Newest questions posted by Ron
  1. Math

    What is 7x+3=77
  2. math

    If you have a square blanket and it's 130 square inches. How long is one side in furlongs?
  3. philosophy

    Determine if these arguments are strong, weak or failed 1. Pierre is French. Therefore, he is European. Answer:weak
  4. Science

    How much work is done to lift 5kg box to a vertical height of1.5m
  5. math

    A 13 feet ladder is placed 5 feet away from a wall. What is the distance from the ground straight up to the top of the ladder?
  6. Chemistry

    What will burning of .3 liters of C2H2 produce?
  7. math

    If the average of 4 numbers is 12, what is the sum of the 4 numbers?
  8. ab calculus

    Air is being blown into a spherical balloon at the rate of 75 cm3/s. Determine the rate at which the radius of the balloon is increasing when the radius is 28 cm.
  9. math

    calvin has 90 stamps. for every mexican stamp, calvin has 8 U.S. stamps. How many mexican stamps does Calvin have?
  10. Calculus

    find the extremum of f(x,y) subject to the given constraint, and state wether it is a maximum or minimum. 4y^2-29x^2; 3x+y=21
  11. history

    In the context of criminal punishment, desert refers to:
  12. physics

    Four point masses, each of mass 2.0 $kg$ are placed at the corners of a square of side 1.4 $m$. Find the moment of inertia of this system about an axis that is perpendicular to the plane of the square and passes through one of the masses. The system is set
  13. physics

    A cyclist starts from rest and pedals such that the wheels of his bike have a constant angular acceleration. After 18.0 s, the wheels have made 190 rev. What is the angular acceleration of the wheels? What is the angular velocity of the wheels after 18.0
  14. Chemistry

    Zn (0.85M) + Cu (1.10M) in an electrochemical cell. what is the conc of the zinc ion?
  15. consumer math

    The Jones hope to accumulate $12000 for a sunroom over the next 6 yrs. How much would they need to invest right now at 3.9% compounded quarterly to reach goal? Please help
  16. Physics

    The exact mass of the moon was not determined until the Apollo lunar orbiter went into orbit around the moon. They used the period and the orbital radius to find the mass. But since you already know the mass of the moon, if the spaceship was orbiting 485
  17. Physics

    Two soccer players, Mary and Jane, begin running from nearly the same point at the same time. Mary runs in an easterly direction at 4.43 m/s, while Jane takes off in a direction 60.2o north of east at 5.07 m/s. How long is it before they are 24.7 m apart?
  18. Multiplication of fractions

    60 people can receive a single slice of pizza,how many people can receive a single slice of pizza if 7 pizzas are purchased?
  19. Physics

    A city planner is working on the redesign of a hilly portion of the road. An important consideration is how steep the road can be so that even a low-powered car can get up the hill without slowing down. A particular small car with a mass of 1368 kg can
  20. Math

    From -40 take -55, the answer I came to is 15, is this correct?
  21. Math

    Need help please. 183 1/3% of 4800
  22. Trig

    The Leaning Tower of Pisa is 55m tall. The tope edge of the tower is 5m out from the bottom edge. What is the angle created between the ground and the tower? Round your answer to the nearest degree. tan -1 (55/5) = 85 degrees but my Brother says I did it
  23. 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
  24. Research

    The Average Score in the entrance examination in MSHS is 80 with a standard deviation of 40 students was taken from this year’s examinees and it was found to have a mean score of 84. Is there a significant difference between the known mean and the sample
  25. Science

    An airplane is traveling 725 m/s at 48.8° degrees north of west when a wind starts to blow. The velocity of the wind is 106.7 m/s and it is blowing 21.8° east of north. What is the speed of the airplane relative to the ground?
  26. Science

    A boat moving at 8.9 km/hr relative to the water is crossing a river 4.6 km wide in which the current is flowing at 2.4 km/hr. At what angle upstream should the boat head to reach a point on the other shore directly opposite the starting point?
  27. Chemistry

    A gas weighing 23.6 g occupies a 10.0 L flask at 27 C and 780. torr of pressure. Calculate the molar mass of the gas.
  28. allied school

    glady swan slipped from a sidewalk curb and twisted her right ankle. because of the severe pain cpt codes icd 9 codes icd codes
  29. Precalc

    1) Janet is offered a job with a starting salary of $15,000, and a guaranteed annual increase of $600. If she takes the job, what will be her guaranteed salary for the 10th year? What would her total earnings be for the first 10 years? Answer: $21,000 ; $
  30. Math

    Justin had 5 packages with 8 bottles of water in each package. He drank some of the bottles before the trip. During the trip, he drank 5 bottles a day. He drank all of the bottles before he went home. How many bottles of water did Justin drink before the
  31. Spanish II

    Fill in the blank with the correct conjugation of the verb in parentheses. ¿Cuándo (regresar) mi tía de México? A)regresamos B)regresan C)regreso D)regresa (There are more, help needed before Friday please.)
  32. Algebra

    A rectangular field is four times as long as it is wide. If the perimeter of the field is 400 yards, what are the fields dimensions? The width of the rectangular field is ____ yards.
  33. english

    When you write in second person, you’re acting the part of a/an A. critic. B. observer. C. participant. D. advocate.
  34. Math

    Carol can run 4.2 Miles's in 14 minutes, what is her speed per minute.
  35. Algebra

    Suppose a box is to be constructed from a square piece of material of side length x by cutting out a 3-inch square from each corner and turning up the sides. Express the volume of the box as a polynomial in the variable x
  36. Math

    There are 64 students. 80% scored a 75 on a final test. How many students scored a 75?
  37. Geometry

    we have line QR parallel= to line ST, PQ = 8, QS = , and PT = 12. Find PR.
  38. Physics

    The crankshaft of an engine increases its spin from 1,200 rpm to 1,500 rpm in 0.50 s. What is its angular acceleration
  39. Calculus

    A wire of length 12 meter is cut into two parts; one part is bent to form a square, and the other is bent to form an equilateral triangle. Where the cut cut should be made if a) the sum of the two areas is to be a maximum? b) the sum of the two areas is be
  40. MATH

    10 5/12 ÷ 1/10 =
  41. PSY/240 Hunger, Eating,

    I am confused, please explain what are set points and what are settling points in relation to weight control?
  42. Psy 270

    Where can I find the best resources to research this question besides the text book? Psychology has many applications in our lives, both professionally and personally. How might having a background in psychology help you in your professional life? How
  43. Social Studies

    Name the 6 founding Fathers of the us
  44. Psychological and Psychophysiological Stress Disor

    What kind of traumatic events cause undiagnosable psychological disorders?
  45. sy270

    What questions should I ask the parents of four year old Clara about her sudden change of behavior and refusal to go back to pre-school.
  46. Psy270

    Individual Clinical Assessment Mr. and Mrs. Lawson brought their 4-year-old adopted daughter, Clara, to see Dr. Mason, a psychiatrist. Clara was polite in greeting Dr. Mason, but did not smile and kept her gaze down as she took a seat. Mr. and Mrs. Lawson
  47. psy220

    the American emphasis on the pursuit of happiness
  48. Physics Help..

    A small cube (m=0.290 kg) is at a height of 261 cm up a frictionless track which has a loop of radius, R = 28.71 cm at the bottom. The cube starts from rest and slides freely down the ramp and around the loop. Find the speed of the block when it is at the
  49. Math

    If the cost is 3.00 doars per sq ft to clean a carpet, how much will it cost to clean a carpet 12.5 ft x 23ft?
  50. psy/270

    ⦁ What do researchers mean by ‘subjective well-being’? How is this construct measured?
  51. economics

    A speculator sells a stock short for $50 a share. The company pays a $2 annual cash dividend. After a year has passed the seller cover a short position of $42. What is the percentage return on the position (excluding the impact of any interest expense and
  52. economics

    An investor sells a stock short for $36 a share. A year later the investor cover the position at $30 a share. If the margin requirement is 60% what is the oercentage return earned on the investment? now assume the price is at $42 when the investor closes
  53. MATH

    5.7 + 33/100 + 61/1000 =
  54. Physics

    A bullet (m = 0.0250 kg) is fired with a speed of 92.00 m/s and hits a block (M = 2.50 kg) supported by two light strings as shown, stopping quickly. Find the height to which the block rises. Find the angle (in degrees) through which the block rises, if
  55. abnormal behavior

    1. Some criteria used for reaching a diagnosis cannot be observed directly 2. Personality disorders can be similar to each other. 3. People with different personalities can be given the same diagnosis 4. Do you think that personality disorders are true
  56. Math

    3 1/6 + 2 3/10 = Give answer in simplest form
  57. Math

    3 7/10 - 1 2/5 = Give answer in simplest form
  58. Math

    2 7/12 + 1 2/3 = Give answer in simplest form
  59. Math

    1 1/5 + 7/10 = Give answer in simplest form
  60. MATH

    2 3/4 + 1/12 = Give answer in its simplest form
  61. Fedora

    . If /home/jenny/draft and /home/alex/letter are links to the same file and the following sequence of events occurs, what will be the date in the opening of the letter? __________ a. Alex gives the command vim letter. b. Jenny gives the command vim draft.
  62. MATH

    if john spent $130 and matt spent $480, john will have three times as much money left as matt. both boy's started with the same amount of money. how much money did each boy's start with ?
  63. MATH

    if john spent $130 and matt spent $480, john will have three times as much money left as matt. how much money did each boy start with ?
  64. math

    if john spent $130 and matt spent $480, john will have three times as much money left as matt. how much money did each boy start with ?
  65. Math

    There are how many hundredsn the number 344,298
  66. Math

    in the numeral 3,000,000, there are how many thousands
  67. Math

    If a population is growing at 3.5 percent compounded continuously how long before it doubles?
  68. math

    Brilli the ant placed the numbers 1,2,…,n in order clockwise around a circle. She can create an infinite sequence A={aj}∞j=0 of integers by letting a0=k∈{1,2,…,n} and constructing ai+1 from ai by taking the integer that is ai positions clockwise in
  69. Math

    Express 2.4 as a fraction in its simplest form
  70. Algebra

    Leila purchased a prepaid phone card for . Long distance calls cost cents a minute using this card. Leila used her card only once to make a long distance call. If the remaining credit on her card is , how many minutes did her call last?
  71. chemistry

    You have 10.0 g each of Na, C, Pb, Cu and Ne. Which contains the smallest number of moles?
  72. chemistry

    How many grams of carbon dioxide will form if 4.4 g of propane reacts with 16.0 g of oxygen producing 7.2 g of water?
  73. Discrete Math

    For sets A, B, C is a subset of U, prove or disprove (with a counter-example) the following: If A is a subset of B, B is not a subset of C, then A is not a subset of C,
  74. Discrete Math

    Let n be positive integer greater than 1. We call n prime if the only positive integers that (exactly) divide n are 1 and n itself. For example, the first seven primes are 2, 3, 5, 7, 11, 13 and 17. (We should learn more about primes in Chapter 4.) Use the
  75. Discrete Math

    If n is a positive integer and n > 1, prove that (n over 2)+ (n-1 over 2) is a perfect square.
  76. Discrete Math

    If n is a positive integer and n > 1,prove that (n) + (n-1) is a perfect sq  (2) ( 2 )
  77. Discrete Math

    8 trophies can be awarded to 30 people in how many different ways
  78. math(statistics)

    suppose a random variable X can equal to 1,2,3,4,or 5. if P(x3)=.5 (a)p(x=3) and b P(x
  79. Math

    Name the vertices of a square whose angles are f,g,a,l
  80. Math

    What is 2 2/4 +2 2/4 + 6 1/2=?
  81. Math

    When you divide a whole number by a fraction with a numerator of 1 explain how you can find the quotient?
  82. Math

    Sue has 8 yards of twine she cuts the twine into equal pieces of 3/4 feet each how many pieces can he cut?
  83. Math

    If you have 8 yards of twine and you cut the twine into 3/4 pieces each . How many pieces can you cut?
  84. math

    show me how to calculate percentage return on the security if the payoff to the security in one year is $1000 and the security costs is $1500 today?
  85. Physics

    A motorist travels 1600 m at 80 m/s and 750 m at 100 m/s. What is the average speed of the motorist for this trip.
  86. Economics

    Opera CD buyers are located in New York and Los Angeles. At the current price for a CD, $25 in both New York and Los Angeles, aggregate demand for Opera CD is 10,000 units (i.e. the sum of the demand in New York and Los Angeles); and the price elasticity
  87. chemistry

    What volume of 1.75M CaSO3 solution could be prepared from 450g of CaSO3?
  88. chemistry

    What volume of 1.75M CaSO3 solution could be prepared from 450g of CaSO3?
  89. chemistry-rate of reaction

    The fictitious compound, arrhenium fluoride (AhF), reacts with itself to form a dimer with the formula Ah2F2. The reaction is second order in AhF. The value of the rate constant is 3.591×10−3 M−1s−1. What is the initial rate of reaction in a reactor
  90. crim procedure

    Which of the following rights is dependent upon whether formal charges have been filed or a criminal prosecution has begun? Answer the Fourth Amendment protection against unreasonable search and seizure the Fifth Amendment privilege against
  91. calculus

    A 13 foot ladder leaning against a wall makes an angle of degree radians with the ground. The base of the ladder is pulled away from the wall at a rate of 2ft/sec. How fast is degree changing when the base of the ladder is 5 feet way.
  92. Physics

    An arrow is shot into the air at a velocity of 25 m/s and an angle of 32 degrees above horizontal. It lands at the same level that it was shot from. How long is the arrow in air? How far does the arrow travel?
  93. hist

    Which of the following was a problem faced by the average Chinese citizen during the Song dynasty? a.the shrinking use of the civil service exam and thus the lack of opportunity to obtain a government position b.the control of the Chinese treasury by
  94. Physics

    On a hot day in summer, your friends decide to go rafting down a local river. Since you are afraid of water, your job is to provide them with refreshments from a bridge as they pass. When the first raft is 10 meters away, traveling at 3.5 m/s, you drop a
  95. chemistry

    How to balance simple oxidation-reduction reactions by the half-reaction method. Mg (s) + N2 (g)= Mg3N2 (s)
  96. Chemistry

    I have a question regarding the titration curve. When the ph is equal pKa that mean there are equal amount of conjugate acid to conjugate base. When a weak acid dissociates for example H3Po4 H+ H2PO4- My problem: I don’t understand how the ph rises
  97. DrBob222 : need help with the problem

    An unknown compound, X, is though to have a carboxyl group with a pKa of 2.0 and another ionizable group with a pKa between 5 and 8. When 75 mL of 0.1M NaOH is added to 100 mL of a 0.1M solution of X at pH 2.0, the pH increases to 6.72. Calculate the pKa
  98. chem -please help!!!!!!!!!!!!

    An unknown compound, X, is though to have a carboxyl group with a pKa of 2.0 and another ionizable group with a pKa between 5 and 8. When 75 mL of 0.1M NaOH is added to 100 mL of a 0.1M solution of X at pH 2.0, the pH increases to 6.72. Calculate the pKa
  99. chemistry buffers

    What molar ratio of HPO4 2- to H2PO4 - in solution would produce a pH of 7.0? Phosphoric acid (H3PO4), a triprotonic acid, has pKa values: 2.14, 6.86, and 12.4. Only one of the pKa values is relevant here. how do i know which pka value to use.. please
  100. chem

    Pka=pH when[HA]=[A- ]. What is [A-]/[HA] WHEN PH=PKA+1 AND WHEN pH=pka-1


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