Monday

May 2, 2016
**chemistry**

nearest star distance of 4.3 light years proxima centauri is the nearest star to our solar system. what is the distance to proxima centauri kilometers? the speed of light in space is 2.998 x10^8 m/s.
*Friday, January 30, 2015 by help plz *

**anthropology**

2.As an anthropologist you are interested in the dynamics of a Matrilineal society. What characteristics would you identify as unique within this kinship system from your own? 3.Why do kinship systems work? Where, if any, would you find a working kinship system within the ...
*Friday, January 30, 2015 by jimmy*

**physics**

The equation of a SHM of a 600 g object is given as x = 0.45 cos 6.4 t where the displacement x is in meters and time in seconds. What is the total energy of the system?
*Friday, January 30, 2015 by ll*

**Science **

1. Which of the following best summarizes the function of the respiratory system? A. to transport oxygen to cells and wastes away from cells. B. to protect the organs in the chest cavity C. to move oxygen from the air into the body and carbon dioxide from the body into the air...
*Thursday, January 29, 2015 by Anonymous *

**physics**

A block and tackle with a velocity of 5 is used to raise a mass of 25kg through a vertical distance of 40cm at a steady rate,if the effort is equal to 60N,determine the distance moved by effort, work done by the effort in lifting the load and the loss of energy involved in ...
*Thursday, January 29, 2015 by happiness*

**math**

Two station astronauts will each perform three 8-hour EVAs within 13 days to repair a damaged solar panel that was impacted by a micrometeoroid on the space station. What is the total amount of oxygen needed by the two astronauts to accomplish this? Please put your answer in ...
*Thursday, January 29, 2015 by math*

**chemistry 116**

The thermite reaction demonstrated in class requires high temperatures to start the reaction. A simple open flame is not enough to start the reaction. Once the reaction is going, then it generates enough heat to keep the reaction going. According to the literature on thermite...
*Wednesday, January 28, 2015 by danny*

**physics**

a spring balance is tied to a massless inextenxible string a small object of mass 60kg is attached to the hook of the spring balance. this system is now whirled about a vertical axis so that object performs ucm with centripetal acceleration/21m/s^2.thespring balance will now ...
*Wednesday, January 28, 2015 by abhijit*

**Chemistry **

Suppose NaOH is added to the following system when it is at equilibrium. NH3 (aq) + H2O (l) = NH4 (aq) + OH (aq) a) in which direction will the reaction shift after the NaOH is added? b) will this stress increase or decrease the value of the reaction quotient, Q?
*Tuesday, January 27, 2015 by Anonymous*

**Math**

Jamie is saving money to buy a new video system. So far, he has saved $16, which is 15% of the total cost of the system. What is the total cost of the system?
*Tuesday, January 27, 2015 by Amy*

**achieving excellence**

Part 1 of 1 - 5.0 Points Our learning style refers to: A. how much we know. B. how we best understand information. C. how fast we read and write. D. what we are learning. Reset Selection Mark for Review What's This? 5.0 Points Being ...
*Tuesday, January 27, 2015 by Anonymous*

**chemistry 116**

A 36.0 g piece of copper at 130.0 C is placed in 50.0 g of water at 20.0 C. What is the temperature (in C) of the water once the system reaches equilibrium? The molar heat capacity of copper is 24.5 J/(mol·K). The specific heat capacity of water is 4.18 J/(g·K...
*Tuesday, January 27, 2015 by danny*

**Science**

#1 Which of the following allows a plant's vascular system to work as a transport system? A A plant's vascular system is made up of specialized cells that move around the plant as it grows. B A plants vascular system is made up of specialized cells that are covered in ...
*Tuesday, January 27, 2015 by Maark*

**math**

Here's my question: Determine if each system has one, two, or no solutions. (Show your work - 3 marks each) a)y=2x^2-2x+1 and y=3x-5 b)y=x^2+3x-16 and y=-x^2-8x-18 Here's my work on the question: a) x=(-b plus/minus sign (square root b^2-4ac)/(2a) x=(--2 plus/minus ...
*Monday, January 26, 2015 by Alex*

**Science**

Check My Answers, please? Which of the following planets is considered a rocky, or terrestrial, planet? Venus **** Neptune Saturn Uranus Which of the following statements about the beginning of the solar system is true? The planets that formed closest to the sun became gas ...
*Monday, January 26, 2015 by Kenxie*

**anthropology**

Why do kinship systems work? Where, if any, would you find a working kinship system within the United States? Give examples for both question
*Monday, January 26, 2015 by jimmy*

**anthropology**

I am not understanding, it is confusing When individuals get married, alliances are formed between the two families. In some cultures there will also be a formal economic exchange. Three forms discussed in this chapter are bridewealth, bride service and dowry. Discuss each ...
*Monday, January 26, 2015 by jimmy*

**anthropology**

When individuals get married, alliances are formed between the two families. In some cultures there will also be a formal economic exchange. Three forms discussed in this chapter are bridewealth, bride service and dowry. Discuss each economic form with its positive and ...
*Monday, January 26, 2015 by jimmy*

**anthropology**

I look there and I can not found this answer. I been reading.As an anthropologist you are interested in the dynamics of a Matrilineal society. What characteristics would you identify as unique within this kinship system from your own
*Monday, January 26, 2015 by jimmy*

**anthropology**

Why do kinship systems work? Where, if any, would you find a working kinship system within the United States? Give examples for both questions.
*Monday, January 26, 2015 by jimmy*

**anthropology**

As an anthropologist you are interested in the dynamics of a Matrilineal society. What characteristics would you identify as unique within this kinship system from your own?
*Monday, January 26, 2015 by jimmy*

**Physics**

19. Two people of unequal mass are initially standing still on the ice with negligible friction. They then simultaneously push each other horizontally. Afterward, which of the following is true? * -The center of mass of the two person system moves in the direction of the less ...
*Monday, January 26, 2015 by Lexie*

**math**

Determine if each system has one, two, or no solutions. (Show your work - 3 marks each) a)y=2x^2-2x+1 and y=3x-5 b)y=x^2+3x-16 and y=-x^2-8x-18
*Monday, January 26, 2015 by Alex*

**math**

Determine if each system has one, two, or no solutions. (Show your work - 3 marks each) a)y=2x^2-2x+1 and y=3x-5 b)y=x^2+3x-16 and y=-x^2-8x-18
*Monday, January 26, 2015 by Alex*

**Algebra I**

Write and solve a system of equations to solve the problem. At a film festival, Film A is 4 times as long as Film B. Together, the films are 160 min long. How long is each film?
*Monday, January 26, 2015 by Anonymous*

**algebra**

Write and solve a system of equations to solve the problem. At a film festival, Film A is 4 times as long as Film B. Together, the films are 160 min long. How long is each film?
*Sunday, January 25, 2015 by nae*

**Algebra 1**

Seiji and Gavin both worked hard over the summer. Together, they earned a total of $425. Gavin earned $25 more than Seiji. Hoe much did each of them earn? A. Write a system of two equations to model this program. I got 1 equation down, i just cant figure out the second
*Friday, January 23, 2015 by Sean*

**S.S**

Whose mill launched the factory system? A. James Monroe B. Eli Whitney C. Samuell Slater D. Francis Cabot Lowell I think it's D.. am I right?
*Friday, January 23, 2015 by ash *

**math**

Solve the system of equations by elimination. (2 marks) y=2x^2-2x-3 y=-x^2-2x-3
*Friday, January 23, 2015 by Alex*

**Math**

Identify the solution(s) of the system of equations, if any. x + 5y = 7 4x - 5y = 13
*Friday, January 23, 2015 by Cathy*

**physics **

a 1kg object moving east with a velocity of 10 m/s collides with a .50kg object that is at rest. neglecting friction, what is the momentum of the system? please show work
*Thursday, January 22, 2015 by hussam ali*

**physics**

The system shown in the figure below consists of a mass M = 3.5-kg block resting on a frictionless horizontal ledge. This block is attached to a string that passes over a pulley, and the other end of the string is attached to a hanging m = 2.2-kg block. The pulley is a uniform...
*Thursday, January 22, 2015 by Johnathan*

**math**

Solve the system of equations by elimination. (2 marks) y=2x^2-2x-3 y=-x^2-2x-3
*Thursday, January 22, 2015 by Alex*

**physics**

A string that passes over a pulley has a 0.375 kg mass attached to one end and a 0.630 kg mass attached to the other end. The pulley, which is a disk of radius 9.50 cm, has friction in its axle. What is the magnitude of the frictional torque that must be exerted by the axle if...
*Wednesday, January 21, 2015 by Johnathan*

**Math **

Explain how to solve the following system of equations. What is the solution to the system? 2x+2y+z=-5 3x+4y+2z=0 x+3y+2z=1
*Wednesday, January 21, 2015 by Veronica*

**Science**

What is the principle role of a tower within a cellular system? (1 point) A.to track data usage*** B.to transmit signals C.to pinpoint locations D.to reduce line noise
*Wednesday, January 21, 2015 by jeje*

**Physic**

Hi, I'm learning about simple harmonic motion of a mass-spring system and I've been working at 2 problems for the past hour. I believe I have the right formula and I know what the answers should be but Im getting a different answer. Can you explain it step to step to ...
*Tuesday, January 20, 2015 by Elizabeth*

**Algebra**

Solve this system of linear equations. * Used the substitution method 3x - y = 8 4x - y = -15 ----------------------------------------- WORK y = 3x - 8 4x - (3x - 8 ) = -15 4x - 3x + 8 = -15 x + 8 = -15 x = -7 3x - y = 8 3(-7) - y = 8 -21 - y = 8 -y = 29 y = -29 The ...
*Tuesday, January 20, 2015 by Lucina*

**MATH**

what is the solution of the system y=-3x 3x+2y=6 a. 2, 6 b. -1, 3 c. -2, 6 d. 1.5, -4.5 I have an answer but I seriously doubt it's wrong. Please help for this one? Thanks
*Tuesday, January 20, 2015 by SkatingDJ*

**MATH**

What is the solution to the system 7x+5y=19 -7x-2y=-16 a.(2,1) b.(1,2) c.(7,5) d.(-7,-2) Is it a. or b.?
*Tuesday, January 20, 2015 by SkatingDJ*

**MATH**

For the following system of equations, what is the x-value of the solution? -x + 2y = 6 6y = x + 18 A. -18 B. 0 C. -6 D. 3 Confused? Still trying to work it out. Please help! Thanks
*Tuesday, January 20, 2015 by SkatingDJ*

**Civics**

A state has passed a law making it illegal for people to protest at the state capital building. You think this law is unconstitutional, but your state court system upholds it. What federal branch has the final say on whether your state law is unconstitutional? None of them ...
*Monday, January 19, 2015 by jeje*

**Civics**

"Every bill which shall have passed the House of Representatives and the senate, shall, before it became law, be presented to the president of the united states: If he approval he shall sign it, but if he shall not return it, with his objections to that house in which it ...
*Monday, January 19, 2015 by jeje*

**Civics**

"He has made Judges dependent on his will alone, for the tenure of their offices, and the amount and payment of their salaries" is one of the grievances listed in the Declaration of Independence? How does today's U.S government address this issue? by dividing the...
*Monday, January 19, 2015 by jeje*

**physics**

A 30.0 kg block falls from a height of 30,4 m. assuming a closed system its speed just before hitting the ground is about?
*Monday, January 19, 2015 by Cherri*

**physics**

A submarine dives 196.0 m at an angle of 18.0 ◦ below the horizontal. What is the horizontal component of the submarine’s displacement? Use the coordi- nate system where positive x is to the right and positive y is up. Answer in units of m.
*Monday, January 19, 2015 by allan*

**math**

Calculate the new coordinates of a block rotated about x axis by an angle of = 30 degrees. The original coordinates of the block are given relative to the global xyz axis system. A(1, 1, 2) B(2, I, 2) C(2, 2, 2) D(1, 2, 2) E(1, 1, 1) F(2, 1, 1) G(2, 2,1) 11(1, 2, 1).
*Monday, January 19, 2015 by Goms*

**Civics**

Which quotation(s) from the united states constitution provides for a federal; system of federal government? Statement I:- "The … Manner of Elections for Senators and Representatives shall be prescribed (will be decided by ) each state Legislatures; but the Congress ...
*Sunday, January 18, 2015 by jeje*

**History**

American System Congressman that proposed? Was it Henry Clay It was designed to make the nation _____________ not needing to trade with others to survive
*Saturday, January 17, 2015 by M*

**Health and Physical Education 8**

First of all, I'm not tryna suck up to get my question answered but i have to commend you people for taking your time to help others ON A SATURDAY! U guys r awesome. But anyways, my question: A main function of the skeletal system is to A.protect internal organs B.allow ...
*Saturday, January 17, 2015 by I am awesome*

**Algebra Help**

You are going to write a fairy tale! Your story should include all of the standard elements of fairy tales. Begins “Once upon a time … ” Animals can act like humans. Involves magical items or helpers. Ends “ … happily ever after.” Your story must ...
*Thursday, January 15, 2015 by Dina*

**Algebra**

You are going to write a fairy tale! Your story should include all of the standard elements of fairy tales. Begins “Once upon a time … ” Animals can act like humans. Involves magical items or helpers. Ends “ … happily ever after.” Your story must ...
*Thursday, January 15, 2015 by Dina*

**Math**

I have figured out x to be 2 for this system of equations but now I need help on determining the solution of the equations which are y=4x and y=2x^2. Can you please help me!
*Thursday, January 15, 2015 by Alex*

**physics **

Two geological field teams are working in a remote area. A global positioning system (GPS) tracker at their base camp shows the location of the first team as 43 km away, 23° north of west, and the second team as 29 km away, 33° east of north. When the first team uses ...
*Thursday, January 15, 2015 by S*

**math**

Solve the following system of equations: y=4x y=2x^2
*Wednesday, January 14, 2015 by Alex*

**math**

What are the solutions for the following system of equations? y=8x+7 y=-x^2-5x+7
*Wednesday, January 14, 2015 by Alex*

**Math**

Solve the following system of equations using both substitutio and elimination y=-x+4 y=-2x-4 Do I do what I do with the previous problems
*Wednesday, January 14, 2015 by M*

**MATH!!!! AHHH!!!**

Im studying for finals! A system of equations is shown below: 8x + 5y = 9 3x + 2y = 4 Part A: Create an equivalent system of equations by replacing one equation with the sum of that equation and a multiple of the other. Show the steps to do this. Part B: Show that the ...
*Wednesday, January 14, 2015 by Bella*

**astronomy**

a light year is a unit of distance most comparable to the distance from earth to what? nearest galaxy nearest star outer solar system
*Wednesday, January 14, 2015 by sam*

**Math**

5. A system of linear inequalities is shown below: x + y ≥ 4 y < 2x – 3 Describe the steps to graph the solution set to the system of inequalities. Be specific. (10 points)
*Wednesday, January 14, 2015 by Cookie_Monster_*

**algebra**

Translate to a system of equations but do not solve. One canned juice drink is 20% orange juice; another is 10% orange juice. How many liters of each should be mixed together in order to get 10L that is 13% orange juice? How many liters of the 20% orange juice should be in the...
*Tuesday, January 13, 2015 by slomomo*

**algebra**

One evening 1500 concert tickets were sold for the Fairmont Summer Jazz Festival. Tickets cost $25 for covered pavilion seats and $20 for lawn seats. Total receipts were $35,000. How many of each type of tickets were sold? Let x equal the number of pavilion seats sold. Let y ...
*Tuesday, January 13, 2015 by Anonymous*

**algebra**

solve the system of equations using the substitution method 8x - 9 = y y - 8x = -4
*Tuesday, January 13, 2015 by Anonymous*

**science**

Which systems move the human body? I heard there were the skeletal, nervous, and muscular system. ??
*Tuesday, January 13, 2015 by anonymous*

**algebra**

Solve the given system by the substitution method. 3x + y = 17 5x -2y = 10
*Tuesday, January 13, 2015 by Anonymous*

**algebra**

solve the system of equations using the substitution method 8x - 9 = y, y - 8x = 4
*Tuesday, January 13, 2015 by Anonymous*

**math**

San Diego left San Francisco on Tuesday at 6.30 p.m. and took 8 hours 45 minutes to reach his home. On what day and at what time in a 24 hour system did he reach home?
*Monday, January 12, 2015 by king*

**Math**

Brenda's School is selling tickets to a spring musical. On the first day of ticket sales the school sold 3 senior citizen tickets and 9 child tickets for a total of $75. The school took in $67 on the second day by selling 8 senior citizen tickets and 5 child tickets Set up...
*Monday, January 12, 2015 by M*

**Maths**

a missile guidance system has five fail-safe components. the probability of each failing is 0.05. find these probabilities. a) Exactly 2 will fail b) More than 2 will fail c) All will fail. d) Compare the answer for parts a, b, c, and explain why these results are reasonable
*Monday, January 12, 2015 by saima*

**Health **

the muscular system is essential because it allows our bones to
*Monday, January 12, 2015 by Elizabeth*

**Algebra **

The Badys and their maid, Alice, took a trip to Hawaii for their summer vacation. The travel agent told Ike that the trip would cost $210 for each child plus another $315 per adult. According to Ike Bady’s credit card receipt, the trip cost a total of $2205 for all 9 of ...
*Monday, January 12, 2015 by Anonymous*

**Human Resource Information System**

Scenario: Castle’s Family Restaurant has eight restaurants in the northern California area with approximately 300–340 employees. Most of the employees are part time, with approximately 40% of them full time. The operations manager, Jay Morgan, also acts as the HR ...
*Sunday, January 11, 2015 by Kathy*

**Algebra Help Please**

solve the system of equations using the substitution method 8x - 9 = y y - 8x = 4
*Sunday, January 11, 2015 by slomo*

**Algebra Help!!**

Solve the given system by the substitution method. 3x + y = 17 5x -2y = 10
*Sunday, January 11, 2015 by slomo*

**Algebra help please!**

solve each system graphically. if a system has an infinite number of solutions, use set-builder notation to write the solution set. If a system has no solution, state this. y = 2 - x 2x + 2y = 4
*Sunday, January 11, 2015 by slomo*

**Algebra 1**

solve the system of equations using the substitution method. 8x-9=y, y-8x=-4
*Sunday, January 11, 2015 by slomo*

**Algebra 2**

Solve the system algebraically 2x^2-5y^2=1 x^2+5y^2=68 Please show work!!!
*Sunday, January 11, 2015 by Alicia*

**Algebra 1**

Where would the system below intersect on a graph? y=12x+15 y=15x I know that: x=5 y=75 But I need help on how to graph it.
*Friday, January 9, 2015 by Allie*

**Math**

1. Using the following system of equations : 4x +2x = 6 2x + y= 3 A: Find the solution(s) algebraically showing all work (4 pts) B: State whether it is independent consistent, dependent consistent, or inconsistent. (2pts) C: Demonstrate how to check the systems of solutions, ...
*Friday, January 9, 2015 by Cookie_Monster_*

**Algebra 1**

Translate to a system of equations. But do not solve. A nontoxic floor wax can be made from lemon juice and food-grade linseed oil. The amount of oil should be twice the amount of lemon juice. How much of each ingredient is needed to make 45 ounces of floor wax? Let x ...
*Thursday, January 8, 2015 by slomo*

**Algebra**

Solve each system graphically. Be sure to check your solution.If a system has an infinite number of solutions, use set-builder notation to write the solution set.If a system has no solution, state this. 2x - y = 1 x + 2y = 3
*Thursday, January 8, 2015 by slomo*

**Algebra 1**

Solve each system graphically. Be sure to check your solution. If a system has an infinite number of solutions, use set-builder notation to write the solution set.If a system has no solution, state this. I tried this and found no solution, is this right? x + y = 9 x - y = 1
*Thursday, January 8, 2015 by slomo*

**Pre-Calc/Trig**

Complete the following for each system that involves one or more quadratic equations: Solve the system algebraically 7y^2-5x^2+20x=3 5x^2+21y^2=209
*Thursday, January 8, 2015 by Anonymous*

**physics**

A heavy table of mass M is vibrationally isolated by being hung from the ceiling by springs, so that its frequency of vertical oscillation is \omega_0 (take \omega_0 to be 2\pi/sec, a typical value). Assume now that the ceiling vibrates vertically with amplitude A at frequency...
*Thursday, January 8, 2015 by david*

**criminology**

What type of discretion might be exercised within the local police department? How does it "funnel" people into the criminal justice system or kick them out?
*Thursday, January 8, 2015 by Dee365*

**Algebra**

Determine if the ordered pair ( -5,2) is a solution to the following system of equations. x + 3y = 1 y = 3x + 17
*Wednesday, January 7, 2015 by slomo*

**mechanics and heat**

At the same instant that a 0.5 kg ball is dropped from 25 m above earth , a second ball , with a mass of 0.25 kg , is thrown straight upward from earth’s surface with an initial speed of 15 m/s . They move along nearby lines and pass without colliding. What is the ...
*Wednesday, January 7, 2015 by awash*

**mechanics and heat**

Four point masses are located at the four corners of a rectangle as shown in the figure. Calculate the total moment of inertia of this system measured from (a) axis 1 (b) axis 2 (c) axis 3, and (d) an axis that passes through A and perpendicular to the plane containing this ...
*Wednesday, January 7, 2015 by awash*

**Science**

1. Name the components of the respiratory system in the order incoming air would encounter them during breathing. trachea, pharynx, larynx, alveoli, bronchi bronchi, larynx, alveoli, trachea, pharynx larynx, trachea, bronchi, pharynx, alveoli pharynx, larynx, trachea, bronchi...
*Wednesday, January 7, 2015 by lol*

**phy**

A 10kg mass and a 2.0kg mass are connected by a light string over a massless, frictionless pulley. if g=9.8ms^-2, what is the acceleration of the system when released? (98ms^-2)
*Wednesday, January 7, 2015 by saima*

**Algebra**

I have been trying to solve this for two hours help. Determine whether the ordered pair (-5,2) is a solution of the following system of equations x - 3y = 1 y= 3x - 17
*Wednesday, January 7, 2015 by slomo*

**Algebra**

I can find no solution to this system of equations. Solve the system of equations using the substitution method 2x + 4y = -2 2x - y = 4
*Wednesday, January 7, 2015 by slomo*

**physics**

Two blocks are placed at the ends of a horizontal massless board, as in the drawing. The board is kept from rotating and rests on a support that serves as an axis of rotation. The block on the right has a mass of 5.4 kg. Determine the magnitude of the angular acceleration when...
*Tuesday, January 6, 2015 by genius girl *

**Civics**

Montesquieu's system of "separation of powers" means that Government is divided into three branches*** People are born with rights that can not be taken away. government may rule because the citizens consent people have the right to life,liberty, and property.
*Tuesday, January 6, 2015 by jeje*

**Civics**

Why did the framers of the constitution include the system of checks and balances? To ensure the powers of each branch of government are limited and checked by another branch To create a process for the American people to choose their representatives for government branches To...
*Tuesday, January 6, 2015 by jeje*

**Health**

Which of the following is the minimum level of structure needed to perform the function of waste removal? A. body system B. tissue C. cell D. organ C or A
*Tuesday, January 6, 2015 by dddd*

**Math**

Q. There is a hot hair ballon festival in System Springs. Seventy two gallons registered to participate,paying $25 each. Five of those who registered didn't show up and we refunded half of their money.mthree additional balloons showed up and paid the registration cost plus...
*Monday, January 5, 2015 by Destinee*

**Algebra**

system of equations, the sum of two numbers is 46. the first number is 3/20 of the second number is it x + y = 46, x = 3/20y?
*Monday, January 5, 2015 by slomo*

**algebra 1**

Which of the following points are solutions to the system of inequalities shown below? Check all that apply. y>4x + 2 y<4x + 5 A. (4, 21) B. (5, 24) C. (5, 26) D. (-4, 20)
*Monday, January 5, 2015 by jacky*

**History **

1. How is the Seven Years War related to the French and indian war? A- The French and Indian War directly caused the Seven Year's War B-; The French and Indian War was part of the Seven Year's War C- The Seven Years' War was more of a land war than the French and ...
*Sunday, January 4, 2015 by Elizabeth Meyer *