisa scored 150 more points than Katie. If you let l= the number of points that Lisa scored, and k= the number of points that Katie scored, then the problem can be represented by the system: l+k...

**Civics (Reed)(Check)**

1. What information is being presented? What facts are presented? For trial by jury: A: You cannot set up or establish your own court system. This amendment should be more known by citizens or the people. For excessive bail and fines: A: If you are accused of a small crime, ...

**Civics (Reed)(Check)**

This post is about accused persons in criminal cases and speedy and fair trial. 1. What information is being presented? What facts are presented? A: For accused persons in criminal cases: A: You are protected against the abuse of the govt. in criminal cases. The govt. cannot ...

**pysics**

550 g of water (cw = 4186 J/kg.K) at 75°C is poured into an 855 g aluminum (cw =900 J/kg.K) container with an initial temperature of 11°C. What is the final temperature of the system, assuming no heat is exchanged with the surroundings? Select one: a. 75 °C b. 59 °C c. 11...

**Algebra**

7x + 5 = y 3.5x + 20 = y Solve the system of equations. What method did you use to solve the system and why? Show your work. Can someone please explain to me the process of solving the system? That would be nice. Thanks! (=

**physics**

Four items, all with equal masses, are used to construct the device depicted to the right. Two of the items are uniform solid disks, the smaller of which has half the radius of the other. The disks are glued together so that they share a common axle. The other two items are ...

**physics**

A. State Ohm’s law B.Describe the process of electrolysis C. What is the relationship between resistance and resistivity D. What is the current through 8Ω device operating with 120V The potential difference required to pass 3A through 42Ω. E. Describe what is ...

**physics help me**

Four items, all with equal masses, are used to construct the device depicted to the right. Two of the items are uniform solid disks, the smaller of which has half the radius of the other. The disks are glued together so that they share a common axle.The other two items are ...

**Biology**

Describe the traits that distinguish animals from other organisms Explain the diversity of invertebrates, chordates, and primates using the theory of evolution Describe the structures and body systems of animals that allow them to maintain homeostasis Describe the structures ...

**Chemistry**

Spontaneous reactions ________. always release free energy*** always result in increase disorder of the system always take place at a rapid rate are always exothermic

**Science**

Historical models of the solar system include: A.Helliocentric,B.nebular,C.Geocentric model or earth centered universe and a _ model or sun centered universe

**Civics (Reed)(Check)**

This post is about accused persons in criminal cases and speedy and fair trial. 1. What information is being presented? What facts are presented? A: For accused persons in criminal cases: A: You are protected against the abuse of the govt. in criminal cases. The govt. cannot ...

**IT**

why is system Burn-in important?

**Economics**

Checking to see if I got these right. The ones I selected are marked with an * 1. The price paid for the use of capital is called (Points : 1) mortgage payment. rent. profit. wages. *interest. 2. Capital consists of (Points : 1) stocks and bonds. the assets of the government...

**Macroeconomics**

Checking to see if I got these right. The ones I selected are marked with an * 1. The price paid for the use of capital is called (Points : 1) mortgage payment. rent. profit. wages. *interest. 2. Capital consists of (Points : 1) stocks and bonds. the assets of the government...

**Informaton Technology**

How does BIOS optimisation affect the performance of the computer system, and how it is done?

**Informaton Technology**

Why is system Burn-in important?

**Informaton Technology**

Explain how each of the following contributes to the overall performance of a computer system and mentioned how it is done. (a) System optimisation (b) Component optimisation

**math**

Anyone please help me! Directions: Follow the instructions below to design a fair race for the new video game Animal Tracks. 1. Choose two animals with different speeds. You can choose from the chart that starts at the bottom of this page or do research to choose your own. (I ...

**Chemistry**

Consider the following system at equilibrium. CaCO3(s) mc032-1.jpg Ca2+(aq) + CO32–(aq) The addition of which compound will cause a shift in equilibrium because of a common ion effect? CCl4 CO2 CuSO4 Na2CO3

**CHECK my answers for drivers education please!**

11. The only sure way to reduce the body’s BAC and the degree of impairment is to (1 point) take a cold shower. wait the necessary time the body needs to eliminate the alcohol.*** handle a sudden emergency. consume several cups of black coffee. 12. Coping with emotions while...

**history**

1. What change was made in the 1969 to the south carolina constitution of 1895? a. the governor was permitted to succeed himself b. the residency requirement for voting was eliminated ** c. the court system would nolonger be controlled by the state senate d. the legislature ...

**CHECK my drivers ed answers**

1. Searching for other roadway users includes identifying (1 point) only those in motor vehicles. signs, signals, and roadway markings. users of different sizes and shapes. the characteristics of the roadway.**** 2. What is the Zone Control System? (1 point) a method of ...

**Science**

3. Which of the following small bodies are the hardest to tell apart because they are made of similar materials? dwarf planets and comets asteroids and comets comets and meteoroids asteroids and meteoroids** A scientist examines a sample of an object from the solar system. ...

**Science**

1. How do scientists classify small objects in the solar system? by size by shape by size, shape, and temperature by size, shape, and composition** 2.Which of the following categories of small bodies in the solar system does Ceres belong to? dwarf planets** comets meteoroids ...

**Social Studies**

HI, so these are questions from a test that I already took and I got these three wrong. But there letting me re do it so can someone explain to me or give me a link or something? Select a new deal program that helped improve the lives of south Carolinians. Explain what the ...

**HELP PLEASE?!!**

Circulatory systems of animals transport nutrients to tissues. Which system of plants performs a similar function? starch granules xylem and phloem tubes stomata apical meristems plant hormone system

**physics help pls**

Two masses of 200 grams and 400 grams are attached respectively at the end of the cord that passes through around a negligibly weight and frictionless pulley. a.) Find the acceleration of the system, b.) tension in each cord, c.) the distance and velocity of the masses when ...

**ss**

1. The Himalayas separate _________. (1 point) Pakistan and India the Indian subcontinent from the rest of Asia Afghanistan from the rest of South Asia northern and southern India 2. What impact do monsoon winds most have on South Asia? (1 point) Monsoon winds carry plenty of ...

**Math**

Why is the Cartesian System unique? The Cartesian System is unique because you can specify any point uniquely in a two or three dimensional space by using two or three Cartesian coordinates

**health**

The various activities of the nervous system include a function such as - A. Integrative B. Motor C. Sensory D. All of the above

**Math**

why is the Cartesian Coordinate System unique? The system is unique because it's concept of using a pair of axes in a three dimensional format

**Chemistry**

20. What is the molecular formula for alkane, alkenes and alkynes? 15.What happens to a reaction at equilibrium when more reactant is added to the system?

**Math**

Historically, why is the Cartesian Coordinate System unique? The system is unique because it's concept of using a pair of axes in a three dimensional format

**Geometry**

Historically, why is the Cartesian Coordinate System unique? The system is unique because it's concept of using a pair of axes in a three dimensional format

**chemistry**

If the average volume of all the blood in a human body is 4700 mL, what is the molarity of DNA in the human blood system?

**Chemistry**

A buffer system contains 0.30 M NH4+ and 0.15 M NH3. pKa of NH4+ is 9.25. How many moles of NaOH must be added to 1.00 L of this solution to increase the pH to 9.25? Hint: What is the (NH3) / (NH4+) when the pH=pKa?

**Check my answers? Science**

The order of events and ages of rocks by examining positions is *relative dating*. Gaps in rock layers are called *unconformities*. What uses properties of atoms to find ages of rocks? *Absolute Dating*. A life form in Precambrian Time was *Cyanobacteria*. What signaled the ...

**P.E**

1. Air pollutants can do all of the following EXCEPT: A. damage the respiratory system. B. enter the bloodstream and harm other parts of the body. C. cause discoloration to your hair. D. reduce your protection from the sun's radiation.*** 2. True or False Biodegradable waste ...

**Geometry**

Which ordered pair is the solution to the system of equations below? {3x-7y=-10 {5x-y=-6 A system of equations is shown below 2x+y=7 3x-2y=0 What is the solution to the system?

**Education technology**

1. which of the following is an example of tangible property? A method for creating ice cream that you friend thought of An idea for an invention that your dad mentioned briefly but did not write down•• Song lyrics printed in a songbook A quicker system of washing a car ...

**Math**

X-3y=1 4x+5y=4 Solve the system of equations.

**Math**

A 100 point test contains a total of 20 questions. The multiple choice questions are worth 3 points each and the short response answer questions are worth 8 pints each. Write a system of linear equations that represents this situation, my answer is to correlate the 3 points ...

**social studies**

1. The Himalayas separate _________. (1 point) Pakistan and India the Indian subcontinent from the rest of Asia Afghanistan from the rest of South Asia northern and southern India 2. What impact do monsoon winds most have on South Asia? (1 point) Monsoon winds carry plenty of ...

**MATH HELP PLZ!**

Two cell phone companies have different rate plans. Runfast has monthly charges $25 plus $10 per gig of data. B A &D’s monthly charge is $18 plus 15 per gig of data. Your task is to determine under what circumstances each company has the better pricing. You will derive and ...

**Algebra 2**

1. What is the determinant of the matrix? [5 6] [2 9] a. -33 b. 6 c. -6 d. 33 <---- my answer 2. What is the determinant of the matrix? [-4 -5] [ 2 -6] a. -14 b. -34 c. 14 d. 34 <---- my answer 3. Which expression gives the x-coordinate of the solution of the system? 2x+...

**physics**

A bag of cement of weight 325N hangs from wires as Shawn. Two of the wires make angels al=60 degrees a2=50 degrees with the horizontal. If the system is in equilibrium find the tension T1, T2 and T3 in the wires.

**Math (Mrs. Sue, please help?)**

A system of equations is given below: y = 3x + 4 2x + 3y = 10 Which of the following steps could be used to solve by substitution? (4 points) 3x + 4 = 2x + 3y 2x + 3(3x + 4) = 10 2(3x + 4) + 3y = 10 3(y = 3x + 4) (I don't understand this at all and I've read through the module...

**Psychology**

5.Regarding the trichromatic theory of color vision, which statement is most accurate? A. The theory maintains that receptor cells are grouped in pairs, such as black-white. B. Specialized cells in the retina engage in a process called feature detection. C. Specialized cells ...

**Chemistry**

Consider the reaction N2(g)+3H2<-->2NH3(g). What is the effect of decreasing the volume on the contained gases The reaction shifts toward the product gas The system reacts by increasing the number of gas molecules*** the pressure on the gases decreases momentarily ...

**History**

5.)why would americans free states want slaves state to remain part of the united states as opposed to just letting them leave the union? A.)Federal trade laws, unequal taxation, and slavery B.)Cotton processing, the slave trade, and the federal banking system C.)Slavery, self...

**Math**

Solve the system of equations algebraically . show all your steps. Y=x^2+2x Y=3x+20

**Math**

Solve the system of equations algebraically. Show all of your steps. Y=x^2+2x y=3x+20

**Social Studies (please check Ms. Sue)**

Please check this. Thanks!!! 1. How did President John F. Kennedy most support civil rights? a. He favored voting rights laws.*** b. He organized a march. c. He established the Peace Corps. d. He rode "freedom buses." 2. Which of the following was a result of the Civil Rights ...

**math 1324**

a natural history museum borrowed $2,000,000 at simple annual interest to purchase new exhibits. Some of the money was borowed at 7%, some at 8.5%, and some at 9.5%. Use a system of linear equations to determine how much was borrowed at each rate if the total annual interest ...

**Science**

In a heat engine, if 700 J of heat enters the system, and the piston does 400 J of work, what is the final internal (thermal) energy of the system if the initial energy is 1,200 J?

**health and physical**

your digestive system has three main functions:digestion, absorption and elimination. in which organ dose absorption begin? a. mouth*** b.stomach c.small intestine d.gallbladder i think a.mouth

**health**

without this system in the body you would get really sick because toxins and waste would build up. 1. cardiovascular 2. excretory 3.integumentary 4. muscular

**health and physical**

the noise diaphragm and lungs are part of the _____ system A. circulatory B. excretory C.nervous D.respiratory

**health**

The peripheral nervous system (select all that apply) Is made up of the brain and spinal cord Links the body to the brain and spinal cord Is made up of sensory and motor neurons Is responsible for thought and reasoning I think it could be b and c?

**pre-algebra**

Directions: Follow the instructions below to design a fair race for the new video game Animal Tracks. 1. Choose two animals with different speeds. You can choose from the chart that starts at the bottom of this page or do research to choose your own. 2. Design a fair race in ...

**history**

1. How did president John F. Kennedy most support civil rights? a. He favored voting rights laws ** b. He organized a march c. He established the peace corps d. He rode “freedom buses” 2. Which of the following was a result of the civil rights act of 1964 a. Civil rights ...

**Earth science**

What is an example of a stable system? How were you able to determine whether or not this system is stable? Please don't attach files, my parents do not allow me to click on any attached files!

**Science**

What is an example of a stable system? How were you able to determine whether or not this system is stable? I really appreciate your help!