Popular questions and responses by Tony
  1. phys

    A 12-kg crate rests on a horizontal surface and a boy pulls on it with a force that is 30 degree below the horizontal. If the coefficient of static friction is 0.40, the minimum magnitude force he needs to start the crate moving is:

    asked on March 12, 2014
  2. Maths

    find the area of the region bounded by the parabola y^2= 16x and its latus rectum

    asked on November 15, 2014
  3. English-Poetry

    can someone help find "The Dying Eagle" by E.J. Pratt for me i need it for my poetry assignment and give me the site address. plz and ty

    asked on November 3, 2008
  4. Physics

    Two manned satellites approaching one another at a relative speed of 0.200 m/s intend to dock. The first has a mass of 5.50 ✕ 103 kg, and the second a mass of 7.50 ✕ 103 kg. Assume that the positive direction is directed from the second satellite

    asked on October 8, 2017
  5. Algebra

    Which of the following statements is false? The sum of two rational numbers is always rational. The sum of a rational number and an irrational number is always rational. The product of a nonzero rational number and an irrational number is always

    asked on June 7, 2017
  6. Math

    If 3000 dollars is invested in a bank account at an interest rate of 6 per cent per year, find the amount in the bank after 12 years if interest is compounded annually Find the amount in the bank after 12 years if interest is compounded quaterly Find the

    asked on July 13, 2011
  7. physics

    A student is trying to decide what to wear. His bedroom is at 20.0°C. His skin temperature is 36.0°C. The area of his exposed skin is 1.46 m2. People all over the world have skin that is dark in the infrared, with emissivity about 0.915. Find the net

    asked on October 19, 2008

    Question 1 Write the first four terms of the sequence whose general term is given. an = 3n - 1 Answer 2, 3, 4, 5 2, 5, 8, 11 -2, -5, -8, -11 4, 7, 10, 13 3 points Question 2 Write the first four terms of the sequence whose general term is given. an = 2(2n

    asked on July 10, 2012
  9. Geography

    Which of the following describes a challenge presented by Canada's population? - increased pollution and high crimes in cities -the cost of government-funded health care -lack of housing in urban areas -the cost of child care in rural areas please.

    asked on July 26, 2019
  10. cal

    Find the largest open intervals where the function is concave upward. f(x)=x^4-8x^2

    asked on November 21, 2013
  11. cal

    Evaluate dy/dt for the function at the point. y√x+1 = 12; dx/dt = 8, x=15, y=3

    asked on November 19, 2013
  12. Physics

    A baseball hits a car, breaking its window and triggering its alarm which sounds at a frequency of 1250 Hz. What frequency (in Hz) is heard by a boy on a bicycle riding away from the car at 6.50 m/s? Take the speed of sound to be 343 m/s.

    asked on August 28, 2019
  13. Physics

    The figure below represents a section of a circular conductor of nonuniform diameter carrying a current of 4.50 A. The radius of cross-section A1 is 0.300 cm. (a)What is the magnitude of the current density across A1? A: 1.59155e2 using J=I/((r^2)pi) (b)

    asked on March 13, 2017
  14. Maths

    The 7th term of an a.p is 11 and the nth term is 3. Find the first five term

    asked on January 19, 2016
  15. science

    Former U.S. President Jimmy Carter Said, "Responsible Biotechnology Is Not The Enemy; Starvation Is." What Did He Mean?

    asked on July 2, 2010
  16. Chemistry

    If water is added to a 25.0 mL sample of 2.70 g/L NaOH(aq) until the volume becomes 4.00 L, find the concentration of the final solution in mol/L.

    asked on July 27, 2020
  17. Math HELP

    #1 find the value of x if RS = 4(x-3)+6 and RT = 5(2x-6). x= 12 x= 6 x= 4*** x= 3 #2 which of the following statements are always true? Choose all that apply. If the circumcenter of a triangle lies on the triangle, then the triangle is a right triangle.

    asked on October 16, 2018
  18. Math

    The grocery store sells kumquats for $4.25 a pound and Asian pears for $2.25 a pound. Write an equation in standard form for the weights of kumquats k and Asian pears p that a customer could buy with $18.

    asked on August 3, 2012
  19. calc

    Determine if the following functions grow faster, slower, or at the same rate as the function 2e^(2x) as x → ∞. a. 3.2^(2x) b. e^(x/6) c. 1/8 e^(2x)

    asked on December 16, 2013
  20. cal

    A conical tank (with vertex down) is 12 feet across the top and 18 feet deep. If water is flowing into the tank at a rate of 18 cubic feet per minute, find the rate of change of the depth of the water when the water is 10 feet deep. I got 81/200pi ft/min.

    asked on November 2, 2013
  21. cal

    The end plates (isosceles triangles) of the trough show below were designed to withstand a fluid force of 5800 lb. How many cubic feet can the tank hold without exceeding this limitation? Assuming the density is 62.4 lb/ft^3, the maximum volume is ____

    asked on December 26, 2013
  22. Math

    A triangle is placed in a semicircle with a radius of 3cm, as shown below. Find the area of the shaded region. Use the value for 3.14, and do not round your answer. Be sure to include the correct unit in your answer.

    asked on June 14, 2011
  23. Math

    How to convert y^2-8x-16=0 to polar form

    asked on March 6, 2018
  24. College Physics 2056

    An electromagnetic wave strikes a 3.00-cm2 section of wall perpendicularly. The rms value of the wave's magnetic field is determined to be 6.00 10-4 T. How long does it take for the wave to deliver 1000 J of energy to the wall?

    asked on April 8, 2012
  25. math

    A pie chart of total number of students in a school has a sector 35degree representing many students are there in the school altogether?

    asked on February 24, 2012
  26. ECO561

    the size of the MPC is assumed to be

    asked on April 25, 2019
  27. Algebra

    A certain forest covers an area of 2,000 square kilometers. Suppose that each year this area decreases by 6%. What is the function that best represents the area of the forest each year and how much area remains after 12 years? Round your answer to the

    asked on June 7, 2017
  28. Math

    Three numbers form a g.p.if the first and third numbers are 5 and 245 respectively, find two possible values for the middle number.

    asked on October 20, 2016
  29. math

    Question 5.5. Sandra throws an object into the air with an initial vertical velocity of 38 feet per second, from a platform that is 30 feet above the ground. How long will it take the object to hit the ground? (Points : 1) 1 second 2 seconds 3 seconds 4

    asked on June 11, 2015
  30. trig

    find the indicated vector. let u = (-9,1), v=(-5,9). Find 3u+v

    asked on June 28, 2013
  31. math - expected value and fair price

    one hundred raffle tickets are sold for $3 each. one prize of $200 is to be rewarded.Lisa purchases one ticket. a- what is her expected value b- what is the fair price for a ticket?

    asked on January 7, 2013
  32. statistics

    A license plate is to have 3 digits followed by 2 uppercase letters. What is the number of different license plates possible if repetition of numbers and letters is not permitted?

    asked on January 7, 2013
  33. math

    how many different committees can be formed from 6 teachers and 31 students if the committee consists of 4 teachers and 4 students?

    asked on January 7, 2013
  34. physics

    A 1.9 kg block slides down a frictionless ramp, as shown in figure 8-28. The top of the ramp is 1.5 m above the ground; the bottom of the ramp is .25 m above the ground. The block leaves the ramp moving horizontally, and lands a horizontal distance d away.

    asked on October 20, 2010
  35. Physics

    A train is moving past a crossing where cars are waiting for it to pass. While waiting, the driver of the lead car becomes sleepy and rests his head on the steering wheel, unintentionally activating the car's horn. A passenger in the back of the train

    asked on August 28, 2019
  36. Algebra

    Which of the following options is an equivalent function to f(x) = 2(5)^2x? f(x) = 50x f(x) = 100x f(x) = 2(25)x f(x) = 4(25)x

    asked on June 6, 2017
  37. cal

    Using the Second Partials Test Find the relative extrema of f(x,y)=-x^(3)+4xy-2y^(2)+1

    asked on March 16, 2014
  38. physics

    if you shook the end of a rope up and down three times each second, what would be the period of the waves set up in the rope? what would be the frequency? plz help me i am so stressed out!

    asked on March 31, 2008

    Henry is taking a medicine for a common cold. The table below shows the amount of medicine f(t), in mg, that was present in Henry's body after time t: t (hours) 1 2 3 4 5 f(t) (mg) 282 265.08 249.18 234.22 220.17 Greg was administered 300 mg of the same

    asked on August 1, 2017
  40. phys

    A short 10-g string is used to pull a 50-g toy across a frictionless horizontal surface. If a 3.0 x 10^(–2)-N force is applied horizontally to the free end, the force of the string on the toy, at the other end, is: A) 0.15 N B) 6.0 x 10^(–3) N C) 2.5 x

    asked on March 8, 2014
  41. trig

    Find all angles in degrees that satisfy the equation. Round approximate answers to the nearest tenth of a degree. tan α = -1.85

    asked on June 17, 2013
  42. statistics-?mean average with lowest number out?

    A mean average of 60 on 7 exams is needed to pass a course. on his first 6 exams, Adam received grades of 46,74,70,59,66 and 72. if his lowest grade of the exams already taken is to be dropped,what grade must he receive on his last exam to pass?

    asked on January 7, 2013
  43. Eth 125

    Click on the box in front of your selected answer. There is only one correct response per question. Week 5 Quiz Name: Click on the box in front of your selected answer. There is only one correct response per question. When completed, save, and post and

    asked on July 21, 2010
  44. science

    . In which regions of the world will most population growth occur during the twenty-first century? What conditions contribute to rapid population growth in these locations?

    asked on June 25, 2010
  45. English

    I have never met anybody famous. AM I CORRECT TO SAY THIS IS Present perfect tense? Also can anybody tell me where I can look at examples of ESA Engage, Study, Activate Lessons? I wish to look at some examples of how they are written up and get my head

    asked on October 29, 2008
  46. english

    IDENTIFY THE PARTS OF SPEECH IN THE FOLLOWING SENTENCE. I usually go swimming with my best friend and his rather unusual girlfriend. a) I - personal pronoun - countable (I is the subject in this sentence) b) usually - adverb (indicates frequency) c) go -

    asked on October 23, 2008
  47. Chemistry

    How many moles of oxygen are required for the complete combustion of 2.2g of c3h8 to form carbon dioxide and water

    asked on May 4, 2020
  48. Chemistry

    Please someone explain the best way of solving this. A 55 kg woman has 7.5 x 10 to the power of negative 3 moles of hemoglobin (Molar mass=64,456 g/mole) in her blood, how many hemoglobin molecules is that? What is the quantity in grams?

    asked on April 11, 2017
  49. trig

    simplify the expression. cos^2x+sin^2x/cot^2x-csc^2x

    asked on July 14, 2013
  50. statistics

    Shown below are rental and leasing revenue figures for office machinery and equipment in the United States over a sever-year period according to the U.S. Census Bureau. Use these data to run a linear regression and then forecast the rental and leasing

    asked on July 8, 2013
  51. statistics-?mean average with lowest number out?

    A mean average of 60 on 7 exams is needed to pass a course. on his first 6 exams, Adam received grades of 46,74,70,59,66 and 72. if his lowest grade of the exams already taken is to be dropped,what grade must he receive on his last exam to pass?

    asked on January 7, 2013
  52. Physics

    The leader of a bicycle race is traveling with a constant velocity of +11.9 m/s and is 10.7 m ahead of the second-place cyclist. The second-place cyclist has a velocity of +9.10 m/s and an acceleration of +1.20 m/s2. How much time elapses before he catches

    asked on August 27, 2012
  53. Math

    an = 3n - 1 Answer 2, 3, 4, 5 2, 5, 8, 11 -2, -5, -8, -11 4, 7, 10, 13 3 points Question 2 Write the first four terms of the sequence whose general term is given. an = 2(2n - 3) Answer -6, -2, 2, 6 -1, 1, 3, 5 -2, -4, -6, -8 -2, 2, 6, 10 3 points Question

    asked on July 17, 2012
  54. M1, Mechanics

    A particle of mass 4kg is suspended from a point A on a vertical wall by means of a light inextensible string of length 130cm.A horizontal force P, is applied to the particle so that it is held in equilibrium a distance of 50cm from the wall. Find the

    asked on March 19, 2012
  55. Precalculus

    The sphereflake shown (not shown for question) is a computergenerated fractal that was created by Eric Haines. The radius of the large sphere is 1. Attached to the large sphere are nine spheres of radius . Attached to each of the smaller spheres are nine

    asked on November 7, 2010
  56. electric field intensity

    Two 2.0 g spheres are suspended by 10.0 cm long light strings. A uniform electric field is applied in the x direction. If the spheres have charges of -5.0 10-8 C and +5.0 10-8 C, determine the electric field intensity that enables the spheres to be in

    asked on January 17, 2009
  57. Physics

    A distance of 5.00 cm is measured between two adjacent nodes of a standing wave on a 20.0 cm long string. A) In which harmonic number is the string vibrating? B) Find the frequency of this harmonic if the string has a mass of 1.75 x 10-2 kg and a tension

    asked on September 2, 2019
  58. Math

    an organization is selling raffle tickets for 20$ each. you purchase one of 500 raffle tickets. the prize for this raffle is 6000$. what is your expected winnings?

    asked on November 4, 2017
  59. science

    A 2.4-kg pile of aluminum(ρ = 2.70 g/cm3)cans is melted, then cooled into a solid cube. What is the volume of the cube?

    asked on February 6, 2017
  60. Math

    A notebook costs 4 times more than a pencil. The pencil is 30gh less than the note book . What is the price of the pencil

    asked on January 12, 2017
  61. Introduction to business

    2. Ida works on creating ways to ensure that customers receive goods at the right time and correct location. Ida is involved in her firm's ________ strategy. A. pricing B. transportation C. product D. promotion 3. Mario is part of a strategic planning

    asked on May 1, 2015
  62. Introduction to business

    1. In which stage of the product life cycle are profits at their highest? A. Introductory stage B. Decline stage C. Maturity stage D. Growth stage

    asked on May 1, 2015
  63. cal

    Find the largest open intervals where the function is concave upward. f(x)= x/x^2+1

    asked on November 22, 2013
  64. trig

    Given that θ is an angle in standard position whose terminal side contains the given point, provide the exact value of the indicated function. (-2, -3) Find sec θ.

    asked on June 11, 2013
  65. Math

    If john must have a mark of 80% to past a test of 35 items, the number of items he may miss and still pass the test is

    asked on September 2, 2012
  66. Math ( Can You check my Work?) = 3n - 1 2. an = 2(2n - 3) = 4^n = (2/3)^n 5. an = (-1)^n(n + 5) 6. an = (-1)^n + 1(n + 6) 7. an= n+3/2n-1 8. a1 = -5 and an = an-1 - 3 for n ≥ 2 9. a1 = -6 and an = -2an-1 for n ≥ 2 10.a1 = 4 and an = 3an-1 + 2 for n ≥ 2 11. Find a8

    asked on August 1, 2012
  67. Math

    Use the compound interest formulas A = P(1 + r/n)nt and A = Pe^rt to solve. Find the accumulated value of an investment of $3000 at 9% compounded continuously for 3 years.

    asked on July 15, 2012
  68. vocab

    whats the root or base word of rebellious,belligerent, doctrine, document, levity, levitate, initiative, itinerary, impulsive, compel

    asked on February 5, 2012
  69. Chemistry

    Calcium carbonate reacts w/stomach acid according to the following chemical equation. CaCO3+2HCl(aq)-> CaCl2(aq)+H2O(l)+CO2(g) A. Balance the eqaution B. Tums is one commercially sold antacid that contains CACO3. If Tums is added to 20.0ml of 0.400 M HCl,

    asked on December 14, 2010
  70. Statistic

    The number of customers who enter a supermarket each hour is normally distributed with a mean of 600 and a standard deviation of 200. The supermarket is open 16 hours per day. what is the probability that the total number of customers who enter the

    asked on December 8, 2010
  71. ETH 125

    click on the box in from your selected answer.There is only one correct response per questions. 1. which of the following statements is true about Arabs and Muslims? ac. most Muslims are not Arabs b. most Arab Americans are not Muslims c. the Arabs

    asked on July 21, 2010
  72. CRT/205


    asked on March 31, 2010
  73. chemistry

    Suppose you tried to combine 42 grams of magnesium with 42 grams of oxygen. Which of the two substances would have some left after the reaction and how much magnesium oxide would be formed?

    asked on March 3, 2010
  74. Physics

    Calculate the reflected percentage of an ultrasound wave passing from human muscle into bone. Muscle has a typical density of 1.06 * 10³ kg/m³ and bone has a typical density of 1.89 * 10³ kg/m³.

    asked on August 28, 2019
  75. History

    Which statement about the slave trade is true? 1. European traders often went to Africa’s interior on slave raids 2. Some African leaders, such as Afonso, tried to end the slave trade, while others encouraged it*** 3. The slave trade had minimal effect

    asked on October 17, 2018
  76. Algebra

    Which of the following options results in a graph that shows exponential growth? f(x) = 0.4(3)x f(x) = 3(0.5)x f(x) = 0.8(0.9)x f(x) = 0.9(5)−x

    asked on June 6, 2017
  77. Algebra

    The sum of two different positive integers is 123. The larger integer is four more than six times the smaller one. What are the two integers?

    asked on February 6, 2017
  78. maths

    the sum of a number and its square is one and a half times their difference. what is the number?

    asked on June 7, 2016
  79. Mathematics

    Solve tan2x = 5sin2x Giving all solutions in the interval 0 ≤ x ≤ 180°

    asked on November 18, 2015
  80. math

    What is the volume of a regular pyramid having a base area of 24 square inches and height of 6 in

    asked on June 29, 2015
  81. Chemistry Honors

    What mass of calcium bromide is needed to prepare 150.0 mL of a 3.50 M solution? (Assume that the molecular weight of CaBr2 is 200.618 g/mol) A. 105 g B. 100.42 g C. 0.105 g D. 103.35 g

    asked on December 16, 2014
  82. cal

    Using a Lagrange Multiplier with One Constraint. Find the maximum value of f(x,y)=4xy, where x>0 and y>0, subject to the constraint (x^(2)/3^(2)+(y^(2)/4^(2)=1.

    asked on March 15, 2014
  83. cal

    The function gives the distances (in feet) traveled in time t (in seconds) by a particle. Find the velocity and acceleration at the given time. s= √(t^2-5), t=3

    asked on November 23, 2013
  84. cal

    Approximate the area under the curve and above the x-axis using n rectangles. Let the height of each rectangle be given by the value of the function at the right side of the rectangle. f(x)=3/x from x=2 to x=6; n=4

    asked on November 20, 2013
  85. US History Mrs. Sue

    Select the group that best embraced the beliefs of Abraham Lincoln. Abolitionists or The Free Soil Party. Is it Abolitionists.

    asked on October 31, 2013
  86. Calculus

    g(x)= {0 if x2 Find all values x=a where the function is discontinuous. Is the answer 0 and 2 or just 2?

    asked on September 24, 2013
  87. statistics

    Investment analysts generally believe the interest rate on bonds is inversely related to the prime interest rate for loans; that is bonds perform well when lending rates are down and perform poorly when interest rates are up. Can the bond rate be predicted

    asked on July 8, 2013
  88. statistics

    Suppose a researcher gathered survey data from 19 employees and asked the employees to rate their job satisfaction on a scale from 0 to 100 (with 100 being perfectly satisfied). Suppose the following data represent the results of this survey. Assume that

    asked on July 8, 2013
  89. trig

    Convert the rectangular coordinates to polar coordinates, using radian measure for the angle. (6, -6) 6√(2),7π/4 OR -6√(2),5π/4

    asked on June 28, 2013
  90. trig

    Find the indicated roots. Write the answer in trigonometric form. Fourth roots of 256(cos 220° + i sin 220°)

    asked on June 28, 2013
  91. trig

    The point (-3, 4) is on the terminal side of angle θ in standard position. Find cot θ.

    asked on June 11, 2013
  92. algera 1A

    find the slope, if it exists,of the line containing the pair of the points. (-2,-11) and (-20,-15). I came up with (-2,-9)is this correct?

    asked on March 5, 2013
  93. Math please help with these word problems i have

    1. The circumference of a circle is the product of the number π and twice the radius. 2. The area of a square is the square of the length of a side. 3. The perimeter of a square is four times the length of a side. 4. Force equals the product of mass and

    asked on July 13, 2012
  94. chemistry

    calculate the density of oxygen,O/2 under each of the followig conditions-stp,1.00 atm and 35.0 celsius?

    asked on October 19, 2011
  95. brain teaser

    You are standing outside a closed door. On the other side of the door is a room that has three light bulbs in it. The room is completely sealed off from the outside. It has no windows and nothing can get in or out except through the door. On the outside of

    asked on September 14, 2011
  96. math

    60% more than c=1200

    asked on April 20, 2011
  97. social studies

    Which statement is the most accurate? A. Business activity in 1929 began to decline a few months before the stock market crash. B. The stock market crashed a few months before business activity began to decline. C. The stock market crashed at virtually the

    asked on December 10, 2010
  98. Science

    Compare the formation processes of igneous, sedimentary, and metamorphic rocks. In general, which process can be the most direct, requiring the fewest number of steps? Which can be the most complex? i think igneous is the most direct, requiring the fewest

    asked on September 22, 2009
  99. Math

    Rose's garden is in the shape of a trapezoid. If the height of the trapezoid is 16m, one base is 20m and the area is 224m2, what is the length of the other base? The area of a trapezoid is: A= (1/2) h (b1 + b2) ...where h = height and b1, b2 are the bases.

    asked on March 23, 2007
  100. Algebra

    A refrigerator was purchased and 5% tax was added to the purchase price. If the total bill was $630, how much did the refrigerator cost?

    asked on May 11, 2020


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