1. College physcial science

    A force of 200 N is needed to push a tabble across a level classroom floor for a distance of 3 m. How much work was done on the table?

    asked by Tiki on April 25, 2009
  2. Math

    5x{(24-19)x {(25+23)/12-(9-7)} 48 / 12 4 - (2) 5x (5) x (2) 25 x 2 = 50 Did I work this correctly? Please Help!! It doesn't come across real clear as to what the original equation was. Did you use the Orders of Operations (PEMDAS) when you solved it?

    asked by Algebra--Please Help on February 15, 2007
  3. Physics

    How much work is done by a boy weighing 450. Newtons while carrying a 20.0 kilogram package up a 2.00 meter flight of stairs?

    asked by Vanessa on January 2, 2011
  4. Math

    Find the equation for the exponential function that passes through the pairs of points given. Through (-1,2) and (3,1). I don't know if this is the right way to work this or what the next step is i am just very confused. Please help, thank you! y=Ab^x

    asked by Student on September 12, 2014
  5. SOCIOLOGY

    WHAT ASPECTS OF THE SOCIAL AND WORK ENVIROMENT IN A FAST-FOOD RESTAURANT WOULD BE OF PARTICULAR INTEREST TO A SOCIOLOGIST BECAUSE OF HIS OR HER SOCIOLOGICAL IMAGINATION?

    asked by RENE on September 1, 2010
  6. college

    what aspects of the social and work environment in a fast-food restaurant would be of particular interest to a sociologist because of his or her sociological imagination?

    asked by Bevyette on June 13, 2010
  7. Human resources

    Analyze how emotional and physical aspects of a person’s life can influence the employee’s effectiveness in the work environment.

    asked by Nadia on October 4, 2008
  8. Opra college

    Chemistry work........the volume of oxygen measured at stp will br produced on heating 24.5grams of potassium trioxochlorate(v)

    asked by Pelumi on August 6, 2015
  9. Gen chem 2

    calculate the work performed if a balloon contracts from11.75 L to 806 mL due to an external pressure of 3.9 atm.

    asked by Stacey on November 6, 2013
  10. Physics

    The work done in rubbing your hands together s equivalent to the amoun of heat produced. What principle does this demonstrate? I am not sure, is it kinetic energy?

    asked by jessica on January 27, 2010
  11. MATH

    NEED HELP WITH SUMMATION NOTATIONS TOP NUMBERIS 6 OVER A SIDEWAYS Z BOTTOM NUMBER IS A N=2 THAN THERE IS (2N-1) NEED TO KNOW HOW TO WORK THIS PROBLEM. i AM TRYING TO HELP MY SON WITH HIS HOMEWORK

    asked by MELISSA on April 19, 2009
  12. 7th grade math

    My friend is in the 7th grade and broke his wrist so he cannot type. Wat is the square root of pi.He said he knows pi=3.14 but he doesn't know how to work it out. He said thanks.

    asked by running.from.myself on March 5, 2012
  13. sociology

    what aspect of the social and work environment in a fast food restaurant would be of particular interest to a sociologist because of his or her sociological imagination

    asked by Anonymous on August 31, 2010
  14. chemistry

    I work in a pathology lab and need to know what happens when formaldehyde is mixed with chlorine bleach...the chemical formula would be: H2C(OH)2 + NaClO Can anybody out there help me, please?

    asked by fishies on February 23, 2009
  15. Physcis(Please help)

    A pilot flies her route in two straight-line segments. The displacement vector A for the first segment has a magnitude of 254 km and a direction 30.0o north of east. The displacement vector for the second segment has a magnitude of 178 km and a direction

    asked by Hannah on May 27, 2012
  16. physics

    I am studying for a physics exam and this is the pretest. There are some that I don't understand. If someone could help me get to the answer (show all the work so I can look it all over) that would be AMAZING! Thank you very much! 2. A roller coaster,

    asked by Karrine on October 21, 2012
  17. Microeconomics

    Correcting for negative externalities - Regulation versus tradablepermits Suppose the government wants to reduce the total pollution emitted by three local firms. Currently, each firm is creating 4 units of pollution in the area, for a total of 12

    asked by Jill on May 29, 2014
  18. Chemistry

    a) A current of 1.50 Amperes passes through a solution of AgNO3 for 3.0 hours. What mass, in grams, of silver collects on the cathode? (molar mass of silver = 107.9 g/mol) b) How many seconds would it take to collect 100 g of silver to collect on the

    asked by Morgan on March 5, 2015
  19. Chemistry help

    The vapor pressure of an organic solvent is 50 mm Hg at 25°C and 200 mm Hg at 45°C. The solvent is the only species in a closed flask at 35°C and is present in both liquid and vapor states. the system pressure is 760mmHg. Determine the mole fraction of

    asked by Anonymous on February 13, 2011
  20. chem please help

    What is Gibbs free energy? A. The energy lost as heat to the surrounding molecules B. The usable energy released or absorbed by a reaction C. The energy in the form of kinetic energy in a system D. The energy contained within the bonds of molecules Do not

    asked by Morgan on November 26, 2014
  21. Physics

    A 9.5-kg watermelon and a 7.2-kg pumpkin are attached to each other via a cord that wraps over a pulley, as shown. Friction is negligible everywhere in this system. Pumpkin is at left of angle n is 53 degrees and watermelon is on right and at 30 degrees

    asked by Anonymous on February 12, 2012
  22. Physics

    A 9.5-kg watermelon and a 7.2-kg pumpkin are attached to each other via a cord that wraps over a pulley, as shown. Friction is negligible everywhere in this system. Pumpkin is at left of angle n is 53 degrees and watermelon is on right and at 30 degrees

    asked by Anonymous on February 12, 2012
  23. Physics

    The Atwood Machine consists of two masses suspended form a fixed pulley. If the first mass is 0.55kg and 0.8kg, (a) what is the acceleration of the system? (b) What is the magnitude of the tension in the string? (consider the pulley to be frictionless and

    asked by Raphael Grenfell on April 20, 2016
  24. PHYSICS

    On a horizontal frictionless table, masses A and B (3 kg, 6 kg) slide to the right and left, respectively. They have speeds of 3 m/s and 1 m/s, respectively. The two masses collide, and bounce off each other. After the collision, they travel in opposite

    asked by kelsey on October 15, 2008
  25. English

    1 The lack of a ___ system of measurement is an international problem. scanty, uniform, transient, instantaneous 2. Almost ____ communication kept the President up-to-the-minute with events at the conference. exponential, transient, instantaneous,

    asked by Hayley on August 21, 2013
  26. PHYSICSSS PLEASE HELP ANYONE

    A 9.5-kg watermelon and a 7.2-kg pumpkin are attached to each other via a cord that wraps over a pulley, as shown. Friction is negligible everywhere in this system. Pumpkin is at left of angle n is 53 degrees and watermelon is on right and at 30 degrees

    asked by Anonymous on February 12, 2012
  27. chemistry

    The vapor pressure of an organic solvent is 50 mm Hg at 25°C and 200 mm Hg at 45°C. The solvent is the only species in a closed flask at 35°C and is present in both liquid and vapor states. the system pressure is 760mmHg. Determine the mole fraction of

    asked by Anonymous on February 9, 2011
  28. Physics

    A 9.5-kg watermelon and a 7.2-kg pumpkin are attached to each other via a cord that wraps over a pulley, as shown. Friction is negligible everywhere in this system. Pumpkin is at left of angle n is 53 degrees and watermelon is on right and at 30 degrees

    asked by Anonymous on February 12, 2012
  29. chemistry

    If the system below is at equilibrium in a closed vessel and a small amount of nitrous acid [HNO2(§¤)] is added, what would be expected to happen? HN3(§¤) + 2 H2O(§¤) + heat N2H4(§¤) + HNO2(§¤) hydrazoic hydrazine nitrous acid acid

    asked by jackie on November 23, 2010
  30. PHYSICS

    A 9.5-kg watermelon and a 7.2-kg pumpkin are attached to each other via a cord that wraps over a pulley, as shown. Friction is negligible everywhere in this system. Pumpkin is at left of angle n is 53 degrees and watermelon is on right and at 30 degrees

    asked by Anonymous on February 12, 2012
  31. PHYSICS IS THERE ANYONE WHO WUD HELP PLEASE

    A 9.5-kg watermelon and a 7.2-kg pumpkin are attached to each other via a cord that wraps over a pulley, as shown. Friction is negligible everywhere in this system. Pumpkin is at left of angle n is 53 degrees and watermelon is on right and at 30 degrees

    asked by Anonymous on February 12, 2012
  32. algebra

    Graph the system of inequalities x (lesser or equal to sign)2 y (greater or equal to sign)-2x+4 I am having trouble understanding what points to plot on the graph and also how the graph should be shaded (if at all).

    asked by C on May 26, 2008
  33. math

    how do you calculate metric surfaces? not sure what you mean. are you finding areas of surfaces that have metric units? are you converting between units of area in the metric system? give a specific example or problem.

    asked by rachel on May 18, 2007
  34. Chemistry

    consider the equation for the following reaction at equilibrium. X+Y2Z+heat the concentration of the product could be increased by 1.adding a catalyst 2.adding more heat to the system 3.increasing the concentration of Y 4.decreasing the concentration of X

    asked by Jazmin F. on March 9, 2011
  35. author

    1. A classic is a literary work a. that is at least 50 years old b. has been commonly recognized as a superior work c. that nobody understands ot likes 2. The write O. Henry is known for his a. endings with an ironic teist b. humor c. stories about the

    asked by even on December 16, 2011
  36. LAN networking

    Your company is a medium-size firm and leases two buildings. The two buildings are 800 meters apart. Each building has a 100BaseT Ethernet network. Required result: ¡ Connect the two separate networks. Optional result: ¡ The network needs to support

    asked by jim jones on November 20, 2009
  37. Chemistry - Explain...

    Hello! I'm hoping you can please help me with this! I left my book at school (I thought I'd left it in my backpack all day to bring home), and I'm in desperate need of your help because I have a test tomorrow. "Answer the following questions, which refer

    asked by Rachel on November 28, 2006
  38. English

    please check this for me thanks this my draft now I think that I can turn in more than one draft but do you really do that. There are on- going problems that need to be addressed at the DMD company. First there is uneven allocation of tasks. While Bonnie

    asked by Kaleigh-Anne on June 21, 2008
  39. Algebra

    How many real number solutions does the equation have? y=-4x^2+7x-8 A. no solutions B. one solution C. two solutions D. infinitely many solutions I think it is C..? How many real number solutions does the equation have? y=2x^2-20x+50 A. no solutions B. one

    asked by Cassie on March 11, 2014
  40. Chemistry

    Calculate the pH after 0.14 mole of NaOH is added to 1.07 L of a solution that is 0.54 M HF and 1.15 M NaF, and calculate the pH after 0.28 mole of HCl is added to 1.07 L of the same solution of HF and NaF. 0.14 mole of NaOH 0.28 mole of HCl

    asked by Margaret on March 13, 2013
  41. statistic

    In a survey, 3 of 4 students said the courts show "too much concern" for criminals. Find the probability that at most 3 out of 7 randomly selected students will agree with this statement. Round your answer to the nearest thousandth.

    asked by miyah on October 22, 2017
  42. Math (Calculus AB)

    For x≠0, the slope of the tangent to y=xcosx equals zero whenever: (a) tanx=-x (b) tanx=1/x (c) sinx=x (d) cosx=x Please help. I have a final tomorrow and I am working diligently to understand every type of problem that may show up on my test. Thank you

    asked by Jake on January 24, 2011
  43. economics

    Give a numerical example to show that a monopolist's marginal revenue can be upward-sloping over part of its range. Hint: The price on the demand curve is the producer's average revenue

    asked by dee dee on April 29, 2012
  44. chemistry

    Which chemical equation is balanced to show that mass is conserved during the reaction? A. Na + Cl₂ --> NaCl B. 2H₂ O₂ --> 2H O + O₂ C. CH₄ + O₂ --> CO₂ + 2H₂ O D. AgNO₃ + MgCl₂ --> AgCl +MgNO₃ Please Help!!!

    asked by Avery on February 5, 2018
  45. economics

    Give a numerical example to show that a monopolist's marginal revenue can be upward-sloping over part of its range. Hint: The price on the demand curve is the producer's average revenue

    asked by dee dee on April 29, 2012
  46. year 8 RE - re teachers

    Please could someone help me with my re homework. i need to write an essay.this is the question:- Show how religious beliefs and practices may be connected to the needs and concerns of people living at different times and in different situations. Please

    asked by Kerrie on March 16, 2009
  47. English

    Choose the answer that best matches the word bravado. Sometimes small dogs show more bravado than the larger breeds; they may need to in order to be noticed. a. boldness*** b. fear c. perseverance d. stamina

    asked by Kaai97 on January 19, 2016
  48. math helllppppp

    Which best describes box and whisker plots? A. they are divided into sections using quartiles and extremes B. they are created by first writing a data set in order from least to greatest C. they show how data are spread out D. all of the above***

    asked by Abigail on August 22, 2017
  49. Math (Calculus AB)

    For x≠0, the slope of the tangent to y=xcosx equals zero whenever: (a) tanx=-x (b) tanx=1/x (c) sinx=x (d) cosx=x Please help. I have a final tomorrow and I am working diligently to understand every type of problem that may show up on my test. Thank you

    asked by Jake on January 24, 2011
  50. math

    a clipboard costs $2.23. It costs $0.58 more than a notebooh. Lisa buys two clipboards and one notebook and paid with a ten dollar bill. use a tape diagram with calculations to show her change.

    asked by Peanut on March 3, 2014
  51. physics

    A cylindrical conductor of radius carries a uniformly distributed current I. Show that the magnetic field within the conductor measured at a distance r from the center is given by the following equation... B= (u0Ir)/2pi a^2

    asked by John on April 12, 2014
  52. math

    trigonometric functions/ radians the angle Ə is in the first quadrant, and cos Ə = 2/√5 a) draw a diagram to show the angle in standard position and a point P on its terminal arm b) determine possible coordinates for P

    asked by s on November 30, 2008
  53. Science Help ASAP

    Which chemical equation is balanced to show that mass is conserved during the reaction? A. Na + Cl₂ --> NaCl B. 2H₂ O₂ --> 2H O + O₂ C. CH₄ + O₂ --> CO₂ + 2H₂ O D. AgNO₃ + MgCl₂ --> AgCl +MgNO₃ Please Help!!!

    asked by gigi on February 5, 2018
  54. Chemistry

    4.0 g of ferrous ammonium sulphate, FeS04(NH4)2 SO4 6H20, is used. The oxalate is in excess, calculate the theoretical yield of the iron complex. Can someone please show me how to calculate a question like this please? Thank you

    asked by rasuka_geo on November 2, 2009
  55. Math

    A shipping box shaped like a rectangular prism has a height of 6ft and a volume of 96ft3, what is the length and width of the base for the box? Show the description whit a grid.

    asked by Joe on January 23, 2017
  56. math

    1) 67÷939 2) 1,208 times 305 (Show steps) 3) Determine the number represented by the scrambled place values. 7 hundreds 4 ten thousands 9 ones 8 tens 6 thousands

    asked by scooby91320002 on July 10, 2009
  57. Physics

    A 980-N painter stands on a uniform 230-N board supported by 2 wooden poles as shown below. If the poles can hold only 800-N will it be safe for him to stand on the position show?

    asked by Angelique on June 27, 2012
  58. science

    Which chemical equation is balanced to show that mass is conserved during the reaction? A. Na + Cl₂ --> NaCl B. 2H₂ O₂ --> 2H O + O₂ C. CH₄ + O₂ --> CO₂ + 2H₂ O D. AgNO₃ + MgCl₂ --> AgCl +MgNO₃ **** is it D?

    asked by help once more... on February 13, 2019
  59. science

    A panic-prone person who ingests a(n) __________ would be expected to show increased anxiety. A. benzodiazepine agonist B. tricyclic antidepressant C. MAO inhibitor D. benzodiazepine antagonist is it A

    asked by Jane on April 13, 2015
  60. geomotry

    the quadrilateral named in parts a through d are parallelograms formed on the diagram at the right.give the coordinates for the fourth vertex.then calculate the slopes of the sides to show that the oppisite sides are parallel. how do you do that

    asked by bre on January 9, 2008
  61. Science (Bonding)

    Can someone show me how to draw a dot and cross diagram for kf, showing only the outer electron shells. I remember doing it and school and learning that it was a ionic bond if i remember correctly. Thankyou.

    asked by paul on October 13, 2010
  62. Physics

    A helicopter is ascending vertically with a speed of 5.20 m/s. AT the height of 125m above the earth, a package is dropped from a window.How much time does it take for the package to reach the ground. ****Note: Please show the steps.

    asked by Bunty on September 15, 2007
  63. Statistics

    male heights are normaly distributed with a mean of 70 and a standard deviation of 2.8 inches. for two randomly selected guys, what's the probability that both of them are 67 inches or shorter? show calculations. Can someone please help me quickly with

    asked by Heather on November 8, 2012
  64. chemistry

    For the reaction 2 Na + 2 H2O -------> 2 NaOH + H2, how many grams of hydrogen gas are produced when 133.6 g of water are reacted? I tired it like the steps to the last one and I still got answer wrong can you please show steps you would perform?

    asked by Kalli Simpson on May 17, 2014
  65. physics

    a charge Q is distributed uniformly along a line segment bent into a semi circle of radius X.show that the field at the center of the circle is given by E=Exi+Eyj=Q/2π2ε˳̻R2

    asked by niyom on June 14, 2016
  66. Sci

    What are the 5 signs that show a chemical change has taken place? I wrote: - theres a smell of ordur - change in color - fizzing or bubbling - percipitate forms - difficult to reverse Could you name a couple more please and tell me if those are right.

    asked by Lena on September 3, 2008
  67. physics

    A car travels along a straight stretch of road. It proceeds for 14 mi at 50 mi/h, then 28.3 mi at 48 mi/h, and finally 37.4 mi at 38.3 mi/h. What is the car’s average velocity during the entire trip? Answer in units of mi/h Can u show me the steps to

    asked by anon on September 26, 2011
  68. College Chemistry

    Stuck on plugging info into formula, please show set up-At 10 degrees C carbon dioide gas has volume of 25.5 mL under pressure of 758 mmHg, what would volume of CO2 be at STP?

    asked by Sandra on November 9, 2010
  69. MATHS

    experiments show that radium disintegrates at a rate proportional to the amount of radium present at the moment . if half life is 1590 years what percentage will disappear in one year?

    asked by NOEL on September 26, 2014
  70. educational and tecnology

    Which of the following is a benefit that education simulations do Not provide? A(they use real object that can be physically touched B( They allow you to manipulate the object by turning them virtually C( they use 3-D movement and objects D( they can show

    asked by Anonymous on January 19, 2016
  71. Chemistry

    what volume of 0.120 M NaOH must be added to 100 ml of 0.100 M NaHC2O4 to reach ph of 4.70? H2C2O4 Ka1 = 5.9 x 10-2 HC2O4^- Ka2 = 5.1 x 10-5 The answer is 60 ml but I don't know how to find it. Can you please show me the steps and how to do it please

    asked by Steve on February 19, 2016
  72. ashford university

    Use two commas around “extra information” in a sentence to show that it is not important to the meaning of that sentence if taken out. For example: “The hardware store down the street, which had been paved recently, is open until midnight five days a

    asked by Heather on May 17, 2013
  73. chemistry

    the reaction of aluminum metal (Al) with oxygen (O2) forms Al2O3. What is a balanced equation for this redox reaction. What are two half reactions to show how many electrons are gained or lost by each species?

    asked by cathy on April 11, 2010
  74. Calculus

    Suppose that f (x) is a function such that the relationship given below is true. f (3 + h) - f (3) = 9h^2 + 8h (a) What is f '(3)? (b) What is the slope of the secant line through (3, f (3)) and (7, f (7))? Please do not use shortcuts(from future chapters)

    asked by catherine on September 14, 2010
  75. Physics

    Show that the escape speed n for a body located on the surface of a planet of radius r and mass M is given by the expression v = sqrt( (2* G * M)/r) now im using (K+Ug)i = (K+Ug)k where Kf = 0 because final velocity is zero and Ugf = 0 because its final

    asked by Oisin on July 26, 2010
  76. math

    A deep-sea diver descends below the surface of the water at a rate of 60 feet each minute. What is the depth of the diver after 10 minutes? Write a number sentence to show your answer.

    asked by judith on October 21, 2015
  77. Biology

    For a project, I have to make a food example of Smooth ER. My idea is a cake, frosted with fruit rollup as the smooth er, but that doesn't really show the funciton. (For example, jello shows the function of cytoplasm)

    asked by Anonymous on October 25, 2008
  78. chemistry step by step for me thank a lot

    What is the weight of ca(oh)2 required for 10 litre of water remove temporary hardness of 100 ppm due to ca(H03)2 The answer 0.74 Thank all tutors for your help Pls show step by step for me

    asked by ken on July 6, 2014
  79. physics

    A string of 8 christmas tree lights connected in series to a 120v source draws a current of 0.75A.can any one show me how to find the resistance of each lights and potential differnces.

    asked by Alemu on January 4, 2010
  80. Physics

    i have just started physics, can someone please show me step by step how to do this: The radius of Earth is 6 370 000 m. Express this measurement in km in scientific notation with the correct number of significant digits. thank you for your help

    asked by y912f on January 28, 2009
  81. sociology

    Studies show that people from higher socioeconomic backgrounds tend to live longer and report feeling healthier than people from the lower classes. What are some explanations for this phenomenon? please help

    asked by Kevin on July 28, 2015
  82. Social Studies

    What did Johnson want to accomplish in his Great Society Plan? Who did Jonson name to serve in the Supreme Court? How was Lyndon B. Johnson honored after he served our country? How did he show diligence in his life?

    asked by Yan on March 25, 2009
  83. Physics

    Standing at the edge of a cliff 240 m tall, you throw two balls into the air – one directly upwards at 5 m/s and another directly downwards at -5 m/s. Use conservation of energy to show that they will have the same final speed at the bottom.

    asked by Scoop on October 17, 2012
  84. english

    this is the assignment can you tell me if i covered what was needed of the assignment? Write two paragraphs, with a total minimum word count of 350 words, explaining what your point of view will be and what you plan to accomplish in your paper. My point of

    asked by rene on December 4, 2010
  85. algebra

    Can someone please help me with the following?: Factor each expression completely: x²-x-72 3x²-3x-168 Here is the way I have found to do these. First, make a couple of sets of parentheses. ( )( ) We put in the first letter. From X2 we can get ONLY X and

    asked by Matilda on November 22, 2006
  86. VERY URGENT, HELP!

    Consider a simple economy consisting of only four firms. Firm A, a mining enterprise, extracts iron ore. Firm B, a Steelmaker, produces steel sheets. Firm C, a carmaker, makes automobile while Firm D produces automobile tires. In 2016, firm A extracts

    asked by Linda on October 7, 2016
  87. Econ URGENT HELP!

    Consider a simple economy consisting of only four firms. Firm A, a mining enterprise, extracts iron ore. Firm B, a Steelmaker, produces steel sheets. Firm C, a carmaker, makes automobile while Firm D produces automobile tires. In 2016, firm A extracts

    asked by Linda on October 7, 2016
  88. Econ VERY URGENT, HELP!

    Consider a simple economy consisting of only four firms. Firm A, a mining enterprise, extracts iron ore. Firm B, a Steelmaker, produces steel sheets. Firm C, a carmaker, makes automobile while Firm D produces automobile tires. In 2016, firm A extracts

    asked by Linda on October 7, 2016
  89. Chemistry -Please Help

    2. What is the reduction half-reaction for the following unbalanced redox equation? Cr2O7^2– + NH4^+ Cr2O3 + N2 A.) Cr2O3 -> Cr2O7^2– B.) Cr2O7^2– -> Cr2O3 C.) NH4^+ -> N2 D.) N2 -> NH4^+ I think it is B...? 3. Which oxidation-reduction reactions are

    asked by cassie on March 22, 2013
  90. Geography

    52. Discuss the process known as the "Four Modernizations" and how the attitude of the Chinese leaders in this area contrasted with response to rise of democratic protests. After Mao Zedong died in 1976, a power struggle followed that pitted the Gang of

    asked by y912f on April 16, 2010
  91. math

    how do you convert miles to feet in the u.s.customary system? a.multiply by 12 b.divide by 12 c.multiply by 5,280 d.divide by 5,280

    asked by babyc36 on June 15, 2013
  92. Math

    A sprinkler system is designed to water 5/9 acre of land in 1/3 hour. How many acres of land can it water in 1 hour?

    asked by Jess on December 1, 2015
  93. Biology

    The integumentary system includes • skin only** • hair only • nails only • skin, hair, and nails Is my answer correct? the **

    asked by Sandra on March 22, 2014
  94. Biology

    In human digestive system liver is called chemical factory in the body .Why is it called chemical factory..

    asked by Menejap Ganemo on May 22, 2019
  95. Algebra 1

    4 pencils and 5 pens cost $2.00; 3 pencils and 4 pens cost $1.58. Write out a system of equations that would represent this situation.

    asked by Alex on April 18, 2014
  96. Technology

    21. You have learned that there are seven inputs common to all technological systems. List these inputs and give an example for each one. 21. There are seven inputs that are common to all technological systems. These include people, materials, tools

    asked by y912f on April 8, 2010
  97. physics

    the rubidium isotope 87Rb is a beta emitter with a half-life of 4.9E10 y that decays into 87Sr. It is used to determine the age of rocks and fossils. Rocks containing the fossils of early animals contain a ration of 87Sr to 87Rb of 0.090. Assuming that

    asked by Star on November 15, 2006
  98. Technology

    I need help with these two questions: 1. Sheet metal and copper piping are examples of a. natural resources b. industrial products c. consumer products d. standard materials I think it's either B or D 2. Which of the following would be considered part of a

    asked by y912f on December 31, 2009
  99. SCIENCE

    Southern California wastewater discharges have continued to increase in terms of the gallons of effluent released, however the amount of sewage components has been reduced because a. people are eating less greasy foods b. harmful materials are kept out of

    asked by Meg on May 16, 2007
  100. Accounting

    Identify whether each description best applies to a periodic or a perpetual inventory system. a. Provides more timely information to managers. b. Requires an adjusting entry to record inventory shrinkage. c. Markedly increased in frequency and popularity

    asked by Mar on April 11, 2012

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