Questions Asked on
January 30, 2011

  1. physics

    During the first 18 minutes of a 1.0-hour trip, a car has an average speed of 11 m/s. What must the average speed of the car be during the last 42 minutes of the trip be if the car is to have an average speed of 21 m/s for the entire trip?

    asked by thaokieu
  2. Chemistry

    If Kc = 0.143 at 25°C for this reaction, find the equilibrium concentrations of C6H12 and CH3C5H9 if the initial concentrations are 0.200 M and 0.075 M, respectively. a. [C6H12] = 0.041 M, [CH3C5H9] = 0.041 M b. [C6H12] = 0.159 M, [CH3C5H9] = 0.116 M c.

    asked by bob
  3. physics

    A man leans over the edge of a cliff and throws a rock upward at 4.9 m/s. Neglecting air resistance, two seconds later the rock's speed is what?

    asked by susan
  4. Physics

    A cord passes over a weightless and frictionless pulley. Masses of 200 g and 300 g are attached to the ends of the cord. Find the distance the masses will move during the 5th second after they are started from rest.

    asked by Sean
  5. Pre-Calculus-Trig

    A pole tilts 12 degrees from the vertical, away from the sun, casts a 34 foot long shadow on level ground. The angle of elevation from the end of the shadow to the top of the pole is 64 degrees. How long is the pole?

    asked by Chloe Mack
  6. physics

    A cork on the surface of a pond bobs up and down two times per second on ripples having a wavelength of 7.30 cm. If the cork is 12.0 m from shore, how long does it take a ripple passing the cork to reach the shore?

    asked by gilbert
  7. physics

    The initial velocity and acceleration of four moving objects at a given instant in time are given in the following table. Determine the final speed of each of the objects, assuming that the time elapsed since t = 0 s is 2.0 s. initial velocity accerlation

    asked by thaokieu
  8. Pre-Calculus-Trig

    A pilot in a plane at an altitude of 22,000 feet observes that the angle of depression to a nearby airport is 26 degrees. How many miles is the airport from a point on the ground directly below the plane?

    asked by Chloe Mack
  9. chemistry

    imagine replacing one H atom of a methane molecule, ch4, with another atom or group of atoms. Account for the order in the normal boiling points of the resulting compounds:CH4(-161 celsius); CH3Br(3.59 celsius); CH3F(-78 CELSIUS); CH3OH(65 CELSIUS).

    asked by Anonymous
  10. Pre-Calculus-Trig

    A lighthouse keeper 100 feet above the water sees a boat sailing in a straight line directly toward her. As watches, the angle of depression to the boat changes from 25 degrees to 40. How far has the boat traveled during this time?

    asked by Chloe Mack
  11. physics

    Calculate the individual torques produced by the weights of the girl and boy on the see-saw in the figure above, given that Wgirl = 310 N and Wboy = 620 N and the length of the see-saw being 6m.

    asked by Anonymous
  12. Physics please help!!

    A mass M is initially at rest on a horizontal surface, μs=0.30 and μk=0.20 . A horizontal string then pulls M with a tension T. Forces below are magnitudes. Indicate if each statement is correct or incorrect If M does not accelerate, then T ≤ μsN M

    asked by Megan
  13. physics

    You stand at the top of a cliff while your friend stands on the ground below you. You drop a ball from rest and see that it takes 0.90 for the ball to hit the ground below. Your friend then picks up the ball and throws it up to you, such that it just comes

    asked by SAM
  14. physics

    A person going for a morning jog on the deck of a cruise ship is running toward the bow (front) of the ship at 2.2 while the ship is moving ahead at 6.8 . 1. What is the velocity of the jogger relative to the water? 2. Later, the jogger is moving toward

    asked by Tess
  15. us history

    What was the role of Social Darwinism in American imperialism? Are there implications of race underneath a belief in Social Darwinism?

    asked by Johnathan
  16. physics

    The components of vector A are Ax and Ay (both positive), and the angle that it makes with respect to the positive x axis is θ. Find the angle θ if the components of the displacement vector A are (a) Ax = 11 m and Ay = 11 m, (b) Ax = 19 m and Ay = 11 m,

    asked by thaokieu
  17. Physics

    A 100-Watt light bulb plugged into a 120-Volt outlet is left on for 60 seconds. How much energy (in Joules) is used up by the bulb during this time?

    asked by Joe
  18. physics

    The 2 kg block in Figure 7-25 slides down a frictionless curved ramp, starting from rest at a height of h = 3 m. The block then slides d = 12 m on a rough horizontal surface before coming to rest. Figure 7-25 (a) What is the speed of the block at the

    asked by Sierra
  19. physics

    Water flows through a horizontal tube of diameter 2.6cm that is joined to a second horizontal tube of diameter 1.7cm . The pressure difference between the tubes is 8.0kPa.Find the speed of flow in the first tube.

    asked by Sid
  20. Chemistry

    Is NO3- an ambidentate ligand?

    asked by John
  21. Pre-Calculus-Trig

    A straight road slopes at an angle of 10 degrees with the horizontal. When the angle of elevation of the sun (from horizontal) is 62.5 degrees, a telephone pole at the side of the road casts a 15 foot shadow downhill, parallel to the road. How high is the

    asked by Chloe Mack
  22. Pre-Calculus-Trig

    A 40 foot high flagpole sits on the side of a hill. The hillside makes a 17 degree angle with horizontal. How long is a wire that runs from the top of the pole to a point 72 feet downhill from the base of the pole?

    asked by Chloe Mack
  23. physics

    Before starting this problem, review Conceptual Example 7. The force vector A has a magnitude of 79.0 newtons (N) and points due east. The force vector B has a magnitude of 107 N and points 75.0 ° north of east. Find the (a) magnitude and (b) direction of

    asked by thaokieu
  24. physics

    a ferry boat is sailing at 12 km/h 30 degrees west of north with respect to a river that is flowing at 6 km/h. in what direction, as observe from the shore, is the ferry boat is sailing?

    asked by Anonymous
  25. Physics

    Two balls, each with mass 0.5g and carrying charge Q, are hung on strings 35cm and suspended from one point. The balls repel and form a 40 degree angle between them. What is the charge? CAN YOU WALK ME THROUGH THIS QUESTION?

    asked by Nick
  26. Intermediate Accounting

    E6-10 Assume that Serena Williams desires to accumulate $1 million in 15 years using her market fund balance of $182,696. At what interest rate must Serena's investment compound annually? I came up with 12,179.733 per year; but know this is incorrect.

    asked by Lori
  27. physics

    An equilateral triangle has sides of 0.15 m. Charges of -9.4, +8.0, and +2.5 µC are located at the corners of the triangle. Find the magnitude of the net electrostatic force exerted on the 2.5-µC charge. each cahrge has X10^-6 btw

    asked by hearttyy
  28. Pre-Calculus-Trig

    A woman on the top of a 448 foot high building spots a small plane. As she views the plane, its angle of elevation is 62 degrees. At the same instant a man at the ground-level entrance to the entrance to the building sees the plane and notes that its an

    asked by Chloe Mack
  29. Pre-Calculus-Trig

    A road rises 140 feet per horizontal mile. What angle does the road make with the horizontal?

    asked by Chloe Mack
  30. MATH

    Of all the videotapes in a large shipment, 21% have a defective tape, 16% have a defective case, and 11% have both defects. If you purchase one of the videotapes in this shipment, find the probability that it has the following. (a) A defective tape or a

    asked by puzzled
  31. Calculus

    A ladder 41 feet long that was leaning against a vertical wall begins to slip. Its top slides down the wall while its bottom moves along the level ground at a constant speed of 4 feet per second. How fast is the top of the ladder moving when its 9 ft above

    asked by Nick
  32. math

    peer has $4.20 in dimes and quarters. He has 21 coins. How many coins of each kind does he have?

    asked by joe
  33. Pre-Calculus-Trig

    Two surveyors, Joe and Alice, are 240 meters apart on a riverbank. Each sights a flagpole on the opposite bank. The angle from the pole to Joe (vertex) to Alice is 63 degrees. The angle from the pole to Alice(vertex)to Joe is 54 degrees. How far are Joe

    asked by Chloe Mack
  34. physics

    An object is moving along a straight line. The graph shows the object's velocity as a function of time. . What is the acceleration of the object in the interval from t = 5 s to t = 6 s?

    asked by thaokieu
  35. Physics

    a block , mass .10 kg, slides from rest without friction down an inclined plane 2m long which makes an angle of 20 degrees with the horizontal.(a) WWhat force accelerates the block down the plane?(b)j What is the velocity of the block when it reaches the

    asked by james
  36. Physics

    For a science fair competition, a group of High School students built a kicker-machine that can launch a golf ball from the origin with a velocity of 12.3 m/s and initial angle of 29.9° with respect to the horizontal. *Where will the golf ball fall back

    asked by Emily
  37. Pre-Calculus-Trig

    A surveyor stakes out points A and B on sides of a building. Point C on the side of the building is 300 feet from A and 440 feet from B. Angle ACB measures 38 degrees. What is the distance from A to B?

    asked by Chloe Mack
  38. physics

    In this problem you will determine the average velocity of a moving object from the graph of its position as a function of time . A traveling object might move at different speeds and in different directions during an interval of time, but if we ask at

    asked by Bre
  39. physics

    A race car traveling northward on a straight, level track at a constant speed travels 0.750km in 20.0s. The return trip over the same track is made in 25.0s. What is the average velocity of the car in m/s for the first leg of the run? What is the average

    asked by Anonymous
  40. physics

    A battleship simultaneously fires two shells toward two identical enemy ships. One shell hits ship A, which is close by, and the other hits ship B, which is farther away. The two shells are fired at the same speed. Assume that air resistance is negligible

    asked by Tess
  41. physics

    Two point charges, 4.0×10-6 C and -1.0×10-6 C, are located on the x axis at = -1.0 cm and = 3.0 cm. (a) Determine the electric field at the origin. (b)Determine the x coordinate of a point on the positive x axis where the electric field is zero; i.e., a

    asked by help
  42. science

    how does(what is the chemistry involved) k2so4 raise the boiling point of h2so4

    asked by stephen
  43. Chemistry

    Hi, could someone help me with these calculations for my lab; Given: Volume of vinegar analyzed:5 mL Con'c of NaOH: 0.09890M Avg. V of NaOH from titration:43.75 mL Moles of NaOH required to reach the equivalence point: ? Would this be

    asked by Adam
  44. physics

    A weight of 50.0 N is suspended from a spring that has a force constant of 190 N/m. The system is undamped and is subjected to a harmonic driving force of frequency 10.0 Hz, resulting in a forced-motion amplitude of 4.00 cm. Determine the maximum value of

    asked by sir
  45. Chemistry

    Is NO3- an ambidentate ligand?

    asked by John
  46. Chemistry

    An ideal monatomic gas initially at 298 K and 1 atm pressure is expanded from a volume of 1 liter to 2 liters. Consider separately isobaric, isothermal and adiabatic expansions to accomplish this. In each case, calculate the following: a) The final

    asked by Marcus
  47. physics

    A pilot flies her route in two straight-line segments. The displacement vector A for the first segment has a magnitude of 242 km and a direction 30.0o north of east. The displacement vector for the second segment has a magnitude of 177 km and a direction

    asked by thaokieu
  48. Physics

    a vehicle weighs 120 kg wt brakes are applied so that the vehicle stops rolling and starts skidding find the force of friction if the coefficient of friction is 0.4

    asked by Shibasish
  49. algebra

    heidi left a 25% tip of $9.00 dollars on a meal. what was the cost of the meal before the tip? what was the total cost of the meal before the tip?

    asked by veronica
  50. College Chem

    How many moles of O atoms are there in a sample of 86g sucrose (C12H22O11)?

    asked by Nae
  51. Physics

    The air speed indicator of a plane that took off from Detroit reads 373 km/h and the compass indicates that it is heading due east to Boston. A steady wind is blowing due north at 42.3 km/h. Calculate the speed of the plane with reference to the ground. If

    asked by Emily
  52. World History

    What were the objectives and major accomplishments of the voyage of exploration undetaken by chinese, polynesians, and other non-western people?

    asked by Nini
  53. Physical science

    Athlete runs twice round the circular athletics track. The track has a total length of 320 m and a diameter of 100 m. Make a scale drawing of the track. Use a scale of 1 cm represents 10 m. Taking the start as point 1, find both the athlete's distance and

    asked by Khanyisa
  54. Chemistry 2

    The rate constant is 9.50x10^-5 L/mol*s at 195 degrees Celsius and 1.30x10^-3 L/mol*s at 258 degrees Celsius. What is the activation energy of the reaction? I'm not sure what I'm doing wrong here. I found the natural log (ln) of: 9.50x10^-5 = -9.26

    asked by Aestas
  55. finance

    If you purchased a zero coupon bond today for $225 and it maturity value is $1,000 in 11 years, what rate of return will you earn on that bond?

    asked by Teresa
  56. Physics

    A ball is thrown horizontally from the top of a building 55.4 m high. The ball strikes the ground at a point 65 m from the base of the building. The acceleration of gravity is 9.8 m/s2 . Find the time the ball is in motion in seconds.

    asked by Ashley
  57. Word within the word list 9

    what are the answers to vulpine:porcine:: clever:gluttonous fox:grapes telegraph:photograph ignominious:glorious Please respond asap thanks!

    asked by Megan
  58. Math- Geometry

    A board 20 feet long is cut into two boards with lengths in ratio of 5 to 2. To the nearest tenth of a foot, how lng is the longer piece of the board?

    asked by meghan
  59. science

    Each month the Speedy Dry Cleaning Company buys one barrel (0.160 m3) of dry cleaning fluid. Ninety percent of the fluid is lost to the atmosphere and 10% remains as residue to be disposed of. The density of the dry cleaning fluid is 1.5940 g/mL. Draw a

    asked by Jazmin
  60. history

    what is the missouri compromise (in not confusing words)?

    asked by Sarah
  61. chemistry

    Please show me how to calculate the number of moles in 8.45 x10 to 21st power formula units of calcium chloride?

    asked by Bev
  62. physics

    Which one of the following situations is not possible? A body travels with a constant acceleration and a time-varying velocity. A body travels with a northward velocity and a northward acceleration. A body travels with a northward velocity and a southward

    asked by thaokieu
  63. 6th grade math

    What is 4 divided by n is 1/2?

    asked by Anna
  64. math

    could someone please help me with this problem. Which of the following phrases does not describe the number -¾? (Points : 1) rational number irrational number real number negative number

    asked by Jasper
  65. COM/155

    For this project, I had to write 5 clear, concise, well written sentences about what I've learned this week. Do these sentences look correct to you? One of the most important lessons I have learned is to stay away from using vague or inappropriate words in

    asked by Mark
  66. Physics

    A golf ball is hit with an initial angle of 54.7o with respect to the horizontal and an initial velocity of 85.1 mph. It lands a distance of 104.3 m away from where it was hit. By how much did the effects of wind resistance, spin, and so forth reduce the

    asked by Emily
  67. math

    one and six hundredths subtracted from eight and thirty two hundreaths? Help me please. Thanks!!!!

    asked by Ivis
  68. finance

    what is the interest and cost on a 6 month loan of $1,500 at13.2% simple annual intrest

    asked by tina
  69. pyschology

    I have to write a paper on the following question: Dissent and altruism are a matter of personal conviction, but situation factors are involved also. Analyze five situational factors that are involved when a person decides to "rock the boat" and choose

    asked by takisha buttyan
  70. Intermediate Accounting

    E6-5 Mike Finley wishes to become a millionaire. His money market fund has a balance of $92,296 and has a guarateed interest rate of 10%. How many years must Mike leave that balance in the fund in order to get his disired $1,000,000? I am getting $9,229.60

    asked by Lori
  71. physics

    The magnitude of the electric field between the plates of a parallel plate capacitor is 3.0X10^5 N/C. Each plate carries a charge whose magnitude is 0.17 µC. What is the area of each plate? can someone please work with it in numbers!!

    asked by hearttyy
  72. Pre-Calculus-Trig

    Two trains depart simultaneously from the same station. The angle between the two tracks on which they leave is 120 degrees. One train travels at an average speed of 45 mph and the other at 70 mph. How far apart are the trains after three hours?

    asked by Chloe Mack
  73. math 141

    Maria just inherited $10,000. Her bank has a savings account that pays 4.1% interest per year. Some of her friends recommended a new mutual fund, which has been in business for three years. During its first year, the fund went up in value by 11%; during

    asked by puzzled
  74. english

    i have to write an essay of my choice so i chose game designer can someone tell me the duties of a game designer well this is what i found: "A game designer is responsible for designing the layout and gameplay of a video game, including the characters,

    asked by needhelp
  75. trigonometry

    Derive the identity cot² A+1= csc² A to derive this identity does it mean to change the cot^2 A + 1 into csc^2 A ??

    asked by Anonymous
  76. com 155

    • Write several sentences describing a recent interaction with a friend or family member about personal finance or credit cards. This interaction may be imagined or real. • Use at least five different pronouns in your sentences. • Identify all

    asked by robin
  77. principles of micreconomics

    In 2 hours, Scott can read 15 pages of spanish literature. a. what is Scott's opportunity cost of reading 30 pages of literature?

    asked by carroland
  78. statistic

    2. A sociologist conducted a study of divorce patterns in a Midwestern city. In the study, 200 divorced people were selected at random, and X, the number of years married before divorce, was measured. From this sample, it was found that the sample mean was

    asked by Tian
  79. physics

    A force vector points at an angle of 54.9 ° above the +x axis. It has a y component of +108 newtons (N). Find (a) the magnitude and (b) the x component of the force vector.

    asked by thaokieu
  80. math

    The width of a rectangular prism is w centimeters. The height is 2 centimers less than the width. The length is 4 centimeters more than the width. If the volume of the prism is 8 times the measure of the length, find the dimensioon of the prism.

    asked by hjd
  81. Physics

    A horse canters away from its trainer in a straight line, moving 160 m away in 12.0 s. It then turns abruptly and gallops halfway back in 4.5 s. (a) Calculate its average speed.m/s (b) Calculate its average velocity for the entire trip, using "away from

    asked by Megan
  82. calculus

    A dam 15 m high holds the water in reservoir . For safety reasons , the water level is maintained at a height 3 m below the top of the dam. At best of the dam , engineers have installed a vertical door in the shape of an equilateral triangle with sides of

    asked by hussain
  83. phys

    An airplane must reach a speed of 185 mi/h to take off. If the runway is 500 m long, what is the minimum value of the acceleration that will allow the airplane to take off successfully?

    asked by Lisa
  84. Math

    Troy spends the same amount of time playing violin, studying, and walking. For a total of 80 hours, how many minutes does he spend doing each activity?

    asked by Troy
  85. Math

    John is passing out RED, WHITE, and BLUE construction paper for an art project. There are (12) people in his group. John, who likes to show off, tells everyone to watch closely as he hands out the paper. The first person gets a RED paper. John puts the

    asked by Amy
  86. math

    a and b represent 2 walls. wall a costs $180.00 to paint.at the same rate calculate the cost of painting wall b?

    asked by kimberly
  87. physics

    A force vector has a magnitude of 576 newtons and points at an angle 43o of below the positive x axis. What are (a) the x scalar component and (b) the y scalar component of the vector?

    asked by thaokieu
  88. pharmacy tehnician

    how are amber vials named

    asked by amritpal
  89. Physics

    In an arcade game, a ball is launched from the corner of a smooth inclined plane. The inclined plane makes a 33.3° angle with the horizontal and has a width of w = 42.9 cm. The spring-loaded launcher makes an angle of 45.0° with the lower edge of the

    asked by Mark
  90. Trigonometry

    Derive the identity cot² A+1= csc² A

    asked by Anonymous
  91. Math

    simplify: 5-s(4-7)+3s show steps

    asked by Bob
  92. english

    Write a one paragraph resume statement. This is the paragraph that might go at the top of your resume - the paragraph that convinces the human resource officer to take your application seriously. It must be persuasive and run for about five sentences.

    asked by Anonymous
  93. physics

    The drawing shows the electric potential as a function of distance along the x axis. Determine the magnitude of the electric field in the following regions: A to B Bto C C to D C:\Users\Public\Pictures\mm\p19-56.gif

    asked by hearttyy
  94. physics

    The drawing shows the electric potential as a function of distance along the x axis. Determine the magnitude of the electric field in the following regions: A to B Bto C C to D C:\Users\Public\Pictures\mm\p19-56.gif

    asked by hearttyy
  95. math

    mrs loya sponsers the spanish club at central middle school.the club has 8 members who are sixth graders,12 members who are sventh graders, 10 members who are eight graders. what percent of the spanish club members are seventh graders(what is your answer

    asked by rm
  96. English

    Can you please check if these sentences are grammatically correct,please? Thank you very much. 1)It’s two years since I last saw him (OR I saw him last?) How long is it since you last saw him? 2) I last (is last placed between subject and verb?) saw him

    asked by Franco
  97. Math

    A car can travel 410 miles on 41 gallons of gasoline. How far can it travel on 19 gallons?

    asked by Hailey
  98. Math(Please check)

    During the month of February, a flu epidemic hit the University. The number of people sick at time t (measured in days) is given by the function P(t). The rate at which the epidemic is spreading on February 3 is 110 people per day. How is the information

    asked by Hannah
  99. Dynamics

    Car A is moving at a constant speed Va=75 km/h, while car C is moving at a constant speed Vc=42 km/h on a circular exit ramp with radius p=80m. Determine the velocity and acceleration of C relative to A.

    asked by Matt
  100. Algebra

    Graph the two equations to solve the system. Write the ordered pair solution like this (1,2) with no spaces, or write no solution or infinitely many solutions. x + y = 6 and x - y = 4

    asked by joshua
  101. Algebra

    Graph the two equations to solve the system. Write the ordered pair solution like this (1,2) with no spaces, or write no solution or infinitely many solutions. 1/2 x - 2y = 4 and 4y - x = -8

    asked by joshua
  102. chemistry

    How do I calculate the molecules of 3.52 moles CO2?

    asked by Bev
  103. physics

    High-performance race cars can accelerate from 0 m/s to 27 m/s (60 mi/h) in about 4 s. To see how large the acceleration due to gravity is, determine the time required for an object dropped from rest to attain a speed of 27 m/s. Ignore air resistance.

    asked by thaokieu
  104. Math(Please check)

    Find the derivative of f(x)=7x-19 at x=2. I think that the derivative would be 7 and theb times 2 so 14. Is this correct or would it just be 7.

    asked by Hannah
  105. English Comp.

    I'm hoping this is a better thesis statement, please let me know. "Although most Schools of Pharmacy have added cultural competency training to their curriculum, not all have added the Service learning experience, which should be a requirement for all

    asked by Meredith
  106. physics

    A baby elephant is stuck in a mud hole. To help pull it out, game keepers use a rope to apply a force FA, as part a of the drawing shows. By itself, however, force FA is insufficient. Therefore, two additional forces FB and FC are applied, as in part b of

    asked by thaokieu
  107. physics

    Vector has a magnitude of 4.10 units and points due east. Vector points due north. (a) What is the magnitude of , if the vector + points 55.1 ° north of east? (b) Find the magnitude of + .

    asked by thaokieu
  108. Physics please help!!

    A mass M is initially at rest on a horizontal surface, μs=0.30 and μk=0.20 . A horizontal string then pulls M with a tension T. Forces below are magnitudes. Indicate if each statement is correct or incorrect If M does not accelerate, then T ≤ μsN M

    asked by Megan
  109. Physics

    Hi~ Thank you for your help~ Imagine you are on an island and you have two coconuts. The coconuts are launched with the same initial velocity. The trajectory of coconutA is such that coconutA goes very high, but falls not much farther from the spot it was

    asked by APpreciative Student
  110. Health

    why isnt there any correlation between the monthly rainfall and Ross River Virus?

    asked by Trace
  111. health...help plzz

    Explain the difference between a Doctor of Dental Surgery and Doctor of Medical Dentistry. Explain the difference between an allopathic and osteopathic physician.

    asked by brian
  112. math

    A car is traveling at 120 km/h from town A, then turns right and slows down at 50 km/h and stops at town B. How far is town B from town A?

    asked by Anonymous
  113. physics

    A flat horizontal surface with an area of 650 cm2 is inside a uniform electric field of 2.99×104 N/C. The angle between the area vector and the electric field is 14.8°. What is the electric flux through the surface?

    asked by Ana
  114. Chemistry

    Enough SO3 is added to an evacuated container so its initial pressure is 4.00 atm. Calculate the mole fraction of O2 in the equilibrium mixture if the total pressure at equilibrium is 5.00 atm.

    asked by Frank
  115. physics

    activity to demonstrate the fact that for a metallic wire of uniform material density and thickness, the resistance increases directly with its length.

    asked by yash
  116. Algebra 2

    The purity of gold is measured in karats. Twenty-four karat gold is pure gold and k karat gold is k/24 gold by mass. One piece of 16-karat gld jewelry has a mass of 30 grams and another piece of 10-karat gold jewelry has a mass of 40 grams. Find the number

    asked by Jay
  117. com/155

    My assignment is to write a paragraph about what I've learned this week. It should contain clear and concise sentences, with correct spelling and puncuation. How do you think I did? This Weeks Material Has Changed The Way I Write This weeks material has

    asked by Mark
  118. college chemistry

    2h2o2(aq) ---> 2h2o(l) + o2(g) if someone puts 0.470 ml of hydrogen peroxide on a cut how many moles of hydrogen peroxide are used? Assume the density of the solution is equal to the density of water.

    asked by Help please
  119. math

    michelle runs 400 meters in 1 minute. if she completes in the 100-meter race , about how many seconds will it take her to run the race?(explain how you got your answer)

    asked by rm
  120. marketing

    What are the three essential lessons from Theodore Levitt's Marketing Myopia?

    asked by dan
  121. Science

    Consider 2 charged objects. One has a negative charge if 18 colombs. The 1 charges are separated by a distance if 0.9 m and a force of -2.7 N exists between them. Determine the charge of the other object.

    asked by Musha
  122. college algebra

    how do you perform the operations for 4 over 5 (-15 over 11 )

    asked by sharon
  123. geometry

    an isosceles triangle has a perimeter of 136 inches. If one of its equal sides measures 42 inches, what is the measure of the non-equal side?

    asked by Anonymous
  124. chemistry

    how long will it take to decompose 38% of A at 25 degrees celsius?

    asked by christine
  125. Physics

    Only two horizontal forces act on a 9.1 kg body. One force is 5.3 N, acting due east, and the other is 1.6 N, acting 56° north of west. What is the magnitude of the body's acceleration?

    asked by Ethan
  126. Excel

    When I use the sum button it gives me the wrong answer but when I times it comes out right. How do I put the total in the total column? Please help if you know how use excel! Cost/Units Number of Units Total Cost $0.99 40 $2.99 25

    asked by crystal
  127. economics

    Suppose you wish to borrow 635.08 dollars today from a bank which charges interest at a rate of 4.14% per month. You promise to pay the loan back over 14 years by making the same payment each month (starting with month 1). What will be your montly payment?

    asked by Roo Kun
  128. english

    what is the part of speech in the following sentence all? kyle took all of the erasers off tom's pencils.

    asked by help please
  129. college calc

    vertical asymptotes of tan(pi*x)

    asked by zach
  130. chemistry

    i know the formula FC = # Valence Electron - bonds - lone pairs but am i supposed to use that formula for all elements on the problems for instance the teacher did this example :O: || C / \ O FC: 6-2-4=0 CFC: 4-4=0 I have no idea where the numbers came

    asked by jessie
  131. chemistry

    A non-metal element which lies in the third row of the Periodic Table forms a gaseous compound H2Y with hydrogen and the compound Li2Y with lithium, which has a solid crystalline structure and a high melting point (greater than 900 °C). • A non-metal

    asked by joleen
  132. 8th grade Algebra

    Sharon and her camping group hiked 6 miles due north, stopped for lunch, and then hiked 8 miles due west, stopping at ther campsite for the night. What is the straight line distance from their original starting place to the campsite?

    asked by Elizabeth
  133. physics

    The magnitude of the electric field between the plates of a parallel plate capacitor is 3.0X10^5 N/C. Each plate carries a charge whose magnitude is 0.17 µC. What is the area of each plate?

    asked by hearttyy
  134. calculus

    Determine the volume of the solid forming by rotating about the x-axis, the region above the x-axos and below the curve y= 10x - 5x^2

    asked by Palmer
  135. Science EASY HELP

    I had posted this question before but no one answered for half and hour. I finished the first question i posted but i am stuck on this one: A rock that contains a cavity filled with crystals is called a geode. Why are the cyrstals in the middle of the

    asked by Monica
  136. Psychology

    Which if these questions does not help to assess the vaildity of research findings: a. How much did this study cost? b. Are the results presented fairly? c. What was the purpose of te research? d. How well was the study conducted?

    asked by S
  137. 7th Math

    If Loiuse can type 70 words in 2 minutes and Corey can type 120 words in 3 minutes, which statement is true?? Loises rate is 50 words per minutes slower than coreys rate or Louise rate is 5 words per minutes slower than coreys rate

    asked by Lisa
  138. Physics

    Find the average velocity over the time interval from 1 to 3 seconds. Express your answer in meters per second to the nearest integer.

    asked by Whitney
  139. math

    Alex mom is enlarging a picture. If the photo dimensions are 3.5 x 7" and the scale factor is 8/5 what will be the dimensions of the enlargement?

    asked by koty
  140. statistic

    1. Past experience indicates that the variance, ¦Ò2x, of the scores, X, obtained on the verbal portion of a test is 5,625. Similarly, the variance ¦Ò2y, of the scores, Y, on the mathematical portion is 2,500. (a) A random sample of size n = 64 yields a

    asked by Tian
  141. American History

    How did the pattern of European immigration shift in 1890?

    asked by Ali
  142. Calculus

    Find the area enclosed by the following functions from x=0 to x=2: y=sqrt*(x+2) y=1/(1+x) I got 2/3(8)-ln3-2/3(sqrt*8) can someone please verify this?

    asked by Rachel
  143. Math

    4(2x+1)-29=3(2x-5) I need help

    asked by joe
  144. American Government

    All of the following serve at the pleasure of the President and can be dismissed at any time, Exept: The white house chief of staff secretary of state chariman of the federal reserve board white house press secretary

    asked by Anonymous
  145. marketing

    ABC Technologies manufactures computer accessories, such as modems and network cards. Even though the company has several purchasing managers, the company president has final authority on all purchases over $500, including the selection of the supplier. In

    asked by becky
  146. Accounts payables

    on january 1, 1996 a company paid for auto insurance. the insurance term began on january 1, 1995 and concluded on december 31, 1995. on january 1, 1996, the entry to record this transaction is

    asked by Bella
  147. science

    what is the acceleration of a small metal sphere as it falls through water? sphere weighs .28 n, volume is 13cm^3

    asked by Anonymous
  148. algebra

    6n+8=50 answer using the balancing method

    asked by jane
  149. research paper

    wat things do i need to include in a research paper?

    asked by mmee
  150. physics

    If an impulse of 60 Ns is required to stop and object, list in your log three force and time combinations that can stop an object.

    asked by kevin
  151. math

    A room is 12 feet by 16 feet. on a scale drawing the 12-foot wall is 4 inches long. how long will the 16-foot wall be?(explain how you got answer)

    asked by rm
  152. math

    a room is 12 feet by 6 inches. on a scake drawing the 12 foot wall is 4 inches long. how long will the 16-foot wall be?(explain how you got that asnwer)

    asked by Anonymous
  153. Math

    4+5X>6x to the power 2

    asked by Prim rose
  154. physics

    The drawing shows the electric potential as a function of distance along the x axis. Determine the magnitude of the electric field in the following regions: A to B Bto C C to D C:\Users\Public\Pictures\mm\p19-56.gif

    asked by hearttyy
  155. Computer

    Write the program that will calculate and display the career statistics for a hockey player. The program must be written in Visual Basic 2008 console application.

    asked by dallay
  156. Physics

    Both block A and B mass 3kg and are initially 2m above the ground. They slide down a smooth ramp and then across a rough surface with a speed of 4m/s. How much energy did the block lose due to the friction along the rough surface? AND is transformed into

    asked by Stephanie
  157. 3rd grade math

    What patterns help you divide? DRaw a picture or make a chart to show how to divide 1600 by 4. Give the quotient. We know the answer but having trouble to make a chart to show the outcome. Please help. Thanks in advance

    asked by kim
  158. calculus

    assume f(x)=-2x+8 and g(x)=5x. What is the value of (f-g)(2)? i got -6 but i don't think that's right...is it?

    asked by Lily
  159. geomertry

    what is radius and diameter in third grade math

    asked by nea
  160. math

    solve 5(3x-7)+2=7x+7

    asked by eva lucas
  161. 6th grade math

    what is 1/4*1/2=4d?

    asked by Sara
  162. chemistry

    Predict the empirical formula of the compound formed by each of the following pairs of elements.a) Li,S b) Na,H c) Al,l d) Ca,O

    asked by Ernest
  163. AP Psychology

    You are the comissioner of a state lottery sytem that sponsers weekly drawings. Lottery ticjets have not been selling well over the past few months. Describe four ways you could take advantage of people's use of availability hueristic in order to boost

    asked by jdajaljk
  164. Math

    Find the slope of the curve at y=x^6 at x=-3. I know that to find the slope you do y2 - y1 / x2 - x1 but I do not know what to do here.

    asked by Hannah
  165. Physics =Please check

    You're on planet YZ and an astronaut observes that a 1.0 m long pendulum has a period of 1.50s. What is the free-fall accerlerttion on YZ? I know the answer is 17.6 because I worked it backwards but if the answer was given, I wouldn't know how to change

    asked by Ray Scholz
  166. Physics (repost)

    I made a pan flute with copper tubing (3/4 in diameter) to correspond to the following notes/lengths: C - 15.4cm D - 13.6cm E - 12.0cm G - 9.8cm A - 8.7cm The original instructions called for PVC pipe at 1/2in diameter, so the notes are off. How do I

    asked by Anonymous
  167. Science

    2 MgO + Cl 2 --> 2 MgCl 2 + O 2 Is this a single replacement?

    asked by Roy S.
  168. english

    what is the part of speech in the following sentence all? kyle took all on the erasers off tom's pencils

    asked by help please
  169. operating system

    in windows vista, how do you organize file list by file size?

    asked by jack
  170. mat/116

    solve by elimination method. 7r-2s=61 2r+7s=25

    asked by Lisa
  171. math

    what rule relating time and distance can help me calculate the traveled for 950 miles in bus at 60 miles per hour?

    asked by monserrate
  172. math

    what rule relating time and distance can help me calculate the traveled for 950 miles in bus at 60 miles per hour? d=60-t t=60d t=60+d d=60t

    asked by monserrate
  173. Chemistry

    What type(s) of isomerism is/are exhibited by potassium dioxalatodiaquachromate(III) dihydrate? (A) Geometric isomerism (B) Optical isomerism (C) Both geometric and optical isomerism (D) No isomerism (E) It is difficult to determine isomerism since it is

    asked by John
  174. Calculus

    Determine the volume of the solid formed by rotation about the x-axis of the region bounded by the curves y=4^x-1 and y = 21x on the interval 0

    asked by Alex
  175. Internet OSI

    Hi, Can anyone tell me if I have picked the correct TRUE statements .. From the pairs of terms given below, choose the option that offers, in the correct order, the most appropriate pair for the blanks in the following statement. _______DHCP_ is a protocol

    asked by Freddy
  176. Geometry/Trig.

    For acute angle Aof a right triangle, find tan A by using the 45-45-90 Triangle Theorem or the 30-60-90 Triangle Theorem. measure of angle A=45 degrees.

    asked by Chica
  177. management

    Given the following amount of work in seconds required at each station: _____________________ A 38 J 32 X 22 B 34 K 30 Y 18 C 35 L 34 Z 20 a. What is the possibility daily output of this “process” if 8 hours of processing time is available each day?

    asked by Dj
  178. math

    A room is 12 feet by 16 feet. on a scale drawing the 12-foot wall is 4 inches long. how long will the 16-foot wall be?(explain how you got answer)

    asked by Anonymous
  179. Chemistry

    how could the amount of oxygen change the results in the synthesis of Magnesium oxide lab?

    asked by Sadie
  180. math

    what is (-2,1)x - 5 , y + 7

    asked by ebonie
  181. Pre-Calculus-Trig

    A boat travels for 8 kilometers in a straight line from the dock. It is then sighted from a lighthouse which is 6.5 kilometers from the dock. The angle determined by the dock, the lighthouse(vertex), and the boat is 25 degrees. How far is the boat from the

    asked by Chloe Mack
  182. chemistry

    15. How many molecules are in 6H2O?

    asked by jim
  183. COM155

    I think I found all of the errors, what do you think? Identify those with errors by marking each of the errors in bold. Make the correction in parentheses after the error. For those that are correct, write correct at the end of the sentence. Their (There)

    asked by Mark
  184. algebra 1a

    can someone help in solving this and use set builder notations to describe the solution Please 4(8-2x)+2x

    asked by robbie
  185. Geography 7

    Places where two rivers meet is caled what?

    asked by Miley
  186. statistic

    3. In studying the efficiency of the federal court system, we look at the random variable, X, the amount of time elapsing between the filing of a charge and the trial date. A random sample of n = 86 cases yields a sample mean of 11.4 months, with sample

    asked by Tian
  187. math

    The sum of the area of the six congruent circles is 150 pi square centimeters. What is the area of the rectangle? Exact value

    asked by Shaniqua
  188. chemistry

    How do you write a redox reaction in an acidic environment for this? Cu^+2 + I- => CuI + I2 I understand that you get these equations for redox, but how do you put them in an acidic environment when there are no oxygens in the equation? 2I- => I2 + 1

    asked by CHEMISTRY
  189. Chemistry

    What type(s) of isomerism is/are exhibited by potassium dioxalatodiaquachromate(III) dihydrate? (A) Geometric isomerism (B) Optical isomerism (C) Both geometric and optical isomerism (D) No isomerism (E) It is difficult to determine isomerism since it is

    asked by John
  190. Critical Thinking

    What is one important distinction you could not overlook making when critically evaluating the information provided in these materials about the Boston Tea Party? Clarify the improtance of theat distinction.

    asked by S
  191. chemistry

    Do anyone know which of these are covalent or ionic Sodium Chloride Sodium Carbonate Sodium Bicarbonate Potassium Chloride Sucrose Copper(II)Sulfate Corn Starch Corn Oil Rubbing Alcohol

    asked by emmie
  192. algebra 1a

    Help and explain please 9m+n=22 m-3n=18

    asked by robbie
  193. physics

    A box sits at rest at the top of a ramp of length 1.79 m and elevation angle 38.0deg. The box accelerates down the ramp, and when it reaches the bottom its velocity is 4.05 m/s. What is the coefficient of friction μ on the ramp?

    asked by caitlin
  194. Math

    Find the vertex and symmetry of f(x)=-2(x+7)+6 Please help.

    asked by Dawn
  195. Physics

    You serve a tennis ball from a height of 2.29 m above the ground. The ball leaves your racket with a speed of 18.7 m/s at an angle of 6.55° above the horizontal. The horizontal distance from the court's baseline to the net is 11.89 m, and the net is 1.07

    asked by Haley
  196. math

    How do you draw a picture or make a chart to show how to divide 1600 by 4 and give the quotient.

    asked by karenb
  197. algebra

    -2/5 x=6/35 could the answer be - 15/14????? solve using the multiplication principle, so lost to even figure it out

    asked by so lost
  198. physics

    This question was partially answered, if you could just help clarify that would be really great!!! Hi~ Thank you for your help~ Imagine you are on an island and you have two coconuts. The coconuts are launched with the same initial velocity. The trajectory

    asked by APpreciative Student
  199. Finance

    Unit 4 Individual Project Deliverable Length: 2-3 pages Details: A manufacturing company is thinking of launching a new product. The company expects to sell $950,000 of the new product in the first year and $1,500,000 each year thereafter. Direct costs

    asked by Darby
  200. physics

    An experiment was done in which different coloured light were shone onto a water plant separately and the rate of production of oxygen was measured. which coloured light will produce the lowest rate of production of oxygen? explain your answer

    asked by sanya
  201. English

    Hello. I will really appreciate some help with grammar. Which is correct: The new concept is based on 1)resources exchange 2)resource exchange 3)the exchange of resources 4)exchange of resources Thank you for your help.

    asked by Ilma
  202. English help

    I need help paraphrasing the SECOND REASON in David Hume's "Of Miracles." I am having a hard time understanding the reading.

    asked by RaeAnne
  203. chemistry

    If 12.45gm NaCI is dissolved in 115ml of water, what is the density of NaCI?

    asked by Twynna
  204. physics

    Why is the pressure different in different areas of a gas filled chamber.

    asked by Anonymous
  205. accounting

    identify assumptions and concepts and correct entries. The company used the average cost formula to determine that the cost of merchandise inventory at december 31 was $65,000. on December 31, it would have cost $80,000 to replace the merchandise

    asked by Thara
  206. Math

    Solve for x,correct to TWO decimal places 4+5x>6x to the power 2

    asked by Zonke
  207. math

    Michelle runs 400 metersin 1 minute. if she completes in the 100-meter race,about how many seconds will it take her to run the race?(explain how you got your answer)

    asked by Anonymous
  208. chemistry

    A one thousand liter sample of water contains one gram of iron (III) ions. What is the concentration of Fe3+(aq) in parts per million?

    asked by joey
  209. english

    What is the part of speech of can ride and for in the following sentence. Jady can ride his new toy tractor now,for he is of restriction

    asked by tommy
  210. english- to kill a mocking bird

    in the book to kill a mocking bird by harper lee, what did Atticus learn, i have been searching everywhere and cannot find the answer, PLEASE HELP:(

    asked by anon
  211. statistics

    what is the standard error when sample n = 16 mu=150 and sigma = 36

    asked by Jokes
  212. math

    i only need help on these two that's it so please help me(step by step if you could) 1)1.5x-2.5y=8.5 6x+30y=24 2)3x-2y=8 x+3/2y=8 THANKS SO MUCHHHHH!! :))))

    asked by math
  213. Algebra 2/Trig

    We just started logarithms and exponential functions, and I'm kind of getting the gist but not really. Here is what I tried on one of the homework problems: 2^X=4^X+1 1)2^X=(2^2)^X+1 2)x=x+1 3)0=1 or no solutions I wasn't sure what to do between steps 1

    asked by amanda
  214. English

    Will you please help me with a few language problems: 1)is the article necessary in the phrase "representatives of the (?)mass media" ('mass media' goes with the article in the dictionary but is it possible to omit it in the phrase) 2)does the sentence

    asked by Ilma
  215. math

    michelle runs 400 meters in 1 minute. if she competes in the 100 meter race, about how many seconds will it take her to run the race?

    asked by Anonymous
  216. english

    When using new world in a papar which way is correct? New World or new world

    asked by mm
  217. Chemistry - Chemical Kinetics

    1) if the concentrations of trace constituients of the atmosphere are expressed in molecules/cm3 , what would be the units of reaction rate???? i think the ans is molecules/cm3 per seconds since the usual units of reaction rate is mol per dm3 per

    asked by Davia
  218. Math(Please check)

    Find the derivative of f(x)=1/3 sqrt x. The 3 is little above the square root. I know that it is -1/3x^-4/3. Can this be written as -1/3x^4/3 ?

    asked by Hannah
  219. Chemisty

    What is the heat change in J associated with 44 g of solid methanol at -149 oC changing to liquid at -83 oC? c(methanol) (liq) = 2.47 J/(g.K) c(methanol) (s) = 1.85 J/ (g.K) ÄHfus(methanol) = 3.17 kJ/mol The freezing point of methanol is -98 oC

    asked by TaSheanda
  220. 6th grade math

    How did you get c=1/5 when you have 5c=2/3 divided by 2/3?

    asked by Anna
  221. Finance

    Saturated Meat Corporation preferred stock is currently selling for $22 per share. The preferred dividend is $2.50 per share. If Jennifer requires a return of 10% on the preferred stock, should she invest in this stock? You must empirically support your

    asked by Teresa
  222. Math

    If the difference of 135, and 98 is 37, what is the sum of the numbers?

    asked by Lim
  223. College Biology

    The RBC osmolarity of a patient is 300 mOsm/L and is given 1L of distilled water and starts with 3L of plasma. What is the plasma osmolarity after infusion mixes with plasma but before water enters her RBC? Once infused water equilibrated between plasma

    asked by Anonymous
  224. statistics

    For a population that has a standard deviation of 10, figure the standard deviation of the distribution of means for samples of size- (b) 3.

    asked by Anonymous
  225. business

    Research the VISA website. After reviewing of all the documents you can find on the web and in libraries, write a 3-page response to the following questions: 1.What is the most important problem facing VISA? 2.What recommendation(s) would you make to VISA

    asked by Anonymous
  226. math

    The sun rays cast a shadow I am 5ft 9in and I am standing in front of a flagpole what is the height of the flagpole?

    asked by vanessa
  227. Finance

    Cascade Mining ($28Mil Assets) has an estimated beta of 1.6. The company is considering the acquisition of Hanson Welding ($42 Mil assets) that has a beta of 1.2. Cascade last paid a dividend of $1 per share 2010. In 2007, the Cascade paid a dividend of

    asked by Teresa
  228. market

    Tesla, a new firm that makes an electric sports car, estimating how many competitors will make electric vehicles and what kinds they will make, is:

    asked by mike
  229. comm

    User: · Read the four sample paragraphs in Appendix F. · Identify whether each paragraph is a summary, analysis, synthesis, or evaluation. · Write a paragraph explaining the key differences between the four types of writing. 1. Alice Axia’s article

    asked by jenny
  230. english

    wirte a review with at least five adjectives, five adverbs Grey’s Anatomy is a funny, witty, romantic, medical drama. It stars Ellen Pompeo as Meredith grey, a first year surgical intern at Seattle Grace Hospital, which she is guided by a skillful team

    asked by jub
  231. algebra

    y+x=-4

    asked by Lisa
  232. geography

    what is the most importnat natural resource that the midwest and the great plains offer?

    asked by adan
  233. Algebra II

    Solving the formula for the indicated variable. I=prt,for r I need help knowing how to solve this problem step by step. its easier with numbers and a fraction in the problem but this problem just threw me off.......HELP PLEASE!!!!

    asked by Attalah Higgs
  234. English

    Can you please tell me if the following alternatives are all possible? I hope you can have a look at them. 1)The jewish communities were restricted in their (or the) professions they could follow. 2)As Christians were not allowed to lend money at interest,

    asked by Franco
  235. math

    what rule relating time and distance can help me calculate the traveled for 950 miles in bus at 60 miles per hour? d=60-t t=60d t=60+d d=60t which one the answer

    asked by monserrate
  236. Math

    What is the mathematical term for a statement that can be flipped and still remain true? Example: A cat is a feline, and a feline is a cat. AND/OR What is the mathematical term for a statement that becomes false when flipped? Example: A square is a

    asked by Christina
  237. Math

    Alyssa used 8 gal of gasoline to make a 192-mi trip. How much gasoline wl she need to make a 360-mi trip?

    asked by lim
  238. Pre-Algebra

    Cheng drives 25 miles on a highway at a constant rate of 60 miles per hours. Jow much time does the trip take?

    asked by Bob
  239. Math(Please check)

    The value of an automobile was $15,780 in 1994 and depreciated to $5400 in 1999. Let y be the value of the automobile in the year x, where x = 0 represents 1994. Write a linear equation in slope-intercept form that models the value y of the automobile, x

    asked by Hannah
  240. physics

    a satellite can be launched into orbit through use of a specialized cannon that measured 18.0 meters in length. what would the average acceleration through this cannon have to be in order to have a muzzle velocity of 29000 km/h ?

    asked by jafara
  241. English

    I forgot to include the following sentences. These are the last sentences of the day. Thank you. 1) I'd rather stay at home than go to the summer camp. I'd prefer to go today rather than on another day. 2)We are having breakfast and dinner at the hotel. We

    asked by Franco
  242. physics

    wo fan carts with different fan speeds and different accelerations are started from rest some distance from one another. Cart A begins at position 0 with a velocity of zero and an acceleration of aA to the right. Cart B begins at position xB with a

    asked by Kelli
  243. algebra

    how do u solve an equation using the the graphing method...for example x-y=2 and -2x=2y=2

    asked by help please..thanks :)
  244. algebra

    use substitution method/linear combinations to solve then tell how many solutions they have -7x+7y=7 and 2x-2y=-18

    asked by anna
  245. English

    I forgot to include the following statements. I really hope you can check them, too 1) The Druids were the Priests, Priestesses and Magicians of the Celtic people. They administered religion, justice and education. 2) The word “Druidae” is of Celtic

    asked by Franco
  246. IT

    Hi, Can anyone tell me if I have picked the correct TRUE statements .. From the pairs of terms given below, choose the option that offers, in the correct order, the most appropriate pair for the blanks in the following statement. _______DHCP_ is a protocol

    asked by Freddy
  247. financial matters

    Hello I was searching on variable cost, but i could not find nothing that defines How are variable costs handled? can someone one please explained to me how variable costs are handled? thanks a bunch:)

    asked by kiki83
  248. World History

    What series of events led to the March Revolution and Czar Nicholas II to abdicate his thrown?

    asked by Logan
  249. Managerial Finance

    Assume that investors have recently become more risk averse, so the market risk premium has increased. Also, assume that the risk-free rate and expected inflation have not changed. Which of the following is most likely to occur? A. The required rate of

    asked by Alex
  250. math

    Chloe used 30 toothpicks as edges to make a model for a prism. How many sides did the base of her prism have? How many vertices?

    asked by joe
  251. English Comp. 2

    How do i write a rough on a paper my topic is many people appear obsessed with exercise ( diet).

    asked by Felicia
  252. UNC

    What is an example of "statistical abuse" in the media in january 2011. What are some of the commonly reported health or nursing statistics? Do they accurately portray the statistical data to your satisfaction?

    asked by Taylor
  253. trig

    Given that sin x = - ã2/2 and that cos x is negative, find the other functions of x and the value of x. can you explain how this problem can be solved please.

    asked by Anonymous
  254. Spanish

    What does this mean? Como la madre sabía de donde venía lo que traía Zayde

    asked by Amy
  255. Chemistry

    Which of the following does/do not follow the IUPAC naming convention and/or spelled wrongly? (A) Bis(ethylenediamine)sulfatoiron(II) (B) Sodium hexanitritocobaltate(III) (C) Pentaammineazidocobalt(III) sulfate (D) A, B and C do not have any problems in

    asked by John
  256. us history

    Analyze and compare the evolution of the "North /East, the "West and in antebellum American from 1800-1865. Be prepared to evaluate various developments within and ideologies supported by each region, policies proposedby the leaders of each regio and what

    asked by Anonymous
  257. College algebra

    x+5 + x-3 = 5 --- --- --- 7 4 14

    asked by jenny
  258. Math PLEASEE

    Factoring. x to the seccond powor -4

    asked by studybuddyyy
  259. economics

    Trucking giant Yellow Corp agreed to purchase rival Roadway for $ 133.67 million in order to reduce so-called back-office costs (e.g., payroll and insurance) by $22.65 million per year. If the savings were realized as planned, what would be the annual rate

    asked by Roo Kun
  260. Manufacturing

    Discuss how it is possible that schools put up barriers to enrolling a child with emotional disabilities

    asked by Tom
  261. American Government

    Where can the President establish his office?

    asked by Anonymous
  262. American History

    How have the commemorations of Columbus’s voyage changed over the centuries, from 1792, to 1892, and 1992? What accounts for the different emphases of these anniversaries?

    asked by Anonymous
  263. science

    which chromosome is breast cancer located on?

    asked by Rachael
  264. physics

    Modern lasers can create a pulse of light that lasts only a few femtoseconds. (a) What is the length of a pulse of red light that lasts 6.2 fs? (b) How many wavelengths of red light (ë = 680 nm) are included in such a pulse?

    asked by jack
  265. physics

    Modern lasers can create a pulse of light that lasts only a few femtoseconds. (a) What is the length of a pulse of red light that lasts 6.2 fs? (b) How many wavelengths of red light (ë = 680 nm) are included in such a pulse?

    asked by jack
  266. Opinion Question

    What constitutes a miracle? (In your oppinion) I have to write a paper on this and needed some ideas.

    asked by Amanda
  267. AP Physics B

    What's the equation to find the maximum height after a spring decompresses?

    asked by Flower
  268. algebra

    Solve for n: 5to the second power n + 1= 1/25 express answer as a common fraction.

    asked by sal
  269. sci/100

    What does it mean when a physician is Board Certified?

    asked by bobbi
  270. science:Biology

    how can you identify the following living organisms using key bird,goat,dog,lizard,fish

    asked by erica Arshley Muroka
  271. Spanish

    39. Nosotros ______ practicar los verbos en español. a. deben b. debe c. debo d. debemos A or B? Thanks -MC

    asked by mysterychicken
  272. Chemistry

    Which of the following is(are) true for an exothermic reaction? [H = enthalpy] A) ƒ´H¢X > 0 B) ƒ´H¢X < 0 C) Hreactants > Hproducts D) Hreactants < Hproducts E) Hreactants = ƒ´H¢X The square means delta.

    asked by Joseph
  273. math

    i have no parallel sides. my adjacent sides are equal. my diagonals intersect at right angles. what am i?

    asked by elysia
  274. Physics

    You're on planet YZ and an astronaut observes that a 1.0 m long pendulum has a period of 1.50s. What is the free-fall accerlerttion on YZ? Answers: 1.003 m/s^2 26.4 m/s^2 17.6 m/s^2 0.23 m/s^2 Could someone direct me how to set this up or give me any

    asked by Ray Scholz
  275. geography

    How was the Canadian Shield formed? Thanks

    asked by I NEED HELP NOW!!:)
  276. geography

    what are water borne diseases? Thanks

    asked by I NEED HELP NOW!!:)
  277. English

    Do i need a comma? Do you still have relatives living there Kate?

    asked by Sally
  278. Social Studies

    What were the three main problems that the farmers experienced while creating the U.S. Constitution?

    asked by Sumaiya
  279. English

    I need a poem on If I were in charge of the world.

    asked by Adraian
  280. Accounting-Journal Entry

    Cypress purchased a 50,000-hectare tract of timber land at Westerlund on June 7,2010, for $50 million, paying $10 million cash and signing a % mortgage payable for the balance. Principal payments of $8 million and the annual interest on the mortgage are

    asked by Thara
  281. Science/Math

    When is the Centigrade temperature third the Fahrenheit temperature? When the Fahrenheit temperature is???

    asked by Mel
  282. world history

    Describe the spread of sedentary agriculture outside the older civilized areas.

    asked by Jenova
  283. English

    Hello. Please tell me if the sentences sound normal English: 1)Political opponents finally agreed (meaning:reached agreement)and now they are making a new government. 2)Politics is war without bloodspill. 3)Thousands of Egyptians made a demonstration

    asked by Ilma
  284. chemistry

    Draw the line structure for the compound: 2,5-dimethyl-3-hexane I believe the compound is C8H16...i am not sure!! :(

    asked by annonymous
  285. chemistry

    Draw the line structure for the compound: 2,5-dimethyl-3-hexane I believe the compound is C8H16...i am not sure!! :(

    asked by annonymous
  286. accounting

    identify assumptions and concepts and correct entries. On December 31, SGI Company's fical year end, a 12-month insurance policy for the following year was purchased. The following entry was made: DR. insurance expense $24000 CR. cash $24,000

    asked by Thara
  287. business

    Appendix B Answer each question below. Answers should be approximately 100 words per question. 1. What are the primary roles of media delivering news to the public? 2. What is the significance of immediate news media delivery on culture? 3. What are the

    asked by Anonymous
  288. calculus

    limit as x approaches 3 where f(x)=6x+2 Find a formula for δ such that for any ε > 0, |f (x) - 20| < ε if |x - 3| < δ. (In your answer, use the word "epsilon" instead of the symbol ε.) I have no idea how to do this? Please help!!!

    asked by john
  289. Supply/Math

    The suppliers will supply 3,300 units if the price is $350.00 and 3,800 units if the price becomes $410.00. Then the linear supply equation is p = ? s + ? .

    asked by Melissa
  290. calculus

    limit as x approaches 2 where f(x)=5x-5 Find a δ such that | f (x) - 5 | < 0.01 if | x - 2 | < δ. (Give your answer correct to 4 decimal places.) Need helpp!!! I have no idea how to do it. and nobody that can help!!

    asked by kelly
  291. CIS!!%

    make a flow chart and a hierarchy chart for a small software company that need to calculate there employee pay and rate of pay with OT

    asked by Martin
  292. french

    I need to put it in imparfait or passe compose /nous sommes alles a la fete foraine. C' (etre) magnifique! Mon pere mangeait son diner,quand je. (Rentrer) a la maison.

    asked by de
  293. math

    translate into an algebraic expression 34 multiplied by d I don't understand this

    asked by ruth
  294. Physics

    a 20kg box is pulled across ahorizontal surface with aforce of 100nt. The coefficient of friction is .3 (a) find the acceleration. (b) how far will the box move in 5 sec. (c) What is the velocity at this time?

    asked by bird
  295. english

    Dan has finially become the president of the chess club. what is the part of speech of has, finially, become?

    asked by help please
  296. Chemistry

    Which of the following does/do not follow the IUPAC naming convention and/or spelled wrongly? (A) Bis(ethylenediamine)sulfatoiron(II) (B) Sodium hexanitritocobaltate(III) (C) Pentaammineazidocobalt(III) sulfate (D) A, B and C do not have any problems in

    asked by John
  297. calculus

    Determine the volume of the solid formed by rotation about the y-axis of the region bounded by the curves y=4^x-1 and y = 21x on the interval 0< x

    asked by Jamal
  298. accounting

    Cypress purchased a 50,000-hectare tract of timber land at Westerlund on June 7,2010, for $50 million, paying $10 million cash and signing a % mortgage payable for the balance. Principal payments of $8 million and the annual interest on the mortgage are

    asked by Thara
  299. english

    Please tell me where I could get the summary of "Eyes on the prize, promised land 1967-1968. Its homeork where can I get it. Thanks!

    asked by Aliyah
  300. Advanced Algebra

    Can you please explain to me how I can solve these problems? (3^ square root of3) ^square root of 3 (x^ square root of 2) ^square root of 7 5^(2)(square root of 3) • 5^(4)(square root of 3) x^(3)(pi) / x^(pi)

    asked by Juan
  301. Geometry/Trig.

    Let angle A be and acute angle in a right triangle. Approximate the measure of andgle A to the nearest tenth of a degree. cos A = 0.11

    asked by Chica
  302. Natural science

    Investaigation: can paraffin cause pollution?

    asked by Edwin-lee
  303. Writing EASY BRAINSTORMING

    I need a topic to do my essay on. it can be any topic in the wholoe wide world i want it to be interesting.

    asked by Monica
  304. math

    carol wants to make a model of a prsm whose base has 9 sides. she will use alls of clay for the vertices and straws for the edges. How many balls of clay and straws will she need? how many faces will her prism have?

    asked by fran
  305. physics

    why is pressure different in different areas of a chamber?

    asked by Anonymous
  306. algebra

    how do u graph equations?? it says use the ggraphing method but i don't know how to graph them

    asked by mee