Questions Asked on
April 4, 2014

  1. Algebra

    A physics student stands at the top of hill that has an elevation of 37 meters. He throws a rock and it goes up into the air and then falls back past him and lands on the ground below. The path of the rock can be modeled by the equation y = –0.02x² +

    asked by Sandra
  2. Algebra

    A community group is planning the expansion of a square flower garden in a city park. If each side of the original garden is increased by 9 meters, the new total area of the garden will be 169 square meters. Find the length of each side of the original

    asked by Sandra
  3. Physics

    An asteroid is moving along a straight line. A force acts along the displacement of the asteroid and slows it down. The asteroid has a mass of 4.5× 104 kg, and the force causes its speed to change from 7000 to 5000m/s. (a) What is the work done by the

    asked by Elle
  4. Algebra - help

    A model rocket is launched from a roof into a large field. The path of the rocket can be modeled by the equation y = –0.06x² + 9.6x + 5.4 where x is the horizontal distance, in meters, from the starting point on the roof and y is the height, in meters,

    asked by Sandra
  5. statistics

    Dylan wants to determine a 90 percent confidence interval for the true proportion of high school students in the area who attend their home basketball games. How large of a sample must he have to get a margin of error less than 0.03? [To find n, use the

    asked by fm
  6. math

    The Smiths want to buy a 9 ft. by 12 ft. carpet and center it in a 15 ft. by 20 ft. room. Can a 3 1/2 foot by 12 foot couch be placed against one of the long walls of the room without touching the carpet?

    asked by justin
  7. Algebra

    Use the quadratic formula to solve the equation. If necessary, round to the nearest hundredth. x² – 21 = –4x • 7, 3 • –7, 3 • 7, –3 • –7, –3

    asked by Sandra
  8. Algebra

    DeSean throws a ball up with an initial vertical velocity of 30 feet per second from a platform that is at ground level. How long will the ball be in the air?

    asked by Kylie
  9. science

    which of the following examples does not demonstrate a change in velocity? an elevator coming to a stop as it reaches the top floor a cruise ship heading west at a constant speed a soccer ball passed across the field a train remains at a constant speed as

    asked by steve
  10. science

    Which of the following examples does not demonstrate a change in velocity? An elevator slows down in order to stop at the top floor ← A cruise ship travels west at a constant speed A soccer ball is passed across the field or ← A train remains at a

    asked by steve
  11. Calculus Help

    When a foreign object lodged in the trachea (windpipe) forces a person to cough, the diaphragm thrusts upward causing an increase in pressure in the lungs. This is accompanied by a contraction of the trachea, making a narrower channel for the expelled air

    asked by Selda
  12. Algebra

    Solve the equation using the Zero Product Property. (3x + 1)(x – 5) = 0 • and 5 • and –5 • and 5 • and –5

    asked by Sandra
  13. Biographical Essay Evaluation (Writeacher)

    Write a 3-paragraph Biographical Essay. Discuss your experiences with summer: the things you enjoyed and the things you missed about school. What I have written: "A strong sense of freedom is one of my favorite things about summer. It rids me of the stress

    asked by Anonymous
  14. science

    Which of the following pairs of objects would have the strongest gravitational pull? two buildings in the same city ← two tall buildings in different cities two stars very far away from each other two stars very close to each other my answer is c

    asked by steve
  15. Algebra

    I can't figure this out.. A physics student stands at the top of hill that has an elevation of 37 meters. He throws a rock and it goes up into the air and then falls back past him and lands on the ground below. The path of the rock can be modeled by the

    asked by Sandra
  16. physical science

    Which of the following pairs of objects would have the strongest gravitational pull? two buildings in the same city ← two tall buildings in different cities two stars very far away from each other two stars very close to each other my answer is c

    asked by steve
  17. physics

    Two manned satellites approaching one another at a relative speed of 0.500 m/s intend to dock. The first has a mass of 3.50 ✕ 103 kg, and the second a mass of 7.50 ✕ 103 kg. Assume that the positive direction is directed from the second satellite

    asked by Anonymous
  18. Science

    5.00 mol of solid A was placed in a sealed 1.00-L container and allowed to decompose into gaseous B and C. The concentration of B steadily increased until it reached 1.10 M, where it remained constant. Then, the container volume was doubled and equilibrium

    asked by Susie
  19. physical science

    a model train moving at a constant speed around a circular track has a constant velocity?

    asked by steve
  20. science

    When a basketball changes shape as it bounces off the floor is it because of balanced force acting on it?

    asked by steve
  21. math

    A customer earned $3,262.50 interest on a 9-month CD. How much was the opening deposit?

    asked by kay
  22. Math

    a wall in front of a house is shown below if 3/5 of the wall is brick how do you determine the height of the brick portion of the wall

    asked by Anonymous
  23. Math, Geomertry

    A total solar eclipse occurs when the moon passes between the earth and the sun, and the darkest shadow cast by the moon, called the umbra, hits the surface of the earth. If the umbra does not hit the surface, as shown in the following figure, then a total

    asked by Luis
  24. Statistics

    You take a trip by air that involves three independent flights. If there is an 67% chance each specific leg of the trip is on time, what is the probability all three flights arrive on time? (Round your answer to 3 decimal places.) Probability =??

    asked by Student
  25. Statistics

    The heights of 18 year old men are approximately normally distributed, with a mean of 67 inches and a standard deviation of 5 inches. What is the probability an 18 year old man selected at random is between 66 and 68 inches? Use FOUR decimal places.

    asked by Breeanna
  26. science

    what doesn't have to be measured in order to describe motion

    asked by steve
  27. Physics, science

    An electric kettle contain 1.5kg of water at 100 degree and powered by a 2.0kw electric element. He the thermostat of the kettle falls to operate, approximately how long will the kettle boil dry? (take the specific latent heat of vaporization of water as

    asked by Shedrack
  28. English

    In which sentence are the conjunctions used correctly? A. Either Fred nor John knew about the accident. B. The top award was given to neither Steve or Jim. C. Neither beauty nor popularity was considered in the contest. D. Mary enjoyed neither roller

    asked by NightShade
  29. Calculus Help Please!!!

    does the function satisfy the hypotheses of the Mean Value Theorem on the given interval? f(x) = 2x^2 − 5x + 1, [0, 2] If it satisfies the hypotheses, find all numbers c that satisfy the conclusion of the Mean Value Theorem. (Enter your answers as a

    asked by Uygur
  30. algebra

    divide 15x^2 + 10x -5 by 5x

    asked by anna
  31. grammar

    The hospitalization was prolonged because of the absence of any good choices for oral medications to treat his UTI.

    asked by Mia
  32. math

    The PJC department of McIntyre Company shows gross sales of $730,600 for computer supplies and $934,900 for general office supplies. It has determined that computer supplies cost $534,000 and that general office supplies cost $391,400. What is the total

    asked by tota
  33. math

    As a savings plan for college, when their son Bob was born, the Wilburs deposited $10,000 in an account paying 8% compounded annually. How much will the account be worth when Bob is 18 years old?

    asked by tota
  34. Physics

    An infinitely long thin metal strip of width w=12cm carries a current of I=10A that is uniformly distributed across its cross section. What is the magnetic field at point P a distance a=3cm above the center of the strip? I have tried using the integration

    asked by Joel
  35. Statistics

    You take a trip by air that involves three independent flights. If there is an 67% chance each specific leg of the trip is on time, what is the probability all three flights arrive on time? (Round your answer to 3 decimal places.) Probability=

    asked by Ryan
  36. Decorating today

    What tool can you use during the initial interview to gather information from a prospective client

    asked by Rasheena
  37. chemistry/science

    Not sure if i posted this but Need help with my pH calculations? 0.10 mol of solid sodium hydrogen carbonate and 0.20 mol of solid sodium carbonate are dissolved in the same beaker of water, transferred to a volumetric flask and made to 250.0 mL. The Ka

    asked by dan
  38. MATH

    Ella ordered 16 pizzas for a p. After the party,, there were 3 5/8 pizzas left. How much pizza was eaten? solve the problem

    asked by RAJ
  39. Physics

    a 5 kg crate falls from a height of 2.0 m into an industrial spring scale. When the crate comes to rest the compression of the spring is 24 cm. what is the spring constant?

    asked by Valerie
  40. Science/Biology

    Please check my answers: 1. Which of the following correctly states the relationship between monkeys and humans? A. Humans and monkeys evolved from apes. B. Humans evolved from monkeys. C. Humans and monkeys evolved from the same ancestor, which is now

    asked by Anon
  41. Math, Geometry

    The percent grade of a highway is the amount that the highway raises or falls in a given horizontal distance. For example, a highway with a four percent grade rises 0.04 mile for every 1 mile of horizontal distance. a. How many feet does a highway with a

    asked by Luis
  42. Math

    The percent grade of a highway is the amount that the highway raises or falls in a given horizontal distance. For example, a highway with a four percent grade rises 0.04 mile for every 1 mile of horizontal distance. a. How many feet does a highway with a

    asked by Jose
  43. Business statistics

    You take a trip by air that involves three independent flights. If there is an 67% chance each specific leg of the trip is on time, what is the probability all three flights arrive on time? (Round your answer to 3 decimal places.) Probability=

    asked by Student
  44. Algebra 2

    1.) According to the American College Test (ACT), results from the 2004 ACT testing found that students had a mean reading score of 21.3 and a standard deviation of 6.0. The scores are normally distributed. A student scores a 35. What percent of the data

    asked by Lanie
  45. math

    the compound amount on an investment of $8,500 at 12% interest, compounded quarterly, for 1 year.

    asked by tota
  46. Math

    An organization is planning a dance. The band will cost $400 and advertising costs will be $100. Food will be supplied at $2 per person. a. How many people need to attend the dance in order for the organization to break even if tickets are sold at $7 each?

    asked by Jose
  47. Algebra Help

    What is the value of c so that y = x² + 9x + c is a perfect square trinomial?

    asked by Sandra
  48. Statistics

    A survey of top executives revealed that 37% of them regularly read Time magazine, 21% read Newsweek and 38% read U.S. News & World Report. Eleven percent read both Time and U.S. News & World Report. What is the probability that a particular top executive

    asked by Ryan
  49. Calculas

    The profit obtained when x barbecues are sold is P(x) = 100 x − 3x^2 (lnx) dollars . Find the marginal profit when 4 are sold.

    asked by jake
  50. chemistry

    Plan how you would make 100mL of a buffer solution with a pH of 10.80 to be made using only sodium carbonate, sodium hydrogen carbonate and water. You should specify the amount of sodium carbonate and sodium hydrogen carbonate that you would use. Below is

    asked by dan
  51. geometry

    a a swimming pool having the shape of a rectangular solid has a length of 100 feet, a width of 32 feet,a depth of 8 feet. if the pool is 3/4 full with water,how many cubic feet of water are in the pool

    asked by Anonymous
  52. alg

    Sound intensity (loudness) varies inversely as the square of the distance from the source. If a rock band has a sound intensity of 100 decibels 25 feet away from the amplifier, find the sound intensity 50 feet away from the amplifier.

    asked by f
  53. Science

    Discuss how the structure of a virus correlates with its function.

    asked by Shauna
  54. Biographical Essay Evaluation (Writeacher)

    Write a 3-paragraph Biographical Essay. Discuss your experiences with summer: the things you enjoyed and the things you missed about school. What I have written: "A strong sense of freedom is one of my favorite things about summer. It rids me of the stress

    asked by Anonymous
  55. economics

    what are welfare payments or consumer subsides

    asked by Teacher
  56. Sentence Completion

    Which word best completes this sentence? 1. Although the biographer claimed to admire his subject, his writing had a ______ tone. A. Tumultuous B. Sentimental C. Condescending D. Poignant I think the word that best completes this sentence is either a. or

    asked by Anonymous
  57. chemistry

    Need help with my pH calculations? 1) 0.10 mol of solid sodium hydrogen carbonate and 0.20 mol of solid sodium carbonate are dissolved in the same beaker of water, transferred to a volumetric flask and made to 250.0 mL. The Ka for HCO3 – is 4.7 x

    asked by dan
  58. Calculus Help Please!!!

    Consider the following. f(x) = 8x(square root of (x − x^2)) Use a graph to find the absolute maximum and minimum values of the function to two decimal places.

    asked by Malkoc
  59. CHEM ABSTRACT

    I need to write an abstract for my chemistry lab for identifying an unknown acid, is there a generic list of what to do for an abstract? because mine are always to long

    asked by Amber
  60. English

    Determine Narrator's perspective They were standing under a tree, each with an arm round the other's neck, and Alice knew which was which in a moment, because one of them had "DUM" embroidered on his collar, and the other "DEE." "I suppose they've each got

    asked by Anonymous
  61. Math

    Here's a really tough question on Probabilities which I found on SnapQuiz! snapquiz.sg/viewQuestion.html?id=277 Is anyone able to explain the answer better?

    asked by Geoffrey
  62. science

    what type of friction does a maglev train reduce

    asked by steve
  63. health

    Anabolic steroids promote growth of skeletal muscle and the development of male sexual characteristics in ________. A. Males only B. Females only C. Both males and females D. Children only

    asked by mix_lks
  64. English

    1. Stop at the red light. 2. Stop on the red light. (Which preposition should we use?) 3. Turn slightly right. 4. This is a one-way street. (Are both grammatical?) 5. Fill it up with regular unleaded, please. 6. Fill her up with regular, please. 7. Fill it

    asked by rfvv
  65. Math, Geomertry

    A piece of a broken wheel is shown. It was taken to a machine shop to be replaced with a new “whole” wheel. Find the radius of the wheel AC=10cm, BD=3 cm and D is the midpoint of AC. Round to the nearest hundredth.

    asked by Luis
  66. physical science

    would 2 stars very far away from each other have a strong gravitational pull

    asked by steve
  67. Algebra

    What is the value of c so that y = x² + 9x + c is a perfect square trinomial?

    asked by Sandra
  68. Statistics

    A survey of top executives revealed that 37% of them regularly read Time magazine, 21% read Newsweek and 38% read U.S. News & World Report. Eleven percent read both Time and U.S. News & World Report. What is the probability that a particular top executive

    asked by Ryan
  69. Biographical Essay Evaluation (Writeacher)

    Write a 3-paragraph Biographicl Essay. Discuss your experiences with summer: the things you enjoyed and the things you missed about school. What I have written: "A strong sense of freedom is one of my favorite things about summer. Setting in only once the

    asked by Anonymous
  70. Math

    Each square represents 625 square feet, each line segment represents 25 feet. A galapagos tortoise must use 550 feet of fencing to enclose a space of 15,000.

    asked by Anna
  71. Maths

    If the 7th term of an AP is twice the third term and the sum of the first four terms is 42

    asked by Eny
  72. Physics

    A pitcher throws a 0.192-kg baseball, and it approaches the bat at a speed of 43.2 m/s. The bat does 69.8 J of work on the ball in hitting it. Ignoring air resistance, determine the speed of the ball after the ball leaves the bat and is 32.6 m above the

    asked by Elle
  73. Persuasive Speech

    I am doing a speech on why my college should add more bus shelters to the bus stops. So far I have a few points about more students using buses so less pollution and protecting students from the elements, talking about how if they are dressed nice for a

    asked by Rebekah
  74. Math

    one fourth of a box of cereal was shared equally among 3 people how much cereal did each person get ?

    asked by Anonymous
  75. English

    Determine the Narrator's perspective The huge man dropped his blankets and flung himself down and drank from the surface of the green pool. The small man stepped behind him. "Lennie!" he said sharply, got God sakes don't drink so much." Lennie continued to

    asked by Anonymous
  76. English

    Determine Narrator's perspective They were standing under a tree, each with an arm round the other's neck, and Alice knew which was which in a moment, because one of them had "DUM" embroidered on his collar, and the other "DEE." "I suppose they've each got

    asked by Anonymous
  77. alg

    Divide: (y3 − 44) ÷ (y + 2).

    asked by f
  78. PHYSICS

    A grinding wheel 0.3m in diametre has amass of 5kg is rotating at an angular velocity of 2300rev/min.what is the kinetic energy?

    asked by Abeje
  79. science

    Develop hypotheses predicting the effect of pyrite and coal on the acidity of water?

    asked by debie
  80. Math

    A piece of a broken wheel is shown. It was taken to a machine shop to be replaced with a new “whole” wheel. Find the radius of the wheel AC=10cm, BD=3 cm and D is the midpoint of AC. Round to the nearest hundredth.

    asked by Jose
  81. Physics

    I'm having trouble setting up/solving this physics problem? Can someone please help me? Thank you. A 4700 kg lunar lander is in orbit 45 km above the surface of the moon. It needs to move out to a 340-km-high orbit in order to link up with the mother ship

    asked by Walter
  82. ADVANCED WORD PROCESSING

    Sally will clear and set tabs in the Tabs dialog box. Desi will set and clear tabs on the Horizontal Ruler. Who is correctly setting and clearing tabs?

    asked by nina
  83. math lit,business studies,accounting and computer

    Can I be an accountant when doing these subjects?

    asked by pamela
  84. Calculus Help Please!!!

    Verify the given linear approximation at a = 0. Then determine the values of x for which the linear approximation is accurate to within 0.1. (Enter your answer using interval notation. Round your answers to three decimal places.) ln(1 + x) ≈ x Y1= I

    asked by Tanya
  85. Social Studies

    Read the speech below. It is a fictitious political speech by Peter, a candidate for the upcoming national election. Then answer the following questions: List all of the arguments in the speech List all of the non-arguments in the speech List all of the

    asked by Mary
  86. L.A

    Educating and caring for young children in changing society?

    asked by Soso
  87. Chemistry

    When you write rate laws, can you have a half-order?

    asked by Anonymous
  88. PreCal

    Solve Using Log Properties: 1/4 = 8^3x+5

    asked by Maria
  89. PreCal

    Please Can Someone Help Me Solve For x Using Log Properties: log(base 3) x*(x-80)=4

    asked by Maria
  90. science

    how the structure of a virus correlates with its function.

    asked by hov
  91. English

    Determine the narrator's perspective Harold Davis took a deep breath and slowly started to peel the gauze from the wound on his grandmother's leg. "Hold on Grandma. I'm almost done," he said quietly. "Don't worry, baby. It doesn't hurt too much," she

    asked by Anonymous
  92. English

    Determine the Narrator's perspective The previous night, make your plans for the next day and write them down...If you attend an exclusive Samurai's party and feel timid, you cannot do your part in making it a successful party. You had first better prepare

    asked by Anonymous
  93. English

    Determine the Narrator's perspective The previous night, make your plans for the next day and write them down...If you attend an exclusive Samurai's party and feel timid, you cannot do your part in making it a successful party. You had first better prepare

    asked by Anonymous
  94. helath

    The MTF survey has measured drug, alcohol, and cigarette use and related attitudes among adolescent students nationwide. What does MTF stand for? A. Monitoring the future B. Managing the functioning addicts C. Mentoring the future D. Maintaining the

    asked by mix_lks
  95. Calculus

    Find the polynomial end-behavior asymptote in the graph of f(x)=(2x^3 +6x-1)/(x+2)

    asked by bex
  96. Physics

    If an object has a work of 300J and a displacement of 20m, how would I determine the net force?

    asked by Dan
  97. Algebra

    Solve the equation by completing the square. x² – 7x – 4 = 0 • 7.53, –0.53 • –7.53, –0.53 • –7.53, 0.53 • 7.53, 0.53

    asked by Sandra
  98. English

    Determine the narrator's perspective Harold Davis took a deep breath and slowly started to peel the gauze from the wound on his grandmother's leg. "Hold on Grandma. I'm almost done," he said quietly. "Don't worry, baby. It doesn't hurt too much," she

    asked by Sue
  99. PHYSICS

    A grinding wheel 0.3m in diametre has amass of 5kg is rotating at an angular velocity of 2300rev/min.what is the kinetic energy?

    asked by Anonym
  100. ALG

    1 r = 1 r1 + 1 r2 for r2

    asked by T
  101. physical science

    is an elevator slowing down as it reaches the top floor a change in velocity?

    asked by steve
  102. algebra

    Solve for u: u − 2 u − 4 + 6 = u + u − 6 4 − u

    asked by TT
  103. algebra

    Simplify (2/3k)+(k/k+1) divided by (k/k+1) -(3/k)

    asked by TT
  104. alg

    Solve for u: u − 2/ u − 4 + 6 = u + u − 6/ 4 − u

    asked by TT
  105. Algebra

    Find the solutions to the system. y = x² + 5x + 6 y = 4x + 12 (1 point)

    asked by Sandra
  106. Statistics

    The National Center for Health Statistics reported that of every 894 deaths in recent years, 25 resulted from an automobile accident, 185 from cancer and 309 from heart disease. What is the probability that a particular death is due to an automobile

    asked by Ryan
  107. physics. PLEASE HELP

    Where do I start? Calculate the water pressure at the bottom of the 50-m {\rm m}-high water tower shown in the photo. Express your answer to two significant figures and include the appropriate units. The question says to neglect the pressure due to

    asked by Anonymous
  108. Physical science

    1) how does the electric force between two oposite charges changes when the distance between the charges is tripled? 2)how does the electric force between two oposite charges changes when the amount of one charge is doubled?

    asked by Melissa
  109. science

    How can water cause both mechanical and chemical weathering?

    asked by victoria
  110. math

    he compound amount on an investment of $8,500 at 12% interest, compounded quarterly, for 1 year.

    asked by tota
  111. PC

    A piece of a broken wheel is shown. It was taken to a machine shop to be replaced with a new “whole” wheel. Find the radius of the wheel AC=10cm, BD=3 cm and D is the midpoint of AC. Round to the nearest hundredth.

    asked by Jose
  112. Math

    The curvature of a circle with radius r is defined as Descartes’ formula gives a relationship between the curvatures of the four circles. What are Descartes’ formula and the curvature of a circle? What does the sign of the curvature of a circle mean?

    asked by Jose
  113. maths

    Find the lenght of the arc from t : 2 to t : 6 for x : 5t-3.y : 1 -3t, z : 4t 5.

    asked by sage
  114. math

    Put 0.25 1/3 3/4 & 49% in order from least to greatest

    asked by justin gonzalez
  115. MATH

    IF 810 BOYS WEED A PLOT OF LAND IN 4 YEARS, HOW MANY YEARS WOULD IT TAKE 1080 BOYS TO WEED THAT SAME PLOT OF LAND?

    asked by EMMANUEL
  116. Algebra need help

    I do not know how to do this - also please explain... What is the value of c so that y = x² + 9x + c is a perfect square trinomial?

    asked by Sandra