1. science

    The only members of our solar system that do NOT periodically move around the sun are
  2. Math

    Solve the system using elimination. Express as ordered pair. 2x - 7y = 27 3x = 2y = 3
  3. Phsical Science

    Other than familiarity, what is the advantage of the English System of measurement?
  4. algebra

    System of equations, the addition method 3x-3y=6 3x+3y=0 Whats the answer?
  5. math

    (19) Does the following system of equations have a solution? If it does, find one; if not, explain why not. √ x + √ y = 1 r 4x 9 − r 25y 64 = 1
  6. 4th grade

    name the planets of the solar system in order from the sun out?
  7. Distributed Management System

    what is the crow's foot ERD of this problem?
  8. Help!!

    The public school system in Georgia was the result of laws passed during
  9. algebra 2

    how do u solve a system of linear equations in three variables? for example this problem Ex.1 2x-2y+z=3 5y-z=-31 x+3y+2z=-21
  10. Biology 20

    Which blood cell is able to reproduce inside the circulatory system and why?
  11. Algebra.. please help

    Please help. I have been trying to figure this problem out for an hour now. Solve the following system of equations. X + 8y = 5 (1) x=8-8y (2)
  12. math

    Solve the following system of equations. x+y=13 22x+36y=356
  13. math

    What is the solution of the system of equations? y=5/6x+1 −x+y=2 Enter your answer in the boxes.
  14. Algebra

    Solve the system by graphing. x+y=−2 y=13x+2 Thanks jiskha,com :)
  15. Religion

    what are the advantage of monarchy system that israel wanted to have "just like the other nations" ?
  16. maths

    use the inverse method to solve the system of linear equations -x +3y+2=1 2x+5y=3 3x+y-2z=-2
  17. Business Law

    What is the source of the federal court system's authority?
  18. economics

    Which economic system works best when there is a crisis of epic proportion?
  19. aviation

    How does the modern autopilot system work for commercial airliners?
  20. algebra 2

    to solve the system of equations which expression could be substituted for x into the first equation? first: 2x+7y=10 second: x-2y=15
  21. advanced algebra 2 - math

    graph the solution set of the system: y>3x+2, y<2/3x+5, y>-2/5x-3 1/5, y>-1
  22. Quick math help please!!!

    Can someone show me the right answer to this system? Because I got a decimal but I don't know if that's right! 1. -2x+7y=-19 9x+7y=-30
  23. social studies

    How do monopolies threaten the free enterprise system?
  24. world regional geography

    Which of the following is true of the Antarctic Treaty System?
  25. Math

    Can someone please help me with my open needed question Solve the system by substitution -X-y-z= -8 -4+4y+5z =7 2X+2z= 4
  26. science

    Describe how a scientist using the phenic system would classify an organism.
  27. algebra

    without graphing classify each system as independent, dependent, or inconsistent. -2x-y=9 3x-4y=-8
  28. easy chemistry

    what is the entropy of 10 molecules in a system of 100 boxes?
  29. Science

    The rocks which float in space within the solar system are called?
  30. health

    what are 9 parts of the female and male reproductive system that are either exactly the same of similar
  31. social studies

    how can we say that the democracy is the only best system of good governance for a country.
  32. Algebra

    2. What is the value of x in the solution to the system of equations below? 15x – 12y = 13 30x + 9y = 4
  33. social studies

    What was the main economic system in the middle ages
  34. algebra2

    classify each system and determine the number of solutions: 5x-y=-3 and 15x-3y=-9
  35. health

    What are the key anatomical parts of the cardiovascular system and how does it work.
  36. science

    UNSCRAMBLE RDOCRROUTINEDEVELOPMENT to make 2 words having to do with the reproductive system
  37. Algebra

    Explain how to use a graph to determine the number of solutions of a system?
  38. Math

    Find the solution to the system of equations by substitution. 2x+5y=8 and 6x+y=10 Would the answer be (1.5,1)?
  39. gr.10 math

    solve the linear system using substitution. please show me the steps!:) x-y=-5 2x-y=-7
  40. social studies

    In 1700"s under the federa system the final authority in is who
  41. social studies

    could you pl let me know the distinction between galaxy and milkyway in solar system
  42. infomation system

    is a videon great to infom peple about traveling?
  43. ap chemistry

    in which type of process does the H of a system decrease? endothermic or exothermic
  44. Math

    42. How many solutions does the system have? 3x + 12y = 20 y = –x + A.)one B.)two C.)infinite D.)none I'm not sure what the answer is, I am bad at these.
  45. biology

    explain how the hiv virus destroys the immune system.
  46. algebra ll

    To solve the system of equations, which expression could be substituted for x into the first equation? 3x-5y=14 x+4y=10 a)10-4y b)4y+10 c)(1/4)x+(5/2) d)(-1/4)x+(5/2)
  47. algebra

    Graph the solution set for the system of linear inequalities y<2x+3 and y>=2x-6
  48. Math

    If a point of a three-dimensional system is labeled with the coordinates (1, 2, -2) what is the Z coordinate? a. 1 b. -1 c. 2 d. -2 This one I am not sure but I think it is d.
  49. math

    how do i solve this linear system using substitution or elimination -16x+2y= -2 y=8x-1
  50. 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!!
  51. English

    1. For example, red is for Line 1, and green is for Line 2. (subway system) 2. For example, red is Line 1, and green is Line 2. (subway system) Which one is grammatical? Are both grammatical?
  52. 7th grade

    features that define the performance of a system are called what?
  53. health

    how would someone write a radio ad promoting a healthy musculoskeletal system?
  54. math

    Write the system of equations corresponding to the augmented matrix using the variables x, y, and z. 0 10 6 –5 3 8 – 9 7 – 5 0 – 3 –4
  55. Analytical CHM 300

    which rating system gives the analyst the most information?
  56. Psychology

    What country has the best system for dealing with mental health issues?

    in what ways did whitneys system improve products
  58. science acids

    how come bile from your digestive system is acid [how does this occur ] ? thanks 4 the help
  59. precalculus

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

    describe the characteristics of the ideal appraisal system.
  61. cjs200

    How would this affect the structure of the criminal justice system as we see it today?
  62. Related Rates

    Water is leaking out of an inverted conical tank at a rate of 500 cubic centimeters per min at the same time that water is being pumped into the tank at a constant rate. The tank has height 10 meters and the diameter at the top is 4.5 meters. If the water level is rising at a ...
  63. Chemistry

    You have a large amount of 8.00 M stock solution. You need 1.60 L of 3.00 M solution for an experiment. How would you prepare the desired solution without wasting any stock solution? A.) Start with 1.60 L of water. Add stock solution until you reach a total volume of 2.56 L . ...
  64. Business Finance

    Your firm is contemplating the purchase of a new $869,500 computer-based order entry system. The system will be depreciated straight-line to zero over its 5-year life. It will be worth $84,600 at the end of that time. You will be able to reduce working capital by $117,500 (...
  65. mixture problems

    How many gallons of 45% butterfat cream must be mixed with 500 gallons of 3% butterfat milk to obtain a 5% butterfat milk?
  66. Chemistry

    If a solution of sodium hydroxide is mixed from a 3M solution of sodium hydroxide, such that the volume of the original solution is 50ml and the volume of the final solution is 150ml, determine each of the following: a. The volume of water added to the solution b. The new ...
  67. science

    1. All of the following are parts of the retina except A. rods. C. fovea. B. cones. D. lens. 2. Which of the following are tests of the eye? A. Cephalgia, chondrodynia, sternotomy B. Myelography, photon absorptiometry, thermography C. Rheumatoid arthritis, muscular dystrophy, ...
  68. Philosophy

    The very large increase in allergies over the last thirty years is due to the great success of immunizations administered over this time period. Since immunizations have nearly eliminated life-threatening diseases such as polio, the human immune system increasingly targets ...
  69. Math

    A 19-liter mixture consists by volume of 1 part juice to 18 parts water. If x liters of juice and y liters of water are added to this mixture to make a 54-liter mixture consisting by volume of 1 part juice to 2 parts water, what is the value of x. I'm not sure, but would it be...
  70. Math

    A 19-liter mixture consists by volume of 1 part juice to 18 parts water. If x liters of juice and y liters of water are added to this mixture to make a 54-liter mixture consisting by volume of 1 part juice to 2 parts water, what is the value of x?
  71. math

    if 8 gallons of gasoline cost 11.20 how much would 10 gallons cost
  72. MMSS

    the volume of 500g sealed packet is 350 cubic centimeters. Will the packet float or sink in the water if the density of water is 1 gm per cubic meter ? What will be the mass of water displaced by this packet
  73. Physics , static fluids

    The density of ice is ρ(ice) = 920 kg/m3, and the average density of water is ρ(water) = 1.00 g/cm3. What fraction of the total volume of a block of ice is exposed when floating in water? what does this even mean?
  74. Physics

    A dam 143 m above a hydroelectric generator holds 1.6 x 1015 L of water. If the generator is taken to be at a height of 0 m, how much potential energy is stored in the dam?
  75. Math

    1) Solve: 8x ¨C (6x + 4) = 8 x = -2 2) -7x > 1/15 the solution set is: {x | x > -105} 3) Solve 5> -4x + 4 or 10 ¡Ü -4x +3 the solution to the inequality is: [-¡Þ, -7/4] U [-1/4,¡Þ] 4) Use < or > to make the statement true: -9 < 3 5) Graph the ...
  76. Algebra

    a chemist wants to mix a 22 acid solution with a 46% acid solution to get 32 gallons of 37% acid solution. How many gallons of the 22% acid solution and how many gallons of the 46% acid solution should be mixed?
  77. math

    The Thompson Company uses standard costing and has established the following direct material and direct labor standards for each unit of Lept. Direct materials: 2 gallons at $4 per gallon Direct labor: 0.5 hours at $8 per hour During September, the company made 6,000 Lepts and...
  78. math

    How many ounces of water could be held in a cylinder that has a radius of 2inches and a height of 7 inches if every cubic inch of volume cantains one-fourth ounce of water?
  79. maths

    Water flows through cylinder pip of internal diameter 7cm at 2m per second. If the pipe is always half full, them what is the volume of water (in liters) discharged in 10 minutes?
  80. math

    Car B is 48km ahead of Car A. If Car Bis not moving and Car A is moving at 48km/h, how long will it take Car A to reach Car B?
  81. biochemistry

    A solution was prepared by dissolving 8.0g of solid ammonium sulfate (MW= 132.14, specific volume= 0.565ml/g) in 35ml (i.e 35g) of water. What is the final volume of the solution?
  82. chemistry

    What is the predicted change in the boiling point of water when 4.00 g of barium chloride (BaCl2) is dissolved in 2.00 kg of water? Kb of water = 0.51...
  83. physics

    body floats 1/3 of volume outside the water and 3/4 of its volume outside another liquid.what is the density of ether liquid?
  84. math

    The life of automobile voltage regulators has an exponential distribution with a mean life of six years. You purchase an automobile that is six years old, with a working voltage regulator and plan to own it for three years. a)What is the probability that the voltage regulator ...
  85. Physics

    A watertight car is submerged under water. What force is required to open a door of area 1.04 m2 if the average depth of water at the door is 1.56 m?
  86. Physics

    A watertight car is submerged under water. What force is required to open a door of area 1.12 m2 if the average depth of water at the door is 1.50 m?
  87. math

    A small firm produces AM and AM/FM car radios. The AM radios take 15 hours to produce, and the AM/FM radios take 20 hours. The number of production hours is limited to 300 hours per week. The plant’s capacity is limited to a total of 18 radios per week, and existing orders ...
  88. Physics(Please help)

    A paperweight, when weighed in air, has a weight of W = 6.95 N. When completely immersed in water, however, it has a weight of Win water = 4.26 N. Find the volume of the paperweight. Would I multiply the two values of weight and then by the density of water?
  89. Can anyone help me with a physics question?

    A water tank has a volume of 100m^3. A square pipe leading to a pump is designed to completely replace all water in 20 minutes. Caluclate the length of a side of the square if the water is travelling at 5.0m/s through the square pipe.
  90. calculus

    A water trough is 8m long and its cross-section is an isosceles triangle which is 60cm wide at the top, and the height is 60cm. The trough is not full. Give an expression for V, the volume of water in the trough in cm^3, when the depth of the water is d cm. Thank you in advance!!
  91. math please help

    Suppose that ice cream consumption per person at parties is normally distributed with a mean of 0.39 gallons, and a standard deviation of 0.26 gallons. If you are throwing a party with 33 guests, how much ice cream do you need to buy to make sure that the probability of having...
  92. science

    If bonds are polar, they are strongly attached. Stronger attached bonds take more thermal energy to allow a molecule to break away as vapor: Thus, bp is higher. How does boiling point affect polarity is the fact that a molecule may have a high boiling point alwayz make it ...
  93. algebra

    Explain (in 3 or more sentences) how you can tell if a system of two linear equations has 0, 1, or infinitely many solutions. Be sure to say how the lines are not related and give specific examples of each. ok, I think it might be: A system of two linear equations has one ...
  94. Math (UBC)

    Economists use production functions to describe how output of a system varies with another variable such as labour or capital. For example, the production function P(L) = 200L + 10L^2 - L^3 goves the output of a system as a function of the number of labourers. The average ...
  95. Math Calculus

    Economists use production functions to describe how output of a system varies with another variable such as labour or capital. For example, the production function P(L) = 200L + 10L^2 - L^3 goves the output of a system as a function of the number of labourers. The average ...
  96. Computer Programming

    I posted this question before: How would I put this into one program? These are the directions: Write a method that takes two parameters. If the first parameter is equal to second parameter. Multiply both and print result. If the first parameter is less than the second ...
  97. Question About Math

    Hello! I have two math questions: 1.) Marcos has 28 coins that are all nickels (n) and dimes (d). The value of the coins is $2.05. Which system of equations can be used to find the number of nickels and the number the dimes? A. n + d = 28 5n + 10d = 205 B. n + d = 28 10n + 5d...
  98. Physics

    The diameters of the main rotor and tail rotor of a single-engine helicopter are 7.59 m and 0.98 m, respectively. The respective rotational speeds are 456 rev/min and 4143 rev/min. Calculate the speeds of the tips of both rotors. main rotor: tail rotor: Compare these speeds ...
  99. Chem

    Why does H2O + Sugar have a higher boiling point than Water? I said that H20 + Sugar has a solute of sugar which absorbs some of the heat when boiled. Is that correct?
  100. Chemistry

    A student did the Synthesis of Salicylic Acid experiment starting with 3.89 g of methyl salicylate (C8H8O3) and using 40 mL of 6.0 M NaOH. To evaluate her success she needs to determine the limiting reagent. The reaction goes as follows: C8H8O3 + H2O ==> C7H6O3 + CH3OH. ...
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