shan

Most popular questions and responses by shan
  1. Calculus

    The demand function for Sportsman 5 X 7 tents is given by the following function where p is measured in dollars and x is measured in units of a thousand. (Round your answers to three decimal places.) p = f(x) = -0.1x^2 - x + 40 (a) Find the average rate of

    asked on June 7, 2013
  2. physics

    Skater 1 has a mass of 45 kg and is at rest. Skater 2 has a mass of 50 kg and is moving slowly at a constant velocity of 3.2 m/s [E]. Skater 3 has a mass of 75 kg and is moving quickly at a constant velocity of 9.6 m/s [E]. Which skater experiences the

    asked on April 16, 2012
  3. algebra

    Suppose you work in a clothing store. Each week you earn $250 plus a commission equal to 2.5% of your sales. This week your goal is to earn no less than $350. Write and solve an inequality to find the amount of sales you must have to reach your goal.

    asked on November 2, 2011
  4. Calculus

    The percentage of alcohol in a person's bloodstream t hr after drinking 8 fluid oz of whiskey is given by the following equation. A(t) = 0.26te-0.3t , (0 t 12) (a) What is the percentage of alcohol in a person's bloodstream after 1/2 hr? After 6 hr? (Round

    asked on July 11, 2013
  5. engineering mechanics

    The resultant if a certain system of forces has x and y components. Determine the components of this resultant with respect to N and T axes rotation 30 degree counterclockwise relative to the x and y axes. Ans. Rn= 500 lb Rt= 266 lb How did it happen?

    asked on May 2, 2015
  6. Calculus

    The concentration of a certain drug (in mg/cm3) in a patient's bloodstream t hr after injection is given by the following function. C(t) = (0.6 t)/(t^2 + 5) Evaluate the limit. (If an answer does not exist, enter DNE.)

    asked on June 7, 2013
  7. ratio

    Divide 6400 in the ratio 5:3

    asked on March 3, 2016
  8. ENGLISH (ESL)

    please need proof Reading Health promotion means what you can do to reduce the health risks and promote the wellness of a human being. This process directed towards enabling people to take action and support them in changing their lifestyle to move toward

    asked on September 21, 2013
  9. Accounting

    Effect of Stock Split Gino's Restaurant Corporation wholesales ovens and ranges to restaurants throughout the Midwest. Gino's Restaurant Corporation, which had 100,000 shares of common stock outstanding, declared a 5-for-1 stock split (4 additional shares

    asked on June 7, 2013
  10. physics

    Two fi gure skaters are moving east together during a performance. Skater 1 (78 kg) is behind skater 2 (56 kg) when skater 2 pushes on skater 1 with a force of 64 N [W]. Assume that no friction acts on either skater. T / I (a) Determine the acceleration of

    asked on April 16, 2012
  11. physics

    A horizontal plank (m = 2.0 kg, L = 1.0 m) is pivoted at one end. A spring. (k = 1.0 x 10. 3. N/m) is attached at the other end find the angular frequence for small oscillations?

    asked on December 11, 2007
  12. physics

    The automobile is originally at rest at s = 0. If its speed is increased by dv/dt = (0.05t2)ft/s2, where t is in seconds, determine magnitudes of its velocity and acceleration when t = 18 s.

    asked on March 17, 2008
  13. physics

    Determine the stopping distances for an automobile going a constant initial speed of 97km/h and human reaction time of 0.50s , for an acceleration a=−6.5m/s2

    asked on August 30, 2013
  14. physics

    You decide to take your dog to the leash-free zone in the park. While playing, the dog runs after a ball and heads 24 m [W 12° S] and then gets distracted by a squirrel and runs 33 m [E 52° S]. Determine the displacement of the dog

    asked on September 27, 2012
  15. math

    Let p represent the statement, "Jim plays football", and let q represent "Michael plays basketball". Convert the compound statements into symbols. Jim does not play football or Michael plays basketball. 1. p q 2. ~p q 3. p q 4. ~(p q)

    asked on February 28, 2011
  16. physics

    A body of mass 5.0 kg is suspended by a spring which stretches 10 cm when the mass is attached. It is then displaced downward an additional 5.0 cm and released. Its position as a function of time is approximately?

    asked on December 10, 2007
  17. physics

    A 0.200 kg block of ice at 15ºC is placed into a pan on a stove, heated to a liquid, and then to vapour with a final temperature of 115ºC. Calculate the total amount of heat required for this process.

    asked on June 3, 2012
  18. Calculus

    Find the absolute extrema of the function. (Round your answer to three decimal places.) f(x) = xe-x2 on [0,2] Absolute maximum value: at x = Absolute minimum value: at x =

    asked on July 12, 2013
  19. physics

    11.2 The baggage truck A has a mass of 800 kg and is used to pull two cars, each with a mass of 300 kg. If the tractive force F on the truck is F = 480 N, determine the initial acceleration of the truck. What is the acceleration of the truck if the

    asked on March 18, 2008
  20. physics

    when one boy is sitting 1.20 meter from the center of he seesaw the girl must sit on the other side 1.50 meter from the center to maintain an even balance . however the boy carries an additional mass pf 14 kg and sit 1.80 meter from the center the girl

    asked on October 11, 2016
  21. bio

    Explain why it is more likely for mistakes in oogenesis to be inherited by the offspring than mistakes in spermatogenesis

    asked on June 6, 2012
  22. stat

    In a certain high school, the probability that a student drops out is 0.08, and the probability that a dropout gets a high-school equivalency diploma (GED) is 0.33. What is the probability that a randomly selected student gets a GED?

    asked on February 17, 2012
  23. physics

    1.6 Determine the maximum weight of the flowerpot that can be supported without exceeding a cable tension of 50 lb in either cable AB or AC. Note that the 2 cables make an angle 60 and 53.1 respectively with the horizontal

    asked on March 3, 2008
  24. algebra

    Suppose you measured the diameter of a tree trunk to be 5 cm. The actual diameter can vary by at most 0.4 cm, due to the error in measuring a non-flat surface. Write an absolute value inequality for the range of acceptable diameters and solve the

    asked on November 2, 2011
  25. Finance Homework

    Washington-Pacific invests $2 million to buy a tract of land and plant some young pine trees. The trees can be harvested in 15 years, at which time W-P plans to sell the forest at an expected price of $4 million. What is W-P's expected rate of return?

    asked on February 18, 2011
  26. physics

    The collar has a weight of 8 lb. If it is released from rest at a height of h = 2 ft from the top of the uncompressed spring, determine the speed of the collar after it falls and compressed the spring 0.3 ft.

    asked on March 19, 2008
  27. social studies

    How did the geography of ancient Greece cause it to separate into independent communities?

    asked on February 12, 2009
  28. physics

    You are 1.7m tall and your eyes are 8cm from the top of your head. How tall must a vertical plane mirror be to see your entire length? Also how far from the ground is the top of the mirror?

    asked on April 28, 2008
  29. geometry

    a self supporting ladder placed so that the angle between the ladder and the ground is 75.5" can be used to test whether the ladder can support a certain load. The diagram represents a ladder placed next to a window that is 20feet above the ground. What is

    asked on May 29, 2014
  30. physics

    500g of water at 40 deg C and 200g of a mixture of ice and water are combined. The final temperature is 10 deg C. How much of the original 200g mixture was ice?

    asked on February 23, 2008
  31. Calculus

    Use the four-step process to find the slope of the tangent line to the graph of the given function at any point. f(x) = 16 - 10 x Step 2: f(x + h) - f(x) = Step 4: f'(x) = lim(h->0)(f(x + h)- f(x))/h =

    asked on June 7, 2013
  32. physics

    A toy car (200 g) moves by shooting a plastic ball (50 g) horizontally out the back. The average acceleration of the car is 1.2 m/s 2 [E] and there is negligible friction acting on each part of the toy. T / I C (a) Draw an FBD for each object. (b) Identify

    asked on April 16, 2012
  33. Calculus

    In a study prepared in 2000, the percentage of households using online banking was projected to be f(t) = 1.7e0.71t , (0 t 4) where t is measured in years, with t = 0 corresponding to the beginning of 2000. (Round your answers to three decimal places.) (a)

    asked on July 11, 2013
  34. English

    No wonder can last more than three days All good things are three are the same statements ? conquer is opposite of overpower 2 submit 3 subject 4 vanquish 5 master .

    asked on March 21, 2012
  35. physics

    The motion of a particle is described by x = 10 sin (piet +pie/2 ). At what time ( in second ) is the potential energy equal to the kinetic energy ? here is what i have done so far where am i going wrong V=pie10cos(piet + pie/3) V^2 = pie^2 100cos^2(piet+

    asked on December 12, 2007
  36. math

    tanx+secx=2cosx (sinx/cosx)+ (1/cosx)=2cosx (sinx+1)/cosx =2cosx multiplying both sides by cosx sinx + 1 =2cos^2x sinx+1 = 2(1-sin^2x) 2sin^2x + sinx-1=0 (2sinx+1)(sinx-1)=0 x=30 x=270 but if i plug 270 back into the original equation i get undefined

    asked on September 6, 2008
  37. math

    the diagonals of a parellelogram are 20 cm and 30cm long and intersect at an angle of 25 degrees. Find the sides of the parellelogram

    asked on September 6, 2008
  38. physics

    A baseball bat makes contact with a ball 1.05 meters above the ground and the ball moves away at a 41.5 degree angle from the horizontal. It's a homer!! The ball lands in the bleachers 133.5 meters away from home plate, 4.1 meters above the ground. How

    asked on September 25, 2008
  39. economics

    Is your school currently producing at capacity? What considerations might inhibit full capacity utilization?

    asked on June 29, 2010
  40. physics

    600g of water is mixed with 20g of steam at 100 deg Celcius. What is the final temperature if the original temperature of the water is 25 deg Celcius

    asked on February 23, 2008
  41. math

    I have decided that a 300 foot tall tower needs an extra guide wire. The location I have chosen is 1000 feet from the base of the tower. What angle does the wire make with the ground and what length will the wire be?

    asked on October 30, 2017
  42. Economics

    GDP=520 Government spending decreases by 15 Taxes decrease by 20 Investment increases by 30 Net Exports decrease by 30 MPC=.75 What is the new equilibrium GDP?

    asked on July 9, 2013
  43. physics

    Brandy is made by distilling ethyl alcohol, which is done by boiling the alcohol until it turns into a gas. How much heat is required to completely distil 0.750 kg of ethyl alcohol?

    asked on November 11, 2012
  44. Math

    The play sold 88 tickets. The adult tickets sold for $8 and the kid tickets sold for $5. The total amount collect for tickets was $614. How many tickets of each type were sold?

    asked on February 4, 2012
  45. science HElp

    Ph scale Which on is true A substance with ph is twice as acidic as substance with ph of 4. A subtances with ph 3 is 10 as acidic as substance with ph of 4. A substance with ph 3 twice as alkies as substances with ph 4. a substancs with ph 3 10 time alkies

    asked on November 23, 2011
  46. English Help

    Please check grammatical errors. "Paradise lost" is a very interesting and religious story. The write make a point to describe the unfaithfulness of angles and fall of human from the heaven. The basic theme of the poem is man‘s first disobediently to

    asked on November 18, 2010
  47. physics

    A horse runs off of a 11 meter high cliff into the sea. The horse is running at a speed of 3.6 m/s. How much time does the horse spend in the air? How far from the base of the cliff is the horse when it hits the water?

    asked on September 25, 2008
  48. ITT

    use the eight step strategy to graph f(x)=-3x2-12x-5 find the vertex find x and y intercepts determine the number of points to graph graph the parabola

    asked on March 4, 2015
  49. ENGLISH (ESL)

    PROOF READING A nurse was working in ER, during her shift, she see a patient who is having a fever of 101 degree F. The patient also has a open wound on his left leg, the wound is red, painful, swollen, and foul-smelling pus is showing signs of infection.

    asked on September 14, 2013
  50. Math

    A spider crawls at a speed of 1.17 miles per hour , at this rate how long will it take the spider to crawl 3/4 mile?

    asked on October 26, 2010
  51. physics

    jane hits a golf ball on a flat fairway. The ball leaves the ground at a 14.5 degree angle and lands 193 meters away. How long was the ball in the air? How fast was the ball moving when it left the ground?

    asked on September 25, 2008
  52. physics

    an image in a convex mirror is 12cm tall and 30cm from the mirror.IF the focal length is 50cm, where is the object and how tall. i got 7.5cm for the object height but a convex mirror always gives a reduced image?

    asked on April 28, 2008
  53. math

    the graph of a quadratic function has x-intercepts -1 and 3 and a range consisting of all numbers less than or equal to 4. Determine an expression for the function.

    asked on September 6, 2008
  54. PHYSICS

    an open tube is .86m long. Find the fundamental frequency and frequency of the next harmonic if the Temp=10deg celcius also if you closed one end of the tube what would the new fundamental frequency be?

    asked on March 24, 2008
  55. Math

    Find each product mentally using the distributive property show the steps that you used

    asked on October 1, 2015
  56. Economics

    GDP=375 Government spending increases by 50 Taxes increase by 50 MPC=.9 What is the new equilibrium GDP?

    asked on July 9, 2013
  57. Finance Homework

    If you deposit $2,000 in a bank account that pays 9% interest annually, how much would be in your account after 14 years? Round your answer to the nearest cent.

    asked on February 17, 2011
  58. physics

    A stone A is dropped from rest down a well, and in 1 s another stone B is dropped from rest. Determine the distance between the stones another second later. The well is 80ft deep

    asked on March 12, 2008
  59. physics

    A jet starts of at a point A and is flying horizontally. And person is standing at a point B on the ground which is to the right of point A. When the jet is directly over the person, the person hears sound coming from point A. The average air temp is 20

    asked on March 7, 2008
  60. physics

    A spring balance has a scale that reads from 0to50 kg.The length of the scale is 20cm.A body suspended from this balance,when displaced & released, oscillates with period of 0.6 s.What is the weight of the body?

    asked on March 21, 2015
  61. Calculus

    A major corporation is building a 4325 acre complex of homes, offices, stores, schools, and churches in the rural community of Glen Cove. As a result of this development, the planners have estimated that Glen Clove's population (in thousands) t yr from now

    asked on June 7, 2013
  62. Phy new

    ____​2.​An object is thrown vertically upward with a speed of 25 m/s. How much time passes before it comes back down at 15 m/s? (Air resistance is negligible.)

    asked on October 1, 2012
  63. math

    In an 8 inch square cake pan and a 10 inch square cake pan. what is the difference in volume each pan will hold. each pan is 1.5 inches high

    asked on March 9, 2011
  64. physics

    design an experiment that will allow you to determine the length of the soccer field from one set of goal posts to a single goal post at the other end of the field.you may only use one metre stick,and two retort stands.you are not permitted to walk onto

    asked on February 22, 2011
  65. math

    in a survey of 260 dancers: 172 knew the ballroom dances 145 knew latin dances 102 knew swing dances of these, 65 knew the ballroom and swing dances. 93 knew ballroom and latin dances 56 knew latin and swing dances 31 dancers indicated they knew all 3

    asked on February 22, 2011
  66. science

    2 waves are travelling through container one has apmlitude of 3 cm and other is 9 cm ?wich one is strong wave?

    asked on July 24, 2010
  67. science grade 9

    even though carbon dioxide puts out a burning splint it does not confirm the presence of the gas why?

    asked on March 20, 2009
  68. science grade 9

    even though carbon dioxide puts out a burning splint it does not confirm the presence of the gas why?

    asked on March 20, 2009
  69. math

    solve the following trig equation : 7 = 8sin(1/2)x. I can solve this using the half-angle indentity. But i need to solve this using period and phase change equation. how do i do this?

    asked on April 16, 2008
  70. algebra

    the weight (in kg) of each student in a group of students is 9 times his height (in feet) write a linear equation with x representing the height (in feet) and y representing the weight i kg of the student

    asked on April 17, 2015
  71. English

    Is the following sentence a transitive verb? The strawberries contained vitamin c?

    asked on December 1, 2014
  72. ENGLISH (ESL)

    A nurse was working in ER, during her shift, she see a please need proof reading . patient who is having fever of 101 degree F. The patient also has open wound on his left leg, the wound is red, painful, swollen, and foul-smelling pus is showing signs of

    asked on September 14, 2013
  73. Calculus

    Find the indicated limit given the following. lim_(x->a)f(x) = 8 lim_(x->a)(2f(x)) =

    asked on June 7, 2013
  74. Calculus

    Complete the table by computing f(x) at the given values of x. (Round your answers to three decimal places.) f(x) = 2x^2 - 7 x 6.9 6.99 6.999 7.001 7.01 7.1 Use these results to estimate the indicated limit (if it exists). (If an answer does not exist,

    asked on June 7, 2013
  75. bay highschool

    For each of following situations ,identify what creates on one of the forces that creates the motion described (there may be many) A. a flag flag back and forth at the top of a flagpole. B.a soccer ball is passed from one player to another C. a large piece

    asked on January 7, 2013
  76. early childhood

    how can Brain Development Research Influence Early Childhood Curriculum

    asked on September 19, 2012
  77. physics

    Brandy is made by distilling ethyl alcohol, which is done by boiling the alcohol until it turns into a gas. How much heat is required to completely distil 0.750 kg of ethyl alcohol?

    asked on June 3, 2012
  78. understanding psychology

    when physical energy has resulted in a response in a sense organ, it is clear that:

    asked on September 29, 2011
  79. math

    one million tickets are sold for a lottery in which a single prize will be awarded. (a) if you purchase one ticket, determine your odds against winning (b) if you purchase 10 tickets, determine your odds against winning

    asked on March 11, 2011
  80. MATH

    . Let p, q, and r be the following statements: p: Jamie is on the train. q: Sylvia is at the park. r: Nigel is in the car. Translate the following statement into English: (p ~q) r

    asked on February 28, 2011
  81. math

    a survvey of vegetable gardeners showed the following: 69 grew tomatoes 25 grew cucumbers 30 grew zucchini 18 grew both tomatoes and cucumbers 21 grew both tomatoes and zucchini 14 grew both cucumber and zucchini 12 grew all 3 12 had none of these 1. how

    asked on February 22, 2011
  82. Finance

    Corporate bonds issued by Johnson Corporation currently yield 8.5%. Municipal bonds of equal risk currently yield 6%. At what tax rate would an investor be indifferent between these two bonds? Round your answer to two decimal places. The answer I keep

    asked on February 7, 2011
  83. science

    why is high pressure so important in plant oil extraction

    asked on November 1, 2009
  84. science

    what are three challanges with managing non renewable resources

    asked on July 14, 2009
  85. physics

    a concave mirror of diameter 40m is used with a 6cm tall object placed 20 cm from it. Where is the image? Can you check my solution Radius(R)=20cm Distance object(do)=20cm (2/R)=(1/do)+(1/di) (1/di)=(2/R)-(1/do) why do they give you the object height i

    asked on April 28, 2008
  86. physics

    a concave mirror of diameter 40m is used with a 6cm tall object placed 20 cm from it. Where is the image? Can you check my solution Radius(R)=20cm Distance object(do)=20cm (2/R)=(1/do)+(1/di) (1/di)=(2/R)-(1/do) why do they give you the object height i

    asked on April 28, 2008
  87. math

    solve 0=(3^0.5)tan(x+(pi/6))+1 and find all general solutions

    asked on April 16, 2008
  88. physics

    Find the length of string and speed of wave in string if frequency of given wave is 850 hz and the wavelength is 0.26m? The string is in a tube that is closed at both ends. I found the speed using v=freqeuncy*wavelength. How do i find the length of the

    asked on March 23, 2008
  89. Math

    The sum of 14 and ricks age is 70

    asked on September 17, 2017
  90. math

    I am a 6 digit number my 8 is worth 8*1000 .one of my 4's is worth 40. The other is worth 1/10 as much.My 5 is worth 50,000.MY 3 is worth 3(100's).My other number is 1. What number am I?

    asked on October 8, 2015
  91. Economics

    GDP=500 Government spending decreases by 20 Taxes increase by 20 Investment decreases by 20 MPC=.8 What is the new equilibrium GDP?

    asked on July 9, 2013
  92. Economics

    GDP=500 Government spending decreases by 20 Taxes increase by 20 Investment decreases by 20 MPC=.8 What is the new equilibrium GDP?

    asked on July 9, 2013
  93. English

    Can any one help me on an essay about importance of education

    asked on October 18, 2012
  94. english

    What does the backdoor of Pichot’s symbolize for Grant? please write in paragraph form

    asked on October 14, 2012
  95. Fraction

    We solve fraction left to right or right to left. Eg. 3/4+1/5-4/4 I mean asked does we have to do addition first or subtraction.

    asked on August 24, 2012
  96. Decimal division

    2 /25 = .08 why we add 0 with decimal, in some questions we don't add 0. Plz explain .

    asked on August 21, 2012
  97. Math

    The perimeter of a rectangle is 160 inches the length exceeds the width by 72 inches. Find the length and width?

    asked on February 20, 2011
  98. visual arts

    how to make a theme about death and life?

    asked on February 16, 2011
  99. Algebra

    The function p(d)=1+d/33, gives the pressure in atmospheres (atm), at the depth d in the sea (d is in feet). Note that p(0)=1 atm, p(33)=2 and so on. Find the pressure at 40 feet? I am lost please help? Thanks!

    asked on February 6, 2011
  100. algebra

    2x + 4 = 9 - y

    asked on November 16, 2010

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