# Homework Help: Computers: Operating Systems

## Recent Homework Questions About Operating Systems

**Physics**

Work done by conservative forces change only A)PE of the system B)KE of the system C) ME of the system D)None of these

*Saturday, December 24, 2016 by Nikita*

**Science Chemistry**

Phosphorous (P) is an indispensable nutrient in food production. According to the estimates, mineral phosphorous resources will end up within 50 years and consequently new sources of P has to be found. A human excretes 2,2 g of phosphorous (P) per day on average. In ...

*Thursday, December 22, 2016 by karem*

**history**

Which of the following is a major example of Abraham Lincoln's policy of leniency toward the defeated South? A. Pres Lincoln's willingness to have federal government assume responsibility of the Confederate government's war debts. B. Pres Lincoln's choice to have a Southerner...

*Wednesday, December 21, 2016 by Hi*

**Science**

Phosphorous (P) is an indispensable nutrient in food production. According to the estimates, mineral phosphorous resources will end up within 50 years and consequently new sources of P has to be found. A human excretes 2,2 g of phosphorous (P) per day on average. In ...

*Wednesday, December 21, 2016 by karem*

**Math**

Is (2,12) a solution to the given system? y>2x+4 y<3x+7 Yes No What is the solution of the system of equations shown below? 2x+2y=10 5x-2y=4 (-2,7) (2,7) (2,3) (3,2) The point (-3,11) is a solution of which of the following systems? y≥x-2 2x+y≤5 y>x+8 3x+y>2 y...

*Tuesday, December 20, 2016 by Anonymous*

**American Government**

1. "Americans of all ages, all conditions, and all dispositions, constantly form associations... not only for commercial and manufacturing but of a thousand other kinds -- religious, moral, serious, futile, extensive or restricted, enormous or diminutive. " -Alexis de ...

*Tuesday, December 20, 2016 by M*

**Write the system of equations as an augmented matr**

-4x-y=-6 -8x-5y=-6 Solutions:

*Monday, December 19, 2016 by Anonymous*

**Physics**

A 13 kg block(mA) rests on a level table. The coefficient of kinetic friction between the block and the table is .15. A string of negligible mass is attached to the block. The string, which is perfectly horizontal, passes through a frictionless pulley at the edge of the table ...

*Monday, December 19, 2016 by Anonymous*

**Algebra 1**

How many solutions does this system have? 2x + y = 3 6x = 9 - 3y A) One B) None C) Infinite**** D) Two And if anyone knows the other question "connexus academy" I'd appreciate that thanks!!

*Monday, December 19, 2016 by Math help please!*

**Calculus**

A chemical substance is draining from a conical filtering system at a rate of 100 cubic centimeters per minute into a cylindrical storage tank below. The conical filter and cylindrical tank each have a diameter of 60 centimeters, and the height of the cone also measures 60 ...

*Monday, December 19, 2016 by Luke*

**Amerian government**

PLEASE PLEASE PLEASE HELP ME 1. What type of power does the Constitution grant to the Supreme Court? (1 point) executive power federal power judicial power legislative power 2. Which are examples of judicial restraint in the Supreme Court? Select all that apply. (3 points) •...

*Sunday, December 18, 2016 by andrea*

**math**

Two cars leave Kansas City at the same time. One car is moving east and the other west. After 5 hours, the cars are 575 miles apart. One car is traveling 15 miles per hour faster than the other. Let S = the speed of the slower car and F = the speed of the faster car. If one ...

*Sunday, December 18, 2016 by Jose*

**Physics**

9. Figure shows an aluminium wire of length 60 cm joined to a steel wire of length 80 cm and stretched between two fixed supports. The tension produced is 40 N. The cross-sectional area of the steei wire is 1.0 mm2 and that of the aluminium wire is 3.0 mm2. The minimum ...

*Sunday, December 18, 2016 by Vandit*

**Algebra**

A taxi cab charges $0.55 per mile in addition to a $1.75 flat rate fee. Susie has $10 to spend on a taxi cab ride. The taxi driver will not give anyone a ride unless they are going somewhere that is more than 2 miles away. Model Susie’s situation with a system of inequalities.

*Friday, December 16, 2016 by TY*

**Gauss-Jordan elimination**

Write the system of equations as an augmented matrix. Then solve for x and y. -3x+3y=-21 3x+2y=-4

*Thursday, December 15, 2016 by Anonymous*

**augmented matrix**

Write the system of equations as an augmented matrix. Then solve for x and y. 3x+y=-11 -9x-3y=33

*Thursday, December 15, 2016 by Anonymous*

**Gaussian Elimination Method**

Write the system of equations as an augmented matrix. Then solve for x and y. -3x-y=11 -9x-2y=34 Solution =

*Thursday, December 15, 2016 by Devin*

**Math**

PLEASE CHACK MY ANSWER!!! Discussion for Applications of Linear Systems When solving a system of equations, how do you determine which method to use? My answer: I determine which method to use by looking at the equations. If both equations are in slope-intercept form, I choose...

*Thursday, December 15, 2016 by Matthew*

**Physics**

A 0.50-kg mass is placed on the end of a vertical spring that has a spring constant of 75 N/m and eased down into its equilibrium position. (a) Determine the change in spring (elastic) potential energy of the system. PEs=1/2kx^2=1/2(75)(0.5)^2=9.375 (b) Determine the system...

*Wednesday, December 14, 2016 by Court*

**Social Studies**

1.Diversity most closely means (1 point) A. Sharing cultural traits and practices with others. B. Making up a whole of many different parts. ** C. being a member of a small ethnic group. D. Having many similar regions next to one other. 2. How does life in Istanbul differ from...

*Wednesday, December 14, 2016 by Check Please*

**precalculus**

can you check my work? Solve the system of equations at the right by the method of substitution. Verify your results by using a graphing utility. x^2+y^2-4x+6y-5=0, x+y+5=0 x=-y-5 (-y-5)^2+y^2-4(-y-5)^2+6y-5=0 y=√5-5, y=-5-√5 x+√5-5+5=0 x=-√5 x-5-√5+5=0 x=√5 y=√5...

*Wednesday, December 14, 2016 by Anonymous*

**precalculus**

Solve the system of equations at the right by the method of substitution. Verify your results by using a graphing utility. x2+y2-4x+6y-5=0, x+y+5=0 answer: x=-y-5 (-y-5)2+y2-4(-y-5)2+6y-5=0 y=√5-5, y=-5-√5 x+√5-5+5=0 x=-√5 x-5-√5+5=0 x=√5 y=√5-5, y=-5-√5, x...

*Wednesday, December 14, 2016 by Anonymous*

**Algebra**

Kyle has 13 coins in his pocket that are either quarters or nickels. He has $2.05 in his pocket in coins. Let q represent the number of quarters and n represent the number of nickels. The following system of equations represents this situation: q+n=13 0.25q+0.05n=2.05 How many...

*Wednesday, December 14, 2016 by Suzan*

**History**

Why did Horace Mann feel that reforming the American education system was important? It would help people attain better jobs It would help in the fight to end slavery It would help in the fight for gender equality It would help people become better christians

*Tuesday, December 13, 2016 by Hihicat*

**Maths**

The diagram shows a 6 kg block resting on a rough horizontal table. It is connected by light, inextensible strings passing over two smooth pulleys to two blocks of masses 2kg and 5kg which hang vertically. Calculate the coefficient of friction between the 6kg block and the ...

*Tuesday, December 13, 2016 by John B*

**Algebra**

For the following system, if you isolated x in the first equation to use the Substitution Method, what expression would you substitute into the second equation? −x − 2y = −4 3x + y = 12 −2y − 4 2y − 4 2y + 4 −2y + 4 --- I think it'd be this one, is it correct?

*Tuesday, December 13, 2016 by anonymouse*

**political science**

1) Scenario: The President appoints Dan Evans to Senator Adams' seat when Adams resigns due to a personal scandal. This scenario is: a) Constitutional, because it is within the President’s powers to appoint Senators when one dies or resigns in the middle of his/her term. b) ...

*Tuesday, December 13, 2016 by Alex*

**Algebra**

Hello....I was helped on this question earlier, but I don't understand why we divide by 2? Please help, please see the below: The president will order 5 turkey sandwich combos and 7 steak lunches and spends $124.00. The other president will get 10 turkey combos and 5 steak ...

*Monday, December 12, 2016 by Mary*

**math**

is it possible for system of two linear equations to have no solution.

*Monday, December 12, 2016 by Anonymous*

**social studies**

Which document establishes the separation of powers? a. the Bill of Rights b. the Articles of Confederation c. the Declaration of Independence d. the Constitution *** In what way did the structure of the Virginia House of Burgesses influence the governments of the states and ...

*Monday, December 12, 2016 by LAFAYETTE*

**Algebra**

2. Tell whether the system has one solution infinitely many solutions or no solution. x=-7y+34 x+7y=32 a. one solution b. infinitely many solutions c. no solution*** can you please solve this thank you

*Monday, December 12, 2016 by Leslie*

**algebra**

1. Tell whether the system has one solution infinitely many solutions or no solution. 6y=-5x+24 2.5x+3y=12 a. one solution b. infinitely many solutions*** c. no solution i know its B but can you solve it step by step for me thank you

*Monday, December 12, 2016 by Leslie*

**Algebra**

Please help: The president will order 5 turkey sandwich combos and 7 steak lunches and spends $124.00. The other president will get 10 turkey combos and 5 steak combos for $140.00. How much is a turkey sandwich combo? Write a system of equation. 5x + 7y = $124.00 10x + 5y= $...

*Sunday, December 11, 2016 by Mary*

**Physics**

1. The figure shows a 100-kg block being released from rest from a height of 1.0 m. It then takes 0.53 s for it to reach the floor. What is the mass m of the block on the left? There is no friction or mass in the pulley, and the connecting rope is very light. A) 16 kg B) 14 kg...

*Sunday, December 11, 2016 by Shelby*

**Algebra**

Can you please review to see if I am on the right track with this problem: The length of a rectangle is 2 centimeters less than two times the width of the rectangle. If the perimeter of the rectangle is 98 centimeters, what is the length of the rectangle? Write a system of ...

*Sunday, December 11, 2016 by Leroy*

**Algebra**

Can you please help me with this problem: The x-intercept of a line has a value of -3/2 and a y intercept of 3. Another line has a slope that is three times the slope of the first line and has a y-intercept that is 28 more than the first line's y-intercept. What is the ...

*Sunday, December 11, 2016 by Lucille*

**physics**

A car's internal combustion engine can be modeled as a heat engine operating between a combustion temperature of 1500∘C and an air temperature of 20∘C with 30% of the Carnot efficiency. The heat of combustion of gasoline is 47 kJ/g. Q) What mass of gasoline is burned to ...

*Sunday, December 11, 2016 by Help*

**Physics**

1. The figure shows a 100-kg block being released from rest from a height of 1.0 m. It then takes 0.53 s for it to reach the floor. What is the mass m of the block on the left? There is no friction or mass in the pulley, and the connecting rope is very light. A) 16 kg B) 14 kg...

*Sunday, December 11, 2016 by Shelby*

**History**

1. Which answer best explains how the Articles of Confederation addressed the question of creating a court system? The Articles established the trial-by-jury system for the first time in history. The Articles created state, regional, and national courts throughout the land...

*Sunday, December 11, 2016 by Caitlyn - Please help*

**US HISTORY - Help please**

Which answer best explains how the Articles of Confederation addressed the question of creating a court system? The Articles established the trial-by-jury system for the first time in history. The Articles created state, regional, and national courts throughout the land.*** ...

*Sunday, December 11, 2016 by Caitlyn*

**Social Studies *Check Answers***

Anyone mind checking these 2 quiz answers please? Which statement best explains why nation-states write constitutions? A: Constitutions give citizens unlimited powers. B: Constitutions establish nation-states. C: Constitutions allow governments to elect leaders D: ...

*Sunday, December 11, 2016 by Natalie*

**Chemistry**

Which of the following is TRUE for a system that is in dynamic equilibrium? A) The forward reaction goes to 100% completion. B) The concentration of products is equal to the concentration of the reactants. C) The reaction rate of the forward reaction approaches zero. D) Both ...

*Saturday, December 10, 2016 by Mimi*

**Algebra**

Can you please help me with this problem: The x-intercept of a line has a value of -7/6 and a y-intercept of 7. Another line has a slope that is twice the slope of the first line an a y-intercept that is 15 more than the first lines' y-intercept. What is the product of the ...

*Saturday, December 10, 2016 by Chris*

**Algebra**

Can you please help with this problem: At Super Saver Mart (SSM), you can buy three packs of toilet paper and seven boxes of cereal for $46.00. You can also purchase 8 packs of toilet paper and 4 boxes of cereal for $75.00 at SSM. What is $14 more than the combined price of ...

*Saturday, December 10, 2016 by Leroy*

**Algebra**

Can you PLEASE help me with this Algebra problem: In a hotel conference room, the number of chairs is 47 more than the number of people currently in the room. The total number of legs currently in this room is 938. What is the sum of the digits in the number of people ...

*Saturday, December 10, 2016 by Anonymous*

**Algebra**

Please help me with this Algebra problem: The length of a rectangle is 91 less than six times the width of the rectangle. If the perimeter of the rectangle is 84 centimeters, what is the length of the rectangle? Write a system of equations for this situation and find its ...

*Saturday, December 10, 2016 by Leroy*

**Algebra**

Can you please help on this Algebra problem? Keana's piggy bank contains $4.30 in nickels and dimes only. If she has 59 coins in her ban, then what is the sum of the digits in the number of nickels in Keana's bank? Write a system of equations for this situation and find its ...

*Saturday, December 10, 2016 by Leroy*

**Anatomy and Physiology**

1. Simple sugars are (1 point) lipids. monosaccharides. polysaccharides. minerals. 2. Which of the following statements is not true about the immune system? (1 point) In children, lymphatic tissues such as adenoids, tonsils, and lymph nodes enlarge as growth ...

*Saturday, December 10, 2016 by unknown*

**system of equations**

Write the system of equations as an augmented matrix. Then solve for x and y. 5x-3y=-34 10x−5y=−65

*Friday, December 9, 2016 by Anonymous*

**Algebra 1**

1.) Which best describes a system of equations that has no solution? •consistent, independent •inconsistent, dependent •consistent, dependent •inconsistent* ANSWER: D Please check my answer, thank you!

*Friday, December 9, 2016 by Anon*

**Algebra**

My science class is pretty small. There are just 18 students in the class. My teacher, Mr. Burnett, has an unusual system for picking lab partners. He has given each student a number from 1 to 18, and on lab days, he pulls two numbers out of a bag to match people up. During ...

*Thursday, December 8, 2016 by Chioma*

**Civics**

Which of the following is the best example of the idea of "separation of powers" in the American constitutional system? A.The president appoints judges, but legislators get elected.** B. The process for creating laws involves Congress and the president.** C. The military is ...

*Thursday, December 8, 2016 by Civics help*

**Civics**

Which of the following is the best example of the idea of "separation of powers" in the American constitutional system? A.The president appoints judges, but legislators get elected.** B. The process for creating laws involves Congress and the president.** C. The military is ...

*Thursday, December 8, 2016 by Need help*

**Operating System Application**

Growth of the size in main memory

*Wednesday, December 7, 2016 by Anonymous*

**Physics**

We have a heat engine that produces 150 J of heat, does 40 J of work, and emits 110 J into another system. What is the efficiency of the heat engine? (show you work)

*Wednesday, December 7, 2016 by Mark*

**Social Studies Pretest Lesson 1 Unit 7**

1: Why is urbanization associated with the Industrial Revolution? A:The expansion of family farms refocused the nation on agriculture. B:The concentration of factories in cities brought job opportunities. C: Settlers expanded the frontier West of the Mississippi river. D: ...

*Wednesday, December 7, 2016 by Reeces*

**pre calculus**

In the rectangular coordinate system, each point (x, y) has a unique representation. Explain why this is not true for a point (r, Θ) in the polar coordinate system.

*Wednesday, December 7, 2016 by john*

**algebra 1**

Name the point of intersection for the following system, if it exists. 4x â€“ 3y = -3 3x â€“ y = -6

*Wednesday, December 7, 2016 by Anonymous*

**Physics**

Just as no mechanical device can be 100% efficient, no heat engine can transfer 100% of its heat to a single object. Some of the heat energy must be wasted (released into the environment). We have a heat engine that produces 150 J of heat, does 40 J of work, and emits 110 J ...

*Wednesday, December 7, 2016 by Jessica*

**science double check answers**

1.Asteroids in our solar system are a)planets b)comet remains c)found in an asteroid belt** d)pieces of ice 2.Which of the following would not be found on the electromagnetic spectrum? A)The wavelengths of electromagnetic radiation B)The frequency of electromagnetic radiation ...

*Tuesday, December 6, 2016 by katrina*

**algebra**

Solve each system of eaquations by graphing or using a table. 5x-y=12 3x+2y=12

*Tuesday, December 6, 2016 by ram*

**Psychology Final Exam 2**

Check my answers? 17. A _________ is the functional unit of the nervous system. (1 point) Neuron******* Dendrite Head Cell body 18. The Central Nervous System consists of the __________ and __________. (1 point) heart and blood vessels muscles and tendons axons and dendrites ...

*Tuesday, December 6, 2016 by Ava*

**U.S History**

Which of the following offers the best definition of the phrase "headright system"? A)Settlers were given land and, in return, were expected to farm and build on it.*** B)Settlers were given money if they agreed to sell a portion of their crops to Britain. C)Settlers were ...

*Monday, December 5, 2016 by katrina*

**Social studies please help**

1. What is a reason that the missouri compromise did not have lasting effects? A. It only applied to the lands of the Louisiana purchases. B. It only applied to the lands of the Mexican Cession. C. It relied on popular sovereignty.*** D. It limited the number of ...

*Monday, December 5, 2016 by Blooky*

**Physics**

We have a heat engine that produces 150 J of heat, does 40 J of work, and emits 110 J into another system. What is the efficiency of the heat engine? Please don't give me the answer! Just help figure out how to find it! The description for the lesson with this question was 1 ...

*Monday, December 5, 2016 by Leila*

**American Government**

Please I need Help!!!!!!!!!!!!!!!!!! 1. What type of power does the Constitution grant to the Supreme Court? (1 point) executive power federal power judicial power legislative power 2. Which are examples of judicial restraint in the Supreme Court? Select all that apply. (3 ...

*Monday, December 5, 2016 by Katie*

**Physics**

A mass (0.5 kg) and spring (k = 250 N/m) system oscillates with an amplitude of 3.5 cm. a) What is the total mechanical energy of the system? b) What is the maximum speed of the mass? c) What is the maximum acceleration of the mass? I need help please. What equation should I ...

*Sunday, December 4, 2016 by Anonymous*

**Algebra**

Can you please help? I am working System of Equations. I need to find the solution of each of the following systems: How do I solve...thank you Y = 5x -3 and Y = -3x +5

*Sunday, December 4, 2016 by Jaraud*

**SS**

"We seek no conquest. All we ask it to be left alone According to this quote which statement best summarizes the souths agenda A.to continue their way of life unchanged b to accept changes to the plantation system c. to change the souths borders d. to expand slavery into the ...

*Sunday, December 4, 2016 by Lucina*

**math**

Dr. Mallory practices at your hospital and your competitor. Presented below are data for DRG 469 (major joint and limb reattachments, (lower extremity) with MCC that reflects practice patterns for Dr. Mallory at the two hospitals: Your Hospital Competitor ...

*Sunday, December 4, 2016 by Alfred Johnson*

**Economics**

Suppose that there are 1,000 hot-pretzel stands operating in Toronto. Each stand has the usual U-shaped average total cost curve. Both the market demand curve and the supply curve for pretzels are linear, and the market for pretzels is in long-run competitive equilibrium. a) ...

*Sunday, December 4, 2016 by Mitch*

**pre calculus**

use matrices to solve the system of equations , if possible 2x+3y+z=10 2x-3y-3z=22 4x-2y+3z=-2

*Sunday, December 4, 2016 by Anonymous*

**pre calculus**

use matrices to solve the system of equations , if possible. 2x+y+2z=4 2x+2y=5 2x-y+6z=2

*Sunday, December 4, 2016 by Anonymous*

**Physics**

A mass (0.5 kg) and spring (k = 250 N/m) system oscillates with an amplitude of 3.5 cm. a) What is the total mechanical energy of the system? b) What is the maximum speed of the mass? c) What is the maximum acceleration of the mass? I need help please! Do it step by step and ...

*Friday, December 2, 2016 by Anonymous*

**Calculus**

Find the volume of the solid of revolution obtained by revolving the plane region R bounded by y= x^5, the y-axis, and the line y=3 about the x-axis So far: y=x^5 is equal to x=5th root y. I've plugged that in to pi(r^2)h, and got V = pi ∫[0,3] y^(2/5) dy. so far I've gotten...

*Friday, December 2, 2016 by James*

**Algebra 1B**

24. Solve the system of equations algebraically. Show all of your steps. Y = x^2 + 2x and y = 3x + 20. Btw this is a workpad problem. I just need to be put in the right direction, on how to do it.

*Friday, December 2, 2016 by Ashley*

**Math**

The area of a right triangle is 12 square inches, and the sum of the lengths of the two legs, a and b, is 16 inches. Write a system that could be used to find the lengths of the legs of the right triangle.

*Friday, December 2, 2016 by Sylvester*

**Science**

A lead calorimeter with mass of 150g contains 200g of water. The calorimeter and water are in thermal equilibrium at a specific temperature. Two metallic blocks are placed into the water. One is a 50.0g piece of aluminum heated at 90 degrees celcius. The other has a mass of ...

*Friday, December 2, 2016 by Anonymous*

**Science**

A lead calorimeter with mass of 150g contains 200g of water. The calorimeter and water are in thermal equilibrium at a specific temperature. Two metallic blocks are placed into the water. One is a 50.0g piece of aluminum heated at 90 degrees celcius. The other has a mass of ...

*Friday, December 2, 2016 by Angel*

**algebra 2a solving systems using matrices**

write the system of equations represented by the matrix [0 1 2 4] [-2 3 6 9] [1 0 1 3] a: x+2y=4 -2x-3y+69=0 x+y=3 b: x+2y=4 -2-3y+6=9 x+y=3 c: y+2z=4 -2x+3y+6z=9 x+z=3 d: x+2z=4 -2x-3y+6=9 think its A

*Friday, December 2, 2016 by mia*

**Physics**

One of their side jobs is a safe delivery and installation. A pulley system is used to lift the safe 2 meters above the ground. But the rope snaps! To avoid cracking from any drops, a large, stiff spring is placed below the safe while it's lifted. If the 1200 kilograms safe ...

*Thursday, December 1, 2016 by Anonymous*

**Social Studies**

Could you help me with these questions? 1. Which statement best explains the significance of the signing of the Mayflower Compact? * 2. What was a major reason for the colonization of the Americas by Europeans? * 3. Which reason led to the establishment of colonies in both ...

*Thursday, December 1, 2016 by King Comfort*

**science**

I'm stuck on the following questions 1)The geocentric model of the universe states that the Earth is the center of the universe. This is an example of a A)scientific conclusion B)pseudoscience C)scientific law*** D)Scientific method Through process of elimination i know its ...

*Wednesday, November 30, 2016 by katrina*

**precalculus**

When using Gaussian elimination to solve a system of linear equations, explain how you can recognize that the system has no solution.

*Wednesday, November 30, 2016 by Anonymous*

**precalculus**

When using Gaussian elimination to solve a system of linear equations, explain how you can recognize that the system has no solution. Give an example that illustrates your answer.

*Wednesday, November 30, 2016 by Anonymous*

**precalculus**

Can you check my answer? If it is wrong can you please explain why and give the correct answer? Use Gaussian elimination to write the system of equations given below in row-echelon form. 2x+4y+z=-4 2x-4y+6z=13 4x-2y+z=6 answer:2x+4y+z=-4 8y-5z=-17 z=1

*Wednesday, November 30, 2016 by Anonymous*

**precalculus**

please check my answers 1.Use Gaussian elimination to write the system of equations given below in row-echelon form. 2x+4y+z=-4 2x-4y+6z=13 4x-2y+z=6 answer:2x+4y+z=-4 8y-5z=-17 z=1 2.Find the solution to the system of equations given below. x+y+z=2 -x+3y+2z=8 4x+y=4 answer: 0...

*Wednesday, November 30, 2016 by Anonymous*

**pre calculus**

Use Gaussian elimination to write the system of equations given below in row-echelon form. 2x+4y+z=-4 2x-4y+6z=13 4x-2y+z=6

*Wednesday, November 30, 2016 by Anonymous*

**Algebra**

A grocery store makes a 20-pound mixture of almonds and cashew nuts. The store charges $4 per pound for almonds and $5.50 per pound for cashews. The total value of the mixture is $92. Write a system to find how many pounds of each type of nut are in the mixture.

*Wednesday, November 30, 2016 by Nola*

**Science**

The lung is to the respiratory system as the ____ is to the integumentary system. A) heart B) kidney C)hand D)brain B

*Wednesday, November 30, 2016 by Hayden*

**precalculus**

write the system of equations in row-echelon form 2x+4y+z=-4 2x-4y+6z=13 4x-2y+z=6

*Tuesday, November 29, 2016 by Anonymous*

**precalculus**

how do you determine when a system of equations is written in row-echelon form?

*Tuesday, November 29, 2016 by Anonymous*

**object oriented programming**

Let’s consider there will be 5 delicious food available at your new restaurant which will open by the end of 2016. To make the cashier's job easier, build a C++ console application to automate the process of billing on a daily basis. Specifically, the billing system must...

*Tuesday, November 29, 2016 by ramaah*

**Social Studies**

Which of the following statements best summarizes the system of railroads shown on the map? A. The majority of the railroads that connected the North to the South were built by 1850. B. The railroads established by 1860 each began and ended at a major American city or port. C...

*Tuesday, November 29, 2016 by JP*

**pre calculus**

Use Gaussian elimination to write the system of equations given below in row-echelon form 2x+4y+z=-4 2x-4y+6z=13 4x-2y+z=6

*Tuesday, November 29, 2016 by Anonymous*

**Physics**

Could someone please help walk me through this problem I'm struggling with? Thanks in advance! A brick with mass m1=2.5 kg can move without friction on a horizontal plane. The brick is attached to a wall by an ideal spring with spring constant k=2300 N/m. A second brick with ...

*Tuesday, November 29, 2016 by Jamie*

**Physics**

Hi, I've been having trouble with this physics problem. I'm not sure where to begin. A brick with mass m1=2.5 kg can move without friction on a horizontal plane. The brick is attached to a wall by an ideal spring with spring constant k=2300 N/m. A second brick with mass m2=1.2...

*Tuesday, November 29, 2016 by Josh*

**pre calculus**

Create systems of equations in two variables that have (a) no solution, (b) one distinct solution, and (c) infinite solutions. Show that each system has the indicated number of solutions by using a graph or solving the system.

*Tuesday, November 29, 2016 by Anonymous*

**precalculus**

Which of the following shows an inconsistent system of equations? ________________________________________ 4x - 2y = 10 ; y = 2x - 5 3x + 2y = 1 ; 2x - 3y = 1 2x + y = 2 ; y = -2x - 2 3x + 4y = 5 ; 6x + 8y = 10 Is 4x-2y=10 y=2x-5 the correct answer?

*Tuesday, November 29, 2016 by Anonymous*

**precalculs**

how do you find all the solutions to the system of equations .2x^2-2x-y=14 .2x-y=-2

*Tuesday, November 29, 2016 by Anonymous*