Questions Asked on
September 21, 2012

  1. algebra

    the spreadsheet shows the monthly revenue and expenses for a new business.use the models to predictt the month in which revenue will equal expense. month revenue expenses jan 4000 22,000 feb 9000 24,000 mar 13,000 25,000 apr 16,000 27,000 may 21,000 30,000

    asked by lilman
  2. Physics

    A ball is thrown from a point 1.0 m above the ground. The initial velocity is 19.6 m/s at an angle of 30 degrees above the horizontal. Find the maximum height of the ball above the ground. Calculate the speed of the ball at the highest point in the

    asked by Anonymous
  3. physics

    A shot-putter throws the shot with an initial speed of 15.5m/s at a 34 degree angle to the horizontal. calculate the horizontal distance traveled by the shot if it leaves the athlete's hand at a height of 2.20m above the ground.

    asked by Anonymous
  4. math

    The owner of a luxury motor yacht that sails among the 4000 Greek islands charges $630 per person per day if exactly 20 people sign up for the cruise. However, if more than 20 people (up to the maximum capacity of 90) sign up for the cruise, then each fare

    asked by Anastasia
  5. Physics

    In 1865, Jules Verne proposed sending men to the Moon by firing a space capsule from a 220-m-long cannon with final speed of 10.97 km/s. What would have been the unrealistically large acceleration experienced by the space travelers during their launch? (A

    asked by Kelly
  6. math

    a coffee company wants a new flavor of cajun coffee. how many pounds of coffee worth $10 a pound should be added to 20 pounds of coffee worth $3 a pound to get mixture worth $6 a pound

    asked by bashi
  7. math

    The weekly demand and supply functions for Sportsman 5 X 7 tents are given by the following respective functions where p is measured in dollars and x is measured in units of a hundred. Find the equilibrium quantity. Find the equilibrium price.

    asked by Anastasia
  8. chemistry

    A hot recrystallization solution is not filtered unless absolutely necessary.give reason.

    asked by david
  9. Physics Pre-Ap

    014 (part 1 of 2) You drop a stone from a position of rest. How far will it fall vertically in the first 2 s? The acceleration of gravity is 9.8 m/s 2 . Answer in units of m 015 (part 2 of 2) If you instead toss it horizontally at 2.7 m/s, how far will it

    asked by Maria
  10. math

    benjie spent 1/3 of his money on clothes and 1/4 of the remainder on food. if he had 180 pesos left, how much did he have first?

    asked by jeri
  11. Physics

    A person climbs from a Paris metro station to the street level by walking up a stalled escalator in 96.5 s. It takes 60.0 s to ride the same distance when standing on the escalator when it is operating normally. How long would it take for him to climb from

    asked by Laura
  12. chemistry

    When 47.5J of heat are added to 13.2 g of liquid, its temperature rises by 1.72 degrees C. What is the heat capacity of the liquid? A cook wants to heat 1.35kg of water from 32.0 degrees C to 100 degrees C. If he uses combustion of natural gas to heat the

    asked by Alyssa
  13. calculus

    a) Sketch a curve whose slope is always positive and increasing. b) Sketch a curve whose slope is always positive and decreasing. c) Give equations for curves with these properties. So for a, I drew a positive slope that was concave up. And for b, I drew a

    asked by Travis
  14. Physics

    During a car crash a 65kg person's head goes from traveling at 50km h-1 to stationary in 0.15s. (a)What is the magnitude of the average net force acting on the head of a person with a 4.5kg head? (b)How does this compare with the weight force acting on the

    asked by Ellie
  15. chemistry

    Vacuum filtration is avoided when crystals are isolated from a very volatile solvent. why?

    asked by david
  16. Accounting

    A $15 credit to Sales was posted as a $150 credit. By what amount is Sales in error? my answer is $135 overstated

    asked by Wilson
  17. math

    Kate is saving to take an SAT Prep course that costs $350 and saved $180 and she adds $17 to her savings each week. How many more weeks must she save to be able to afford the course? Need the answer right now!

    asked by Edward
  18. chemistry

    The suction of a vacuum filtration apparatus is broken before the vacuum is turned off.give reason.

    asked by david
  19. Chemistry

    If 6.0 liters of methane react with 12.0 liters of oxygen according to the equation CH4 + 2O2 → CO2 + 2H2O, and the temperature and the pressure are kept constant, which of the following is true? a. All the methane and oxygen react. b. Oxygen is in

    asked by Helen
  20. projectile motion

    a bullet is fired horizontally with an initial velocity of 600 m/s at a target located 300 m from the rifle. how much time is required for the bullet to reach the target? (B) using the approximate value of g=10 m/s squared how far does the bullet fall in

    asked by us
  21. chemistry

    An Erlenmeyer flask containing a hot solution is not tightly stoppered to prevent solvent loss during cooling. give reasons.

    asked by david
  22. math

    jim began a 131 mile bicycle trip to build up stamina for a triathlete competetion.unfortunately his bicycle chain broke, so he finished the trip walking. the whole trip took 4 hours. if jim walks at a rate of 3 miles per hour and rides at 37 miles per

    asked by bashi
  23. Chemistry

    Using the equation 4Fe + 3O2 -> 2Fe2O3, calculae the total mass of oxgen needed to react wih all of 0.55 g of iron.

    asked by Chelsey
  24. Science

    There are many human-caused losses of biodiversity, such as habitat destruction and introduction of invasive species. Are there any natural events that could alter the diversity index?

    asked by Dolphin69
  25. Physics

    An 8g bullet leaves a gun at 700ms-1. (a) what is the maximum height that this bullet could reach (ignoring air resistance)

    asked by Ellie
  26. probability

    a couple is planning to have three children. Find the probability that the couple will have: a.) 2 girls and 1 boy? b.) 2 girls followed by a boy? c.) at least 1 girl? please answer my question thank you very much, have a good day!

    asked by nitz
  27. College Math

    In a suburb, housing costs have been increasing at 5.2% per year compounded annually for the past 8 years. A house worth $260,000 now would have had what value 8 years ago?

    asked by Fernando
  28. Physics

    A steam catapult launches a jet aircraft from the aircraft carrier John C. Stennis, giving it a speed of 205 mi/h in 3.00 s. (a) Find the average acceleration of the plane. (b) Assuming the acceleration is constant, find the distance the plane moves.

    asked by Kelly
  29. Physics

    A baseball is hit so that it travels straight upward after being struck by the bat. A fan observes that it takes 3.20 s for the ball to reach its maximum height.

    asked by Kelly
  30. Physics

    1) On a plot of position x versus time t for an object’s motion, what corresponds to the object’s velocity at any given instant t1? A. slope at the point on the plot corresponding to t1 B. intercept on the horizontal axis C. inverse of the slope at the

    asked by Liz
  31. physics

    A roof tile falls from rest from the top of a building. An observer inside the building notices that it takes 0.12 s for the tile to pass her window, which has a height of 2.2 m. How far above the top of this window is the roof? m

    asked by Anonymous
  32. Chemistry

    I have 3 I don't understand how to do. A 33.2 g of iron ore is treated as follows. The iron in the sample is all converted by a series of chemical reactions to Fe2O3. The mass of Fe2O3 is measured to be 12.3 grams. What was the percent iron in the sample

    asked by Brett
  33. Linear Algebra

    Solve the following system using Gauss's algorithm (a) x1 + 2x2 + 4x3 + 6x4 = 3 2x1 + x2 + 3x3 = -6 -2x1 + x2 + 6x3 + 4x4 = -11 2x1 + x2 + x3 = 0 so the matrix will be: 1 2 4 6 3 2 1 3 0 -6 -2 1 6 4 -11 2 1 1 0 0

    asked by Robert
  34. physical scienece

    Does every moving body possess kinetic energy? Does every stationary body possess potential energy?

    asked by maria
  35. Physics

    A car is traveling at a constant negative velocity of 12.0 m/s. The driver steps on the brakes. The car slows to a stop. The car travels 10.0 m while it is slowing down. What is the magnitude of its acceleration? [HINT: Pay attention to direction.]

    asked by arcos15
  36. chemistry

    A molecule of CHCl3 (chloroform), has the same shape as a molecule of carbon tetrahydride, CH4. But carbon tetrahydride’s boiling point is -164º C and chloroform’s boiling point is 62 ºC. Explain the difference between the boiling points of the two

    asked by Anonymous
  37. Science

    How do elements such as chlorine, bromine, sulfur, and boron get into the ocean? A. runoff from rivers and streams B. excretions from marine organisms C. volcanic eruptions D. chemical weathering of rocks Reset Selection

    asked by Anonymous
  38. Physics

    Rain is falling steadily but there is no wind. You are in an automobile that moves on a straight, flat highway at a constant speed of 80 km/hr. You see from the drops on the side window that the rain is falling at an angle of 58° measured from vertical

    asked by josephz
  39. math

    Which exponent makes the statement true?

    asked by Anonymous
  40. Hillcrest High

    Matty Kaminsky owns a new Volvo. His June monthly interest was $400. The rate is 8 ½ percent. Matty's principal balance at the beginning of June is: (Use 360 days) (Points

    asked by Maury
  41. Physics

    A ball is thrown vertically upward with a speed of 15.0 m/s. (a) How high does it rise? (b) How long does it take to reach its highest point? (c) How long does the ball take to hit the ground after it reaches its highest point? (d) What is its velocity

    asked by Kelly
  42. social studies

    I need to write a short paragraph in which i use the following key terms: Patroon, Proprietary colony, Pacifist.

    asked by Danielle
  43. Physics

    An 8g bullet leaves a gun at 700ms-1. (a) what is the maximum height that this bullet could reach (ignoring air resistance)

    asked by Ellie
  44. Physics

    The Earth has a mass of 5.97 x10^24 kg and the Moon has a mass of 7.36 x10^22kg. The average distance between the center of the Earth and the center of the moon is 3.84 x10^8m. (a) How far away would the Moon need to be for the magnitude of the

    asked by Ellie
  45. Physics

    A duck has a mass of 2.8 kg. As the duck paddles, a force of 0.09 N acts on it in a direction due east. In addition, the current of the water exerts a force of 0.20 N in a direction of 47° south of east. When these forces begin to act, the velocity of the

    asked by Bob
  46. physics

    A woman at an airport is towing her 17.0 kg suitcase at constant speed by pulling on the strap at an angle θ above the horizontal. She pulls on the strap with a 26.0 N force, and the friction force on the suitcase is 14.0 N.

    asked by sean
  47. science

    a lead bullet at 100C strikes a steel plate and melts. what was its maximum speed? the specific heat of lead is 0.13 kJ/kg C

    asked by Anonymous
  48. Physics

    A duck has a mass of 2.8 kg. As the duck paddles, a force of 0.09 N acts on it in a direction due east. In addition, the current of the water exerts a force of 0.20 N in a direction of 47° south of east. When these forces begin to act, the velocity of the

    asked by Bob
  49. Physics

    A ball is thrown from a point 1.38 m above the ground. The initial velocity is 19.9 m/s at an angle of 33.8° above the horizontal. Find the maximum height of the ball above the ground. Calculate the speed of the ball at the highest point in the

    asked by Laura
  50. Chemistry

    A 1.5 gram sample of a gaseous hydrocarbon has a volume of 820 mL when measured at 227 oC and 2.50 atm. Which of the following is the formula for the gas?

    asked by Helen
  51. Calculus

    Determine the polar form of the complex number 3 - 2i. Express the angle theta in degrees, where 0

    asked by Anne
  52. ASU

    A two-tailed test is conducted at the 5% significance level. What is the P-value required to reject the null hypothesis? Answer: p

    asked by LWatson
  53. physics

    A 3 lb bucket containing 40 lb of water is hanging at the end of a 20 ft rope that weighs 4 oz/ft. The other end of the rope is attached to a pulley. How much work is required to wind the length of rope into the pulley, assuming that the rope is wound onto

    asked by Anonymous
  54. Physics

    A rock is thrown vertically from the edge of a cliff that is 500 ft high. It takes 6.5 seconds for the rock to hit the ground at the base of the cliff. Assume air resistance is negligible. (a) What was the initial velocity (magnitude and direction) of the

    asked by josephz
  55. math

    if cotx+tanx=a and secx-cosx=b then prove that (a^2b)^0.6667 -(ab^2)^0.6667=1

    asked by zohera
  56. Physics

    A tall strongman of mass m = 93 kg stands upon a scale while at the same time pushing on the ceiling in a small room.If the scale reads 1062 N (about 239 lb), what is the magnitude of the normal force that the ceiling exerts on the strongman?

    asked by Anne
  57. economics

    Suppose the president is attempting to decide whether the federal gov should spend more research to find a cure for heart disease. How should policy makers determine the amount of money that should be allocated for research curing heart disease? they

    asked by jamma
  58. physics

    a couple part in a car on moonlit evening. Find that their car is stop in the sand. The women having studied physics, ties a rope to the car's bumper and stretches it around a tree in front of a car. She then pushes with 200 newton force against the

    asked by zianna
  59. physics

    A high diver of mass 50.0 kg steps off a board 10.0 m above the water and falls vertical to the water, starting from rest. If her downward motion is stopped 2.10 s after her feet first touch the water, what average upward force did the water exert on her?

    asked by yeen
  60. Physics

    A car can be driven around a 120 m radius curve at constant speed without sliding if the maximum centripetal acceleration is 0.130g. (a) What is the maximum speed that the car can travel around the curve without sliding? (b) If the car was on a circular

    asked by josephz
  61. Physics

    Two 30kg children in a 20 kg cart are stationary at the top of a hill. They start rolling down the 80m tall hill and they are traveling at 30 km h-1 when they reach the bottom. (The cart had brakes!) How much work was done on the cart by friction during

    asked by Ellie
  62. Business Calculus

    A rectangular garden of area 480 square feet is to be surrounded on three sides bya brick wall costing $12 per foot and on one side by a fence costing $5 per foot. Find the dimensions of the garden such that the cost of the materials is minimized.

    asked by fran
  63. Pre-Ap Physics

    A rock is thrown upward at 51.1◦ with respect to the horizontal. As it rises, its vertical component of velocity 1. remains unchanged. 2. decreases. 3. increases. 4. Unable to determine.

    asked by Maria
  64. Science

    Can someone tell me if this is correct: How many forces act on an upwardly tossed coin when it gets to the top of its path? A. one the force due to gravity B. two gravity & the force in the coin itself C. three gravity the coins internal force & a

    asked by Sue
  65. Physics

    A crane is lifting a 500kg payload straight up at a constant speed of 0.7ms-1. (a)What is the power output of the crane. (ignoring losses)? (b)If it takes the cran2 2 minutes to raise the payload to its final height, how far above the ground is this? (c)If

    asked by Ellie
  66. physics

    a projectile is shot from the edge of a cliff h=145m above ground level with an initial speed of vo=135m/s at an angle of 37.0 with the horizontal. determine time taken to hit point p at ground level. determine the range of x of the projectile as measured

    asked by Anonymous
  67. Chemistry

    A mixture of O2 and SO2 is confined in a vessel at equilibrium. Which statement describes the conditions that are true for the mixture? I. The mass of SO2 is greater II. The average molecular velocity of the O2 is greater III. The average kinetic energy of

    asked by Helen
  68. statistics

    Lilly collects data on a sample of 40 high school students to evaluate whether the proportion of female high school students who take advanced math courses in high school varies depending upon whether they have been raised primarily by their father or by

    asked by LWatson
  69. Physics

    A juggler performs in a room with a ceiling 2.71 m above hand level. What is the maximum upward speed (in m/s) which she can give a ball without letting it hit the ceiling? _________m/s

    asked by arcos15
  70. Algebra

    Eva invested a certain amount of money at 12% interest and $1500 more than that amount at 13%. Her total yearly interest was $800. How much did she invest at each rate?

    asked by Krish
  71. Physics

    A car is traveling at a constant negative velocity of 12.0 m/s. The driver steps on the brakes. The car slows to a stop. The car travels 10.0 m while it is slowing down. What is the magnitude of its acceleration? [HINT: Pay attention to direction.]

    asked by Natalie Delgado
  72. calculus 2

    Find the volume of the solid formed by rotating the region enclosed by y=e^(5x) , \ y=0, \ x=0, \ x=0.8 around the y-axis Please help, i have been attempting these problems for a couple of days

    asked by bobby
  73. Math

    A 3-ounce serving of tuna fish provides 24 grams of protein. How many grams of protein are in a 10-ounce serving of tuna fish?

    asked by Karen
  74. Calculus

    The displacement (in meters) of a particle moving in a straight line is given by the equation of motion s = 5/t2, where t is measured in seconds. Find the velocity of the particle at times t = a, t = 1, t = 2, and t = 3. (a) Find the average velocity

    asked by Roscoe
  75. physics

    A passenger sitting in the rear of the bus claims that he was injured when the driver slammed on the brakes, causing a suitcase in front of the bus to come flying towards him. If you were the judge in this case, what disposition would you make and why?

    asked by krizha
  76. calc 3

    The length script l, width w, and height h of a box change with time. At a certain instant the dimensions are script l = 7 m and w = h = 5 m, and script l and w are increasing at a rate of 6 m/s while h is decreasing at a rate of 4 m/s. At that instant

    asked by Becky
  77. chemistry grade 11

    A molecule of CHCl3 (chloroform), has the same shape as a molecule of carbon tetrahydride, CH4. But carbon tetrahydride’s boiling point is -164º C and chloroform’s boiling point is 62 ºC. Explain the difference between the boiling points of the two

    asked by leah
  78. physics

    It takes you 7.3 min to walk with an average velocity of 1.5 m/s to the north from the bus stop to the museum entrance. How far did you walk? Answer in units of m

    asked by Carl
  79. Governement

    Please explain the Voting Rights Act of 1965

    asked by Vicky
  80. Le math

    Tomas bought some fruit at the market. He bought twice as many melons as apples. He bought 12 more melons than oranges. He bought 11 apples. How many pieces of fruit did Tomas buy?

    asked by Makani
  81. Physics

    A barge is hauled along a straight-line section of canal by two horses harnessed to tow ropes and walking along the tow paths on either side of the canal. Each horse pulls with a force of 490 N at an angle of 16° with the centerline of the canal. What is

    asked by Anonymous
  82. Chemistry

    A 1.50- gas sample at 722 and 25.0 contains 7.56 radon-220 by volume. Radon-220 is an alpha-emitter with a half-life of 55.6. How many alpha particles are emitted by the gas sample in 3.00 minutes?

    asked by Diamond
  83. Physics

    You are conducting an experiment inside a train car that may move horizontally along rail tracks. A load is hung from the ceiling on a string. The load is not swinging, and the string is observed to make a constant angle of with the horizontal. No other

    asked by JUAN911
  84. business law

    A music club sends you an advertisement. You select ten "free" downloads and agree to become a member. When you get your free downloads, you decide to resign. Does the music club have any rights against you? Why?

    asked by Joe
  85. chemitry

    A block of aluminum with a volume of 98.5 cm3 absorbs 67.4 J of heat. If its initial temperature was 32.5°C, what is its final temperature? (density of aluminum = 2.70g/cm3)

    asked by Alyssa
  86. Social Studies

    The key terms Patroon, Proprietary colony, and Pacifist are described in the history of Pennsylvania but checking for understanding. Does that mean they want me to copy ashort paragraph from the same Pennsylvania subject or write an example from my own

    asked by Danielle
  87. PHYSICS

    A car is moving in the +x direction with the following position equation of motion: x = 5.41(m/s)t - 2.7(m/s^2)t^2. (a) What is the initial velocity of the car? 5.41 m/s (b) What is the acceleration of the car? -5.4 m/s^2 (c) At what time does the car come

    asked by arcos15
  88. physics

    a couple part in a car on moonlit evening. Find that their car is stop in the sand. The women having studied physics, ties a rope to the car's bumper and stretches it around a tree in front of a car. She then pushes with 200 newton force against the

    asked by Carl
  89. physics

    Research on the scientific principle involved in the inflation of an airbag. Explain how this device protects the driver and the front passenger from injuries.

    asked by krizha
  90. science

    how to prepare 0.100M HCL solution when laboratory grade concentrated by hydrochloric acid has concentration of 37%.what volume of acid is necessary to prepare 500mL of 0.100M of HCL

    asked by Qyla
  91. statistics

    Lilly collects data on a sample of 40 high school students to evaluate whether the proportion of female high school students who take advanced math courses in high school varies depending upon whether they have been raised primarily by their father or by

    asked by Anonymous
  92. statistics

    suppose 45 students in an organization are male and 55 are female. Ten females and 15 males in the organization are graduating students. What is the probability that a: a.) student chosen at random is male or a graduating student? b.) students chosen at

    asked by nitz
  93. Chemistry

    A 28.4288 g sample of impure magnesium car- bonate was heated to complete decomposition according to the equation MgCO3(s) ! MgO(s) + CO2(g) . After the reaction was complete, the solid residue (consisting of MgO and the original impurities) had a mass of

    asked by Brett
  94. Physics

    A group of engineering students constructs a slingshot to launch water balloons. The angle of launch is 30° and the initial velocity of the balloon is 14 m/s. The students launch a balloon from the roof of a building and the balloon lands 42 m away from

    asked by josephz
  95. Physics

    A car travels at 64 mi/h when the brakes are suddenly applied. Consider how the tires of a moving car come in contact with the road. When the car goes into a skid (with wheels locked up), the rubber of the tire is moving with respect to the road;

    asked by Anne
  96. Stats

    The time you wait in a bank until you are served by a teller is exponentially distributed with mean 10 minutes. Calculate the probability that you will have to wait between 5 and 15 minutes.

    asked by Teniche
  97. physics

    Research on the scientific principle involved in the inflation of an airbag. Explain how this device protects the driver and the front passenger from injuries.

    asked by krizha
  98. visual logics

    I am trying to write a program to generate a diamond shape each line has odd number of circles. have created the left side of diamond but cant figure how to nest info to make it a complete diamond

    asked by darrick
  99. Physics

    An object moves such that its x-coordinate is given by x(t) = 6.0 m - (1.5 m/s2) t3 and its y-coordinate is given by y(t) = (8.0 m/s) t - (1.0 m/s2) t2. What is the acceleration of the object at t = 3.5 seconds? Express your answers in unit vector

    asked by josephz
  100. public speaking

    For communication to take place, there has to be: A. transmission of the message. B. medium. C. sharing of meaning. D. absence of noise.

    asked by Anonymous
  101. Physics

    An object moves in the +x direction at a speed of 30 m/s. As it passes through the origin, it starts to experience a constant acceleration of 3.7 m/s2 in the -x direction. (b) How much time elapses before the object returns to the origin? _____________s

    asked by arcos15
  102. precal help

    The numerator of a fraction is four less than the denominator The sum of the fraction and its reciprocal is 5/2 Find the numerator and denominator if each is a positive integer

    asked by Anonymous
  103. biochemistry

    The pH of 0.02M solution of a weak acid was measured at 7.6. What is the [OH-] in this solution? B) The Ka for benzoic acid is 6.4 x 10-5M. 150 ml of 0.1 M NaOH is added to 200 ml of 0.1 M benzoic acid, and water is added to give a final volume of 1 L.

    asked by Emma
  104. accounting

    Salt River Copmany is evaluating a capital expenditure propsal that has the following predicted cash flows: Intial investment $(43,270) Operation Year 1 20,000 Year 2 30,000 Year 3 10,000 Salvage 0 a. Using a discount rate of 14 percent, determine the net

    asked by dillon
  105. statistics

    A two-tailed test is conducted at the 5% significance level. What is the right tail percentile required to reject the null hypothesis?

    asked by Anonymous
  106. statistics

    A two-tailed test is conducted at the 5% significance level. What is the right tail percentile required to reject the null hypothesis?

    asked by Anonymous
  107. math

    if you have a cylinder is that is 3 1/2 in. diameter and 3 in. tall what is the total cubic inches

    asked by rebecca
  108. probability

    a pair of dice is tossed. What is the probability of getting a total of 6?

    asked by nitz
  109. Chemistry

    A 1.50- gas sample at 722 and 25.0 contains 7.56 radon-220 by volume. Radon-220 is an alpha-emitter with a half-life of 55.6s

    asked by Diamond
  110. statistics

    A two-tailed test is conducted at the 5% significance level. What is the right tail percentile required to reject the null hypothesis? Show work to understand.

    asked by Anonymous
  111. physical science

    A 70-kg man and a 50-kg woman are in a 60-kg boat when its motor fails. The man dives into the water with a horizontal speed of 3m/s in order to swim ashore. If he changes his mind, can he swim back to the boat if his swimming speed is 1m/s? If not, can

    asked by maria
  112. geo

    the uneven distribution of population in russia is due to;a.government laws about housing. b.the country's level of economic development. c.the physicxal environment. d.the country's standard of living

    asked by Anonymous
  113. chemistry

    how many grams of carbon dioxide can be produced by burning 7.04moles of propane

    asked by gabrielle
  114. probability

    a disk drive is randomly selected from 50 available disk drives, of which five are defective. What is the probability that it is not defective?, hope you answer this, thanks! :)

    asked by nitz
  115. physics

    A car decelerates from 30 m/s and rests at 6 seconds in a period of 5 m/s. How far did the car travel during that time.

    asked by Anonymous
  116. physical education

    why is aerobic exercise the best exercise of total weight loss and fitness training?

    asked by ronaldo
  117. chemistry

    why is nh3polar but bacl2 non polar

    asked by Bijay
  118. Phamacy math

    One teaspoonful diluted to a quart results in a 1/5000 solution. What is the amount of potassium permanganate in grams required to fill this prescription?

    asked by Nick
  119. Chemistry

    Given 2 moles of NaCl, find the number of moles of Na. If you could show me the exact steps, that would be much appreciated.

    asked by Ely
  120. Chemistry

    How many hydrogen bonds can an ethanol molecule form to neighboring water molecules ? Why?

    asked by Lisa
  121. accounting

    Salt River Copmany is evaluating a capital expenditure propsal that has the following predicted cash flows: Intial investment $(43,270) Operation Year 1 20,000 Year 2 30,000 Year 3 10,000 Salvage 0 a. Using a discount rate of 14 percent, determine the net

    asked by dillon
  122. Calculus

    I was able to solve (e), this is the only one I don't get. Determine whether the series is convergent or divergent and say what test you used to solve it. (d) sum n=1 to infinity (5n)^(3n) / (5^n + 3)^n

    asked by Paul
  123. social studies

    With the vital assistance of _______, Theodore Roosevelt established the first comprehensive national conservation policy. A. Upton Sinclair B. William Howard Taft C. Gifford Pinchot D. Samuel Hopkins Adams

    asked by Abby
  124. Math

    How Do I Do An Expanded Algorithm For 23x17 ?

    asked by Bobby
  125. physics

    A group of engineering students constructs a slingshot to launch water balloons. The angle of launch is 30° and the initial velocity of the balloon is 14 m/s. The students launch a balloon from the roof of a building and the balloon lands 42 m away from

    asked by joseph
  126. vocabulary

    I have to use propose to answer this question. Change one letter to make another word for market or store.

    asked by tyra
  127. Physics

    A car is moving in the +x direction with the following position equation of motion: x = 5.41(m/s)t - 2.7(m/s^2)t^2. (a) What is the initial velocity of the car? 5.41 m/s (b) What is the acceleration of the car? -5.4 m/s^2 (c) At what time does the car come

    asked by arcos15
  128. Physics

    A 1560 kg car is traveling with a speed of 14.5 m/s. What is the magnitude of the horizontal net force that is required to bring the car to a halt in a distance of 53.3 m?

    asked by Kellie
  129. precal help

    The numerator of a fraction is four less than the denominator The sum of the fraction and its reciprocal is 5/2 Find the numerator and denominator if each is a positive integer

    asked by Anonymous
  130. physics

    how much negative work is done by friction on a 2000-kg car if you slow down from 20 m/s to 10 m/s?

    asked by Anonymous
  131. accounting

    The journal entry to record the withdrawal of cash by Sue Snow, the owner, to pay a personal utility bill would include a debit to __________ and a credit to __________.

    asked by t
  132. word power

    8. Often applied to politicians, the term _______ suggests hiding one's feelings while obscuring or "spinning" facts. A. simulate B. dissimulate C. vacillate [D. dissemble]

    asked by jake
  133. Physics

    Evaluate [r]; i.e., the units of r, in the expression r =v (s - a) (s - b) (s - c)/s where s =.5 (a + b + c) , and a, b, and c have units of meters. 1. [r] =1/m^1/3 2. [r] = m^1/2 3. [r] = m 4. [r] = m^2 5. [r] = m^1/3 6. [r] =1/m^2 7. [r] = m^3 8. [r]

    asked by hello
  134. essay

    Imagine that you are hosting a group of exchange students next term. You are responsible for welcoming the students to campus and acquainting the students with life on campus socially as well as academically. Develop a "Welcome Letter" for the visiting

    asked by rose
  135. Question regarding college

    Alright, I have a question. Last year was my freshman year in high school, and I didn't really care about my grades. I wasn't failing, but they werent excellent. They were about average. This year, I am making almost all a's, im in honors classes, and im

    asked by Bryce
  136. Physics

    An elevator is moving at 1.1 m/s as it approaches its destination floor from below. When the elevator is a distance h from its destination, it accelerates with a = −0.55 m/s2,where the negative sign indicates a downward vertical direction. Find h.

    asked by Anne
  137. Physics

    A mass with M = 122kg is attached to the bottom of a block-and-tackle pulley system.How much tension force is needed to keep the mass at its current position?

    asked by Anne
  138. All

    Any websites for study guides for drivers ed?

    asked by Unknown
  139. college math

    its estimated that between 1815 and 1975 some 2,580,071,000 copies of the bible were printed. write the word name for 2,580,071,000.

    asked by lucy
  140. Algebra

    Solve for x: logx +log(x-5)=2

    asked by Fernando
  141. Chemistry

    A 1.00 g sample of enriched water, a mixture of H2O and D2O, reacted completely with Cl2 to give a mixture of HCl and DCl. The HCl and DCl were then dissolved in pure H2O to make a 1.00 L solution. A 25.00 mL sample of the 1.00 L solution was reacted with

    asked by Adam
  142. mathematics

    give the image for r= sin1/2theta

    asked by sin
  143. Algebra 2

    In the graph of y=kx^2 what type of number is k? I think it's the rate of change but I'm not sure

    asked by SoccerStar
  144. Physics

    a bb gun has a muzzle velocity of 325 ft/sec. How long will it take the bb to hit the ground? How far will the bb travel?

    asked by Isis
  145. literature

    What does the poet find ironic about her situation? In the poem In memory of M.B by Anna Akhmatova.

    asked by Angelica
  146. literature

    The most difficult concept in this poem may be that of heaven being the old abode of loneliness. What do you think that means? The poem Loneliness by Rainer Maria Rilke.

    asked by anonymous
  147. Finance

    You have reviewed the books of Anderson Incorporated and learned the following: 1.) Quick Ratio is 1.4 2.) Current Ratio is 3.1 3.) Inventory Turn-Over is 4.9 times 4.) Current Assets are $820,000 5.) Cash and equivalents are $115,000 Using this

    asked by Nk
  148. math

    tell whether the given rates are equilivent... 32 ft/sec; 192 ft/min. ________________________________ 8.4 gal/day; 2 qt/hr..

    asked by Carly
  149. Le math

    Annette wanted to buy new carpet for her L-shaped room. Which two expressions could be used to calculate the area of her room?

    asked by Makani
  150. Drama

    I'm Molly Whuppie in my school's production of Great American Tall Tales. They didn't provide any character descriptions and I'm not sure how I should approach this character. Any ideas?

    asked by Kelsie
  151. math

    the world record for the 100 meter butterfly swim set in 1999 was 51.81 sec. What was the average rate per second?

    asked by Carly
  152. health

    Please post a 150-300-word response to the following discussion question by clicking on Reply. What are some of the challenges to achieving overall health and wellness? How can you overcome these challenges?

    asked by paul
  153. instrumental analysis

    How long would it take to discharge a 0.026 microFarad capacitor to 6.4 % of its full charge through a resistance of 1.7 MOhm?

    asked by sam
  154. health

    A. Fad diet B. Low-carb diet C. Stick-to-it diet D. Counting calories diet =B What are other factors that contribute to being overweight and obese besides diet and behavior? A. Personality and temperament B. Physical fitness and athletics C. Environment

    asked by felica
  155. Theatre History paper

    Can someone tell me where I can Find reliable sources for Electra by Eurpides ?

    asked by renee
  156. physics

    what is the graph of potential energy and kinetic energy against distance?

    asked by edward
  157. Science

    If a yo yo has a speed of 3 m/s at the top of the circle, whose radius is 80 cm, What is its speed at the bottom

    asked by Andtrew
  158. business law

    B. Telephones S.'s store and orders certain goods that S. delivers to B. Neither party says anything about the price or payment terms. B. does not pay S. Is S. entitled to be paid by B.? Why?

    asked by Joe
  159. English

    Would you use a or an: A(n) Olympic Champion's signature.

    asked by Jenny
  160. science

    scientist do experimental tests more than once

    asked by james
  161. social studies

    i need 5 major events that occurred during presidency of Franklin pierce. And i need 3 major accomplishments during presidency of Franklin pierce

    asked by james
  162. math

    the world record for the 100 meter butterfly swim set in 1999 was 51.81 sec. What was the average rate per second? thx:)

    asked by hannah
  163. Art

    What style did Filippo Brunelleschi use?

    asked by Maria
  164. 7th Grade Science

    Please help me with these questions. This is not homework. I am just trying to figure out some things that I need help with. When separating mixtures what is filtration? what is distillation? what is crystallization? what is chromatography? Thank you,

    asked by sk8rgurl
  165. mathematics

    what is the square and square root of zero

    asked by edward
  166. math

    15(5x -4)2^(1) -10(5x - 4)

    asked by amala
  167. law/421

    How are the UCC requirements different for a merchant versus a nonmerchant

    asked by at
  168. math help?

    2x+4 (2x+6) I did this and ended up with a decimal number. I distributed then combined like terms.

    asked by sara
  169. New Fedralism

    From the 1970s to the present, a shift in the evolution of public policy moved toward a New Federalism. How did this effect public policy

    asked by Anonymous