1. Calculus

    a rifle aimed horizontally and 5 feet above level ground fires a bullet with a muzzle velocity of 3000 ft/sec. How far does the bullet travel from the end of the muzzle before it strikes the ground? (Ignore air resistance)

    asked by Jr on February 16, 2011
  2. Calculus

    Air expands adiabatically in accordance with the law PV^1.4=Const. If at a given time the volume is 14 cubic feet and the pressure is 40 pounds per square inch, at what rate is the pressure changing when the volume is decreasing 1 cubic foot per second?

    asked by Alexa on May 1, 2016
  3. geometry

    Benji is 55 ft from the base of his apartment building in New York when he spots his friend, Ronny, in the apartment building 150 feet up on the 15th floor. From where he is standing, what is the angle of elevation when he looks up at Ronny? Round to the

    asked by Anonymous on December 13, 2012
  4. geometry

    12 foot board is leaning against a wall and makes a 77 degree angle with ground. How high does the board reach on the wall? I used Sin 77x 12 and got 11.692 but questions is round this to the nearest tenth of a foot.... Is it 11.7 feet? Thank you.

    asked by sweet pea on February 21, 2016
  5. English

    Combine each pair of sentences. Use verbs Action and being in the new sentence. Write the new sentence 1. Jena jumped four feet high. Jena landed in the foam pit 2. The team ran around the track. The team was soon tired.

    asked by Ahmed on April 22, 2019
  6. Math

    A particle is moving at some constant speed. Use the following information to answer the following questions. s(t)=100/t©÷+12; t¡Ã0; see represents feet and t represents seconds a)Find the velocity and acceleration equations for this particle. b)When

    asked by Kelsey on March 6, 2008
  7. Algebra

    Ian wants to fence three sides of a rectangular exercise yard for his dog. The fourth side of the exercise yard will be a side of the house. He has 100 feet of fencing available. Find the dimensions that will enclose the maximum area.

    asked by Keonn'a : Please help me. on November 10, 2017
  8. math

    A recreation room has the following dimensions.12ft,30ft,8ft,8ft. Carpeting will cost $1.50 a square foot. How many square feet of carpet will be needed and how much will it cost? Include correct units at each stage within your solution.

    asked by kozy on May 11, 2011
  9. math trigonometry

    My question is kinda hard i don't know how to start the problem to get my answer. the question is: You are cleaning the gutters on your house. the gutters are @ a height of 24 feet. if you have a 50 foot ladder, what is the minimum angle the ladder can

    asked by kayla on December 6, 2009
  10. Algebra

    The height h in feet of an object after t seconds is given by the function h=-16t^2+70t+5. How long will it take the object to hit the ground? Round your answer to the nearest thousandth. If that is the function, you need to have a value for the height to

    asked by Angela on July 12, 2007
  11. math

    A projectile is launched vertically upward from the top of a 240-foot building. This translates to the model y = -16t^2 + 32t + 240 where y is the height in feet and t is the time in seconds after it was launched, When will the projectile hit the ground?

    asked by jennifer on September 25, 2008
  12. Math

    Mary is riding a merry-go-round, whose radius is 25 feet and which is turning 36 degrees per second. Seeing a friend in the crowd, she steps off the the outer edge of the merry-go-round and suddenly finds it necessary to run? At how many miles per hour

    asked by Mike on February 19, 2017
  13. Word problems

    Jennifer serves the volleyball to Debra with an upward velocity of 10.5ft/s. The ball is 5 feet above the ground when she strikes it. How long does Debra have to react, before the volleyball hits the ground? Round your answer to two decimal places.

    asked by Jim on October 6, 2015
  14. college algebra

    When a ball is thrown up into the air, it makes the shape of a parabola. The equation S= -5t^2 + v*t + k gives the height of the ball at any time, t in seconds, where “v” is the initial velocity (speed) in ft/sec and “k” is the initial height in

    asked by renee on March 29, 2010
  15. math

    the official height-to-width ratio of the united states flag is 1 : 1.9. if a united states flag is 9.5 feet wide,how high should it be?

    asked by here on May 20, 2009
  16. algebra

    The formula for the area of a trapezoid is A = h(B + b) 2 . The area of the truss is 20 square feet. Find the height of the truss if the shorter base is the same as the height h.

    asked by HELP ME on November 11, 2016
  17. math

    the official height to width ratio of the united states flag is 1:1.9. if a united states flag is 9.5 feet wide,how high should it be?

    asked by help plz on May 26, 2009
  18. algebra

    Light intensity(lumens) at a depth of x feet has the equation log I/12=-0.0125x what depth will the light intensity be half that of the surface

    asked by Steve on November 27, 2012
  19. AP Calculus

    Two sides of a triangle are 15 and 20 feet in length. How fast is the third side increasing if the angle between the given sides is 60 degrees and is increasing at a rate of 2 degrees per second.

    asked by Sarah on October 26, 2006
  20. math

    in a grain bin 90' in diameter 130'tall how many bushel of grain at 1.2445 cubic feet per bushel will the bin hold?

    asked by Fred on September 17, 2016
  21. algebra

    Marcus has 72 feet of fencing. He wants to build a rectangular pen with the largest possible area. What should the dimensions of the rectangular pen be to maximize the area?

    asked by ashley on July 28, 2013
  22. Math

    A carpenter wants to cut an 18-foot board into two pieces so that one piece is 3 feet shorter than twice the shorter piece. Where should he make the cut? ---?--- ft from one end

    asked by Amy on June 1, 2012
  23. math

    each square title, to be used to cover a table, has an area of 16in2. how many tiles are required to cover a square table that has the dimensions of 6 by 6 feet?

    asked by anita on November 13, 2014
  24. Math

    The perimeter of a triangle is 43 feet.The small side is three was in the middle side, and the largest size to less than twice the middle side. What is the length of the longest side?

    asked by Anonymous on February 2, 2017
  25. math

    A fabric manufacturing company has a fabric that is 36 inches wide. If the company needs 75 sq. yards, how many linear feet does the manufacturing team need to produce? NEED HELP!

    asked by Jalyn on November 19, 2014
  26. math

    The wall height, d, of the first story is 11 feet. The center height h of the second story has not yet been determined. Find h such that the second story will have the same cross-sectional area as the first story

    asked by Anonymous on January 31, 2012
  27. Trig

    A 16 - foot ladder leaning against the side of a house reaches 12 feet up the side of the house. What angle does the ladder make with the ground

    asked by Bri on September 23, 2012
  28. Geometry

    What is the height of a pole standing 20 feet from the base of pole and measure the angle of the elevation to the top of the pole to be 54 degrees what's the height of the pole

    asked by Will on May 22, 2016
  29. math

    Suppose you have enough material for 60 feet of fencing. With this material you want to build the largest rectangular enclosure possible. What are the dimensions of the largest possible enclosure, and what is its area?

    asked by Anonymous on November 16, 2010
  30. Math

    A skyscraper is 1150feet above ground level it extends 35 feet below ground level what is the total length of the skyscraper from top to bottom?

    asked by Janet on October 5, 2016
  31. math

    Farmer Brown had ducks and cows. One day she noticed that the animals had a total of 12 heads and 32 feet. How many of the animals were ducks and how many were cows?

    asked by maddy on March 16, 2009
  32. math

    Jamar is trying to fit his encyclopedia on a shelf. Each book is 2 1/4 inch thick. The shelf is 2 1/4 feet wide. How many books will Jamar be able to fit

    asked by Anonymous on February 16, 2015
  33. math

    The distance d in miles that can be seen on the surface of the ocean is given by d = 1.6 h, where h is the height in feet above the surface. How high (to the nearest foot) would a platform have to be to see a distance of 19.5 miles?

    asked by leona on December 6, 2011
  34. Geometry

    A circular fountain has a radius of 10 feet if the gardener wants to enclose the fountain with a fence, what is the best approximation for the length of fence the gardener will need to buy?

    asked by Elijah on May 23, 2016
  35. math

    A home improvement store sells 2355 feet of wire per day. How many yards of wire does the store sell per day?

    asked by Cameron on February 2, 2012
  36. Health - CHECK MY ANSWERS PLEASE

    Chris wants to know his BMI. He is five feet, six inches tall and weighs 130 pounds. What is Chris's BMI? Answer choices: 1. 18 2. 21 3. 28 4. 30 **MY ANSWER** Is it: 2. 21?

    asked by Elina on January 30, 2014
  37. math

    The wall height, d, of the first story is 11 feet. The center height h of the second story has not yet been determined. Find h such that the second story will have the same cross-sectional area as the first story

    asked by Anonymous on January 31, 2012
  38. Living a Healthy Life

    In a child care setting, physical hazards include A. plant allergens, microorganisms, and arthropods. B. radiation, temperature extremes, and noise. C. climbing stairs, lifting, and jumping in place. D. carbon monoxide, lead, and radon.

    asked by Amanda on January 7, 2015
  39. Science

    Hydrochloric acid and sodium hydroxide are mixed together to form salt and water. During the reaction, the temperature of the solution increases. Which of these best explains why this is considered to be a chemical change? No energy was destroyed. Heat was

    asked by Anonymous on August 2, 2011
  40. Calculus

    A landscape architect wished to enclose a rectangular garden on one side by a brick wall costing $60/ft and on the other three sides by a metal fence costing $50/ft. If the area of the garden is 102 square feet, find the dimensions of the garden that

    asked by Sarah on April 9, 2016
  41. math

    1) A tank holds water with a base 2 ft by 6 ft. If a rectangular solid whose dimensions are 1 foot by 1 foot by 2 feet is totally immersed in water, how many inches with the water rise? A)1/6 B)1 C)2 D)3 E)12 ^I got B 2) AB+BA= CDC IF each of the four

    asked by Aline on March 1, 2018
  42. Math

    Ruth is flying a kite. Her hand is 3 feet above ground level and is holding the end of a 375 foot long kite string, which makes an angle of 64° with the horizontal. How high is the kite above the ground? (Round your answer to one decimal place.)

    asked by Anonymous on December 13, 2010
  43. Geometry

    PLEASE! Someone help me with geometry!? A wooden board is placed so that it leans against a loading dock to provide a ramp. The board is supported by a metal beam perpendicular to the ramp and placed on a 1 ft. tall support. The bottom of the support is 9

    asked by Anna on September 22, 2010
  44. physics

    A 3.00-g bullet (c = 0.0305 cal/g . C° = 128 J / kg . C°) moving at 180 m/s enters a bag of sand and stops. By what amount does the temperature of the bullet change if 80% its KE becomes thermal energy that is transferred to the bullet?

    asked by clint on May 29, 2017
  45. Chemistry

    Can someone check these answers for me THANK YOU! 1) Which of the following combinations would most increase the solubility of a gas in a liquid? is it increase the pressure and increase the temperature 2) The concepts of molarity and molality are like in

    asked by anonymous on December 15, 2007
  46. physics

    A highway is made of concrete slabs that are 14.0 m long at 20° C. (a) If the temperature range at the location of the highway is from -17.8° C to +40.8° C, what size expansion gap should be left (at 20° C) to prevent buckling of the highway? (b) How

    asked by Steve on April 27, 2014
  47. Heat Transfer

    A hollow tube having an inside diameter of 2.5 cm and a wall thickness of 0.4 mm is exposed to an environment at h=100 W/m2¨¬C and T¡Ä =40¨¬C. What heat generation rate in the tube will produce a maximum tube temperature of 250¨¬C for k =24

    asked by Ritesh on March 4, 2014
  48. Heat Transfer

    A hollow tube having an inside diameter of 2.5 cm and a wall thickness of 0.4 mm is exposed to an environment at h=100 W/m2¨¬C and T¡Ä =40¨¬C. What heat generation rate in the tube will produce a maximum tube temperature of 250¨¬C for k =24

    asked by RHS on March 11, 2014
  49. physics

    A .095kg aluminum sphere is dropped rom the roof of a 45m building.If 65% of the thermal energy produced when the sphere hits the ground is absorbed by the sphere, what is its temperature change?

    asked by Mark on April 24, 2011
  50. PHYSICS

    Consider a classroom 10.0m long by 6.0m wide by 4.0m high at "room temperature" 20.C and 1.0 atmosphere. A) How many moles of gas are contained in the room? B) Assuming an average molecular weight of 28, what is the mass of the room air?

    asked by Physics on May 7, 2015
  51. astronomy

    Mars has an albedo of 15. Given that it doesn't have much of an atmosphere, estimate the mean surface temperature on Mars. Note: the semimajor axis of the orbit of Mars is 1.52 AU. (Please enter your answer in units of degrees Kelvin)

    asked by vineeth on July 5, 2017
  52. AP Chemistry

    I need alot of help on this problem, it is due WEDNESDAY and I have no clue how to do it Use the following information to identify element A and come pound B, then answer questions a and b. An empty glass container has a mass of 658.572 g. It has a mass of

    asked by Eric on January 21, 2008
  53. Chemistry

    Magnesium sulfate is often used it first aid hot-packs giving off heat when dissolved in water. When 2.00 g of MgSO4 dissolves in 15.0 mL of water (d= 1.00g/mL) at 25.0ºC, 1.51 kJ of heat is evolved. A) Write the balanced equation for this reaction. I

    asked by Chris on January 28, 2007
  54. english

    Which of the following statements is an example of personification? a. my brother was always a lone wolf b. the morning dew gleamed liek a field of diamonds c. the flowers bowed their heads in homage d. the bear's feet were as cold as ice C--Flowers are

    asked by y912f on May 27, 2009
  55. Science help (just 4 questions)

    1. Which of the following is an example of an environmental pressure? (1 point) the air pressure in the atmosphere a lake that is gradually running out of water a fight between two members of the same species breeding between two members of the same

    asked by Miley23 on December 4, 2013
  56. statistics

    -A set of seven scores has a mean of 10. If one of the scores is changed from X=15 to X=1, what will be the new value for the new mean? -A sample of n=8 scores has a mean of M=12. One new score is added to the same and the new mean is found to be M=13.

    asked by Joan on January 27, 2008
  57. physics/ 2D motion

    A projectile of mass 0.539 kg is shot from a cannon. The end of the cannon’s barrel is at height 6.4 m, as shown in the figure. The initial velocity of the projectile is 9 m/s . How long does it take the projectile to hit the ground? Answer in units of s

    asked by meagan on September 25, 2011
  58. 5th grade

    The Texas state dish is chili. Alexi made 6 quarts of chili and served it at a party. He had 1/3 of the chili leftover. How many quarts did he have left? I can't figure this out! Please help, my math worksheet is talking about equivalent fractions!

    asked by asia on February 12, 2009
  59. phy 231

    An h1 = 2.10 m tall basketball player wants to make a basket from a distance d = 19.2 m, as seen in the figure. If he shoots the ball at α = 54.4° angle, at what initial speed must he throw the basketball so that it goes through the hoop without striking

    asked by Help plz on January 24, 2016
  60. PHYSICS 1301 (COLLEGE)

    As shown in the figure below, two masses m1 = 4.10 kg and m2 which has a mass 50.0% that of m1, are attached to a cord of negligible mass which passes over a frictionless pulley also of negligible mass. If m1 and m2 start from rest, after they have each

    asked by Bree on October 18, 2014
  61. Physics

    Consider the skateboarder in the figure below. If she has a mass of 57 kg, an initial velocity of 21 m/s, and a velocity of 10 m/s at the top of the ramp, what is the work done by friction on the skateboarder? Ignore the kinetic energy of the skateboard's

    asked by Chrissy on October 17, 2014
  62. Physics

    As shown in the figure below, a skateboarder starts at point A on the ramp and rises to point B, a maximum height of h = 2.89 m above the top of the ramp. If the amount of work done against friction is insignificant, determine his initial speed at point A.

    asked by Anonymous on October 24, 2014
  63. cal

    A Norman window has the shape of a rectangle surmounted by a semicircle (see the figure below). If a Norman window is to have a perimeter of 24 ft, what should its dimensions be in order to allow the maximum amount of light through the window? (Round your

    asked by Anonymous on May 2, 2011
  64. Chemistry

    Calculate the average translational kinetic energy (kJ/molecule) for a molecule of NH3 at 431 K, assuming it is behaving as an ideal gas. I understand how to figure out the kJ/mole, but I don't understand how to get the kJ/molecule that this question is

    asked by Luc on April 11, 2010
  65. physics (please help!)

    A projectile of mass 0.539 kg is shot from a cannon. The end of the cannon’s barrel is at height 6.4 m, as shown in the figure. The initial velocity of the projectile is 9 m/s . How long does it take the projectile to hit the ground? Answer in units of s

    asked by meagan on September 21, 2011
  66. Physics 12

    . A rope 2 metres long rests on a table where the coefficient of friction is 0.5. What minimum length of rope can stay on the table before the whole rope will slip off? a) 133 cm b) 80 cm c) 200 cm d) Cannot determine without more information. The answer

    asked by Harvey on March 6, 2016
  67. Algebra 2

    For each function, identify the horizontal translation of the parent function, f(x)=x^2. Then graph the function. 19. y=(x-4)^2 I need to figure out how to solve this problem, so steps would be appreciative! PLEASE don't leave websites for me to check out,

    asked by Mike on December 6, 2016
  68. physics

    The figure shows the velocity of a solar-powered car as a function of time. The driver accelerates from a stop sign, cruises for 20 at a constant speed of 60 , and then brakes to come to a stop 40 after leaving the stop sign.

    asked by Anonymous on September 10, 2011
  69. physics

    The figure shows the velocity of a solar-powered car as a function of time. The driver accelerates from a stop sign, cruises for 20 at a constant speed of 60 , and then brakes to come to a stop 40 after leaving the stop sign.

    asked by Anonymous on September 10, 2011
  70. calculus

    A snowball is melting at the rate of 2 inches per hour. How fast is the surface area of the snowball changing at the instant the snowball has a radius of 3 inches i tried (d/dt) = 4pir^2 (dr/dt) its multiple choice and -72pi isnt there so im just trying to

    asked by Thomas on August 28, 2015
  71. physics

    . Two people pull on a stubborn mule, as seen from a helicopter in Figure 2.1. Find (a) the single force that is equivalent to the two forces shown, and (b) the force that a third person would have to exert on the mule to make the net force equal to zero.

    asked by Anonymous on September 4, 2011
  72. physics

    Have to figure out 1 before 2 and don't know were to start? 1)The tension in the above string is 84.0 N. Calculate the mass of a 3 m long piece of the steel string. 2)Find the wavelength of the third harmonic of the guitar string described in the problem

    asked by Jamie on March 31, 2011
  73. Police Officer

    Can some one please explain tome why Police Officer should not assume? For example when a police Office is told of a dispute between two parties why should they not assume what they are hearing is not the truth. The only reason I could figure out is based

    asked by RAY on January 18, 2008
  74. geometry

    I am currently in a section of my geometry book titled Applying Properties of Similar Triangles. This is a very easy section but there is on problem where I cannot figure out (forgot) the next step. 1. z-4 12 --- = --- z/2 10 2.(z-4)10 = (z/2)12 3. 10z+40

    asked by Tami on December 8, 2008
  75. Physics

    A horizontal beam of length 4 m and mass 7.0 kg has a mass of 2.0 kg and width 0.8 m sitting at the end of the beam (see the following figure). What is the torque due to gravity (in N · m) on the beam–block system about the support at the wall? (Enter

    asked by Haya on April 15, 2017
  76. physics

    A small, m = 2.00 g plastic ball is suspended by a L = 25.0 cm long string in a uniform electric field, as shown in the figure below. If the ball is in equilibrium when the string makes a 14.0° angle with the vertical as indicated, what is the net charge

    asked by Mike on October 5, 2010
  77. Physics

    A uniform rod of mass 2.0 kg and length 8.4 m is free to rotate about one end (see the following figure). If the rod is released from rest at an angle of 60° with respect to the horizontal, what is the speed (in m/s) of the tip of the rod as it passes the

    asked by Haya on April 15, 2017
  78. gr8math

    We are learning about multiplying integers. 1. A hot air balloon is descending at a rate of 350m/min. How much higher was the balloon five minutes ago?? 2. The sum of 2 integers is -1.Their product is -12. What are the integers?? How would i figure these

    asked by rebecca on May 12, 2009
  79. physics

    A solid sphere rolls up an inclined plane of inclination angle 35 degrees. At the bottom of the incline, the center of mass of the sphere has a translational speed of 13 ft/s. How far (in feet) does the sphere roll up the plane (distance along the plane)?

    asked by Science on May 6, 2013
  80. math

    1. The table shows the number of wild strawberry plants in a particular forest t years after a forest fire. Use a graphing calculator to find the exponential function that best fits the set of data. Number of Wild Strawberry Plants years | wild strawberry

    asked by Mary on April 12, 2007
  81. English - help

    Which figure of speech os exemplified by lines 149-151 of the excerpt from The Odyssey, Part III? The slid his right hand down the cord and plucked it, / so the taut gut vibrating hummed and sang a swallow's note. A. Simile B. Metaphor C. Personification *

    asked by Cassie on January 16, 2014
  82. Algebra

    The perimeter of the larger table is 44 feet. what is the perimeter of the smaller table ?

    asked by Maria on October 11, 2017
  83. 7th grade

    if a perimeter of a garden is 82 feet. the length is 5 more than twice the width.what is th width of the garden?

    asked by Sylvia on August 30, 2010
  84. math

    The cubic feet of a cylinder that's 12 3/4 inches wide and 16 inches wide?

    asked by Anonymous on January 27, 2016
  85. math

    the length of a rectangle is 6 ffet more than twice the width. if the length is 24 feet, what is the width

    asked by antonio on April 11, 2011
  86. Math

    They have 20 pieces of 12 foot lumber. If they need 2 screws for every 3 feet of lumber, how many screws do they need?

    asked by Me on March 20, 2012
  87. math

    a rope has a lenght of 150 feet what is the lenght in yards of the rope

    asked by Anonymous on January 17, 2014
  88. Math

    a snake can grow up to 21 feet. This is 35% of its maximum length. What is the maximum length?

    asked by Clark on February 25, 2014
  89. math

    i got 12 feet long board and i cut 42 inches how long is the board now

    asked by sein on October 25, 2016
  90. math

    a car is driving at a speed of 60 mi/h. What is the speed of the car in feet per minute?

    asked by ty on November 28, 2010
  91. Math

    There are some rabbits and chickens in a farm. Together they have 35 heads and 94 feet. How many rabbits? How many chickens?

    asked by Prolly on July 31, 2014
  92. 9th Grade Biology

    You set up 5 samples that contained a range of sucrase concentrations but the same amount of substrate (sucrose). - The pH was kept constant in all tubes buy using the same amount of buffer. - The temperature was kept constant in all tubes (room temp) - A

    asked by Mellisa B on September 6, 2016
  93. Chemistry

    Which of the following does form a Group II cation? lead iron cobalt nickel How do you figure this one out? You must know what is in group II. Fe, Co, and Ni are in group III. Pb is in both group I and group II. Pb ppts as the chloride in group I and as

    asked by Chemistry on February 20, 2007
  94. English/Reading 10 HELP

    TO BUILD A FIRE Jack London Day had broken cold and gray, exceedingly cold and gray, when the man turned aside from the main Yukon trail and climbed the high earthbank, where a dim and little-traveled trail led eastward through the fat spruce timberland.

    asked by Ariel on June 7, 2010
  95. college physics

    A fisherman poles a boat as he searches for his next catch. He pushes parallel to the length of the light pole, exerting a force of 245 on the bottom of a shallow lake. The pole lies in the vertical plane containing the boat's keel. At one moment, the pole

    asked by molly on March 2, 2015
  96. Algebra proof

    Prove that if w,z are complex numbers such that |w|=|z|=1 and wz\=-1, then w+z/1+wz is a real number I so far i have determined that w and z both have to equal less than one, but i cannot figure out how to prove this. if wz does not equal one it must mean

    asked by Gem on March 31, 2015
  97. Algebra HELP!

    Solve the equation identify as an identity, an inconsistent equation or a conditional. My equation is 1-3/2x+7/4 I know the answer is Conditional {-2}, but I cannot figure out how to get it or even where to start.

    asked by Tim on March 23, 2008
  98. Algebra

    Solve the equation identify as an identity, an inconsistent equation or a conditional. My equation is 1-3/2x+7/4 I know the answer is Conditional {-2}, but I cannot figure out how to get it or even where to start.

    asked by Tim on March 22, 2008
  99. geometry

    A pentagon is a geometric figure with 5 sides. The lengths of the sides of a given pentagon are (6x + 2) cm, (3x + 2) cm, (2x) cm,(3x + 4) cm, and (8x – 4) cm. Which equation below describes the perimeter, P, of the pentagon in terms of x?

    asked by Anonymous on April 6, 2011
  100. math

    How do I figure out what the nth term is in a sequence? Exmaple: 1, 3, 5,7, What would be the 100th term? IF adding 2 to each would the formula be n+2? How to calculate 100th term?

    asked by Lauren on May 9, 2010