Questions Asked on
September 14, 2014

  1. Algebra

    What inequality represents the verbal expression all real numbers less then 69? My answer is x

    asked by Paula
  2. Math

    What is the answer to page 31 of pre-algebra with pizzazz (what do hair dressers do?) ?

    asked by Hanna
  3. CHEM

    Why is CH 4 nonpolar whereas CH 3 Cl is polar?

    asked by M
  4. Grade 9 Science

    In each situation s below , it seems that a new substance may have been produced. Explain why each situation represents a physical change. a) A tailor makes a new suit out of a piece of fabric. b) A chef makes a salad out of lettuce, tomatoes and

    asked by Sally
  5. Physics

    A race car completes a lap on a 1600 m long track with an average speed of 250 km/h. If the car's average speed on the first half of the track was 225 km/h, what was its average speed on the second half?

    asked by superdude
  6. maths

    A sum of money becomes 8/5 of itself in 5 years at certain rate of simple interest. Find the rate of interest.

    asked by suneetha
  7. Physics

    Two charges lie on the x axis, +3q at the origin, and -2q at x = 5.0 m. The point on the x axis where the electric potential has a zero value (when the value at infinity is also zero) is

    asked by Marilly
  8. Stat

    when you are comparing two sets of data, and one set is strongly skewed and the other is symmetric, which measures of the center and variation should you choose for the comparison?

    asked by jojo
  9. Chemical

    The molar enthalpy of solution for ammonium chloride is 14.8kJ/mol. What is the final temperature observed when 20.0g of ammonium chloride is added to 125mL water at 20.0'C?

    asked by Han
  10. math

    The length of a rectangle is five less than three times its width. Find the dimensions of the rectangle if its area is 782. I get 18.84 x(3x-5)=782. The book says 17 m by 46 m

    asked by chango
  11. College Chemistry

    how many liters of ethanol contain 1.5 kg of ethonal?

    asked by Val
  12. Statics

    A former student of mechanics wishes to weigh himself but has access only to a scale A with capacity limited to 100 lbs and a small 24-lb spring dynamometer B. With the rig shown he discovers that when he exerts a pull on the rope so that B registers 22

    asked by Bryan
  13. Chemistry

    If the edge length of an NaH unit cell is 488pm, what is the length (in picometers) of an Na−H bond? Na−H has face-centered cubic unit cell. Please help

    asked by Joe
  14. engineering mechanics

    the greatest and least resultant of two forces are respectively 17 KN and 5 KN. determine the angle between two force when their resultant is root 144 KN.

    asked by d
  15. economics

    How to calculate item weight of an item

    asked by Lisa
  16. physics

    While riding in a hot air balloon, which is steadily descending at a speed of 1.39 m/s, you accidentally drop your cell phone. (a) After 4.00 s, what is the speed of the cell phone? (b) How far is the cell phone below the balloon after this time? d = m (c)

    asked by Dann
  17. physics

    A square conducting slab with 7 m sides carries a net charge of 89 mu or micro CC. what is the electric field?

    asked by jasmine
  18. Science

    What is the cell structure involved in photosynthesis and respiration? What is the starting materials and raw materials of photosynthesis and respiration? What is the end product of photosynthesis and respiration? What is the energy requirement of

    asked by ANON :)
  19. Pre-Calculus

    Two polynomials P and D are given. Use either synthetic or long division to divide P(x) by D(x),and express the quotient P(x)/D(x) in the form P(x)D(x) = Q(x)+ R(x)D(x) . P(x) = 6x4 − 3x3 + 29x2, D(x) = 3x2 + 13

    asked by Jose
  20. Physics

    An airplane flies 220 km due east, makes a right-angle, and then flies 400 km due north. Find the magnitude of the plane's displacement from it's starting point. Neglect the culrvature of the earth

    asked by Jose
  21. physics

    While riding in a hot air balloon, which is steadily descending at a speed of 1.39 m/s, you accidentally drop your cell phone. (a) After 4.00 s, what is the speed of the cell phone? (b) How far is the cell phone below the balloon after this time? d = m (c)

    asked by Anonymous
  22. chemistry

    By what factor does the fraction of collisions with energy equal to or greater than activation energy at 100 kJ/mol. change if the temperature increases from 32 degrees celsius to 63 degrees celsius. Give your answer in SCIENTIFIC NOTATION

    asked by LENNON
  23. Geometry

    If you like to snow ski, then you will like Colorado. If you like to wakeboard, then you will like Florida.

    asked by Marcia
  24. physics

    It has been suggested, and not facetiously, that life might have originated on Mars and been carried to Earth when a meteor hit Mars and blasted pieces of rock (perhaps containing primitive life) free of the surface. Astronomers know that many Martian

    asked by Anonymous
  25. World History (Ms. Sue)

    Explain how the qualities of a "Renaissance man" reflected the political and social values of the Renaissance. A: ?

    asked by Victoria
  26. World History Answer Check (Ms. Sue)

    Why does Aristotle believe that man is meant for political association? A: Aristotle believes that man is meant for political association because he possesses a perception of good and evil, of the just and unjust, and of other similarities qualities.

    asked by Victoria
  27. Work History Answer Check (Ms. Sue)

    According to Aristotle, what makes the rich and downtrodden poor rulers? A: According to Aristotle, the rich and downtrodden would make poor rulers because they would be greedy and selfish and treat each other unfairly due to pride or rascality.

    asked by Victoria
  28. World History Answer Check (Ms. Sue)

    What sources inspired the Renaissance thinkers? A: Renaissance thinkers were inspired by a new vision of the world and the value of the individual. The Renaissance thinkers found glory in the idea that the individual had gifts that were almost divine. They

    asked by Victoria
  29. physics

    A speeder passes a parked police car at a constant speed of 25.8 m/s. At that instant, the police car starts from rest with a uniform acceleration of 2.68 m/s^2. How much time passes before the speeder is overtaken by the police car? Answer in units of s

    asked by Mar
  30. Quick math help

    An angle with a measure of 89.9 degrees... Would it be a right or an acute angle?

    asked by Anonymous
  31. Stat

    1) one indicator of a outlier is that an observation is more than 2.5 standard deviations from the mean. Consider the data value 80. (a) if a data set has mean 70 and standard deviation 5, is 80 a suspect outlier? be sure to work that explains your answer

    asked by jojo
  32. World History (Ms. Sue)

    Explain how the Quran influenced the government in Islamic civilization. A: ?

    asked by Victoria
  33. algebra

    A model rocket is launched upward with an initial velocity of 200 feet per second. The height, in feet, of the rocket t seconds after the launch is given by h = −16t2 + 200t. How many seconds after the launch will the rocket be 380 feet above the ground?

    asked by Nate
  34. chemistry

    According to Boyle, pressure and volume of a confined gas are ____ proportional, and according to Charles, the volume of a gas at a constant pressure is____ proportional to its Kelvin temperature. A. directly; inversely B. directly; not C. inversely;

    asked by Emiko
  35. math

    how could you rewrite the expression (3+5)+8 using the Associative property of addition

    asked by jeremiah
  36. Physics

    A dart is thrown horizontally with an initial speed of 14 m/s toward point P, the bull's-eye on a dart board. It hits at point Q on the rim, vertically below P, 0.19 s later. (a) What is the distance PQ? (b) How far away from the dart board is the dart

    asked by AJ
  37. World History Answer Check (Ms.

    Why does Plato believe that philosophers would make the best rulers? What men would make poor ruler? A: Plato believe that philosophers would make the best rulers because, according to Plato, they have knowledge of truth that others do not and only they

    asked by Victoria
  38. dynamics

    a 200 g object is attached to a 1.5 m long string is whirled around a horizontal force at a speed of 6 m/s. determine the centripetal acceleration of the object.

    asked by yel
  39. Physics

    Two rubber bands pulling on an object cause it to accelerate at 1.6 m/s2. (a) What will be the object's acceleration if it is pulled by six rubber bands? (b) What will be the acceleration of six of these objects glued together if they are pulled by two

    asked by Mia
  40. Physics

    I have tried this question over and over and not sure if the answer is 16 west or 190 south west please help. Airplane One flies due east at 250 km/h relative to the ground. At the same time, Airplane Two flies 325 km/h, 35° north of east relative to the

    asked by Sara
  41. english

    what is the thesis of this essay called "i want a wife" -judy brady 1- I belong to that classification of people known as wives. I am A Wife. And, not altogether incidentally, I am a mother. 2- Not too long ago a male friend of mine appeared on the scene

    asked by tina
  42. World History Answer Check (Ms. Sue)

    What group do Aristotle and Plato agree would make poor rulers? Why? A: Both authors agree that the rich would make poor rulers because, given that most lacked good and happiness in their lives, the wealthy would most likely set about fighting for power,

    asked by Victoria
  43. English

    I need help identifying the thesis in this essay. please help! "Why i want a Wife" -Judy Brady 1- I belong to that classification of people known as wives. I am A Wife. And, not altogether incidentally, I am a mother. 2- Not too long ago a male friend of

    asked by Tina
  44. chemistry

    For the decompostion of gaseous dinitrogen pentaoxide, 2N2O5(g)--->4NO2(g) +O2(g) . The rate constant is k=2.8 x 10^-3 at 60 degrees C. The initial concentration of N2O5 is 2.45 mol/L. What is (N2o5) after 5.00 min? What fraction of the N2o5 has decomposed

    asked by sabrina
  45. Maths

    A boy is flying a kite on a string 33m long. The string which is being held at 1.5m above the ground, makes an angle of 39* with the horizontal. How high is the kite above the ground (nearest cm)

    asked by Ryan
  46. World History Answer Check (Ms.Sue)

    How did King Henry II's goal to become more powerful affect the development of law? A: Henry's goal to become more powerful affected the development of law as it ultimately expanded the power of royal courts. Since royal courts were now found throughout

    asked by Victoria
  47. Curriclum

    Which of the following is not a good approach to teaching health, nutrition, and safety for preschool children? A. Explain that children should be more conscious of health, safety, and nutrition than their teachers. B. Incorporate health, safety, and

    asked by Daniela
  48. Physics

    Calculate the energy needed to accelerate a spaceship of mass 10,000 kg to a speed of 0.3c for intergalactic space exploration. Compare with the projected energy usage of the Earth in a decade 10^22J?

    asked by Derick
  49. Math

    A box with an open top is to be constructed by cutting a-inch squares from the corners of a rectangular sheet of tin whose length is twice its width. What size sheet will produce a box having a volume of 32 in^3, when a = 2? width in length in

    asked by Isaiah
  50. Physics

    Two men are carrying a girl on a large plank that is 10m long and weights 200N. If the girl on a plank weighs 445N and sits 3m from one end, how much weight must each man support?

    asked by Clangclang
  51. accounting

    Swan Creek Company has 40,000 shares of cumulative preferred 2% stock, $60 par and 50,000 shares of $50 par common stock. The following amounts were distributed as dividends:year 1 30000 my answer was 18000 common stock

    asked by valerie
  52. Physics

    A 47.0-g Super Ball traveling at 29.5 m/s bounces off a brick wall and rebounds at 15.5 m/s. A high-speed camera records this event. If the ball is in contact with the wall for 5.00 ms, what is the magnitude of the average acceleration of the ball during

    asked by Anonymous
  53. Science

    Help me unscramble the words acnsrl spgei

    asked by Larry
  54. Math

    An exam consists of six true-or-false questions. Assuming that every question is answered, in how many different ways can a student complete the exam? In how many ways may the exam be completed if a penalty is imposed for each incorrect answer, so that a

    asked by Anonymous
  55. math

    How many gallons of water are needed to raise the level of a swimming pool 75' x 42' four inches above its present level? ( 1 cubic foot= 7 1/2 gallons )

    asked by vincent
  56. Physics

    A driver brings a car traveling at 22m/s to a full stop in 2 seconds. How fast does the car uniformly decelerate?

    asked by Spencer
  57. physics

    To what temperature must you raise a copper wire, originally at 20.0°C, to double its resistance, neglecting any changes in dimensions? (Does this happen in household wiring under ordinary circumstances?)

    asked by Linda
  58. Math

    If a plane has intercepts at 2a, 3a, and 4a along the three Cartesian coordinates where a is the lattice constant of the cubic cell, (i) find the Miller indices of the plane and (ii) find the distance between the neighboring planes parallel to this plane

    asked by Chandu
  59. physics

    A river flows with a uniform velocity v. A person in a motorboat travels 1.11km upstream, at which time she passes a log floating by. Always with the same throttle setting, the boater continues to travel upstream for another 58.8min and then returns

    asked by jack
  60. Physics

    A force of 20N is applied to a mass of 5kg resting on a rough horizontal surface. If the friction force is 5N, what is the acceleration of the mass?

    asked by Jessica
  61. Physics

    How many joules of energy per kilogram of rest mass are needed to bring a spacecraft from rest to a speed of 0.77c?

    asked by Tom
  62. Algebra

    A motorboat left a harbor and traveled to an island at an average rate of 18 knots. The average speed on the return trip was 10 knots. If the total trip took 14.0 hours, how far is the harbor from the island?

    asked by ana
  63. chemistry

    What mass of sulfur has to burn to produce 4.5L SO2 at 300°C and 101 kPa in the following reaction? S(s) + O2(g) -> SO2(g) A. 3.07 g S B. 41.0 g S C. 13.5 g S D. 68.8 g S

    asked by Emiko
  64. math

    In order to pass a physical education class at a university, a student must run 1.0 mi in 12.5 min. After running for 10.0 min (assume constant speed), she still has 510 yd to go. What constant acceleration does she need over the final 510 yd in order to

    asked by Charles
  65. niu

    Show that 100 g of 100°C steam will completely melt 800 g of 0°C ice.

    asked by Sharon
  66. Algebra

    Students were divided into eight teams with nine on each team. Later, the same students were divided into teams with six on each team. How many teams were there then? Explain how.

    asked by Kali G
  67. physics

    We are given an input current Iin=100μA and a linear resistive load represented by the resistor RL . Our resistive load is not regulated for the high current provided by our current source, so we add a resistor RS in parallel to divide the current such

    asked by Amit
  68. English

    The essay is supposed to be on Advertisements, then we have to narrow it. I have narrowed it to TV advertisements on cars. I was thinking of TV advertisements appeal in the following ways: accessibility, image changing and ???. accessibility would be those

    asked by C
  69. English

    What is the tone in When Grizzlies Walked Upright?

    asked by Rachel
  70. CHM

    Calculate the theoretical amounts of 0.1000 M NaOH titrant used to titrate 0.8 and 0.9 g KHP

    asked by Helin
  71. Finance

    suppose the interest rate is 8% APR with monthly compounding. what is the present value of the annuity that pays $100 for every 6 years?

    asked by Myra
  72. Physics

    While entering a freeway, a car accelerates from rest at a rate of 2.3 m/s2 for 12 s.How far does the car travel in those 12 s, in meters?

    asked by Kyle
  73. Physics

    A 47.0-g Super Ball traveling at 29.5 m/s bounces off a brick wall and rebounds at 15.5 m/s. A high-speed camera records this event. If the ball is in contact with the wall for 5.00 ms, what is the magnitude of the average acceleration of the ball during

    asked by Rin
  74. gcu

    Show that 100 g of 100°C steam will completely melt 800 g of 0°C ice.

    asked by Sharon
  75. Science

    An airplane lands with a velocity of 100m.s/1.The maximum rate at which it can slow down is 5,0m.s/2.What is the minimum time needed to come to rest, starting from when it first touches ground?

    asked by Nhlanhla
  76. ccs trigo

    A pilot is flying at a heading of 96° at 225 miles per hour wind is blowing from the south west at a heading of 37° find the ground speed and courses of the plane

    asked by mark
  77. Pre-Calculus

    Find all solutions of the equation and express them in the form a + bi. 36x^2 − 12x + 2 = 0

    asked by Christian
  78. Biology

    A student wishes to prepare 300 mL of 0.25 M sucrose. He puts 25.7 g of sucrose in a beaker and then adds 300 mL of dH2O. The total volume of the solution after the sucrose has been dissolved is 330 mL. a) What did he do wrong when preparing his solution?

    asked by Ki
  79. gcu

    Show that 9300 cal is required to change 15 g of 20° C water to 100° C steam.

    asked by denise
  80. math

    A company has determined that the profit, in dollars, it can expect from the manufacture and sale of tennis racquets is given by P = −0.01x2 + 130x − 180,000. How many racquets should the company manufacture and sell to earn a profit of $174,900

    asked by Alana
  81. 8th grade homework

    Please help me I beg of you! My math teacher is awful and I have no idea how to do my pretest and she's picky about showing my work so it would be helpful if you could explain :) 1.six is subtracted from a number. The result is devided by four. This result

    asked by Anna
  82. Algebra

    The speed of the current in a stream is 4 mi/hr. It takes a canoeist 96 minutes longer to paddle 13 miles upstream than to paddle the same distance downstream. What is the canoeist's rate in still water?

    asked by Ashton
  83. math

    Amy is building a house. The basement floor is at -15 feet . The roof of the house is above the ground 25 feet . Express the comparison of heights as an inequality . Explain the meaning of the inequality

    asked by kpim
  84. 3 questions--World history

    1. Horizontal lines of latitude that run across the globe are known as parallels meridians hemispheres poles 2. Which projection is most useful to sea captains? the Mercator projection the Robinson projection the Winkel Tripel projection a planar

    asked by Anoymous
  85. CHM

    suggest an alternative indicator for the standardization reaction. Explain the rationale behind your choice. Used 10 g of KHP

    asked by Jessica
  86. Chemistry

    An element crystallizes in a body-centered cubic lattice. The edge of the unit cell is 3.13Å , and the density of the crystal is 7.78g/cm3. Calculate the atomic weight of the element. Please help, thanks

    asked by Joe
  87. F.maths

    XYZ are three points on a straight road.A car passes X with a velocity of 5m/s.It travels from X to Y with a constant acceleration of 2m/s^2 and from Y to Z with constant retardation of 3.5m/s^2.find the velocity of the car as it passes Y and find distance

    asked by Kosy
  88. chemistry

    What mass of sulfur has to burn to produce 4.5L SO2 at 300°C and 101 kPa in the following reaction? S(s) + O2(g) -> SO2(g) A. 3.07 g S B. 41.0 g S C. 13.5 g S D. 68.8 g S

    asked by Emiko
  89. Biology

    Describe how you would prepare 90 mL of a 5 mM NaCl solution from a 2 M NaCl stock solution. Describe your actions–exactly what you would do –step-by-step–when preparing this solution. Also show all calculations. Be sure all amounts include units of

    asked by Ki
  90. AP CALC. AB

    1.Locate the discontinuity of the function y=1/(1+sin x) 2.Suppose that f is a continuous function defined for all real numbers x and f(-5)=3 and f(-1)=-2 . If f(x) = 0 for one and only one value of x, then which of the following could be x?

    asked by Lily
  91. history

    Why was there war between the Romans and the Carthaginians? Was it because the Romans were interested in gaining control over the Western Mediterranean?

    asked by Hillary
  92. Pre-Calculus

    Find a polynomial with integer coefficients that satisfies the given conditions. P has degree 2 and zeros 2 + i and 2 − i.

    asked by Drue
  93. phy

    A 2000 kg satellite orbits the earth at a height of 300 km. What is the speed of the satellite and its period? Take , Mass of the earth is kg

    asked by squ
  94. Economics

    Are these questions positive or normative? 1)Too many people smoke. 2)Lung cancer kills millions each year. 3)If government were to increase taxes on cigarettes, people would smoke less.

    asked by CoCo
  95. Physics Need Help

    The pile driver struck the piling with a speed of 20 m/s. At what height did the pile driver hammer have to be lifted for it to fall freely and attain that speed before striking the piling? Show steps please!!!

    asked by Kimberly
  96. Math

    Ok so I need to write a equation for this jasmine paid $25 for 2 binders and 1 pack of pens. The pens cost $5. What equation could I write to find out the price per binder? Could it be 25-5=x

    asked by Cathy
  97. chm

    Calculate the theoretical amounts of 0.1000 M NaOH titrant used to titrate 0.8 and 0.9 g KHP

    asked by guru
  98. Elementry Statistics

    The census figures show that the average income for a family in a rural region is approximately $34,860 per year. A random sample has a mean income of $33,566 per year, with a standard deviation of $1,245. At a sig. level of .0.01 is there enough evidence

    asked by Dre
  99. Physics

    What is the peak current through a 400–W room heater that operates on 120–V AC power?

    asked by Ashton
  100. PLEASE HELP! Math

    I really need help with this one question on my math pretests and I have no idea what to do! The question is: Mandy begins bicycling west at 30 miles per hour at 11:00 am. If Liz leaves from the same point 20 minutes later bicycling west at 36 miles per

    asked by ANNA
  101. chemistry

    What is the molecular mass of potassium hydrogen carbonate (KHCO3)? A. 110g/mol B. 84g/mol C. 68g/mol D. 116g/mol

    asked by Emiko
  102. Chem 1

    If a soft-drink bottle whose volume is 1.70LL is completely filled with water and then frozen to -10∘C, what volume does the ice occupy?

    asked by Vanessa
  103. algebra

    A company has determined that the profit, in dollars, it can expect from the manufacture and sale of tennis racquets is given by P = −0.01x^2 + 130x − 180,000. How many racquets should the company manufacture and sell to earn a profit of $174,900?

    asked by Nate
  104. physics

    2 masses m1 and m2 are connected at ends of in-extensible string that passes over pulley find acceleration and tension in pulley.

    asked by ks
  105. Japan history

    in 1192, Japan began a period of... 1. democratic rule 2. military rule 3. foreign rule 4. violent warfare my choice? 4- violent warfare. please answer quick!

    asked by dddd47906
  106. MATH

    Brenda donates part of her salary to the local childrens hospital each month by having $15 taken out of her monthly paycheck. Write an integer to represent the amount taken out of each paycheck. Find an integer to represent the change in the amount of

    asked by Brandon Savon
  107. chemistry

    Calculate the following quantity: Volume in mL of 21.4 M cobalt(II) chloride solution that must be diluted with water to prepare 17 mL of an 51.5 M solution. Calculate to 0 decimal places and do not include units. Also, do NOT use scientific notation.

    asked by Ocsar
  108. real analysis

    definiton: A set S subsect of real number, sequence {Xn} is called bounded if there is a number M such that |X|≤ M for all x ∈ S prove the sequence (-8+(n/(n+1))) is bounded. my anwser proof: Let Xn = (-8+(n/(n+1))) there exist M in real number such

    asked by Lucy
  109. Physics

    The electric starter in an automobile equipped with a 12 V battery draws a current of 100.00 A when in operation. Suppose it takes the motor 4.00 s to start the engine. What amount of electric energy has been withdrawn from the battery? Answer: (in J)

    asked by Ashton
  110. Physics

    A light–rail commuter train draws 635 A of 640–V DC electricity when accelerating. What is its power consumption rate in kilowatts? (in kW) 406 kW You are correct. How long does it take to reach 30.0 m/s starting from rest if its loaded mass is

    asked by Ashton
  111. Physics

    An airplane with a speed of 85.4 m/s is climbing upward at an angle of 37.6 ° with respect to the horizontal. When the plane's altitude is 520 m, the pilot releases a package. (a) Calculate the distance along the ground, measured from a point directly

    asked by sarah
  112. 8th grade homework

    I could really use some help with this problem because I'm pretty confused on what to do. The formula for the volume of a cone is V=1/3(pi)r^2h where v represents volume, r represents the radius of the base, and h represents the height. What is the height

    asked by Anna
  113. Physics

    A car starts from rest and accelerates at a rate of 1 m/s^2 until it reaches a velocity of 7 m/s. It then travels at a constant velocity for the next 15 seconds. The driver then applies the brake, bringing the car to stop. The brakes provide an

    asked by Ulash
  114. PHYSICS

    Three forces, A,B and C act in the same vertical plane from point O. Force A is 30N and acts horizontally to the left of O. Force B is 40N and acts vertically upwards. Determine force C and the direction in which it acts, if the forces are in equilibrium.

    asked by ANDREW
  115. chemistry

    The temperature of a substance ____ as its heat of fusion is added to melt the substance A. increases B. decreases C. remains constant D. fluctuates from rapid increases and decreases

    asked by Emiko
  116. Pre-Calculus

    Find a polynomial of degree 4 that has a integer coefficients and zeros 1,-1,2 and 1/2 (one half)?

    asked by Andrea
  117. chemistry

    Discuss the difference in lattice enthalpy between NaCl and CsF

    asked by lila
  118. physics

    a boy stands at a distance of 168m from a high wall . he produce a sound and haers after 1 second.calculate the speed f sound in air

    asked by jenny
  119. statistics

    A random sample of 8 male college students was taken and asked to report their shoe size and height in inches

    asked by Shabaka
  120. Chemistry

    Suppose the atomic mass unit had been defined as 1/10 th of the average mass of an atom of phosphorus. What would the atomic mass of Carbon be on this scale. What would Avogadro's number be?

    asked by Praphul
  121. physic

    Predict the horizontal distance a cannon on a 15 m cliff will shoot if it's initial velocity is 140 m/s and it's inclined at 15 degrees.

    asked by jason
  122. chemistry

    The observation for three materials shows: Material A absorbs all the visible light (opaque) Material B is transparent to all the visible light (transparent) Material C absorbs blue light but is transparent to red light. (Blue light has wavelength 0.4 m,

    asked by Chandu
  123. Physics

    An airport tram carries passengers between two terminal buildings 500 m apart. The tram starts from rest and accelerations at 1.5 m/s^2 for 20 m. It then travels at a constant velocity for 450 m. Finally, it slows down for 30 m at an acceleration of 1

    asked by Josh
  124. Math

    A pizza box with a square base is to be made from a rectangular sheet of cardboard by cutting six 1-inch squares from the corners and the middle sections and folding up the sides (see the figure). If the area of the base is to be 144 in^2, what size piece

    asked by Kyle
  125. Science/physics

    I done the problem and was wondering if my answer is right I got 1.87 and then 12.4 degrees above x axis please help At time t = 0 s, a puck is sliding on a horizontal table with a velocity 4.60 m/s, 32.0° above the +x axis. As the puck slides, a constant

    asked by Kate
  126. statistics

    You have just completed a round trip to New York and back by car. The one way distance traveled is 210 miles. If your average speed traveling to New York was 70 miles per hour and your average speed returning to Baltimore was 50 miles per hour (heavy

    asked by Anonymous
  127. Geometry

    If you live in Australia ,then you have been surfing. Is it a true conditional statement?

    asked by Anonymous
  128. math

    you are ordering pizza for a party. One pizza serves 8 people. You are expect that there be 35 people. How many pizzas should you order.

    asked by miranda
  129. English

    1. Riding a bike is great fun. 2. It is great fun to ride a bike. 3. It is great fun riding a bike. ------------- Are they all the same in meaning and grammatical?

    asked by rfvv
  130. Physics - Grade 10

    Grant stands 3 meters from the check out at the grocery store holding a 20N bag of potatoes for 10 minutes. How much work does he perform?

    asked by Chloe
  131. PHYSIC

    If a spring gun shoots a ball horizontally at 8 m/s, and the ball starts out 1.7 m above the floor, how far away from the gun will the ball land?

    asked by jho
  132. chemistry

    2 HI(g)-->

    asked by Anonymous
  133. Chemistry Urgent Help Please!

    If caffeine is soluble in hot benzene but insoluble in hot petroleum ether, how could you use this information to design a crystallization procedure?

    asked by Anonymous
  134. Physics

    Calculate the energy needed to accelerate a spaceship of mass 10,000 kg to a speed of 0.3c for intergalactic space exploration. Compare with the projected energy usage of the Earth in a decade~10^22J? well i don't know how to start the problem

    asked by Paul
  135. Statistics

    12 cards are drawn with replacement from an ordinary deck of 52 cards. What is the probability that 4 queens of hearts, 4 aces of spades, and 4 kings of clubs are drawn?

    asked by Connor
  136. Pre-Calculus

    Factor the polynomial completely, and find all its zeros. State the multiplicity of each zero P(x)= x^3-x^2+x

    asked by Adrian
  137. math

    after how many complete rotations will a bicycle wheel with a diameter of 65cm cover a distance of 2km

    asked by lerato
  138. Physics

    The Tevatron accelerator at the Fermi National Accelerator Laboratory (Fermilab) outside Chicago boosts protons to 1TeV (1000GeV) in five stages (the numbers given in parentheses represent the total kinetic energy at the end of each stage):Cockcroft-Walton

    asked by Derick
  139. Pre-Calculus

    Hello! I wanted to know if my answers are right or not? Thanks! :) 1.) Segments AB and CD have the following endpoints. Determine whether the segments are parallel, perpendicular or neither. A (3, 0), B (-2, 2), C (-1, 4), D (-3, -1) My answer: Parallel

    asked by Abby
  140. physics

    A train is moving parallel and adjacent to a highway with a constant speed of 24 m/s. Initially a car is 48 m behind the train, traveling in the same direction as the train at 35 m/s and accelerating at 3 m/s 2 . What is the speed of the car just as it

    asked by Anonymous
  141. Science

    Suppose the atomic mass unit had been defined as 1/10 the average mass of an atom of phosphorus .what would the atomic mass of carbon be on this scale? What would Avogadro's number be ?

    asked by Praphul
  142. Spanish help

    In spanish why are the present-tense verbs for yo complete considered to be stem-changing verbs? 1.Because in some of them, when the e is stressed, it is changed to ie 2.Because in some of them, when the o is stressed, it is changed to we 3. Because in

    asked by Alexander Dennis
  143. Chemistry

    If 64.0 g of H2O are actually obtained, find the actual yield %. Show that the % the same whether you calculate using grams or moles. Theoretical yield is 4.04 moles and in grams is 72.80 grams 2H2 + 1O2=2H2O

    asked by Feather
  144. Math

    In how many arrangements of the letters BERKELEY are all three E's adjacent? I think its (5!)*(6) i'm looking for some clarification.

    asked by Henry
  145. physics

    At a point P, the electric field is 78 N/C at 51° counter-clockwise from the positive x axis. A particle of mass 4.7 kg and charge -0.11 C is located at P. Find the direction of the force on the particle: ___ degrees counter-clockwise from the positive x

    asked by Anonymous
  146. physics

    A train is moving parallel and adjacent to a highway with a constant speed of 24 m/s. Initially a car is 48 m behind the train, traveling in the same direction as the train at 35 m/s and accelerating at 3 m/s ^2 . What is the speed of the car just as it

    asked by Mar
  147. Math 221

    find the probability of the event rolling a number less than 6

    asked by bing
  148. Organic Chem Help

    You use 100 ml ethylchloride (density 0.92 g/ml) to extract 25 ml ethylene bromohydrin (density 2.41 g/ml) mixed with 100 ml. Is the aqueous layer the lower or the upper layer. How could you easily test this. ----- Ethylchloride is less dense so it is the

    asked by Anonymous
  149. Physics

    When I work this problem I get an answer different from what's given not sure why? A basketball is launched with an initial speed of 8.8 m/s and follows the trajectory shown. The ball enters the basket 0.98 s after it is launched. What are the distances x

    asked by Ben
  150. statistics

    AAA reports that the average age of a car on U.S. roads in recent years has risen to 7.5 years. Suppose that the distribution of the age of automobiles assumes a mound shaped distribution. If 99.7% of the ages are between 1 year and 14 years, what is the

    asked by Anonymous
  151. U.S History Honors

    Identify the causes of Progressivism and compare it to Populism

    asked by k
  152. Statistics

    If you have a curve with an asymmetric bimodal distribution, is it considered a normal distribution? Or is it only a normal distribution if there is a single bell-shaped curve?

    asked by CiCi
  153. physics, math

    Part A & B are 0.10m apart. A point charge of +3.0*10^-9C is placed at A and a point charge of +1.0*10^-9C is placed at B. X is a point on the straight line through A and B. If a third charge C or charge 1.5*10^-9 is placed at X, where must X be for the

    asked by joey
  154. Chemistry

    What is 100mL of water + 45.00g of ice?

    asked by TommyJoe
  155. physics

    The resistivity of silver is 1.59 × 10-8 Ω·m. What is the resistance of a section of 12 gauge wire (diameter 0.2057 cm) that is 8.60 m long?

    asked by Linda
  156. math

    Clark is cooking a 12 pound ham. The ham needs to be cook 20 minutes for each pound. Clark wants to serve the ham at 5 p.m. What is the latest time he should place the ham in the oven.

    asked by miranda
  157. math

    The farmer wants to use the 500 m to an enclosure divided into two equal areas, What is the total maximum area that can is achieved with the 500 m fence. using differential calculus to the solution.

    asked by gordana
  158. Statistics

    If P(A/B)=1 must A=B?

    asked by Connor
  159. curriculum

    Of the following, which is the best strategy families can use to support language development at home? A. Make a set of vocabulary flashcards, and use them to drill each other each evening. B. Talk out loud about what they're doing. C. For families

    asked by Daniela
  160. Physics Help

    An industrial die machine is used to stamp out holes in pieces of sheet aluminum. the die strikes the surface of the street of metal at a speed of 10 m/s, passes through the 0.635 cm thick sheet, reverses its direction, and is again moving at 10 m/s as it

    asked by Kimberly
  161. Physics Help Urgent

    On a dare, you decide to try bungee jumping. You fall freely you are moving at 15 m/s downward. At that point the cord begins to stretch. The cord slows you to a stop as it stretches, then pulls you back upwards. When the cord is no longer pulling on you,

    asked by Anonymous
  162. Statistics

    Each day a local radio station randomly draws a date (without replacement) from a bowl containing all the days in the year. The first person who calls in with their birthday on the date drawn gets a prize. what is the probability that none of the birthdays

    asked by George
  163. Physics Help

    A crane is used to lift air conditioning units to the top of a 5-story building. Each story is 3.5 m high. The crane accelerates the units while lifting the units past the first story and then lifts them at a constant velocity past the second through

    asked by Anonymous
  164. physics

    Two cars x and y travelling side by side with a common velocity are subjected to constant retardation of 1/2m/s^2 and 1/6m/s^2 respectively.After passing a point A,car x and y comes to rest 150m before and 300m beyond another point B.Find the common

    asked by Kosy
  165. Algebra

    A manufacturer of tin cans wishes to construct a right circular cylindrical can of height 20 centimeters and capacity 2600 cm^3 (see the figure). Find the inner radius r of the can. (Round your answer to one decimal place.) r = cm

    asked by Emsley
  166. algebra

    Find the standard form for the equation of a circle (x−h)^2+(y−k)^2=r^2 with a diameter that has endpoints (−8,−10) and (5,−4). Find the h= -1.5 k= -7 r=? I do not understand how to find the radius.

    asked by Heather
  167. Accounting

    Dr. Rees: Ruth, good to see you again. Why didn’t you call me when you were in Denver? We could have had dinner together. Dr. Turner: Actually, I never made it to Denver this year. My husband and kids went up to our Vail condo twice, but I got stuck in

    asked by Crystal
  168. Chem !!!!!!!!!!!!!!!!

    a) What properties are important for a solvent to be used to extract a compound from an aqueous solution? b) When carrying out an extraction what are the advantages/disadvantages of having your extraction solution more/less dense than water? Thank you!

    asked by Jay-Jay
  169. Math

    How do you write the transformation of a quadratic function two units right from its parent function? Is it y = (x + 2)^2?

    asked by Anonymous
  170. Math

    A box manufacturer wants to produce an open box for which the volume is 2 cubic meters and the length is twice the width. What actual dimensions of he box will require the least amount of material? Work: V = 2m^3 2m^3 = (w)*(2w)*(h) Possible dimensions:

    asked by Kendra
  171. math

    The length of the shadow of a pole on the level ground increases by 60 meter when one angle of elevation of the sun changes 54° to 32°.calaulate the height of the pole,correct to three significants figures.

    asked by gyabeng
  172. Algebra

    What would the inequality c + 7 less then or equals 3 look like on a graph?

    asked by Faye
  173. Chemistry Urgent Help Please!

    You use 100 ml ethylchloride (density 0.92 g/ml) to extract 25 ml ethylene bromohydrin (density 2.41 g/ml) mixed with 100 ml. Is the aqueous layer the lower or the upper layer. How could you easily test this. You dissolve sodium chloride 40g. in the above

    asked by Anonymous
  174. statistics

    Air travel is probably not as fun as it used to be. Airlines have increased fares, reduced seat size, and now charge fees for everything from luggage to early boarding. Airlines can be fined by the federal transportation agencies for various "infractions".

    asked by Lupe
  175. Pre-Calculus

    Find all zeros of the polynomial P(x)=x^3-x-6

    asked by Christian
  176. math

    Determine the rule when gradient =2,x intercept =3 .can. anyone please explain,cause I know y intercept =c,but I don't know x intercept,thanks

    asked by wa
  177. information literacy

    .Why do we need information? What sources do you already use to obtain personal information

    asked by jill
  178. physics

    Two cars A & B are coming closer to one another with speed 36 km/h and 72 km/h Separated by a distance 1500 m calculate : 1 . time interval after which two car meet . 2 . if acceleration of car A is 2m/s2 then calculate time interval after which car A & B

    asked by Anonymous
  179. Geometry

    I could really use some help with this problem because I'm pretty confused on what to do. The formula for the volume of a cone is V=1/3(pi)r^2h where v represents volume, r represents the radius of the base, and h represents the height. What is the height

    asked by Anna
  180. PHYSIC

    what is the horizontal distance a slingshot on a 25 m cliff will shoot if it's initial velocity is 240 m/s and it's inclined at 45 degrees y = 25 + 9.8/(240cos45)^2) x^2 ? ^^would this be the right formula?

    asked by Chris
  181. Chemistry Urgent Help and Check Please!

    a) You use 100 ml ethylchloride (density 0.92 g/ml) to extract 25 ml ethylene bromohydrin (density 2.41 g/ml) mixed with 100 ml. Is the aqueous layer the lower or the upper layer. How could you easily test this. ----- Ethylchloride is less dense so it is

    asked by Anonymous
  182. Math

    12 cards are drawn with replacement from an ordinary deck of 52 cards. What is the probability that 4 queens of hearts, 4 aces of spades, and 4 kings of clubs are drawn?

    asked by Kevin
  183. math

    (12^5)^3 = 12 ( I have to find the exponent) my answer is 15 for the exponent

    asked by Anonymous
  184. Biology

    Discribe in details how archaeopteryz sp.was fossilized?

    asked by Omega
  185. Pre-Calculus

    Two polynomials P and D are given. Use either synthetic or long division to divide P(x) by D(x),and express the quotient P(x)/D(x) in the form P(x)D(x) = Q(x)+ R(x)D(x) . P(x) = 6x^4 − 3x^3 + 29x^2, D(x) = 3x^2 + 13

    asked by Jose
  186. Physics

    At a point P, the electric field is 78 N/C at 51° counter-clockwise from the positive x axis. A particle of mass 4.7 kg and charge -0.11 C is located at P. Find: 1.the magnitude of the force on the particle 2.the direction of the force on the particle:

    asked by RW
  187. algebra

    Find the domain and range of: F(x)=sqrt(x)+16

    asked by Rachel
  188. Pre-Calculus

    Find all the rational zeros of the polynomial, and then find the irrational zeros P(x)= 2x^4+15x^3+31x^2+20x+4

    asked by Drue
  189. Physics 11U

    can a initial velocity from the average acceleration formula (Aav=Vf-Vf/t) be negative?

    asked by hi! help me.
  190. Interest

    Mariah purchased a room air conditioner for $450 and made a a down payment of $45 and financed the rest over 14 months. If the monthly payment was $30.28, what was the interest?

    asked by Leslie
  191. Pre-Calculus

    Find all solutions of the equation and express them in the form a+bi 2x^2+3=2x

    asked by Jake
  192. chemistry

    How many grams of Cu (s) are needed to form 6.00g Ag from a solution of AgNO3? The reaction is Cu (s)+2Ag^+(ag)--> Cu^2+(aq)+2Ag (s) the molar masses are: Ag=107.868 and Cu=63.546g

    asked by darya
  193. chemistry

    If it costs $3.92 for a gallon of gas, and I fill up with 13.5 gallons once each 1.5 weeks, how much am I spending on gas in a 5 week month?

    asked by treasa
  194. COMPUTER SCIENCE

    Which of the following is a type of software program used to write code and develop other programs. A: a command line interpreter B: the turtle graphics window C: an operating system D: an integrated development environment Please help asap!

    asked by Ash
  195. Math

    Find the equation of the graph of all points such that the difference of their distances from (10,0) and (2,0) is always 1.

    asked by Tsunayoshi
  196. statistics

    You have just completed a round trip to New York and back by car. The one way distance traveled is 210 miles. If your average speed traveling to New York was 70 miles per hour and your average speed returning to Baltimore was 50 miles per hour (heavy

    asked by Anonymous
  197. Maths

    How would you convert 11 minutes into hours?

    asked by Julia
  198. French

    I am not sure that I have the correct answers to these questions, I have been looking at this for ages. I have typed the paragraph and will put the questions underneath (I have done some of the other questions myself but these two I am struggling with)

    asked by Nix66
  199. Math

    6m by 5m by 4m , rectangular tank How do you know which one is the height?

    asked by Ana
  200. Pre-Calculus

    I'm kind of stuck on how to do this. Can someone help me? Thanks! Write the equation of the line with slope -2 that passes through the point (-1, -3) in slope-intercept form.

    asked by Robert
  201. DESIGN THINKING

    how does Gordan Murray regard regulations

    asked by NUNION
  202. physics

    A rocket is fired at a speed of 75.0 m/s from ground level, at an angle of 57.3° above the horizontal. The rocket is fired toward an 11.0 m high wall, which is located 21.5 m away. By how much does the rocket clear the top of the wall?

    asked by max
  203. math

    Evaluate x5-13 if x =-2

    asked by ugly erica
  204. Math

    Use distributive property and simplify the expression. 4 + 2(3x - 1) + 9 - 6x + 15 - 5x + 14 - 3x + 14 - 6x + 11 *my answer* I wanna make sure my answer is right. 3.82e+7 (there is no multiple choice) my answer is 38200000

    asked by Anonymous
  205. Limits

    Lim of [1/(3+x)]-(1/3)/x as x approaches 0 is?

    asked by Tracy
  206. PHI 208 Week 3 Readings Quiz

    Which one of these is not a principle that can be drawn from the Categorical Imperative? Act as if the maxim of your action were to become by your will a universal law. Act that you use humanity, whether in your own person or in the person of another,

    asked by Eric
  207. Pre-Calculus

    Find all the real zeros of the polynomial. Use the quadratic formula if necessary. 4x^3 − 10x^2 + 9

    asked by Jessica
  208. Chem !!!!!!!!!!!!!!!!

    Write an equation describing the velocity at any time for an object given an initial velocity of Vo in the positive direction which is acted by an acceleration in the negative direction. Write an equation describing the position at any time for an object

    asked by Ulash
  209. history pt 2

    the second part of my question was what did both the romans and the carthaginians want during war?

    asked by Hillary
  210. Math

    Use the quadratic formula to solve the equation for x in terms of y and y in terms of x. (Enter your answers as a comma-separated list. If there is no solution, enter NO SOLUTION.) 2x^2 + 7xy + 1 − y^2 = 0 (a) x in terms of y x = (b) y in terms of x y =

    asked by Liam
  211. algebra

    Find the center and radius of the circle whose equation is 5x^2−6x+5y^2+8y−9=0.

    asked by Rachel
  212. history

    What are two types of slaves in roman society?

    asked by Hillary
  213. English

    Would just in this sentence be considered and adverb? Now when they were first made, the bears were covered with hair and had sharp claws. Would this be an example of adverb modifying a verb

    asked by Rachel
  214. Physics Help

    On a dare, you decide to try bungee jumping. You fall freely you are moving at 15 m/s downward. At that point the cord begins to stretch. The cord slows you to a stop as it stretches, then pulls you back upwards. When the cord is no longer pulling on you,

    asked by Anonymous
  215. Physics Help Urgent

    A ball is thrown straight up into the air with a velocity of 12 m/s. Draw a motion diagram for the ball and then give as much quantities information as you can about the motion. I know you guys can draw anything on this platform. But can you lead me to

    asked by Tanya
  216. Chem !!!!!!!!!!!!!!!!

    All I know is that the colored impurities are soluble in water as sodium salts. so what type of compound does this suggest these impurities are?

    asked by Jay-Jay
  217. alg 2

    solve the inequality y

    asked by nino
  218. Chem help

    What properties would you look for in a solvent to do the crude caffeine crystallization?

    asked by Nida
  219. algebra

    (z − 1)^2 + 4 = 0

    asked by Nate
  220. algebra

    x2 = −x + 1

    asked by Nate
  221. Pre-Calculus

    Find all rational zeros of the polynomial, and write the polynomial in factored form? P(x)= 2x^3-3x^2-2x+3

    asked by Monica
  222. AP Calculus

    Find an equation of all tangent lines for the curve x^2-xy+y^2=16 x=-2 2x-(xy'+y(1))+2yy'=0 2x-xy'+y+2yy'=0 y'(-x+2y)=-2x-y y'=-2x-y/-x+2y y'=-2(0)-y/-(0)+2y y'=-y/2y Not sure what to do now?

    asked by Selena
  223. Math

    3^2x-3^x-24=0 Could you also teach me the process in answering it?

    asked by Hafiz
  224. trig

    proof that (m+n)^2/3+(m-n)^2/3=2a^2/3

    asked by mridul
  225. Pharmacy Calculations

    6. A doctor writes a prescription for 20 mg of Tobramycin antibiotic saline solution. The solution is to be injected intravenously one time a day. On hand we have a 30 mg/2 ml vial of Tobramycin.

    asked by Jenise
  226. math

    A point,X ,is 25 feet from the center of a circle.If the diameter of the circle is 14 feet,what is the length (in feet)of a tangent from point X to the circle? a. square root 29 b. 18 c. 15 square root 2 d. 24 e. square root 673 please answer and explain

    asked by thomas
  227. math

    A rocket ascends at an angle of 60.0˚ with the horizontal. After 1.00 min it is directly over a point that is a horizontal distance of 12.0 km from the launch point. Find the speed of the rocket.

    asked by shivam
  228. math

    Complete the pattern 4,13,22,?, ?

    asked by miranda
  229. math

    Riley wants to raise $2550 for a fundraiser walk. He needs to ask people to pledge money for each mile that he walks. How many people will he need to get pledges from in order to reach his goal.

    asked by miranda
  230. Algebra 1

    How do you write the equation of the line with slope -2 that passes through the point (-1, -3) in slope-intercept form? Thanks to anyone that helps! :)

    asked by Lorri
  231. Math!

    1) What is the value of 19 + 5a^4 + 3b^2 when a = 2 and b = -4? (this is not a multiple choice question) but my answer is 147. 2)Combine the like terms to simplify the expression: 4 + 7xy^2 + 5y^3 + 10x -4xy^2 - 8x - 4y^3 + 9 - y^6 + 3x^2y^2 + 10x + 13 -

    asked by Anonymous
  232. math

    If 4% of motorists on the Turnpike leave at a certain exit and 5% of these go to one particular motel for lodging,out of every 10,000 motorists how many motorists may be expected to go to this motel?

    asked by vincent
  233. Math evaluating expressions with rational numbers

    Liquid nitrogen freezes at -346 degrees F and boils -321 F. Janice gradually heats frozen nitrogen 1 1/2 degrees several times over an hour. 1)Define variables for the number of times Janice increases the temperature and the temperature of the liquid

    asked by Kyra
  234. Algebra 1

    How do you write the equation of the line with slope -2 that passes through the point (-1, -3) in slope-intercept form? Thanks to anyone that helps! :)

    asked by Lorri
  235. English help

    I need help coming up with a personal response to the story "The Stealing Thors Hammer." I don't know how to put it. It must have as comment, interpretation, evaluation etc.

    asked by Anonymous
  236. math

    given the domain of g(x) is (-3,5) and the range of g(x) (-10, 10) find the domain and range of the transformed function 4g(x-7)+12

    asked by kyle
  237. Math

    What is the definition of a multiple

    asked by Jamie
  238. Math

    A Social Security number has seven digits. How many Social Security numbers are possible?

    asked by Anonymous
  239. English

    1. The waterfall is well-known. 2. The fall is well-known. 3. The falls is well-known. 4. The falls are well-known. (Which ones are grammatically correct?)

    asked by rfvv
  240. Maths

    Jenna invest R20000 into saving account.the interest paid in the account is 10%pa compounded mounthly.calculate how (in years) it will take for the saving to reach R80000.

    asked by Promise
  241. trig

    if acos^3x+3acos.sin^2x=m asin3x+3acos^2x.sin=n proof that-(m+n)^2/3+(m-n)^2/3=2a^2/3

    asked by mridul
  242. Math

    7^x-9=4^2x

    asked by Prakash Padukone
  243. Math

    Mrs lim bought apples at a cost of $150 from the wholesaler. If she sells 1 pace of 5 apples at $2.40, what is the least number of apples she must sell in order to make a profit? I am kind of sure I need to use HCF(highest common factor) in this question..

    asked by Ana
  244. Algebra 1

    How do you solve this? Thanks! y+3 = -2(x+1)

    asked by Fiona
  245. math

    Complete the pattern 82,71,60,?,?

    asked by miranda