Questions Asked on
September 3, 2011

  1. Physical Science

    Two tugboats are towing a ship. each exerts a horizontal force of 5 tons and the angle between their tow ropes is 90. what net force is exerted on the ship?

    asked by Sheryl
  2. Math OPTIMIZATION

    A plastics firm has received an order from the city recreation department to manufacture 9,000 special Styrofoam kickboards for its summer swimming program. The firm owns 10 machines, each of which can produce 30 kickboards an hour. The cost of setting up

    asked by Willoby
  3. math

    A movie theater seats 500 people. For any particular show, the amount of money the theater makes is a function m(n) of the number of people, n, in attendance. If a ticket costs 2 dollars, find the domain and range of this function. domain: ?≤ n ≤?

    asked by sara
  4. Chemistry

    Suppose you have two 100- graduated cylinders. In each cylinder there is 44.0 of water. You also have two cubes: One is lead, and the other is aluminum. Each cube measures 1.5 on each side. After you carefully lower each cube into the water of its own

    asked by Sam
  5. Science

    Two tugboats are towing a ship. Each exerts a horizontal force of 5 tons and the angle between their towropes is 90°. What net force is exerted on the ship?

    asked by Chris
  6. Chemistry

    How many cubic centimeters of olive oil have the same mass as 1.60 L of gasoline? Density of gasoline: .66 g/ml Density of olive oil: .92 g/ml

    asked by Anonymous
  7. Algebra

    22-5c+8;3 what's the procedure of doing this?

    asked by Willette
  8. chem

    The label on a 1-pint bottle of mineral water lists the following components. If the density is the same as pure water and you drink 5 bottles of water in one day, how many milligrams of each component will you obtain? fluoride 0.08 ppm ppm=mg/kg I just

    asked by Anonymous
  9. PreCal

    Write the polar equation in rectangular form r=-12 sinè

    asked by Kathy
  10. PHYSICS

    A square wire loop 10.0 cm on each side carries a clockwise current of 15.0 A. Find the magnitude and direction of the magnetic field B at its center due to the four 1.20 mm wire segments at the midpoint of each side?

    asked by KAIT
  11. bus/stats

    a sample of the personal files of eight male employees revealed that, during a six-month period, they lost the following number of days due to illness: 2,0,6,3,10,4,1 and 2. Calculate the standard deviation of the above sample? the means deviation is

    asked by tim
  12. calculus

    Factor and solve for x 1) x^4 - 9x^2> 0 2) 4x2^x - x^3 2^x

    asked by Anonymous
  13. algebra/math

    Find the amount of interest and the monthly payment for the loan. Purchase a car for $42,700 at 2.5% add-on rate for 5 years. (Round your answers to the nearest cent.) $ interest $ per month

    asked by apryl
  14. calculus

    Find the points of intersection of the curves y=2sin(x-3) and y=-4x^2 + 2

    asked by Bob
  15. math

    I am taking a job related test consisting of several math sections. I have been out of school for quite some time and am looking to find the easiest place to get tips and tutorials to solve these questions. The topics are as follows: multiplication and

    asked by jay
  16. PreCal

    A surveyor records the polar coordinates of the location of a landmark as (40, 62°). What are the rectangular coordinates? Round each coordinate to the nearest hundredth.

    asked by Jack
  17. PHYSISC

    Two parallel, straight wires that are very long are separated by a distance of 0.065 m and carry currents of I1 =15 A and I2 =7.0A. Find the magnitude and direction of the force that the magnetic field of wire 1 applies to a 1.5-m section of wire 2 when

    asked by KAIT
  18. physics

    displacement for walking 100m east than 125m west

    asked by pat
  19. trig

    If sin T = 1/2, then the value of sinT ( sinT - cosecT ) is

    asked by alex
  20. Chemistry

    You have two beakers, one filled to the 100-mL mark with sugar (the sugar has a mass of 180.0 g) and the other filled to the 100-mL mark with water (the water has a mass of 100.0 g). You pour all the sugar and all the water together in a bigger beaker

    asked by Alexandria
  21. English

    Hi I have an assignment in English. I am suppose to write a paragraph. "You've applied for a specific job in your field of study. The Human Resources Department arranges an interview and tells you to bring with you a polished piece of writing for them to

    asked by Susanne
  22. survey of mathematics

    in a survey of 24 college student,it was found that 16 were taking and english class,17 were taking math class,and 10 were takin both english nad math.how many student were taking a math class only.

    asked by laporisha
  23. Physical Science

    The brakes of a care are applied to give it an acceleration of -3m/s^2. The car comes to a stop in 5 s. What was its speed when the brakes were applied?

    asked by Sheryl
  24. chemistry

    so this problem tells me to find the thickness of one atomic layer of gold using the volume occupied by one gold atom (1.73*10^-23) which i found from the previous problem idk but is thickness the same as volume? from the previous question it also gives me

    asked by Henry
  25. math

    how do i do practice A

    asked by keron
  26. Simple math question!

    h(0.5) if h(x) = 6-2x^3 So I set it up as 6 - 2(0.5^3) correct? That way only the (0.5) is being cubed, and THEN multiplied by 2? Or does it mean to cube the entire product? Such as (2 x 0.5)^3? Ugh simple things like this always get me! I can solve it

    asked by Mandy
  27. trig

    Write the expression and evaluate. There should only be one answer which should match the range of the inverse trig function. Sec^-1(-2) sec^-1(-sqrt2) Cos^-1((-sqrt3)/2) Tan^-1(-sqrt3) Could someone explain how to get the answer as well please.

    asked by Anonymous
  28. chemistry

    This has to do with law of conservation of mass I believe but it stumps me. 50g or iron reacts with 21g of oxygen to form how many gram of iron oxide? Is the answer 71g or 29g

    asked by ben
  29. Chemistry

    Thank you very much for your assistance preemptively. My question has to do with law of conservation of mass. A 50g sample of iron reacts with 21g of oxygen to from how many grams of iron oxide? Is the answer maybe 71g or 29g. This is stumping me.

    asked by ben
  30. trig

    Write the expression and evaluate. There is only one answer whIch should match the range of the inverse trig function. Sec^-1(-2) Sec^-1(-sqrt2) Tan^-1(-sqrt3) Tan^-1(sqrt3)

    asked by Anonymous
  31. Biochemistry

    Which of the following peptide fragments would you expect to find buried in the center of a water soluble protein? Explain your answer. a) DEGKRGDK b) ALVWIFLF

    asked by Jenna
  32. londontowne

    divide the product of 8 and 1/2 by .02

    asked by Cynthia
  33. math 30 pure

    determine the zeros(to the nearest tenth) and the domain and range: y=-2x+4 and y=-x2(squared) - 3x - 4

    asked by Cheryl
  34. Another simple math problem (y=mx+b)

    Write an equation in slope-intercept form for each line described. (I just need my work checked, thank you!) The slope = 1/2, and the line passes through the point (3, -1) First I used point slope formula y-ysub1 = m(x-xsub1) y+1=1/2(x-3) then, went on to

    asked by Mandy
  35. Psychology

    When a boxer is knocked out, it is believed that his _____ has been affected.

    asked by Monique
  36. Science

    Rip Van Winkle was a man who slept 20 years Upon autopsy, it was found that there was structual damage to his?

    asked by Monique
  37. Science

    When a boxer has been knocked out what part of his brain has been affected?

    asked by Monique
  38. chemistry

    If you have 12 moles of a substance, how many molecules do you have of that substance? Suppose the substance has a molecular weight of 342. How many grams of that substance would you have to dissolve in a liter of water to make a 12 M solution?

    asked by VANESSA
  39. economics

    How do minimum wages affect equilibrium price?

    asked by DD
  40. economics

    For example the productive needs of the firm would be to set (Marginal Revenue = Marginal Costs (MR = MC) and create excess profits for the firm. However, as far as what is in the best interests of society it might be Price or (Average Revenue) = MC. Give

    asked by DD
  41. Mathematics optimization

    The arithmetic mean of two numbers a and b is the number(a+b)/2. Find the value of c in the conclusion of the mean-value theorem for f(x)=x^2 on any interval [a,b].

    asked by Jane
  42. algebra

    how would you solve: Find the sum of the first 12 terms to the earest hundreth 6 + 2 + 2/3 +...

    asked by Nacy
  43. algebra

    Factor: A.) 2x^2-9x-18 B.) 14x^2-55x-36 C.) x^3+3x^2-x-3

    asked by Josh
  44. chemistry

    a 100.00 mL sample of water has an initial temperature of 20.0 degrees C. The water is heated, and after 5 minutes its temperature is 50 degrees C. approximately how much energy was absorbed by the water? (the specific heat of wter is 4.18 J/g. degrees C

    asked by kelly
  45. Math

    math sequence probelm

    asked by Rance
  46. algebra

    simplify and show all work 11+12^2-(-11)*12 is this right11+144-(-11)*12 155-(-11)*12 144*12 1,928 simplify -(8m)-(-7m+2) 15m-2 according to order of operation what should be done first when evaluating this expression do not solve [10-(-2+1)]-9

    asked by babygirl
  47. Microeconomics

    Suppose you are a painter, and the price of a gallon of paint increases from $3.00 a gallon to $3.50 a gallon Your usage of paint drops from 35 gallon a month to 20 gallons a month. Perform the following Compute the price elasticity of demand for paint and

    asked by Michelle
  48. Math/Nutrition

    I need to figure out percentages of total calories that come from carbohydrates. I do not know the formula for this. There are 29 grams of carbohydrates and 116 calories from carbohydrates.

    asked by Anonymous
  49. math/algebra

    solve x^2 + x - 12 = 0 quadratic formula??

    asked by Jeremy
  50. chemistry

    The density of brass is 8,600 kg/m3 or 8.6 g/mL. You have 2 kg of brass. What is the volume?

    asked by Ashley
  51. algebra

    simplify -4^6

    asked by babygirl
  52. algebra/math

    Find the amount of compound interest earned in an account that opens with $24,000, earns 3.5% interest compounded daily, and is held for 10 years. Assume 360 days in a year. (Round your answer to the nearest cent.) $

    asked by apryl
  53. physics

    A car starts from rest and accelerates for 2.8 s with an acceleration of 2.1 m/s2. How far does it travel? Answer in units of m

    asked by Lindsey
  54. Chemistry

    A car travels at 60 miles per hour and gets 15 kilometers per liter of gasoline. How many gallons of gasoline are needed for a 2.2-hour trip? I'm confused on how to set-up conversion factors.

    asked by Sam
  55. statistics

    the addition of 11 numbers is 66.from them the avarage of 5 numbers is 3.and the avarage of last 5 numbers is 9. what is the 6th numbers?

    asked by Anonymous
  56. geometry

    Triangle ABC is congruent to triangle DEF. If the length of AB is 12 feet and the length of AC is 10 feet. Find the length of DE. can someone please help me on this question please and thank youu :)

    asked by Alexis
  57. math solution

    david has fixed 1200000.the yearly fixed deposite rate is 7.5%.how much money will he get with the interest after 5 years?

    asked by Anonymous
  58. science

    I need a hypothesis that I did not use already to determine which bees will fly further-the older ones or the younger ones.any ideas?

    asked by anon
  59. Calculus

    Can someone please tell me how to find the following integral? cos^4(2q)*sin(2q) dq

    asked by Cad
  60. Public Health

    I am writing an essay on OSHA in construction industry and I am to include staffing mix & predictive factors on the Law. Am I right to say staffing mix is how many number of workers are staffed. Predictive factors - falls are common protective gear

    asked by Heather
  61. algebra

    want to know if this right simplify and show all work -3x^2+4xy+7y^2+2(-3x^2+5xy+11y^2) -3x^2+4xy+7y^2-6y^2+10xy+22y^2 -3x^2+14xy+45y^2 and -6a-4a-2(100^2+3a) -6a-4a^2+200+3a 3a-4a^2+200

    asked by babygirl
  62. ALgebra

    distance and time. A car is traveling 60 miles per hour, . Give the time take the car to travel 360 M miles.by using a rational expression

    asked by Josie Wilson
  63. Calculus

    I have an integration problem. INT(t+8)^2/t^4 dt

    asked by Ferdinand
  64. Precalculus

    Write the rectangular equation (x+7)^+y^=49 in polar form.

    asked by Kim
  65. physics

    A person is to run a circular track with a radius of 93 meters. The person starts at a certain spot and runs 3 and 1/2 times around the track in a time of 227 seconds. Find the magnitude of average velocity for this trip (|vav|) and find the average speed

    asked by Marc
  66. statistics

    david electronics had a profit of $10 million in 2002. Profit doubled from 2002 to 2003 and profit increased eight fold from 2003 to 2004. what was the annual geometric mean rate of growth from 2002 to 2004?

    asked by tracy
  67. algebra

    About one fifth of the adult population in the United States smoked in 2005. Within the part of the population that smoked, sixth of twenty five of them were aged 25 to 44. What fraction of the adult population in the United States was aged 25 to 44 and

    asked by Anonymous
  68. Biology

    These are true and false questions and I want to be sure of my answers. Please someone check. Thanks: The eight-element periodicity found in the Periodic Table is related to the number of electrons in the outermost energy level of the atoms that make up

    asked by Cad
  69. science

    Does all object fall at the same speed given the mass

    asked by gwen
  70. Math OPTIMIZATION

    A home gardener plans to enclose two rectangular gardens with fencing. The dimensions of the garden: x by 12-x, y by 12-x-y a. Find the values of x and y that maximize the total area enclosed. b. What is the maximum total area enclosed? c. How many meters

    asked by Willoby
  71. math

    The displacement (in centimeters) of a particle moving back and forth along a straight line is given by the equation of motion s = 4 sin ¦Ðt + 3 cos ¦Ðt, where t is measured in seconds. (a)Find the average velocity during each time period. (i) [1, 2]

    asked by yanxin
  72. bus. /stats

    Use the data given in the table to construct a frequency distribution and ogive? Before constructing a dam on a Hill river, the Army corps of engineers performed a series of tests to measure the water flow past the proposed location of the dam. The results

    asked by tim
  73. PHYSIC

    What current is required in the winding of a long solenoid that has 1000 turns uniformly distributed over a length of 0.4 m, to produce at the center of the solenoid a magnetic field of magnitude 1.0 x 10 -4 T?

    asked by KAIT
  74. PHYSIC

    What current is required in the winding of a long solenoid that has 1000 turns uniformly distributed over a length of 0.4 m, to produce at the center of the solenoid a magnetic field of magnitude 1.0 x 10 -4 T?

    asked by KAIT
  75. physics

    A wire carrying a 28.0 A current bends through a right angle. Consider 2.00 mm segments of wire, each 3.00 cm from the bend (see fig). Find magnitude and direction of the magnetic field these two segments produce at point P, which is midway between them.

    asked by KAIT
  76. PHYSICS

    A square wire loop 10.0 cm on each side carries a clockwise current of 15.0 A. Find the magnitude and direction of the magnetic field B at its center due to the four 1.20 mm wire segments at the midpoint of each side?

    asked by KAIT
  77. physics

    When one end of a bar magnet is placed near a tv screen, the picture becomes distorted. Why?

    asked by KAIT
  78. maths

    tan50+tan60+sec45+cos45

    asked by freind
  79. math

    i am taking a job related test with many math sections. I am long out of school and need some tutorials as well as practice questions and answers. The topics are as follows: -multiplication and division of fractions and mixed numbers -calculating

    asked by jay
  80. History

    Is History an art or a science?

    asked by cynthia
  81. English

    1. Buy one, get one free. 2. If you buy one, you will get one free. 3. If you buy one, you get one free. (Does #1 mean #2 or #3?)

    asked by rfvv
  82. English

    Could you check these sentences on Oscar Wilde's "The Picture..", please? Thank you. 1) In the first chapter Lord Henry was relaxing on a divan smoking. Basil Hallward sat looking at his work smiling. 2) Lord Henry said that the portrait should be

    asked by Henry2
  83. English

    I left out the following sentences. Thank you very much. 1) Dorian, however, is at best charming but at times enjoys hurting the artist. The adoration that Basil feels for Dorian is a disturbing mixture of terror and sorrow. 2) He was aware of gaining

    asked by Henry2
  84. science

    a rail road train accelerates at a rate of 2 meters per second squared. How fast is the train moving after 6 seconds?

    asked by Cathy
  85. MATHS

    Four points lie in a plane. They are partitioned into two pairs so that the sum of the lengths of the segments joining the points of each pair has the minimal possible value. Prove that these segments have no common points.

    asked by TIm
  86. math

    If the perimeter of a parallelogram is 140 m, the distance between a pair of opposite sides is 7 meters and its area is 210 sq m, find the length of two adjacent sides of the parallelogram.

    asked by Krish
  87. Algebra 2

    Could you explain the difference between the solution(s)to an equation and the solutions to an inequality.

    asked by JOY
  88. maths

    what is the value of 1000 power of 1000

    asked by s.sivasankararao
  89. physics

    A car starts from rest and accelerates uniformly along a straight horizontal road at 3 metres second squeared for 4 seconds,after which it continues with a constant velocity for a further 6 seconds.CALCULATE THE MAGNITUDE OF THE MAXIMUM VELOCITY OF THE

    asked by Anonymous
  90. Physical Science

    Im not sure about the answer i need u to help me get the answer

    asked by Anonymous
  91. Physics

    Two point charges, +3.09 µC and -5.65 µC, are separated by 1.19 m. What is the electric potential midway between them

    asked by ela
  92. physics

    an unknown force pushes an automobile of mass 1700kg. The automobile is ground level and accelerates at a rate of 3 meters per second squared.what is the magnitude of the force?

    asked by tg
  93. Algebra 2

    Need help PLEASE!! Question is: There is no Closure Property of Division that applies to Integers. For example 2 divided by 3 is not an interger. What is another example of real numbers that does not have a Closure Property for one of the basic operations?

    asked by JOY
  94. Physical Science

    A car starts from rest and accelerates uniformly along a straight horizontal road at 3 metres second squeared for 4 seconds,after which it continues with a constant velocity for a further 6 seconds.What is the magnitude of the maximum velocity of the

    asked by Anonymous
  95. com155

    Dinner is good. Dinner was better yesterday. This is the best dinner yet. I am having a bad day. My day cannot get any worse. This is the worst day ever. The target is far away. The target should be moved further back. Whoever hits the furthest target,

    asked by heather
  96. Math

    Jon, Fred, Ted used the number they rolled on a cube to create a number. Jon created the number 214,312. Fred created the number 232,442. Ted's number was greater than Jon but less than Fred. What is Ted's number?

    asked by Quay
  97. COMP 100

    You have been hired as a consultant by your neighbor to help her with her computer. You notice that she has a screen full of icons which appear to be Word documents, Excel Spreadsheets and other graphic files. How would you help her organize her data i.e.

    asked by MAURICE
  98. physical science

    A car starts from rest and accelerates uniformly along a straight horizontal road at 3 metres second squeared for 4 seconds.CALCULATE THE MAGNITUDE OF THE MAXIMUM VELOCITY OF THE CAR,I.E THE VELOCITY OF THE CAR AFTER ACCELERATING FOR 4 SECONDS.PLEASE SHOW

    asked by Anonymous
  99. ENGL

    List a few different genres in which you write (such as academic papers, text for social networks, business documents, diary entries, or poetry), select one, describe the specific kind of document you typically produce, and then discuss your process for

    asked by MAURICE
  100. math

    I need help multiply these 3 factors. (x+3)(x-3)(x-2)

    asked by Julie
  101. physics

    A plane is flying horizontally with speed 244 m/s at a height 5670 m above the ground, when a package is thrown downward from the plane with a vertical speed v(initial) = 73 m/s. What horizontal distance is traveled by this package? The acceleration of

    asked by squires
  102. geography

    What country has the largest land area in the Western Hemisphere? My answer is Canada. Is this correct?

    asked by Reed
  103. health

    You have been hired as an administrator in an ambulatory care setting. What factors would you expect to encounter and how would you deal with them?

    asked by Val
  104. geography

    Through which four South American countries does 20 degrees S line of latitude pass? My answer is Chile, Bolivia, Paraguay, and Brazil. Is this correct?

    asked by Reed
  105. geography

    I have one more that I want to make sure is correct! On what continent is the Chang Jiang found? My answer is Asia. Is this correct?

    asked by Reed
  106. physic

    A football is kicked stright up into the air it hits the ground in 4.6 sec later, what was the greatest height reached?

    asked by Mack
  107. physics

    The figure below shows a general situation in which a stream of people attempt to escape through an exit door that turns out to be locked. The people move toward the door at speed v = 4.1 m/s, are each d = 0.30 m in depth, and are separated by L = 1.75 m.

    asked by Savannah
  108. quiz

    Whenever Levi cries, his parents seem to satisfy him by changing his diaper, feeding him, or holding him. Simply put, Levi’s parents seem to fulfill his dependency needs. What stage of development would Erikson say that Levi is experiencing?

    asked by Anonymous
  109. Biology

    These are true and false questions and I want to be sure of my answers. Please someone check. Thanks: The eight-element periodicity found in the Periodic Table is related to the number of electrons in the outermost energy level of the atoms that make up

    asked by Cad