Questions Asked on
February 11, 2012

  1. Chemistry

    The amount of energy released by burning a fuel source, measured in energy per mass, is called the fuel value. If all the energy obtained from burning 1.28 pounds of methane (fuel value is 11.97 kcal/g) is used to heat 127.0 kg of water at an initial

    asked by Heather
  2. chemistry

    Magnesium reacts with iron(II) chloride according to the equation Mg(s) + FeCl2(aq) → MgCl2(aq) + Fe(s) a. Is magnesium oxidized or is it reduced? Magnesium is reduced. b. Is iron(II) ion oxidized or is it reduced? Iron(II) ion is oxidized . c. What is

    asked by krystal
  3. science

    If the magnitude of the electric field in air exceeds roughly 3 X10^6 N/C, the air breaks down and a spark forms. For a two-disk capacitor of radius 52 cm with a gap of 1 mm, what is the maximum charge (plus and minus) that can be placed on the disks

    asked by Brittney
  4. chemistry

    5. How many grams of KNO3 will be required to prepare 800 mL of 1.40 M KNO3?

    asked by ima,
  5. Math

    Gymnast Clothing manufactures expensive hockey jerseys for sale to college bookstores in runs of up to 250. Its cost (in dollars) for a run of x hockey jerseys is C(x) = 2500 + 10x + 0.2x2 Domain(0 ≤ x ≤ 250) Gymnast Clothing sells the jerseys at $105

    asked by Jamie
  6. science

    Name the type of reaction that the equation represents? 2Cu + O2 -------> 2CuO

    asked by Natalie
  7. BIO

    1.Does the appearance of the cave fish and minnow suggest common ancestry? Why 2. Explain the evolutionary relationship between the fin of a fish and the flipper of a whale?

    asked by NSCC
  8. Mathematics

    OPQRS is a right pyramid whose base is a square of sides 12cm each. Given that the slant height of the pyramid is 15cm. Find the height of the pyramid, the volume of the pyramid, and the total surface area of the pyramid by first drawing the net of the

    asked by Joe
  9. physics

    The highest barrier that a projectile can clear is 12.7 m, when the projectile is launched at an angle of 17.5° above the horizontal. What is the projectile's launch speed?

    asked by loweri
  10. Math/Trig

    Which logarithmic equation is equivalent to L^m = E 1) LogL E = m 2) logE L = m 3) logm E= L 4) logE m= L

    asked by Charles
  11. finance

    computing checking account balance. based on the following information,determine the true balance in your checking account. balance in your checkbook-$356 balance on bank statement,$472 service charge and other fees, $15 interest earned on account $4 total

    asked by sharon
  12. chemistry

    a. Cl2 + 2NaI → 2NaCl + I2 This is a single replacement reaction. b. 2K + 2HCl → 2KCl + H2 This is a single replacement reaction. c. N2 + 3H2 → 2NH3 This is a synthesis reaction. d. 2KClO3 → 2KCl + 3O2 This is a decompisition reaction

    asked by krystal
  13. Trigonometry

    This is a logs question If u=x/y^2, which expression is equivalent to log u? 1) log x + 2 log y 2) 2(log x- log y) 3) 2(log x + log y) 4) log x- 2 log y

    asked by Charles
  14. conceptual psychics

    suppose that you are an accident investigator and you are asked to figure whether or not the car was speeding before it crashed through the rail of the bridge and into the mudbank as shown. the speed limit of the bridge is 55mph=24m/s. what is your

    asked by dima qud
  15. buisness

    I need help please: Because Saudi Arabia and Australia have ____ in production of crude oil and petroleum products and wool respectively, Saudi Arabia can specialize in the production of crude oil and petroleum products, and Australia can specialize in the

    asked by sharon
  16. chemistry

    convert HCHO to CH3CHO

    asked by swagata
  17. BIO

    1. Why are the muscles that make hair stand up vestigial? 2. what are the probable functions of the muscles that makes hair stand up?

    asked by NSCC
  18. trig

    The hypotenuse of the right triangle PQR is 16ft. length. The sine of the angle

    asked by Aailayah
  19. algebra

    The strength of a wood beam varies inversely with its length. A beam is 33 feet long can support 1200 pounds. How much weight can a similar beam support if it is 23 feet long?

    asked by alex
  20. Math

    Please show me how to set it up and to solve: A cell phone company sells about 500 phones each week when it charges $75 per phone. It sells about 20 more phones per week for each $1 decrease in price. The company's revenue is the product of the number of

    asked by Jane
  21. BIO

    1. Why are the muscles that make hair stand up vestigial? 2. what are the probable functions of the muscles that makes hair stand up?

    asked by NSCC
  22. English

    Why is it important that canada produce value added products?

    asked by Sana
  23. Math

    Log8 4 + log16 2 x log 27 81= x solve for x

    asked by John
  24. Chemistry

    The amount of energy released by burning a fuel source, measured in energy per mass, is called the fuel value. If all the energy obtained from burning 1.28 pounds of methane (fuel value is 11.97 kcal/g) is used to heat 127.0 kg of water at an initial

    asked by Heather
  25. Statistics

    A telephone company's goal is to have no more than 4 monthly line failures on any 100 miles of line. The company currently experiences an average of 5 monthly line failures per 50 miles of line. Let x denote the number of monthly line failures per 100

    asked by Krista
  26. Math

    Worldwide quarterly sales of a brand of cell phones was approximately q = −p + 176 million phones when the wholesale price was $p. (a) If the cellphone company was prepared to supply q = 9p − 344 million phones per quarter at a wholesale price of $p,

    asked by Amie
  27. chemistry

    a. What is the molecular weight of aspirin (C9H8O4)? 180.1574 amu b. What is the mass of 0.00785 mol of aspirin? 1.41 g c. How many moles of aspirin are present in 100 mg of aspirin? Enter your answer in scientific notation. 5E-4 mol aspirin d. How many

    asked by krystal
  28. math

    The transmitter site of radio station WGGW and the transmitter site of another radio station, WGWB, are on the same highway 100 miles apart. The radio signal from the transmitter site of WGWB can be received only within a radius of 60 miles in all

    asked by reena
  29. General Physics II

    ___A __/__\ B/____\C radius (each side of this equilateral triangle) 0.5 m Three point charges are located at the corners of an equilateral triangle as in the figure below. Find the magnitude and direction (counterclockwise from the +x-axis of the net

    asked by Jen
  30. algebra

    Find all integers b so that the trinomial 3x^2 +bx + 2 can be factored.

    asked by Diana
  31. math

    an electronics store receives a shipment of 40 graphing calculators including 3 that are defective. Four of the calculators are sleceted to be sent to a local high school. How many selections can be made using the original shipment

    asked by cathy
  32. physics

    A woman with a mass of 56 kg runs at a speed of 8 m/s and jumps onto a giant 30 kg skateboard initially at rest. What is the combined speed of the woman and the skateboard?

    asked by brett
  33. math

    Suppose that an automobile parts wholesaler claims that .5 percent of the car batteries in a shipment are defective. A random sample of 200 batteries is taken, and four are found to be defective. (a) Use the Poisson approximation to find the probability

    asked by k
  34. physics

    an ice skater spins about a vertical axis at an angular speed of 15 rad/s when her arms are outstreched . she then quickly pulls her arms into her sides in a very small time interval so that the frictional force due to ice are negligible.her initial moment

    asked by ashely
  35. Statistics

    Suppose that an automobile parts wholesaler claims that .5 percent of the car batteries in a shipment are defective. A random sample of 200 batteries is taken, and four are found to be defective. (a) Use the Poisson approximation to find the probability

    asked by Krista
  36. Chem

    Calculate the volume of .300 M NaOH needed to prepare a pH=3.50 buffer with 250ml of .075M HF solution. pKa (HF) = 3.15

    asked by Will
  37. chemistry

    HCHO TO CH3CHO HCHO->HCHOH->

    asked by swagata
  38. PHI 103

    A valid argument is one that, if its premises are accepted as true, has (Points : 1)

    asked by Anonymous
  39. economics

    Suppose that the resident of vegopia spend all of their income on cauliflower,broccoli and carrots.in 2006 they buy 100 heads of cauliflower for $200,50 bunches of broccoli for $75 and 500 carrots for $50.in 2007 they buy 75 heads of cauliflower for

    asked by Anonymous
  40. Chemistry

    when 7.50 grams of iodine (I2) is added to 48.7grams of carbon tetrachloride (CCl4), the iodine dissolves and a solution is formed. The weight percent of the iodine in the solution is? 7.50g I2/ 7.50 + 48.7 X 100 = 13.3 Did I do this correctly?

    asked by Hannah
  41. math

    A telephone company's goal is to have no more than 4 monthly line failures on any 100 miles of line. The company currently experiences an average of 5 monthly line failures per 50 miles of line. Let x denote the number of monthly line failures per 100

    asked by k
  42. Math

    solve the equation 4^2x-2b= (1/8)^x+b for x in terms of b. 1) x=b/7 2) x=7b 3) x=-7b 4)x= -b/7

    asked by Willis
  43. algebra

    For every positive 2-digit number, x, with tens digit t and units digit u , let y be the 2 digit number formed by reversing the digits of x. Which of the following expressions is equivalent to x-y? a. 9(t-u) b. 9(u-t) c. 9t-u d.0

    asked by reena
  44. italian

    is cappuccino masculine or feminine is giorno masculine or feminine

    asked by krystal
  45. Calculus

    Two forces of equal magnitude act to 60 degrees. If their resultant has a magnitude of 30N, find the magnitude of the equal forces.

    asked by Ed
  46. Calculus (Antiderivatives)

    What is the antiderivative of the followring expression? x^(-1/2) sin(2x^(-3/2)) After trying to figure out this problem, I have the suspicion that the antiderivative cannot be found using substition method, would this assumption be correct?

    asked by Mishaka
  47. physics

    A hockey puck on a frozen pond is given an initial speed of 20.0 m/s. If the puck always remains on the ice and slides 115 m before coming to rest, determine the coefficient of kinetic friction between the puck and ice. (Answer: = 0.177 k μ )

    asked by michael
  48. college physics

    When two objects of unequal mass are hung vertically over a frictionless pulley of negligible mass, as shown below, the arrangement is called an Atwood machine. Determine a) the magnitude of the acceleration of the two objects and b) the tension in the

    asked by lacrosse
  49. maths

    xdy-ydx=sqrt(x^2-y^2)dx

    asked by ashely
  50. maths

    d^2y/dx^2+4dy/dx+4y=4cosx+3sinx

    asked by ashely
  51. physics

    A coach is hitting pop flies to the outfielders. If the baseball (mass = 145 g) stays in contact with the bat for 0.08 s and leaves the bat with a speed of 75 m/s, what is the average force acting on the ball?

    asked by brett
  52. cells

    suppose a cell is placed in a large container of water with a very low solute concentration.what do you think will happen?

    asked by kate
  53. Algebra

    The officejet printer can copy sues dissertation in 16 minutes. The laser printer can copy the same document in 22 minutes. If the two machines work together, how long would they take to copy the dissertation?

    asked by Lisa
  54. physics

    When two objects of unequal mass are hung vertically over a frictionless pulley of negligible mass, as shown below, the arrangement is called an Atwood machine. Determine a) the magnitude of the acceleration of the two objects and b) the tension in the

    asked by michael
  55. maths

    a box contains 20 fuses ,out of which ,5 are defective.if a sample of 3 fuses is chosen from the box at random without replacement,find the probability that x fuses in this sample will be defective

    asked by ashely
  56. physics

    a) What is the frequency of a photon of UV radiation ( = 2.00 x 10^-7 m)? (b) Calculate the energy of a photon of UV radiation. (C) What is the frequency of a photon of infrared radiation ( = 1.083 x 10^-6 m)? (d) Calculate the energy of a photon of

    asked by hannah
  57. Physics

    A circular automobile racetrack is banked at an angle theta such that no friction between road and tires is required when a car travels at 28.0 m/s. If the radius of the track is 390 m, determine theta .

    asked by J
  58. Calculus

    1. a) For the Function and point below , Find f’(a). b) Determine the equation of the line tangent to the graph of f at (a,f(a)) for the given value of f(x) = 4x2+2x, a =1 F’(a) = y = 2. For the function find f’ using the definition f’(x) =

    asked by Tired
  59. math

    Please show me how to set it up and solve: You are making a rectangular table. The area of the table should be 10ft squared. You want the length of the table to be 1ft shorter than twice its width. What should the dimensions of the able be?

    asked by Jane
  60. PHYSICSSS

    Two boxes with different masses M1 = 1.8 kg and M2 = 2.6 kg are tied together on a frictionless ramp surface which makes an angle θ = 21° with the horizontal (see the figure below). What is the tension in the rope connecting the two boxes? N What is the

    asked by Anonymous
  61. physics

    A block of mass 200g and density 0.8g/cm3 is submerged in a liquid of density 0.2g/cm3. find minimum force required to keep the block floating.

    asked by Narayanan
  62. buisness

    could someone help me with this question? Which of the following scenarios would not be considered international business? Choose one answer. a. A Chinese manufacturer sells toys to a large toy retailer in the United States. b. Intel sells its processors

    asked by sharon
  63. Trigonometry

    Given log 3= x and log 5 =y Express radical 3/5 in terms of x and y. 1) 1/2x-y 2) 1/2(x-y) 3) 1/2xy 4) 2(x-y)

    asked by Kid
  64. enron

    Which segment of its operations got Enron into difficulties?

    asked by Anonymous
  65. Physics

    A projectile of mass 1.350 kg is shot straight up with an initial speed of 22.0 m/s. (a) How high would it go if there were no air friction? (b) If the projectile rises to a maximum height of only 17.8 m, determine the magnitude of the average force due to

    asked by Sejul
  66. College Physics

    An artificial satellite is moving in a circular orbit with a speed of 6.5 km/s and a period of 80.0 min. A retarding rocket fires in a direction opposite to the motion. This provides a retarding deceleration of 21.0 m/s2. What is the acute angle between

    asked by Phillip
  67. Math

    How can you use a multiplication fact to find a division fact?

    asked by Nelson
  68. maths

    write down the equation d^2u/dt^2=c^2 grad^2u in a plane polar coordinates .by the method of separation of variables , reduce the PDE to obtained to a set of ODE's

    asked by ashely
  69. Math

    Suppose that an automobile parts wholesaler claims that .5 percent of the car batteries in a shipment are defective. A random sample of 200 batteries is taken, and four are found to be defective. (a) Use the Poisson approximation to find the probability

    asked by Krista
  70. Physics

    A child insists on going sledding on a barely snow-covered hill. The child starts from rest at the top of the 60 m long hill which is inclined at an angle of 30o to the horizontal, and arrives at the bottom 8.0 s later. What is the coefficient of kinetic

    asked by Mary
  71. Math

    15/8z+1/4=4 Please help me solve and show how you did it. Thanks

    asked by Sue
  72. Physics

    A 0.13 kg bullet traveling at 614 m/!@#$%^&s a 5.7 kg block of wood and stays in the wood. What is the velocity (speed)of the wood block immediately after the bullet hits it

    asked by John
  73. Algebra/Trig Check Answers please

    Please check these answers thanks. 1. The shadow of a vertical pole is 24.8 feet long when the angle of elevation of the sun is 42degrees 0.0'. Find the height of the pole. Answer: 22.3=height 2. From a point on a lighthouse 108 feet above water, the angle

    asked by Missy
  74. financial accounting

    I am preparing an adjusted trial balance and I have almost gotten my debits to equal my credits. I need to figure out how much to debit the equipment and how much to credit the accumulated depreciaton. To give you an idea of the gap between the two, my

    asked by Pumpernickel
  75. Chemistry(Please check)

    1) The molecular mass of a substance was determined by the freezing point depression technique. The minimum data required for the determination are: a) delta T and Kf only b) delta T, Kf, and mass of solute c) delta T, Kf, mass of solute, and mass of

    asked by Hannah
  76. physical science

    A worker pushes horizontally on a large crate with a force of 312 N, and the crate is moved 6.5 m. How much work was done?

    asked by Anonymous
  77. physics

    a spring is stretched 5*10^2m by a force of 5*10^-4N.a mass of 0.001kg is placed on the lower end of the spring.after equilibrium has been reached, the upper end of the spring is moved up and down so that the external force acting on the mass is given by

    asked by ashely
  78. literacy ece

    the first language arts skill that children learn is A) speaking B)reading C) writing D) listening

    asked by de
  79. physics

    As a moon follows its orbit around a planet, the maximum gravitational force exerted on the moon by the planet exceeds the minimum gravitational force by 9.8%. Find the ratio rmax/rmin, where rmax is the moon's maximum distance from the center of the

    asked by Natasha
  80. Math 208

    Grade Average A student scores 65 and 82 on two different 100-point tests. If the maximum score on the next test is also 100 points, what score does the student need to maintain at least an average of 70?

    asked by Wanda
  81. chemistry

    What would happen if MnO2 was mixed with KBrO3 ND 9 M sulfuric acid?

    asked by Lucas
  82. Physics

    In black-and-white photography, a photon energy of about 4.00 x 10-19 J is needed to bring about the changes in the silver compounds used in the film. (a) What is the frequency of the light needed to bring about these changes? (b) Explain why a red light

    asked by hannah
  83. Physics

    A 520 Hz tuning fork produces a standing wave in a column of air in a closed tube. If the speed of sound is 340 m/s, what is the length of the air column?

    asked by hannah
  84. physics

    an airplane has a speed of 600km/h with respect to air. it has to fly a distance of 800km northward. in what direction should it fly if a steady wind is blowing at a speed of 120km/h from the west ? what will its speed with respect to the ground be? draw

    asked by ash
  85. geometry

    , AA′ = 33 m and BC =7.5 m. The span is divided into six equal parts at E, G, C, I, and K. Find the length of A′B

    asked by Anonymous
  86. Algebra

    The officejet printer can copy sues dissertation in 16 minutes. The laser printer can copy the same document in 22 minutes. If the two machines work together, how long would they take to copy the dissertation?

    asked by Lisa
  87. British Literature

    "This supernatural soliciting. Cannot be ill, cannot be good. If ill, Why hath it given me earnest of success Commencing in a truth? I am Thane of Cawdor. If good, why do I yield to that suggestion Whose horrid image doth unfix my hair And make my seated

    asked by Scooby10
  88. physics

    Two blocks of masses m1 = 4.00 kg and m2 = 3.00 kg are placed in contact with each other on a frictionless horizontal surface. A constant force F = 9.00 N is applied to the block of mass m1. a) Determine the magnitude of the acceleration of the two-block

    asked by michael
  89. British Literature

    What is the symbolic significance of the dagger in the following excerpt from MacBeth--" Is that a dagger which I see before me, the handle toward my hand? Come, let me cluth thee. I have thee not, and yet I see these still. Are thou not, fatal vision,

    asked by Scooby10
  90. physics

    You measure your weight by stepping on a spring scale inside an elevator. If elevator accelerates either upward or downward, the spring scale gives a reading different from your weight. a) Calculate how much a 70 kg person weigh a) if the elevator

    asked by michael
  91. Trigonometry

    The expression log(x^n/ radical y)is equivalent to 1. n log x - 1/2 log y 2. n log x- 2 log y 3. log (nx) - log (1/2y) 4. log (nx) - log (2y)

    asked by Stephen
  92. percentage

    A jug contained 780ml of milk.Mrs Li poured 221ml of the milk into a glass and 130ml into a cup.what percentage of milk was left in the jug?pls give ur answer clearly

    asked by Da S
  93. PHYSICSSS

    A train engine pulls out of a station along a straight horizontal track with five identical freight cars behind it, each of which weighs 88.0 kN. The train reaches a speed of 13.0 m/s within 6.50 min of starting out. Assuming the engine pulls with a

    asked by Anonymous
  94. physics

    A .145kg baseball is thrown at 40 m/s (~89.5mph). What is the momentum of the baseball?

    asked by brett
  95. Statistics

    You have a fair die. The die has a 2 on two sides, a 4 on two sides and a 6 on two sides. Note: the only possible outcomes for each roll are 2, 4 or 6. (a) Draw a tree diagram that shows the possible outcomes of rolling the die twice (my answer Roll 1: 2,

    asked by Laura
  96. math

    Seven thousand raffle tickets are to be sold at $10 each to benefit a local community group. The prizes, the number of each prize to be given away, and the dollar value of winnings for each prize are as follows: Prize Number to Be Given Away Dollar Value

    asked by k
  97. Spanish

    Answer in complete sentences. Te gusta más comer el desayuno o el almuerzo? ¿Por qué? My answer: Me gusta más comer en el desayuno porque es nutritivo y bueno.

    asked by Anonymous
  98. Math

    Please show me how to set it up and solve: You are making a rectangular table. The area of the table should be 10ft squared. You want the length of the table to be 1ft shorter than twice its width. What should the dimensions of the able be?

    asked by Jane
  99. physics

    a bus is moving downhill at a slope of 5 degree . at the moment when the speed of the bus is 30km/h,the driver spots a deer 30m ahead. he applies the brakes and comes to a stop. the is paralysed by fear and does not move.will the bus stops before reaching

    asked by ash
  100. physics

    a circuit consist of an inductance of 0.05H, a resistance of 20ohms , a capacitor of 100uF and an angle of 100cos200t. find (i) and (q) given that q=0,and i=0 at t=0.

    asked by ashely
  101. writeacher

    i writing essay on what true love be and this be one sentence in my essay you please able to change it to positive? i have negative word which be unable in essay. In the short story, "The Painted Door", by Sinclair Ross, the main characters John and Ann

    asked by Mohammad
  102. British Literature

    What argument does Aphra Behn make about her two loves in the passage: "How strongly does my passion flow, Divided equally 'twixt two? Damon had ne'er subdued my heart, Had not Alexis took his part; Nor could Alexis powerful provce, Without my Damon's aid,

    asked by Scooby10
  103. communication

    extemporaneous presentation, what is the first step of the conclusion? A. Say, "In conclusion..." and continue with a summary of the body. B. Review the main points with a simple, single sentence that names each main point with its one-word or two-word

    asked by Anonymous
  104. Calculus

    1. a) For the Function and point below , Find f’(a). b) Determine the equation of the line tangent to the graph of f at (a,f(a)) for the given value of f(x) = 4x2+2x, a =1 F’(a) = y = 2. For the function find f’ using the definition f’(x) =

    asked by Tired
  105. college physics

    Two blocks of masses m1 = 4.00 kg and m2 = 3.00 kg are placed in contact with each other on a frictionless horizontal surface. A constant force F = 9.00 N is applied to the block of mass m1. a) Determine the magnitude of the acceleration of the two-block

    asked by lacrosse
  106. Math/trig

    Log radical b/ a^2 is equivalent to 1) 1/2 log b + 1/2 log a 2) l/2 log b- 2 log a 3) 2 log b - 1/2 log a 4) 1/2logb/2 log a

    asked by matthew
  107. Science

    A 70kg person dives horizontally from a 200kg boat with a speed of 2 m/s. What is the recoil speed of the boat?

    asked by Jane
  108. Calculus

    I don't know what to write for question b and c. 1 a)Determine the values of x for which the function f(x) = 3/(√x^2+3x-4) is continuous. Values of x are -4 and 1. -------------------------------------- b) What does your answer in part a. represent? c)

    asked by Matthew
  109. maths

    r1 and r2 are unit vectors in the x-y plane making angles a and b with the positive x-axis.by considering r1.r2 derive cos(a-b)=cos(a)cos(b)+sin(a)sin(b)

    asked by ashely
  110. calculus(integral)

    intergral 2x^2/(x^2+4x+8)

    asked by Noel
  111. network neutrality

    1. Explain what Net Neutrality is 2. Explain who wants and who doesn’t want Net Neutrality 3. Explain the Obama administrations stance on the issue 4. Why didn’t the FCC’s ruling cover wireless providers can you please help me find a link/websites

    asked by blaze
  112. human resource

    1.  Regulations governing the employer-employee relationship are based on agency law and failure of an employee/agent to act according to the employer's instructions could result in liability for the employer.  2.  Misclassification of employees as

    asked by nicole
  113. English

    I need to turn these sentences (or notes) into a cohesive paragraph, using sentence connectors instead of points and improving the word choice. Could you please help me? Robinson’s education of Friday recalls the processes of modern colonialism, which

    asked by Henry2
  114. math

    1.) The first person who requires your assistance is Tina the bearded lady. Tina’s side job is to look after the elephants (she double majored at circus university.) a. Tina must fill the semi-circular trough shown above with peanuts. Tina knows that the

    asked by harry
  115. physics

    a plane is flying with a constant speed along a straight line at an angle 60degree with the horizontal. the weight(W) of the plane is 90,000N and its engine provides a thrust(T)of 120,000N in the direction of flight . two additional forces are exerted on

    asked by ash
  116. Finance

    Caluating opportunity cost. what is the annual opportunity cost of a checking account that requires a $500 minimum balance to avoid service charges? Assume an interest rate of 3 percent

    asked by sharon
  117. Math

    If you have a parallelagram ABCD, and line segment AB is on the left, can you read it as BA as well or is that backwards? Of if the alphabetical order was different and it was parallelagram PGAD, would you still only be able to read it as line segment PG

    asked by Jamie
  118. algebra

    Our hardware store buys tools for $15 each, marks them up and sells them for $30. Their monthly expenses (fixed costs) are $10,000. a. What is the cost function? b. What is the revenue? c. How many units must be sold for the company to get a profit?

    asked by Anonymous
  119. Math

    swimming pool Theflow rate for one pipe is 1 1/4 that of another pipe. A swimming pool can be filled in 5 hours using both pipes. Find the time to fill the pool only using the pipe with the lower flow rate.

    asked by Anonymous
  120. physics

    an object was launched with the velocity of 20 m/s at an angle 45 degree to the vertical . at the top of its trajectory the object broke into two equal pieces.one piece fell vertically downward .where would the other piece fall?(g=10m/s^2)

    asked by ashely
  121. calculus

    Find the equation of the tangent to the curve sin(x+y)=xy at the origin.

    asked by ck
  122. English

    Thank you very much. Here is a summary I need to make on Defoe's Robinson Cruseo. I used the present as we once suggested to me. 1) At the age of 19 he decides to leave his home, ignoring his father's advice, in order to travel around the world and make

    asked by Henry2
  123. physics

    for a sateliite to have a speed of 7400 m/s how far must it be in metres above the earth's surface

    asked by Anonymous
  124. algebra

    sorry here it is... The 1st part of the trip the canoeist travels 60 miles at a certain speed. On the second part, he travels 18 mi at 5 mi slower. The total time is 3 hours. What was the speed on both parts of the trip??

    asked by debby
  125. communication

    persuasive presentation. One of the articles found contradicted the other four. decided she just wouldn't include the contradictory information. The choice would fall into: a.Good Persuasive Strategy b. Ethical Principles c. Problem-Solution Format d.

    asked by Anonymous
  126. math

    the bulletin board is 48 inches long and 24 inches wide. How many yards would they need for the trim?

    asked by sally
  127. physics

    find the solution of the wave equation for a vibrating string of length (l)=10units with ends fixed .it is given that c^2=1,initial velocity is zero and initial deflection is u(x,o)=k(sinx-sin2x)

    asked by ashely
  128. College Algebra

    49x^4 - 70x^3 + 21x^2. Facotor out, relative to the intergers, all factors common to all terms.

    asked by anomious
  129. physics

    A string connecting a car of mass x1 on an air track is connected to another mass, x2, by a string over a pulley. If the string has appreciable mass will the car still undergo constant acceleration? Explain I think that the car will still undergo constant

    asked by Emily
  130. Physics

    A test tube in a centrifuge is pivoted so that it swings out horizontally as the machine builds up speed. If the bottom of the tube is 145.0 mm from the central spin axis, and if the machine hits 46500 rev/min, what would be the centripetal force exerted

    asked by Matt
  131. US/ 101Week 5 DQ4

    Have you ever used mnemonics to remember something complicated? If so, describe these techniques. How might you use mnemonics to be a more effective college student and adult learner?

    asked by mitchell
  132. English

    I added a few details to my previous summary. I need you to check it. 1) During his journey, he is shipwrecked on a desert island off the coast of South America, near the mouth of the Orinoco River, where he remains for 28 years. 2) To get himself food he

    asked by Henry2
  133. math

    Mary worked 30 hours this week, five of these hours were on Christmas Day (holiday pay). Determine Mary’s gross pay for this week

    asked by ashley
  134. math

    solve (4x^3y^3+1/x)dx+(3x^4y^2-1/y)dy=0

    asked by ashely
  135. us history

    How did the Articles of Confederation reflect the colonial experience in America? Did the Confederation achieve any positive results?  What and how?  Discuss the shortcomings of the Articles.

    asked by Desiree
  136. percentage

    Evelyn has a ribbon 420cm long.She uses 216cm to decorate a present.what percentage of the ribbon is left?Express your answer correct to 1 decimal place

    asked by Da S
  137. Physics/ Engineering

    Calculate the moment about a point (5; 4; 3) ft. caused by the forces P = 3^i - 2^j - 4^k lb. and Q = 5^i + 7^j - 2^k lb. acting at the points (7; 2; 2) ft. and (3; 2; 5) ft., respectively. What I did was this; vector r1= (7,2,2) - (5,4,3) = 2i-2j-5k

    asked by Aaron
  138. Statistics

    You have a bucket with 3 black balls and 7 red balls. What is the probability of drawing 2 reds and 1 black in 3 draws if order is not important? (Assume replacement after each draw)

    asked by Donna
  139. Engineering

    Calculate the moment about a point (5; 4; 3) ft. caused by the forces P = 3^i - 2^j - 4^k lb. and Q = 5^i + 7^j - 2^k lb. acting at the points (7; 2; -2) ft. and (-3; -2; 5) ft., respectively. What I did was this; vector r1= (7,2,2) - (5,4,3) = 2i-2j-5k

    asked by Aaron
  140. Grade 6 Science

    Describe a way you can become a victim of a static electric shock. Explain what caused the static electric shock.

    asked by Ms.Sue PLZ help
  141. Grade 6 Science

    Describe a way you can become a victim of a static electric shock. Explain what caused the static electric shock.

    asked by Sameer I NEED HELP ASAP
  142. Algebra

    the altitude of a triangle is 3m less than half its base. If the area of the triangle is 300 m^2 find the measure of the base.

    asked by Sarah
  143. algebra

    How many solutions do the linear equations x-y=2 -2x+2y=-1 have?

    asked by Samantha
  144. English

    What is romantic in the novel "The Great Gatsby" that happens between ch. 1-6?

    asked by Rebecca
  145. Math

    4/5-2p/5=6/5 Please help me solve this and show how you did it. Thanks

    asked by Mike
  146. physics

    Phrank (36.4kg) runs at 2.2 m/s and jumps onto a large stationary skateboard (2.3kg) on which Phrancine (22.7kg) is sitting. After the collision, Phrank, Phrancine, and the skateboard move at 1.3 m/s. Find the momentum before and after the collision along

    asked by brett
  147. sales tax

    How much tax is there on 268.00 @6%

    asked by Brenda
  148. Math

    There is a ratio of number of boys to girls 3:5. After adding 5 boys and 3 girls, the ratio become 5:7. How many girls were there at first?

    asked by Surya
  149. Math

    There is a ratio of number of boys to girls 3:5. After adding 5 boys and 3 girls, the ratio become 5:7. How many girls were there at first?

    asked by Surya
  150. Statistics

    A construction company builds apartment buildings. The construction time follows a normal distribution with a mean time of 200 days and a standard diviation of 20 days. (a) What is the probability of completing a building in 224 days or less? (b) What is

    asked by Donna
  151. math

    A telephone company's goal is to have no more than 4 monthly line failures on any 100 miles of line. The company currently experiences an average of 5 monthly line failures per 50 miles of line. Let x denote the number of monthly line failures per 100

    asked by k
  152. Algebra/Trig Check Answers please

    Can you please check these answers thanks 1. A ladder 14 feet long is leaning against a house. The foot of the ladder is 4.8 feet from the house. Find the angle of elevation of the ladder and the height it reaches on the house. Answer: 13.2=height 18.9

    asked by Missy
  153. English

    Here is the criticism on the novel I need to improve 1) The story is told by a first-person narrator and is thus a faked autobiography. To enhance realism to the story (to reinforce the idea of realism), Defoe supplies many facts about Robinson (is is

    asked by Henry2
  154. ELA

    We have to make an ad for dog food What should I name the brand of the food?

    asked by Hayden
  155. math

    I need .5 feet of ribbon to make one decoration. How many feet of ribbon do I need to make 600 decorations?

    asked by jill
  156. Music

    List the elements of music.

    asked by Sasha
  157. science

    in the first second of its flight, a rocket ejects 1/60 of its mass with a velocity of 2400 m/s the acceleration of the rocket is

    asked by arjun
  158. math

    mary purchaseda mattress set for 800$ she paid 44$ in taxes what was the sales taxe rate

    asked by vash
  159. British Literature

    In the following passage from Chaucer's General Prologue, "In all the parish not a dame stirred, Towards the altar steps in front of her, And if indeed they did, so wrath was she As to be quite out of charity," I believe that the Wife of Bath can best be

    asked by Scooby10
  160. English

    Here is a part on Defoe's life you have already revised. THank you I added a sentence I need you to check (sentence 4) 1) He was born in London 1660 into a Puritan family and lead a life full of interesting and important events. He was educated in one of

    asked by Henry2
  161. British Literature

    Charlotte Turner Smith's sonnet "Written the close of Spring" best exemplifies what motif? Examples given are the parallels between human existence and nature; the cyclical nature of human existence; the facrt that the happiness of youth comes only once;

    asked by Scooby10
  162. British Literature

    In "A Vindication of the Rights of Woman, Mary Wollstonecraft argues that women should receive education because of what? Could it be either raising a family requires good judgment or that they require some means of supporting themselves independent of

    asked by Scooby10
  163. english

    i need help making my conclusion sentence more sense for essay on love. True love be built on solid base of trust, commitment, selflessness and shared admiration without judgment and physical attraction.

    asked by Mohammad
  164. Math

    How do I solve this using substitution method? 7x+9y=-38 -6x+y=50

    asked by Edith
  165. algebra

    A taxi driver charges a flat rate of $3.00 and $0.08 per mile traveled

    asked by tony
  166. Social 30-1

    Who benefited from the growth of classical liberalism during the industrial revolution? Who did not benifit from it? Why didn't the theorys of classic liberalism extend to all classes and people?

    asked by Peter
  167. physics

    A string connecting a car of a certain mass, x1, on an air track is connected to another mass, x2, by a string over a pulley. If the string has appreciable mass will the car still undergo constant acceleration? Explain. I think it will still undergo a

    asked by Emily
  168. us history

    What groups in America gained the most from the war? What groups lost the most? For which groups, if any, did things stay just about the same? How did the war influence the place of slaves in America?  Of Indians?  Women?

    asked by Desiree
  169. us history

    Both the Federalists and Anti-Federalists claimed to represent the true spirit of the Revolution.  Which group do you think was right? Why?

    asked by Desiree
  170. us history

    Tracing the history of the colonial-British relations, defend or refute this statement: The American Revolution makes no sense.  From 1607 – 1775, the colonists, colonial governments, Parliament, and the King were all British – all under the umbrella

    asked by Desiree
  171. Calculus

    hah im trully very SORRY, ok now i double checked.. so everything should be right .... u, v, w are UNIT VECTORS. the angle between u and v is 25 degrees and the angle between vector v and w is 35 degrees. find (u+w-3v). NOTE: vector u and w are on opposite

    asked by kally
  172. percentage

    Choon yong was asked to paint a wall of area 84 meter square.In one hour,he had painted 21meter square. a)what percentage of the wall was left unpainted?

    asked by Da S
  173. Engineering

    Calculate the moment about a point (5; 4; 3) ft. caused by the forces P = 3^i - 2^j - 4^k lb. and Q = 5^i + 7^j - 2^k lb. acting at the points (7; 2; -2) ft. and (-3; -2; 5) ft., respectively. What I did was this; vector r1= (7,2,2) - (5,4,3) = 2i-2j-5k

    asked by Aaron
  174. Chemistry

    How much heat is required to raise the temperature of a 65-g sample of water from 32 degrees celsius to 65 degrees celsius

    asked by Lisa
  175. Math

    y/2-5y/6+1/3=1/2 Please help me solve this problem.

    asked by Lisa
  176. Science

    1. These are a few descriptor words that we use to describe some organisms: carnivore herbivore scavenger carrion detrital feeder decomposer filter feeder producer Choose words which can be applied to: a) sandworm (Parchment Worm) b) soldier crab c)

    asked by CrissyXD
  177. algebra

    The following graph shows how a 4-color web printing press depreciates from the year 2006 to the year 2010. It was purchased new in the year 2006; therefore x = 0 represents the year 2006. X – axis (horizontal) = years starting from 0 = 2006 and

    asked by jim
  178. Math

    Whats the quadratic formula??

    asked by Marko
  179. Calculus

    Consider the differential equation, dy/dx=(x+1)/y^2 with the initial condition y(0)=3. Write down the particular solution, and hence, calculate the value of y when x=8.7, to 3 dec places.

    asked by Yvonne
  180. ece

    ty ms. sue

    asked by de
  181. Calculus

    Can someone help me with this question. With steps. Examine the continuity of the function h(x)= -x, if x0

    asked by Matthew
  182. Sttistic

    tobt = 1.49. Report the statistical results using the correct format. To find the t-crit value, one must first find the df. This can be found by subtracting one from N. So, 25-1 = 24. Using the one-tailed t-table from Appendix B (Heiman, 2004), with an

    asked by Beverly
  183. Calculus

    Verify this question 1. Determine lim as x->3 (3x-8)/(4x-12), if it exists. (3(3)-8)/(4(3)-12) =1/0 Therefore it doesn't limit doesn't.

    asked by Matthew
  184. median

    what is the median for 9,2,8,1

    asked by amy
  185. Biology

    What important role does the marine compost play in a marine ecosystem?

    asked by Mae
  186. Art

    Give 4 examples of graphic designs.

    asked by Sasha
  187. physics

    The Earth orbits the Sun once per year.What is the centripetal force keeping the Earth in orbit? T = 1 year (convert to seconds) r = 1.5e+11 meters m = 6e+24 kg

    asked by brett
  188. chemistry

    about thermodynamics

    asked by Anonymous
  189. Economics

    The service of mechanic in fixing the radiator of his car.ist excluded or included gross domestic product and how?

    asked by Tommy
  190. physics

    a circular disc rotates on a thin air film with a period of 0.3s. its moment of inertia about its axis of rotation is 0.06kgm^2. a small mass is dropped onto th disc and rotates with it . the moment of inertia of the mass about the axis of rotation is

    asked by ashely
  191. English

    Thank you very much! Can I divide my work into summary, narrative structure, and main themes? This is the very first part of the summary. I don't know if it is correct to use the present. Could you please revise it? 1) At the beginning of the novel we get

    asked by Henry2
  192. Physics

    A force of 20N applied parallel to the surface of a horizontal table,is just sufficient to make a block of mass 4kg move on the table.calculate the coefficient of friction between the block and the table.

    asked by Jeremiah
  193. Science

    How do fossils help to correlate layers of rock?

    asked by M.
  194. english

    i not know how to expand my thought on love. i now realize that love not be unconditional. this only exist in fantasy, but in real life it not like this because you not be able to sacrifice yourself for someone else's sake, especially if they are doing a

    asked by Mohammad
  195. Meteorology

    I have a skew t diagram and I need help with the following Temperature at the surface: Dewpoint at the surface: Winds near the surface: Temperature at 700 mb: Dewpoint at 700 mb:

    asked by Jessenia
  196. British Literature

    Which aspect of an epic is present in the following passage from Beowulf? "Then he saw, hanging on the wall, a heavy Sword, hammered by giants, strong and blessed with their magic, the best of all weapons but so massive that no ordinary man could lift its

    asked by Scooby10
  197. Algebra

    Find the square roots of 25

    asked by Sara
  198. english

    is this a good narrative essay i wrote? A very good choice The day I crashed the bike is very vivid still. I destroyed someone else’s property. The property I broke was not very valuable. Five years ago, my family and I went to Cloverdale, California, My

    asked by Fea
  199. communication

    we will begin with the history, then present situation, and with the future. If this were a sentence in an extemporaneous presentation, a.Preview Statement b.Attention Strategy c.Transition to Main Point Three d. Thesis Statement I think it is a thesis

    asked by Anonymous
  200. algebra

    Hong goes running Monday, Wednesday, and Friday of each week. Each Monday he runs miles, each Wednesday he runs miles, and each Friday he runs miles. How many total miles does he run in weeks?

    asked by mimi
  201. British Literature

    Does Amelia Lanier make any of the following arguments in "Eve's Apology in Defense of Women?" Eve asserts the superiority of women over men; Adam is to blame for the expulsion from Eden as he is wiser and more powerful and should have known better; Eve is

    asked by Scooby10
  202. Statistics

    If red has a probability of occurrence of .70 and black has a probability of occurrence of .30 and they are the only choices what is the probability that you pick the right color 10 out of 10 times and what is the standard deviation. I keep getting

    asked by Joe D.
  203. Calculus

    u, v, w are UNIT VECTORS. the angle between vector v and w is 35 degrees. find (v+w-3v). NOTE: vector u and w are on opposite sides of vector v.

    asked by kally
  204. Accounting

    Case study 2 Sailmakers Ltd John Jeffries recently left the army after more than 20 years in the service. He had decided that at 45 years of age it was time to start a second career. Throughout most of his life John had a passion for yachting and had

    asked by Help me :)
  205. communication

    organized the body of her presentation with the following ideas: First major section - drunk driving accidents have increased between the hours of 2AM and 5AM in Oak Cliff. Second major section - the City of Dallas should increase police protection outside

    asked by Anonymous
  206. ece

    let me in said the pin is an example of? A. assonance b. metaphor c. alliteration d. personification i choose d is this correct

    asked by Deb
  207. physics

    a stretched string is observed to vibrate with frequency 30Hz in its fundamental mode when the supports are 60cm apart. the amplitude at the antinode is 3cm.the string has a mass of 30kg.calculate the speed of propagation of the wave and the tension

    asked by ashely
  208. physics

    a mass of 60kg slides on a table. the frictional force is 60 times the velocity and the mass is being pushed with a force of 54sin2tN.find the velocity as a function of time if (v)=0 at (t)=0

    asked by ashely
  209. Calculus

    SORRY, i wrote this question wrong before ... u, v, w are UNIT VECTORS. the angle between u and v is 25 degrees and the angle between vector v and w is 35 degrees. find (v+w-3v). NOTE: vector u and w are on opposite sides of vector v.

    asked by kally
  210. Physical science

    Is it possible for an object to have more kinetic energy but less momentum than the other object? Less kinetic energy but more momentum? *i know the answer to both questions is yes, however, i cannot think of examples ??

    asked by Jess
  211. physics

    A string connecting a car of a certain mass, x1, on an air track is connected to another mass, x2, by a string over a pulley. If the string has appreciable mass will the car still undergo constant acceleration? Explain. I think it will still undergo a

    asked by Emily
  212. Intermediate Algebra

    A=Ao(1-r)^2 for r

    asked by Bobby
  213. English

    Sorry, I forgot to include this part. Thank you very, very much. 1) Robinson defeats the mutineers and rescues the legitimate crew. At last, Robinson and the ship’s crew sail back to England. 2) After 28 years on the island and 35 years of total absence

    asked by Henry2
  214. Sociology

    what is a bureaucracy?

    asked by Tariq
  215. us history

    How did demonstrations against imperial policy include obvious violations of the law? How did colonists justify their actions? Are those justifications valid? Did they have any legal means of expressing discontent?

    asked by Desiree
  216. chemistry

    Calculate the following: (a) mass of water in the hydrate sample (g): (b) number of moles of water in the sample: (c) mass of pure salt in the sample (g): (d) number of moles of salt in the sample: (e) molar ratio of water to salt in the sample: If the

    asked by Tony
  217. math

    can someone please help me understand how to get a z score. For example I have to find the z score for: x and y and x is 2 and y is 3

    asked by patinace
  218. math

    The sum of the digits of a two-digit number greater than 50 is 12. The difference between the digits is 4. Find the two-digit number

    asked by jo
  219. Chemistry

    How much 0.5 M HCl is needed to neutralize 5.5 kg of ammonia dissolved in 6 gal of water?

    asked by Amanda
  220. algebra

    would you please help me answer this question??? thanks mary wants to spend $70. at most for gifts but only has 60 cubic inches of space in her suitcase. rings cost $7 and take up 3 cubic inches of space and scarfs are $5 and take up 15 cubic inches. Write

    asked by ann
  221. statistics

    5. The ages of husbands and wives in a community were found to have a correlation coefficient equal to +0.8; the average of husbands’ ages was 25 years and that of wives’ ages 22 years; their standard deviations were respectively 4 and 5 years. Find

    asked by Deba
  222. Math

    Seven thousand raffle tickets are to be sold at $10 each to benefit a local community group. The prizes, the number of each prize to be given away, and the dollar value of winnings for each prize are as follows: Prize Number to Be Given Away Dollar Value

    asked by Krista
  223. Statistics

    I need help with (b): A small company with 5 employees wants to know some statistics about their employee's ages. They surveyed the 5 employees and found that their ages were: 22, 29, 35, 37 and 42. (a)Determine: Mean age: 33 Median: 35 Range: 20 Variance:

    asked by Donna
  224. Statistics

    Seven thousand raffle tickets are to be sold at $10 each to benefit a local community group. The prizes, the number of each prize to be given away, and the dollar value of winnings for each prize are as follows: Prize Number to Be Given Away Dollar Value

    asked by Krista
  225. math-measurement

    How do i subtract 20 minutes 45 seconds from 1/2 hour

    asked by kayla
  226. tax and discount

    Carmen is going to buy a pair of jeans that cost $30.00. the jeans are on sale for 20% off. Carmen knows she will pay 8% ales tax. what will the final cost of Carmen's jeans after the discount and sales tax?

    asked by darlene
  227. Algebra

    the denominator of a fractio is an integer that is one greater than the numerator. A second fraction is the reciprocal of the integer that is one less than the numerator of the first fraction. If the product of the two fraction is 3/8 identify the first

    asked by Mikayla
  228. Calculus

    Is this the right explanation for this question 1. Examine the continuity of the function h(x)= -x, if x0 Answer: Since h(x)= -x, if x0 is h=|x|, we can conclude that the function is 1. continuous everywhere 2. discontinuous at x=0 because limit from the

    asked by Matthew
  229. Calculus (Antiderivatives)

    What is the antiderivative of the following expression? 3x(x^2 + 7)^3

    asked by Mishaka
  230. PHYSICSSS

    While an elevator of mass 2681 kg moves upward, the tension in the cable is 29.4 kN. (a) What is the acceleration of the elevator? (b) If at some point in the motion the velocity of the elevator is 1.04 m/s upward, what is the elevator's velocity 3.96 s

    asked by Anonymous
  231. Chemistry

    Calculate how many moles of sodium hydrogen carbonate are needed to produce 59 grams of H2O.

    asked by Keya
  232. Chemistry

    Calculate how many moles of sodium hydrogen carbonate are needed to produce 59 grams of H2O.

    asked by Keya
  233. Math

    Whats the quadratic formula??

    asked by Marko
  234. algebra

    If trend for the depreciation of the press continued, what would be its value in the year 2015? Show how you obtained your answer using the linear equation you found in part c). Answer: Show or explain your work here: e) If the trend continued, in how many

    asked by jim
  235. Spanish

    Answer in complete sentences. Te gusta más comer el desayuno o el almuerzo? ¿Por qué? My answer: Me gusta más comer en el desayuno porque es nutritivo y bueno.

    asked by Anonymous
  236. science

    what is the nature of solute particles in electrolyte solution?

    asked by julmuner ibrahim
  237. Chemistry

    How do you find the ratio of moles of oxygen to moles of tin? What would be the Empirical formula of tin oxide from the result of ratio? From my calculations I got the moles as: Moles of oxygen = 1.761 x 10^-2 Moles of Tin = 8.944 x 10^-3 Thanks!

    asked by Jake
  238. Statistics

    A bucket has 3 blacks and 7 red balls. (a) What is the probability of drawing a black fall on the first draw? (my answer - 3/10 x 100 = 30%) (b) What is the probability of drawing a red ball on the 2nd draw if you replace the black ball you drew on the

    asked by Laura
  239. ece

    words are A)communication shortcuts B) not arbitray symbols C) unique to ea. indidividual in english D) thoughts written down I like A and also D thoughts written down not sure which

    asked by de
  240. biology

    how to identify the blood types of an offspring?

    asked by diane28