1. Math

    12/4 what's the ratio
  2. Math

    If x : y = 3 : 4 and x : (y + z) = 2 : 5, what is the ratio of x : z?
  3. mathematics.

    if h=4r what is the ratio of r:h.
  4. math

    What is the ratio of 4/5 to 7/15?
  5. Ratio

    Would you put 1:4 or 4:1 which one look better?
  6. calculus

    Is this correct? determine if absolutely convergent and convergent 1. the series from n=0 to infinity of ((-1)^n)/n! I said it was abs. conv, and therefore conv 2. the series from n=0 to infinity of (-1)^n/(the square root of (n^2+n+1)) I said ratio test
  7. please help with calculus- thank you!

    Is this correct? determine if absolutely convergent and convergent 1. the series from n=0 to infinity of ((-1)^n)/n! I said it was abs. conv, and therefore conv 2. the series from n=0 to infinity of (-1)^n/(the square root of (n^2+n+1)) I said ratio test
  8. ratio

    Jake sold 36 tickets to the school fair, and Jeanne sold 15 tickets. What is the ratio, in simplest form, of the number of tickets Jeanne sold to the number of tickets Jake sold ?
  9. Math

    The ratio of red jelly beans to yellow jelly beans in a dish is 3:4. if greg eats 3 red jelly beans and 6 yellow ones, the ratio is 4;5. how many jelly beans were originally in the dish?
  10. Algebra worksheet

    Hello. My algebra teacher gave me this worksheet last week and everyone had to bring it yesterday and I haven't done it yet. Can someone please help me. He said Friday is the last day or he's going to take away some points. I've been having trouble with
  11. chemistry

    The acid-dissociation constant, Ka, for gallic acid is 4.57 × 10-3. What is the base-dissociation constant, Kb, for gallate ion?
  12. Physics

    A 25.2 kg block of wood is pulled across a floor at a constant 9.74 m/s with a constant 62.7 N force. The bottom of the box has a surface area of 65.1 cm2. If the block was put on its side (which has twice the surface area of the bottom) and pulled with
  13. COMM 215

    Please guide me on what I have done incorrectly: Part I: True or False 1. The following word group is a FRAGMENT: That movie, one of my favorites. X True __False 2. The following word group is a FRAGMENT: The local baseball team, needing a good pitcher
  14. history

    1 The golden age of culture came during which empire? A.Roman B.Persian C.Gupta D.Mauryan** 2. This raja conquered weak kingdoms left by alexander the great ? a) Chandragupta Maurya*** B) Asoka C) Hari Krishna D) Vishnu 3. In this section of the
  15. Rate Constant - My Work is Incorrect

    Hi! I am stuck with this question and I would like to know what I did wrong: Given that the initial rate constant is 0.0160 s-1 at an initial temperature of 25 degrees C, what would the rate constant be at a temperature of 130 degrees C for the same
  16. psych

    identify if it is Fixed Ratio (FR), Variable Ratio (VR) Fixed Interval (FI) Variable Interval (VI) VR 1. Getting paid for every widget you put on a machine in a factory VI 2. Pop (surprise) quizzes VR 3. Slot machines at Foxwoods casino FI 4. Getting to
  17. Chemistry

    At a given Temperature, the elementary reaction A<--->B in the forward direction is first order in A with a rate constant of 3.90*10^-2s^-1. The reverse reaction is first order in B and the rate constant is 8.20*10^-2s^-1. What is the value at
  18. physics

    A light spring with spring constant 1 200 N/m is hung from an elevated support. From its lower end hangs a second light spring, which has spring constant 1 800 N/m. An object of mass 1.50 kg is hung at rest from the lower end of the second spring. (a) Find
  19. Physics

    What is the algebraic expression for the ratio ac,second/ac,minute of the centripetal accelerations for the tips of the second hand and the minute hand? Express your answer in terms of the periods Tsecond and Tminute. (Answer using T_m to be the period of
  20. Chemistry

    1.00 g of sodium is added to a large excess of water under conditions of constant pressure (1.00 atm) and constant temperature (25 °C ). The following reaction occurs: 2Na (s) +2H2O (l)------> 2NaOH (aq) +H2(g) Delta H°rxn =-369 kJ/mol Calculate the
  21. Pre-Cal

    A piece of charcoal of mass 35g is found in the ruins of an ancient city. The sample shows a carbon-14 activity or R(t)=4.167 decays/sec. Convert the decay constant of ^14C from (1)(a)in terms of seconds instead of yrs. Find the number of atoms N(t)using
  22. PHYSICS!

    An object of mass 154 kg moves in a smooth straight tunnel of length 2990 km dug through a chord of a planet of mass 3.19 × 10^24 kg and radius 1 × 10^7 m Find the effective force constant of the harmonic motion. The value of the universal
  23. can someone please help w/ physics?

    An object of mass 154 kg moves in a smooth straight tunnel of length 2990 km dug through a chord of a planet of mass 3.19 × 10^24 kg and radius 1 × 10^7 m Find the effective force constant of the harmonic motion. The value of the universal
  24. Physics

    A 4.0 x 101 kg wind sled is gliding East across a frozen lake at a constant speed of 12 m/s, when a gust of wind from the southwest exerts a constant force of 1.0 x 102 N on its sails for 3.0 s. With what velocity will the sled be moving after the wind has
  25. Physicss

    1. Carlos jogs in a straight line at a constant speed of 1.5 m/s. He passes by Victoria, who, 10 seconds after Carlos had passed her, starts accelerating at a constant rate of 0.50 m/s^2 a) How much time after the passing of Carlos does it take Victoria to
  26. Science

    A 4.0 x 101 kg wind sled is gliding East across a frozen lake at a constant speed of 12 m/s, when a gust of wind from the southwest exerts a constant force of 1.0 x 102 N on its sails for 3.0 s. With what velocity will the sled be moving after the wind has
  27. Physics

    1. Carlos jogs in a straight line at a constant speed of 1.5 m/s. He passes by Victoria, who, 10 seconds after Carlos had passed her, starts accelerating at a constant rate of 0.50 m/s^2 a) How much time after the passing of Carlos does it take Victoria to
  28. CHEMISTRY

    Strong base is dissolved in 675 ml of 0.200 m weak acid (ka=3.25x10^-5) to make a buffer with a ph of 3.95. Assume that the volume remains constant when the base is added. HA + OH ---> H2O + A^- calculate the pka value of the acid and determine the
  29. physics

    a particle is moving in a straight line the particle starts with speed 5ms and accelerates at a constant rate of 2ms for 8s it then decelerates at a constant rate coming to rest in a further 12s find the total distance during 20s it is 230 but i don't
  30. MATH

    You are listening to a political pundit discussing the growth of the state's population with a radio talk show host. The host states that the State of Arizona had a population of 6,166,318 in 2006. Our pundit says the 2005 population was 5,130,632.
  31. Math

    You are listening to a political pundit discussing the growth of the state's population with a radio talk show host. The host states that the State of Arizona had a population of 6,166,318 in 2006. Our pundit says the 2005 population was 5,130,632.
  32. Mathematics

    You are listening to a political pundit discussing the growth of the state's population with a radio talk show host. The host states that the State of Arizona had a population of 6,166,318 in 2006. Our pundit says the 2005 population was 5,130,632.
  33. Chem

    An electrochemical cell based on the decomposition of H2O2 can be constructed based on the half-reactions in the table below. Half-Reaction | Standard Reduction Potential, E° H2O2+ 2e- => 2 OH- | 0.88 V O2+ 2 H2O + 2e- => H2O + 2 OH- | -0.15 V (d)
  34. maths

    The ratio of number of male workers and female workers in a company is 5:1. If the company has 250 male workers, how many female workers are there in the company? How many more female workers are need to be recruited so that the ratio becomes 1:1?
  35. maths

    The ratio of number of male workers and female workers in a company is 5:1. If the company has 250 male workers, how many female workers are there in the company? How many more female workers are need to be recruited so that the ratio becomes 1:1?
  36. Chemistry

    Assume that the normal blood buffer contains 0.00080 M carbonic acid and 0.0085 M hydrogen carbonate, the pKa = 6.35 for carbonic acid and the volume of blood in the body is 7.00 L. The blood pH, due to disruption is now 7.20. What is the ratio of
  37. physics

    Tracy (of mass 49 kg) and Tom (of mass 65 kg) are standing at rest in the center of the roller rink, facing each other, free to move. Tracy pushes off Tom with her hands and remains in contact with Tom’s hands, applying a constant force for 0.5 s.
  38. physics

    Tracy (of mass 49 kg) and Tom (of mass 65 kg) are standing at rest in the center of the roller rink, facing each other, free to move. Tracy pushes off Tom with her hands and remains in contact with Tom’s hands, applying a constant force for 0.5 s.
  39. physics

    When a mover pushes with a constant sideways force of 20 N on a 15 kg box, the box moves along the floor at a constant speeed of 2m/s, What is the net force on the box?
  40. physics

    A car travels up a hill at a constant speed of 45 km/h and returns down the hill at a constant speed of 70 km/h. Calculate the average speed for the round trip.
  41. Physics

    Car travels up hill at a constant speed of 50 km/h and returns down the hill at a constant speed of 65 km/h. Calculate the avg speed for the round trip in km/h.
  42. physics

    A car travels up a hill at a constant speed of 45 km/h and returns down the hill at a constant speed of 70 km/h. Calculate the average speed for the round trip.
  43. physics

    A car travels up a hill at a constant speed of 45 km/h and returns down the hill at a constant speed of 70 km/h. Calculate the average speed for the round trip.
  44. chemistry

    A reaction has a first order rate constant of (6.25x10^-5 1/s) at T=298.15K and (0.0000538 1/s) at T=338.15K. What is the value of the rate constant at T=316.15K?
  45. Physics

    A car travels up a hill at a constant speed of 33 km/h and returns down the hill at a constant speed of 60 km/h. Calculate the average speed (in km/h) for the round trip.
  46. Math

    To make green paint, Jeff's art teacher instructed him to mix blue and yellow paint. To make the desired shade of green, the ratio of blue paint to yellow paint is 3:4. What does the ratio 3:4 mean? Answer: It means comparing part to part. (Comparing how
  47. Arrhenius Question

    The activation energy of a certain reaction is 32.9 kJ/mol At 25 degrees C the rate constant is 0.0160 units s-1 units. At what temperature in degrees Celsius would this reaction go twice as fast? Given that the initial rate constant is 0.0160 s-1 at an
  48. economics

    A linear trend equation for sale of the form Qt = a + bt was estimated for the period 1993-2007 (i.e. t=1993, 1994, 2007) The results of the regression are as follow: Dependent variable : Qt, R-Square, F-ratio, P-Value on F Observations : 15, 0.6602,
  49. History need help asap

    1 The golden age of culture came during which empire? A.Roman B.Persian C.Gupta D.Mauryan** 2. This raja conquered weak kingdoms left by alexander the great ? a) Chandragupta Maurya*** B) Asoka C) Hari Krishna D) Vishnu 3. In this section of the
  50. chem.

    Can you help me do this one? Thanks: 4. A 2.34 mol/L sodium hydroxide solution is reacted with 11.6 g of lead (II) sulphate powder. What volume of sodium hydroxide would react completely? And one more question, would you multiply the answer by 4 since it
  51. physics

    A grinding wheel of radius 0.370 m rotating on a frictionless axle is brought to rest by applying a constant friction force tangential to its rim. The constant torque produced by this force is 79.2 N • m. Find the magnitude of the friction force.
  52. Algebra

    Consider the function :[1,∞)→Rgivenbytheformulay=x3+2. (a) Show that though the function is increasing at an increasing rate, the change in x required to double the value of the function is not constant. (b) Make a table of values for constant
  53. phyics

    If two cars are traveling along a straight road, one behind the other. the first is traveling at a constant velocity of 10 m/s. the second, approaching from the rear, is traveling at 22 m/s. when the second car is 300m behind the first, the driver applies
  54. Physics

    Is a small or large decay constant best for protection against gamma radiation? Hint: Calculate half thickness. Example: Decay constants for Pb, Al, water, and Fe are 0.77, 0.16, 107, and 0.44. Which is better for radiation shielding? The larger the decay
  55. physic

    A grinding wheel of radius 0.280 m rotating on a frictionless axle is brought to rest by applying a constant friction force tangential to its rim. The constant torque produced by this force is 75.3 N · m. Find the magnitude of the friction force.
  56. Microecomonics (need to see if i got these right

    1. Microeconomics deals with: (Points: 3) the working of the entire economy or large sectors of it. economic growth. individual units in the economy. THIS ONE I PICKED all of the above. 2. The basic concern of economics is: (Points: 3) to keep business
  57. Math - Ratio or Proportion (I think??)

    Hello, I'm looking for guidance on how to solve these two problems below. I think they are proportion or ratio problems, but I am not sure. 1. If 6 pounds of meat feeds 3 people for 5 days, how much meat is required to feed 5 people for 7 days? 2. If a
  58. Analytical Chemistry

    A solution prepared by mixing 51.4 mL of 0.340 M AgNO3 and 51.4 mL of 0.340 M TlNO3 was titrated with 0.680 M NaBr in a cell containing a silver indicator electrode and a reference electrode of constant potential 0.175 V. The reference electrode is
  59. Analytical Chemistry

    A solution prepared by mixing 51.4 mL of 0.340 M AgNO3 and 51.4 mL of 0.340 M TlNO3 was titrated with 0.680 M NaBr in a cell containing a silver indicator electrode and a reference electrode of constant potential 0.175 V. The reference electrode is
  60. Algebra

    The ratio of North American butterflies to South American butterflies is 5:3. The ratio to South American butterflies to European butterflies is 3:2. There are 30 North American butterflies at the butterfly park. Question A. How many South American
  61. Microeconomics

    It has been estimated that the world demand for wheat can be represented by thefunction P = 80 - 2Q. It has been further found that the countries supplying thismarket have marginal cost curves which when summed together are given by theequation MC = 5 + Q
  62. French

    Please correct anything that is wrong! Including Grammar and Vocabulary. Mon activité préféré est le basketball. Je joue au basket depuis cinq ans. J¡¦ai commencé à jouer au basket il y a onze ans. Mon père m¡¦a
  63. Physics

    One ball has 7 times the mass and twice the speed of another. 1. How does the momentum of the more massive ball compare to the momentum of the less massive one? Find the ratio of the momenta. 2. How does the kinetic energy of the more massive ball compare
  64. math

    The ratio of red jelly beans to yellow jelly beans in a dish is 3.4. If Greg eats 3 red ones and 6 yellow ones, the ratio is 4.5. How many yellow jelly beans were originally in the dish? Do you make 3.4 a fraction and 4.5 a fraction and times them? 3/6
  65. Economics

    3. Starting from short-run equilibrium, the following occurs: Labor productivity rises, and individuals expect higher (future) incomes. What will be the effects on the price level, Real GDP, and the unemployment rate in the short run? a.Real GDP will fall,
  66. Economics

    3. Starting from short-run equilibrium, the following occurs: Labor productivity rises, and individuals expect higher (future) incomes. What will be the effects on the price level, Real GDP, and the unemployment rate in the short run? a.Real GDP will fall,
  67. finance (total asset turnover)

    Total asset turnover indicates the firm's? A. liquidity B. debt position C. ability to use its assets to generate sales D. profitability I read about a asset turnover ratio in the text book. this ratio by itself is useless but when compared to the company
  68. math

    Joel made egg and tuna sandwiches in the ratio of 2:3. He then made 15 more tuna sandwiches and the ratio changed to 1:3. How many sandwiches did Joel make in all? 2/3=3/t; solving for t=4.5 when calculating to 15 tuna sandwiches, makes 10 egg sandwiches
  69. Math

    Are these right then I'm done for the day 11) A snail can move 3 inches in 2 minutes. At this rate, how many feet can it move in 6 hours? C. 45 12) Patios can be made by mixing cubic meters of ash, stones, and wood chips in the ratio 5:7:3. How much stones
  70. physics

    A certain uniform spring has spring constant k. Now the spring is cut in half. What is the relationship between k and the spring constant k' of each resulting smaller spring? (Use the following as necessary: k)
  71. math

    Class A has the same number of students as Class B. The ratio of the number of girls in Class A to the number of girls in Class B is 3 : 2. The ratio of the number of boys in Class A to the number of boys in Class B is 3 : 5. What is the ratio of the
  72. math

    Every marble in a jar has either a dot, a stripe or both. The ratio of striped marbles to non-striped marbles is 3:1, and the ratio of dotted marbles to non-dotted marbles is 2:3. If six marbles have both a dot and a stripe, how many marbles are there all
  73. Physics/Math

    Calculate the ratio of the drag force on a passenger jet flying with a speed of 750 km/h at an altitude of 10 km to the drag force on a prop-driven transport flying at one-fifth the speed and half the altitude of the jet. At 10 km the density of air is
  74. physics

    a block of mass 2 kg and block B of mass 8 kg are connected by a spring of spring constant 80 N/m and negligible mass. The system is being pulled to the right across a horizontal frictionless surface by a horizontal force 4 N with both blocks experiencing
  75. 9th grade alegbra - geometric sequence

    Can you explain how to find explicit and recursive formula of geometric sequence given 2 terms? 23. a<4> = -12, a<5> = -6 ratio: -6/-12 = 1/2 explicit: a<n> = ar^(n-1) -6 = a(1/2)^4 -6 = a(0.37) -0.010 = a??? a<n> = -0.010(1/2)^n-1
  76. Ecnomics

    Wilpen Company, a price-setting firm, produces nearly 80 percent of all tennis balls purchased in the United States. Wilpen estimates the U.S. demand for its tennis balls by using the following linear specifications: Q= a + bP + cM + dPr Where Q is the
  77. physics

    A 2.6x10^3 kg elevator carries a maximum load of 888.1 kg. A constant frictional force of 4.9x10^3 N retards the elevator's motion upward. The acceleration of gravity is 9.81 m.s^2. What minimum power must the motor deliver to lift the fully loaded
  78. investments

    #13 Hunter corporation had a dividend payout ratio of 63% in 1999.the retention rate in 1999 was. a)37% d)0% b)63% e)100% c)50% #14 The beta for the DAK corporation is 1.25. If the yield on 30 year T-bonds is 5.65%, and the long term average return on the
  79. Genera Chemistry

    A certain gas expands in volume from 1.75 L to 8.32 L at constant temperature. Calculate the work done (in Joules) by the gas if it expands against a constant pressure of 3.8 atm. Please explain and show the work and correct answers.
  80. Physics

    An automobile moving at a constant velocity of 15m/s passes a gasoline station. Two seconds later, another automobile leaves the gasoline station and accelerates at a constant rate of 2m/s^2 in the same direction. How soon does the second autombile
  81. Physics - still confused -Please help

    In 9.7 s a fisherman winds 2.1 m of fishing line onto a reel whose radius is 30 cm (assumed to be constant as an approximation). The line is reeled in at constant speed. Determine the angular speed of the reel in rad/s. Thank you.
  82. physics

    An automobile moving at a constant velocity of 15 m/s passes a gasoline station. Two seconds later, another automobile leaves the station and accelerates at a constant rate of 2 m/s^2 in the same direction as the 1st automobile. How soon does the 2nd
  83. Math

    you are driving at a constant speed of 50 mi/h along a straight road at a constant speed between A and B along the way you pass through city C. the cities B and C are 100 and 25 miles resorctively from city A Use absolute value function to express this
  84. physics

    Entrance and exit ramps for freeways are often circular stretches of road. As you go around one at a constant speed, you will experience a constant acceleration. Suppose you drive through an entrance ramp at a modest speed and your acceleration is 3.0 {\rm
  85. Physics

    A cheetah is hunting. Its prey runs for 2.56 s at a constant velocity of +10.02 m/s. Starting from rest, what constant acceleration must the cheetah maintain in order to run the same distance as its prey runs in the same time?
  86. physics(HELP..)

    A diatomic ideal gas is heated at constant volume until its pressure becomes 3 times.it is again heated at constant pressure until its volume is doubled.find the molar heat capacity for the whole process?
  87. physics

    A diatomic ideal gas is heated at constant volume until its pressure becomes 3 times.it is again heated at constant pressure until its volume is doubled.find the molar heat capacity for the whole process?
  88. pre-calc

    The force, F, between two bodies of mass m1 kilograms and m2 kilograms whose centers of mass are a distance of r meters apart is given by the formula F = (Gm1m2)/ r2 where G is the gravitational constant of the universe. What are the units of the
  89. physics

    A cheetah is hunting. Its prey runs for 4.3 s at a constant velocity of +8.4 m/s. Starting from rest, what constant acceleration must the cheetah maintain in order to run the same distance as its prey runs in the same time?
  90. physics

    A diatomic ideal gas is heated at constant volume until its pressure becomes 3 times.it is again heated at constant pressure until its volume is doubled.find the molar heat capacity for the whole process?
  91. CHEMISTRY

    A diatomic ideal gas is heated at constant volume until its pressure becomes 3 times.it is again heated at constant pressure until its volume is doubled.find the molar heat capacity for the whole process?
  92. Physics

    A cheetah is hunting. Its prey runs for 3.07 s at a constant velocity of +11.32 m/s. Starting from rest, what constant acceleration must the cheetah maintain in order to run the same distance as its prey runs in the same time?
  93. physics

    A cheetah is hunting. Its prey runs for 3.21 s at a constant velocity of +8.36 m/s. Starting from rest, what constant acceleration must the cheetah maintain in order to run the same distance as its prey runs in the same time?
  94. Physics

    In 9.7 s a fisherman winds 2.1 m of fishing line onto a reel whose radius is 30 cm (assumed to be constant as an approximation). The line is reeled in at constant speed. Determine the angular speed of the reel in rad/s. Thank you.
  95. physics

    A cheetah is hunting. Its prey runs for 2.9 s at a constant velocity of +9.9 m/s. Starting from rest, what constant acceleration must the cheetah maintain in order to run the same distance as its prey runs in the same time?
  96. math

    what is a description of the ratio 52:12
  97. Math

    What is ratio of 102:99 and 86
  98. Algebra

    0.06 is the ratio of 6 to what?? What is 6/100 ?
  99. EQUVALENT RATIO

    If it's in a fraction like. 15/13?
  100. mathematics

    Increase 20 in the ratio 3:2?