Questions Asked on
February 10, 2011

  1. Algebra

    Explain three rules of exponents

    asked by Danielle
  2. Math

    evaluate without using a calculator lg(1/10)

    asked by Noah
  3. calculus

    the edge of a cube is increasing at the rate of .05 centimeters per second. in terms of the side of the cube s, what is the rate of change of the volume of the cube, in cm^3/sec

    asked by crystal
  4. Physics

    A particle has an initial horizontal velocity of 1.8 m/s and an initial upward velocity of 4.7 m/s. It is then given a horizontal acceleration of 2.3 m/s2 and a downward acceleration of 1.6 m/s2. What is its speed after 1.9 s? Answer in units of m/s. What

    asked by Catarina
  5. 2nd grade

    How do do the worksheet, guess my rule with two rules. Guess each rule and write it down. Using shapes.

    asked by Help me
  6. 10 grade

    A 80 slug car runs into a wall while moving at 10ft/s. If the car bounces off the wall with the same speed it struck it with as a result of having been in contact with the wall for .8 second, then find... a)... The initial momentum of the car b)... The

    asked by sravya
  7. math

    If E,N,O,T,and W each represent a different integer, can you find more than on solution to this problem?

    asked by christy
  8. math

    If E,N,O,T, and W each represent a diffrent integer, can you find more than one solution to this problem? ONE + ONE = TWO

    asked by christy
  9. Chemistry- Drbob-help#3

    I still need help with #3 I'm not sure how I got 1.14M. I have tried to do the problem over, but I not coming up with my original answer of 1.14M. Somehow I am missing a step. Please show work for the 1.14M Thanks Question#9 reads exactly as written. A

    asked by Paul
  10. Human services management 240

    compare and contrast the types of delivery systems (in social programs)mentioned in chapter 7. What should agencies want in terms of "good" service and benefit delivery?

    asked by cristee
  11. Math

    I am really have a tough time trying to solve this problem. I think my first three steps are correct but I am not sure. Could someone please help me? I got lost somewhere on one of these steps. I thonk it was step 3, 4, 5. Thank you. The two numbers chosen

    asked by Tiffany
  12. Chemistry

    express this mass as a percentage of the weight of your sample of plant food. this is the % of elemental phosphorous in the plant food. I'm not sure what the question is asking for. The mass its referring to is 0.06438g Phosphorus and the weight of the

    asked by Buzz
  13. Chemistry

    A 0.0677g sample of magnesium metal reacted with excess hydrochloric acid to produce 69.9 ml of hydrogen gas. The gas was collected over water at 21.0 degrees Celsius. The levels of water inside and outside the gas collecting tube is identical. The water

    asked by K
  14. math

    the base of a triangle is the same as its height. what are the least whole number measurements for the triangle so that the area would be greater than 144 ft square?

    asked by martin
  15. math

    the base of a triangle is the same as its height. what are the least whole number measurements for the triangle so that the area would be greater than 144 ft square?

    asked by martin
  16. Chemistry

    A 0.188g sample of unknown metal, X (s), produced 71.4 ml of hydrogen gas when reacted with HCL according to the equation: X(s)+2HCL(aq)--->XCl2(aq)+H2(g) The gas was collected over water at 23 degrees Celsius. The levels of water inside and outside the

    asked by K
  17. chemistry

    complete the table a, 355km/s ------cm/s -----m/m b,1228g/L ------g/mL ------kg/ML C,554MK/S ------K/S -------UK/MS D,2.554MG/Ml ------J -------mJ

    asked by ncheta
  18. chemistry

    ok and i had another question: convert the % elemental phosphorus(6.391%) to the % phosphorus present as phosphorous pentoxide (P2O5)

    asked by Buzz
  19. Calc

    The base of a solid is a circle of radius a, and its vertical cross sections are equilateral triangles. The volume of the solid is 10 cubic meters. Find the radius of the circle.

    asked by Erica
  20. math

    according to data from the national safety council, the fatal-accident rate per 100,000 licensed drivers can be approximated by the function f(x)=.0328x^2 - 3.55x + 115, where x is the age of the driver (16< or equal to x < or equal to 88). at what age is

    asked by anonymous
  21. Chemistry

    2 CO (g) + O2 (g) --> 2 CO2 (g) The mechanism below has been proposed for this reaction; (slow) O2 + CO --> CO2 + O (fast) O + CO --> CO2 Based on this mechanism what is the rate law for this reaction?

    asked by John
  22. chemistry

    a 3.11g sample of one of the halogens, Xsubscript2, is shown to react with NaOH to produce 2.00g NaX. the equation is 2NaOH+X subscript 2 yields NaX+NaXO+ water. Assuming that the percent yield of product is 100% identify the halogen.

    asked by callie
  23. chemistry

    CS2+3CO2=2SO2+CO2.HOW MANY OF SULFUR DIOXIDE CAN BE OBTAINED FROM 3.50 MOLES OF CARBON DISULFIDE?

    asked by BOLA
  24. Chemistry

    What is the volume of Tin(Sn)? Mass of sample = 2.588g Initial vol. of water = 31 m/L Final vol. of water = 32 m/L

    asked by Sierra
  25. geometry

    If a triangle has angle measures 15, 120 and 45, and the length of the side between the 15 and 120 angles is 8, what is the area of the triangle?

    asked by Linda
  26. chemistry--help

    a compound contains 63.15% Carbon, 5.30% hydrogen, 31.55% oxygen. Its molar mass is 152.14 g/mol. determine the empirical and molecular formula. I get the empirical formula to be C8H803 is it right because it is not fitting the molecular formula because

    asked by amy
  27. Math

    The number of tickets sold each day for an upcoming performance is given by N(x)=-0.5x^2+12x+13, where x is the number of days since the performance was first announced. When will daily ticket sales peak and how many tickets will be sold that day?

    asked by Tish
  28. Physics

    An uncharged spherical conducting shell surrounds a charge -q at the center of the shell. The charges on the inner and outer surfaces of the shell are respectively... a] -q,-q b]+q, +q c]-q, +q d]+q,0 e]+q, -q 2) A postive point Charge is enclosed in a

    asked by John
  29. chemistry

    what volume and mass of steam at 100 degrees C and 1.00 atm would, during condensation, release the same amount of heat as 100.cm^3 of liquid water during freezing? What do you note, qualitatively, about the relative volumes and masses of steam and liquid

    asked by JAJA HI
  30. Magnetism

    I need to calculate the magnetic field strength at 30 cm distance of a coil with a diameter of 17 cm. Directly at the coil surface I measure 100 Gauss. Please advise.

    asked by Ben
  31. physics

    A motorbike accelerates uniformly at 0.6m.s for 10s. If it covers a distance of 500m. During this time, what was its initial velocity?

    asked by Elton luthuli
  32. AP Chemistry

    I have no idea how to answer this question: A compound effuses through a porous cylinder 3.20 time faster than helium. What is it’s molar mass? Help me please? Give a step by step detail please.

    asked by Ana
  33. soc 120

    Do ethics apply to sex? Or is that something strictly relative to specific cultures or personal context?

    asked by meshelle
  34. algebra

    Solve the equation |x|= 9

    asked by Anonymous
  35. pre-algebra

    what is x? -2x+4=3x-6

    asked by Kai
  36. spelling

    I need a sentence for the for transferring

    asked by Starr
  37. Social Studys

    If the french had won the french and indian war, what might have happened??????????

    asked by Urgent!!
  38. language arts

    hoow does language arts help me become a registered nurse?

    asked by casandra
  39. Clinical Procedures

    On which type of route can a miroorganism travel from one place to another? A. Botulism B. Universal Precaution C. Vector D. Fungi i am torn between A and D. however my answer is A. please help!

    asked by Jessica
  40. math 5th grade

    One morning, 8/9 of the customers at the diner ordered coffee. Regular coffee was ordered three times as much as flavored coffee. What fractional part of the customers orderd flavored coffee? I did it this way 8/9x3/1= 24/9=8/3 It is wrong so please show

    asked by B
  41. math

    How do you make this sign on he computer √

    asked by charles
  42. physics

    An electron and a proton are separated by 2.0 nm. (a) What is the magnitude of the force on the electron? (b) What is the net force on the system?

    asked by Jay
  43. Business Management

    50 lb bags @ $12.50/bag Fixed Costs: $68,000 Variable Costs $.15/lb Annual Interest Expected $7500 A. What is the break-even point in bags? B. C.

    asked by Polly
  44. Clinical Procedures

    Why should a recording in the medical record never be erased or obliterated? A. It makes it harder to read the chart. B. The patient may not receive the proper care. C. It will invalidate the legal value, which would be important in any litigation. D. It's

    asked by Jessica
  45. English

    Can you check these sentences for me please? Thank you. 1) Who were the Druids and what was their role within the Celtic social system? Refer also (or also refer?) to the etymology of their name. 2) When did te bubonic plague strike England and what were

    asked by Franco
  46. Chemistry

    Hey, been trying to work through this but no luck so far: The heat of formation of nitrogen atoms N(g) is 472.7KJ/mol. Is that enough information to determine the N-N bond energy in N2(g)? Is so, what is it in units of KJ/mol? If not, explain why not.

    asked by Tyrell
  47. HCA 220

    posted a soap, teacher asked that i change the s & o. this is what i did: s - patient is here for a non routine checkup, she is 4 months pregnant and is complaining of weakness, fatigue, lack of appetite and lightheadedness. o - HEENT: normal. patient has

    asked by Jackie
  48. chemistry

    If 14.8 kJ of heat is given off when 1.6 g of HCl condesses from vapor to liquid, what is the delta Hcond. for this substance?

    asked by Jazmin
  49. physics

    A transverse wave is traveling with a speed of 500 m/s on a horizontal string. If the tension in the string is increased by a factor of 2, what is the speed of the wave?

    asked by help please
  50. Physics

    A transverse wave is traveling with a speed of 500 m/s on a horizontal string. If the tension in the string is increased by a factor of 2, what is the speed of the wave?

    asked by help please
  51. english

    Find the word that is acting as either a predicate nominative or predicate adjective in the sentence. Then tell which of the two it is. Megan is an intelligent girl.

    asked by Anonymous
  52. Math

    Use Euler’s formula to answer the question. A polyhedron has 12 edges and 6 faces, how many vertices does it have?

    asked by Rena
  53. algebra

    solve the following simultaneous equations 5y=13 x+y/2+30=0 2x-2y=9 2x+2y=9 The first set, I have no idea and the second set I tried but wish to double check.

    asked by Kat
  54. chemistry

    A 1L flask is filled with 1.000atm of H2 and 2.000atm of I2 at 448*C. The following equilibrium is established: H2(g)+I2(g)= 2HI(g). The value of K for this equilibri- um is 50.5. What are equilibrium partial pressures of H2,I2,and HI?

    asked by Victor
  55. com 156

    What aspect of writing an introduction do you anticipate will be a challenge for you? Explain why.

    asked by bonjour
  56. Algerbra 1

    Shane and Kate are preparing to go on long car trips with their families. Shane bought 8 books and 2 CDs for $73.60. Kate bought 3 books and 4 CDs for $69.85. Both totals were withour tax. All of the books were the same price and all of the CDs cost the

    asked by Jessica
  57. physics

    The builders of the pyramids used a long ramp to lift 20000-kg (20-ton) blocks. What is the gravitational potential energy of one of the blocks if it’s now 79 m above the ground?

    asked by olga
  58. physics

    You’re using a wedge to split a log. You are hitting the wedge with a large hammer to drive it into the log. It takes a force of 3500 N to push the wedge into the wood. If the wedge moves 0.2 m into the log, how much work have you done on the wedge?

    asked by olga
  59. physics

    You’re sanding a table. You must exert a force of 23 N on the sandpaper to keep it moving steadily across the table’s surface. You slide the paper back and forth for 23 minutes, during which time you move it 1090 m. How much work have you done?

    asked by olga
  60. physics

    The earth exerts a downward force of 850 N on a veteran astronaut as he works outside the space shuttle. What force (if any) does the astronaut exert on the earth?

    asked by olga
  61. Physics

    A 3kg block is resting on a table with a coefficient of friction of 0.4. It is now pushed with a force of 15n. What is the acceleration of the book?

    asked by Derrick
  62. geometry

    Describe how four 45-45-90 triangles fit together to form a square.

    asked by Anonymous
  63. animals

    What is the location of the Little Blue Penguin?

    asked by liz
  64. 7th grade introduction/conclusion

    I have this stupid extra credit thing due tommorrow about the forest and I need the steps to writing an intro and conclusion because I forgot to bring home my notes??????? So if u could help me out I really appreciate it!!!!??? Thx Sara

    asked by Sara
  65. animals

    How many eggs can a Little Blue Penguin lay? And what are their color features?

    asked by liz
  66. animals

    What is the population of gentoo penguins?

    asked by spencer
  67. calculus

    For the function f(x) = 18/(3x-14) determine the x-coordinate of any vertical asymptote

    asked by maggie
  68. business calculus

    For the function f(x) = 18/(3x-14) determine the x-coordinate of any vertical asymptote

    asked by maggie
  69. chem

    i need help on this question: Equal masses of gaseous N2 and Ar are placed in separate flasks of equal volume at the same temperature. Tell whether each of the following statements is true or false. a) There are more molecules of N2 are present than atoms

    asked by hannah
  70. English

    How can i generally discuss books and World Wide Web in my introduction? I mean i want to focus on books and internet.

    asked by TITI
  71. chemistry

    A ten gallon methane tank contains 1.243 mol of methane at 74°F. Express the volume of tank in liters, the amount of methane in the tank in grams, and the tempature of the tank in kelvin.

    asked by Kalyn
  72. Math

    f(x)=x^3+2x^2-57x+54;k=6

    asked by Anonymous
  73. physics

    An object is lifted from the surface of a spherical planet to an altitude equal to the radius of the planet. As a result, what happens to the mass and wieght of the object?

    asked by Dee
  74. chemistry

    a chemist performs the sunthesis of sodium chloride from its elements. The chemist begins with 46 grams of sodium. How many grams of sodium chloride are produced? 2Na + Cl2 --> 2NaCl

    asked by Joana
  75. Chemistry

    What is the empirical formula of caffeine (C8 H10 N4 O2)? How do I get it? Thanks

    asked by Cad
  76. Chemistry

    A solution contains 3.75g of nonvolatile pure hydrocarbon in 95g acetone. The boiling points of pure acetone and the solution are 55.95C and 56.50C, respectively. The molal boiling point constant of acetone is 1.71 C*kg/mol. What is the molar mass of the

    asked by James
  77. Chemistry

    A 6.0g of methane decomposes into 4.5g of Carbon and 1.5g of Heydrogen. Determine the empirical formula of methane.

    asked by Cecille
  78. physics

    A puck is moving on an air hockey table. Relative to an x, y coordinate system at time t = 0 s, the x components of the puck's initial velocity and acceleration are v0x = +8.3 m/s and ax = +8.8 m/s2. The y components of the puck's initial velocity and

    asked by frost
  79. physics

    A skateboarder shoots off a ramp with a velocity of 7.9 m/s, directed at an angle of 56° above the horizontal. The end of the ramp is 1.3 m above the ground. Let the x axis be parallel to the ground, the +y direction be vertically upward, and take as the

    asked by frost
  80. physics

    A space vehicle is coasting at a constant velocity of 24.7 m/s in the +y direction relative to a space station. The pilot of the vehicle fires a RCS (reaction control system) thruster, which causes it to accelerate at 0.228 m/s2 in the +x direction. After

    asked by frost
  81. Physics

    A charge of uniform volume density (40nC/m^3) fills a cube with 8cm edges. What is the net flux through the surface of the cube?

    asked by John
  82. physics

    A fire hose ejects a stream of water at an angle of 37.9 ° above the horizontal. The water leaves the nozzle with a speed of 25.5 m/s. Assuming that the water behaves like a projectile, how far from a building should the fire hose be located to hit the

    asked by frost
  83. physics

    A major-league pitcher can throw a ball in excess of 44.4 m/s. If a ball is thrown horizontally at this speed, how much will it drop by the time it reaches a catcher who is 17.0 m away from the point of release?

    asked by frost
  84. physics

    A diver runs horizontally with a speed of 0.759 m/s off a platform that is 10.0 m above the water. What is his speed just before striking the water?

    asked by tish
  85. physics

    An airplane with a speed of 94.9 m/s is climbing upward at an angle of 63.2 ° with respect to the horizontal. When the plane's altitude is 743 m, the pilot releases a package. (a) Calculate the distance along the ground, measured from a point directly

    asked by tish
  86. physics

    Suppose that you loft the ball with an initial speed of 15.0 m/s at an angle of 50.0° the horizontal. At this instant your opponent is 10.0 m away from the ball. He begins moving away from you 0.38 s later, hoping to reach the ball and hit it back at the

    asked by tish
  87. physics

    a rifle that has been ‘sighted in' for a 91.4-meter target. If the muzzle speed of the bullet is v0 = 328 m/s, there are the two possible angles è1 and è2 between the rifle barrel and the horizontal such that the bullet will hit the target. One of

    asked by tish
  88. physics

    An airplane is flying with a velocity of 240 m/s at an angle of 30.0° with the horizontal, as the drawing shows. When the altitude of the plane is 2.4 km, a flare is released from the plane. The flare hits the target on the ground. What is the angle è?

    asked by tish
  89. economics

    Question 1. An accurate statement about the Great Depression would be that? A. it was a recession that became a depression because of World War II. B. it was set off because of a sharp and unexpected rise in interest rates. C. it was the most severe

    asked by Lonly
  90. Modern World Studies

    1. What do we call the movement in literature and the arts that emphasized nature and emotion over reason? [x] a. Enlightenment b. Reformation c. Romanticism d. Neoclassicism 2. Who said it is the government’s job to protect the natural rights of life,

    asked by Megan
  91. algebra

    a window is shaped like a rectangle whose perimeter is 294 in. The length is 6 times as long as the width. Find the lengthnand the width.

    asked by shelia
  92. Economics

    Today's supply curve of classrooms on campus is likely to have a price elasticity of: less than one equal to one greater than one Can anyone please assist? Thanks

    asked by Lizette
  93. Social psycology

    Prepare at minimum a 1,400 word paper (no maximum) in which you examine the discipline of social psychology. As a part of your examination, be sure to address the following items: o Define social psychology. o Discuss how social psychology differs from

    asked by cla
  94. Economics

    Today's supply curve of classrooms on campus is likely to have a price elasticity of: less than one equal to one greater than one Can anyone please assist? Thanks

    asked by Lizette
  95. chemistry

    what is the molality of a 10.5% by mass glucose solution?. density of the solution is 1.03g/ml can someone please explain how to do this question. please and thank you

    asked by sam
  96. algebra

    A window is shaped like a rectangle whose perimeter is 294 in. The length is 6 times as long as the width. Find the length and the width

    asked by shelia
  97. algebra

    last year lien earned 1,700 more than her husband. Together they earned 42,100. howm much did each of them earn?

    asked by shelia
  98. Math

    50MB file is compressed using a compression ratio of 10. What is the compressed file size?

    asked by Sue
  99. Chemistry

    sir p2o5+H2o = H2P2O6 why is it H3po4? instead of H2P2O6 please explain me

    asked by Ramesh Reddy
  100. computers

    Can please help me, i'm stuck on thios question:- Q) Select the two true statements from the following list. A)In the OSI model, PDUs at layer 2 are called frames and PDUs at layer 3 are called packets. B)In an IPv4 packet header the Time-to-Live field is

    asked by Sue
  101. physics

    A laden lorry of mass 3000kg travelling due east at 40 m.s -1 collides head on with a large truck of mass 2000kg travelling at 30 m.s -1. the two vehicles combine during the collision. Calculate the velocity with which the two wrecks move after collision.]

    asked by Claudia
  102. physics

    truck A of mass 2,5 x 10(4) kg approaches a second truck B of mass 2 x 10(4) kg with a velocity of 12 m.s -1 and collides with it. After collision the two trucks move apart with equal but opposite momenta. Calculate what the velocity of B was before the

    asked by Claudia
  103. physics

    an aeroplane of mass 8000kg flying at 600km.h-1 fires a projectile of mass 100kg at a speed of 900 km.h-1. Calculate the velocity of the aeroplane after firing if the projectile was fired a)forward b) backward

    asked by Claudia
  104. business calculus

    For the function f(x) = 1/(x2+14x-42) there are two vertical asymptotes. Determine the x-coordinate of each one

    asked by mj
  105. physics

    A cannon on a stationery railway truck fires a shell of mass 5 kg with a velocity of 240 m.s -1. The mass of the cannon is 600kg. The cannon recoils and moves back on the rails and collides with a stationery truck of mass 400 kg. The velocity of the cannon

    asked by Claudia
  106. math

    Stuck on solving this inequality, help please. 3X le 15 and 2x gt -6

    asked by marco
  107. calculus

    Let f(x)= Ax^2 + Bx + C. If f(x) passes through the point (-1,1) and has a relative minimum at (1,-13), find A, B, and C.

    asked by stephanie
  108. CRIMINOLOGY

    Describe one of the psychological or physical traits of the trait theories associated with criminal behavior and provide an example of a recent criminal who exhibits this trait.Might this crime be prevented in future circumstances?

    asked by kathy
  109. Geometry

    if plane angle DAB = (67 + 4x) degrees, than wht is plane angle DAB?

    asked by al
  110. literature

    compare and contrast the structure and literary elements of Abigail Adams' letter to her daughter with Jean de Crevacoeur's essay from "letters from an american farmer."

    asked by ted
  111. Math

    I need help step by step on how to figure how many ways can three cars be parked in a row of four parking spaces?

    asked by Judy
  112. geometry

    Rectangle ABCD is similar to rectangle EFGH. Rectangle ABCD has the following dimensions: segment AB=10 inches; segment BC = 6 inches; segment CD =10 inches; segment AD=6 inches. In rectangle EFGH, segment EF=25 inches.

    asked by Anonymous
  113. Ap Calculus

    Find the equation of the tangent line to the graph of f(x)=cos3xlnx^4 at (1,0)

    asked by Dinorah
  114. algebra

    During the month of february, the depth,d, of snow in inches at the base of one ski resort can be approximated by adding 7 to twice the number of days, t, since Jan. 31.

    asked by jessica
  115. com170

    Write five sentences about the role of education in successful financial planning in the spaces on the following page. Correctly use a different verb tense in each sentence. Highlight each verb in yellow and identify the tense in parentheses.

    asked by joe
  116. english 105

    Why Should one know the difference between prejudice and racism?

    asked by natalie
  117. English

    Can you check if these sentences are OK please? I forgot to include them before. 1) The first three questions are questions on the revision and must be answered by all those students with low marks. 2)The British Museum is such a fantastic place to visit.

    asked by nco
  118. spanish

    Can someone check my work? Read the school rules listed below. In the the blanks write (P)profesor for realistic rules that were most likely written by teachers for their classrooms. Write (E)estudiante for improbable rules that were most likely submitted

    asked by amanda
  119. phoenix

    The library is an excellent sources and option. What are some other public option? examples & explanation.

    asked by alexandra
  120. Math

    The length of a rectangular piece of property if 1 foot more than twice the width. If the perimeter is 302 feet, find the length and width.

    asked by RNRH
  121. american literature

    list three rhetorical devices that patrick Henry uses in his "speech in the virginia convention." Give an example from the speech of each rhetorical device.

    asked by amber
  122. algebera

    the lengthnof a rectangular jewelry box is 3 inches more than twice the width. the perimeter is 30 inches. find the length and the width?

    asked by shelia
  123. math

    I was asked to simplify all variable but are positive real numbers and they have exponents

    asked by Maposo
  124. math 2

    how do i find a scale factor for scale drawings and scale models

    asked by jarrad
  125. Algebra 1

    Quadrilateral ABCD has vertices A(-2,1), B(3,3), C(5,7), and D(0,5). Determine whether line AC is perpendicular to line BD.

    asked by Ryan
  126. College Physics :/

    a ship is traveling due east at 10 km/h. what must be the speed of a second ship heading 30 degrees east of north if it is always due north of the first ship?

    asked by Anonymous
  127. science

    if a force of 50 N stretches a spring 250 mm, what is the spring constant?

    asked by joey
  128. business accounting

    can some one help me with a web-sit for this question. Create a Rewards and Recognition Program. Illustrate your ideas and information with examples of how frequent feedback and recognition can be delivered. ► Include Justification Time frame How results

    asked by Denese
  129. math

    Driving at a constant rate, noah covered 130 miles in 3.5 hours. Express his driving rate in feet per minute.

    asked by kaykay
  130. science

    if a force of 50 N stretches a spring 250 mm, what is the elastic potential energy of the spring when it is stretched by 200 mm?

    asked by joey
  131. physics

    The masses of the earth and moon are 5.98x1024 and 7.35x1022 kg, respectively. Identical amounts of charge are placed on each body, such that the net force (gravitational plus electrical) on each is zero. What is the magnitude of the charge placed on each

    asked by anto99999999999999999999999999
  132. 5tth grade math

    every student in a second grade class sends a valentine to each of the other students in the class, for a total of 306 valentines.How many students are in the class.

    asked by tryston
  133. social studies

    My second grader is writing an essay on the blending of the American Culture. Help please!

    asked by Anna
  134. math

    The ratio of boys to girls in a school choir is 4:3. There are 6 more boys than girls. If another 2 girls join the choir, what will be the new ratio of boys to girls?

    asked by kaykay
  135. physics

    A boy of mass 65.3 kg is about to disembark from a canoe of mass 36.1 kg. The canoe is initially at rest, with the bow just touching the dock (see figure). The center of the canoe is 3.0 m behind the bow. As the boy moves forward 6.0 m to the bow, the

    asked by Anonymous
  136. fifth grade math

    at the school free throw contest, jane made 48 out of 60 shots. max made 78% of his shots, who is the better free throw shooter

    asked by anthony
  137. physics

    The location of two particles at t = 0 is shown in the figure below. The particles are initially at rest. Each particle is subject to a constant force, as indicated in the figure. (Take m1 = 2.06 kg and m2 = 0.95 kg.) (a) Find the position of the center of

    asked by Anonymous
  138. Albany, New York

    Why did Zorna Pour Ketchup on Her Brother's Hand?

    asked by Anonymous
  139. english

    why is the ending of a story significant?

    asked by ted
  140. College Physics

    A uniform plank of length L leans against a vertical wall, its head a distance h above the horizontal ground. If we let go of the plank from rest, how far above the ground is the head of the plank the moment it loses contact with the wall?

    asked by Grimider
  141. math

    Olivia picked 2.5 kilograms of cherries. She divided the cherries evenly among 10 small baskets. How much did each basket hold?

    asked by William
  142. Physics

    A small bead of mass m is free to slide along a long, thin rod without any friction. The rod rotates in a horizontal plane about a vertical axis passing through its end at a constant rate of f revolutions per second. Show that the displacement of the bead

    asked by Roger Cole
  143. Chemistry

    I need help predicting the products and naming them using classes and subclasses. a. Br2+BaI2 b. CdBr2+Na2S c. H2+Br2 d. H3PO4+Ca(OH)2 (Numbers above are supposed to be in subscript form)

    asked by Maddie
  144. chemistry

    A bag of potato chips contains 585 mL of air at 25°C and a pressure of 765 mm Hg. Assuming the bag does not break, what will be its volume at the top of a mountain where the pressure is 448 mm Hg and the temperature is 6.0°C? I set it up like p1v1/t1=

    asked by sam
  145. grammar

    underline the adverb and circle the word or phrase it tells more about. These furs brought extravagantly high prices. Theirs was a very solitary existence.

    asked by Carol
  146. Math-(Graphing)

    What would the function H(x)=0.002x^2+0.005x-0.029 look like?

    asked by Steve
  147. Math-(Graphing2)

    What would the functions 480-8t-0.8t^2 254+0.78t look like? How would they look like if they were added? (480+8t-0.8t^2+254+0.78t)

    asked by Steve
  148. Economics

    I have to fill in the following for a fascist economy. Ownership of resources = private Philosophers= Karl Marx (are there more?) Role of government= to controls production and allocation of resources Reaction to social and technological Change= don't know

    asked by Jeff
  149. Algebra

    A roadside vegetable stand sells pumpkins for $5 each and squash for $3 each. One day they sold six more squash then pumpkins and their sales totaled $98.00. Write a system of equations to find the number of pumpkins and squash they sold.

    asked by Hannah
  150. math

    if a wheel chair ramp is 6.10m long with a rise of 0.45m what should the angle of degree be

    asked by shaunna
  151. Chemistry

    Find the mass of hydrogen gas if 420.5 mL of nitrogen gas reacted to form ammonia at STP according to the equation: 3H2 + N2 = 2NH3

    asked by Mia
  152. geometry

    If the degree measures of the angles of a triangle are represented by x,y,x+y the triangle must be??

    asked by andrea
  153. math

    a ball is dropped 128 feet from the roof of a building with each bounce the ball goes up exactly half its previous height. A man is sitting at his desk on the second floor. How many times will he see the ball if his eye level is 15 feet above the ground?

    asked by sammie
  154. health

    Is it possible to have a stress-disorder? And if so, would it be deadly? Thank u for helping me with this strange question.

    asked by sierra (6th grade)
  155. math

    Rowan raised $640 in a chairty walked last year . this year he raised 15 percent more than last year. how much did rowan raise this year. wat do i do

    asked by pavleen
  156. chm

    Silver chloride, often used in silver plating, contains 75.27% .Calculate the mass of silver chloride required to plate 195 of pure silver.

    asked by ahmad
  157. physics

    Vector vector A has a magnitude of 27 units and points in the positive y-direction. When vector vector B is added to vector A , the resultant vector vector A + vector B points in the negative y-direction with a magnitude of 18 units. Find the magnitude of

    asked by jj
  158. physics

    A 4.5 kg block located on a horizontal frictionless floor is pulled by a cord that exerts a force F=13.50 N at an angle theta=30.0 degrees above the horizontal. What is the speed of the block 5.50 seconds after it starts moving?

    asked by jessie
  159. math

    If the O scale (model train question) is 1/48 the acutal length. An O-scale locomotive is 1.05ft long. How long is the actual locomotive?

    asked by megan
  160. english

    what are the styles of characterization

    asked by ted
  161. MAth(Someone please help)

    What would the function H(x)=0.002x^2+0.005x-0.029 look like?

    asked by Ethan
  162. math

    x y -1 1 0 4 1 7 2 10 3 5 i got the answer it 13 and 15 what duhh rule

    asked by pavleen
  163. Graphing(I Truly Need Help) :)

    What would the functions 480-8t-0.8t^2 254+0.78t look like? How would they look like if they were added? (480+8t-0.8t^2+254+0.78t)

    asked by Steve
  164. math

    bob has a container with a capacity of 12 quarts. he wants to express this capacity in gallons. write a proportion to find the number of gallons of water bob's container can hold.

    asked by pavleen
  165. Math

    Kate is 4yrs older than Margaret . In 7yrs the sum of their ages will be 70. How old are they now. How do you find kates age using mArgarets

    asked by Amy
  166. health

    List 3 word elements and examples in health field?

    asked by Jo
  167. math (8th grade)

    The length of each piece in a model train railroad built on the HO scale is 1/87 of the actual length. Another popular model is the N scale, for which the scale is 1/160. Each car on a full-size passenger train is 80ft long. What is the length in inches of

    asked by megan
  168. Chemistry

    Consider a gas that has a molar mass of 100.21 g/mol. What mass of this gas would occupy a 150 mL container under a pressure of 1.00 atmosphere and a temperature of 25 degrees centegrade?

    asked by Nili
  169. earth science

    what are the six most abundant components (elements)dissolved in seawater? what is produced when the two most abundant elements are combined?

    asked by frakia
  170. akgebra 2

    Use synthetic division to divide x^4+4x^3+6x^2+4x+1 by x+1

    asked by Adri
  171. Stats

    a population of 8 scores has a mean of 11. If one of the scores in this population is changed from x=9 to x=25, what value would be obtained for the new population mean?

    asked by Anonymous
  172. chemistry

    The total pressure in a 11.3 L automobile tire is 44 psi at 11°C. By how much does the pressure in the tire rise if it warms to a temperature of 29°C and the volume remains at 11.3 L?

    asked by HELP
  173. chemistry

    A bag of potato chips contains 585 mL of air at 25°C and a pressure of 765 mm Hg. Assuming the bag does not break, what will be its volume at the top of a mountain where the pressure is 434 mm Hg and the temperature is 4.3°C?

    asked by bob the builder
  174. Math

    How to find the (implicit) domain for the function f(x) = ln(16x + 14).

    asked by Diane
  175. math

    if a cheetah runs 64 mph how far can it run in 15 minutes?

    asked by linda
  176. math

    a squirrel runs 12 mph how far can it go in 5 minutes?

    asked by linda
  177. Science - Motion

    What are two aspects of motion????

    asked by m101
  178. Math

    Given that f(x) = a log x for some constant a, and that f(7)  5:282, determine the value of a and calculate f(13) to 3 decimals.

    asked by Diane
  179. math

    Super Bowl XLIV, which aired on February 7, 2010, included a record 47 minutes and 50 seconds of advertising in 104 commercial messages, the most of any Super Bowl. What was the average length, in seconds, of an ad shown during Super Bowl XLIV? Express

    asked by Anonymous
  180. History

    What did Mussolini, Hitler, and Stalin all share in common.

    asked by Ashley k.
  181. CRIMINOLOGY

    Describe one of the psychological or physical traits of the trait theories associated with criminal behavior and provide an example of a recent criminal who exhibits this trait.Might this crime be prevented in future circumstances?

    asked by kathy
  182. Math

    Does anyone know how to solve? (3cd^4)(-2c^2)

    asked by Kody
  183. physics

    On a distant planet, golf is just as popular as it is on earth. A golfer tees off and drives the ball 3.7 times as far as he would have on earth, given the same initial velocities on both planets. The ball is launched at a speed of 44 m/s at an angle of

    asked by Dyer
  184. Physics

    Suppose a straight 1.25 mm diameter copper wire could just "float" horizontally in air because of the force of the Earth's magnetic field B, which is horizontal, perpendicular to the wire, and of magnitude 5.00 multiplied by 10-5 T. What current would the

    asked by Justin
  185. US History

    How did Hitler respond to Germany’s obligations under the Treaty of Versailles when he became Germany’s leader?

    asked by Molly
  186. Science

    I need an acrostic poem for Photosynthesis?! I got everything else I need a few letters Photosynthetic or Plants Heterotrough Oxygen Tomatoes Outside Stoma Y????? N???? Trees H2O Energy Sun I???? Suger

    asked by Brianna
  187. Geometry

    A road climbs at an 8 degree angle with the horizontal. What is the grade of the Road.

    asked by Rose
  188. bus303

    List one external factor that you feel has a powerful influence on your company's HRM function and explain why.

    asked by mike
  189. Math

    Suppose that 34% of the people who inquire about investments at a certain brokerage firm end up investing in stocks, 30% end up investing in bonds, and 35% end up investing in stocks or bonds (or both). What is the probability that a person who inquires

    asked by Rachal
  190. Math

    I need to know how to figure out 290,000 is 70% of what???? How do I get the what?

    asked by Cheryl
  191. Chemistry

    If you begin with 100.0 mL of a 3.0 Molar solution of ammonium sulfate and 100mL of a 2.0 Molar solution of barium phosphate how many grams of Barium sulfate would be produced?

    asked by jackie
  192. math

    what is 21/10 as a percent

    asked by gop
  193. math

    what is 21/10 as a percent

    asked by gop
  194. math

    In a dice game if you roll a 2, 4, or 6 you get the value of the die. If you roll as 1, 3, or 5 you lose $5. What is the expected value of the game?

    asked by john
  195. Trig-Value of angle degree

    For the angle degree 0, i don't understand how for sin it's 0 and then for cos it's 1 and then for csc it's undefined. How would I get that algebraically? wouldn't it be just a line so how would I get the different values?

    asked by Amy
  196. fin 200

    using the financial statements for the goodyear calendar company calulate the 13 basic ratios

    asked by kim
  197. math

    what percent of 1/4 is 2/5

    asked by jess
  198. math

    x y -1 1 0 4 1 7 2 10 3 5 i got the answer it 13 and 15 what duhh rule

    asked by pavleen
  199. Reading/ELA

    What is a good sentence for syringe?

    asked by Anonymous
  200. physics 1 please help!

    A man seeking to set a world record wants to tow a 106000-kg airplane along a runway by pulling horizontally on a cable attached to the airplane. The mass of the man is 77 kg, and the coefficient of static friction between his shoes and the runway is 0.99.

    asked by Hannah
  201. physics 1 please help!

    A man seeking to set a world record wants to tow a 106000-kg airplane along a runway by pulling horizontally on a cable attached to the airplane. The mass of the man is 77 kg, and the coefficient of static friction between his shoes and the runway is 0.99.

    asked by Hannah
  202. math

    Complete the proof. Given: ∠DCE≅∠CDE≅∠DEC; ∠CDB≅∠CBD Prove: BC≅DE a. DE≅EC≅CD because ___? b. BC≅DC because ___? c. ∴ BC≅DE because ___?

    asked by Haleigh Dawson
  203. physics 2 help please!

    The space probe Deep Space 1 was launched on October 24, 1998. Its mass was 474 kg. The goal of the mission was to test a new kind of engine called an ion propulsion drive. This engine generates only a weak thrust, but it can do so over long periods of

    asked by Hannah
  204. physics help please!

    A spacecraft is on a journey to the moon. At what point, as measured from the center of the earth, does the gravitational force exerted on the spacecraft by the earth balance that exerted by the moon? This point lies on a line between the centers of the

    asked by Hannah
  205. physics please help! 116

    Two blocks are connected by a rope that passes over a set of pulleys. One block has a weight of 412 N, and the other has a weight of 908 N. The rope and the pulleys are massless and there is no friction. (a) What is the acceleration of the lighter block?

    asked by Hannah
  206. Ch. 5 physics help!

    There is a clever kitchen gadget for drying lettuce leaves after you wash them. It consists of a cylindrical container mounted so that it can be rotated about its axis by turning a hand crank. The outer wall of the cylinder is perforated with small holes.

    asked by Hannah
  207. physics help go!

    Two cars are traveling at the same speed of 27 m/s on a curve that has a radius of 126 m. Car A has a mass of 1020 kg, and car B has a mass of 1670 kg. Find (a) the magnitude of the centripetal acceleration and (b) the magnitude of the centripetal force

    asked by Hannah
  208. Biology - Uncertainty (Repost)

    I'm doing a bio lab, and I have collected data on heart rate measured in beats/15 secs with an uncertainty of +/- 1 beat/sec. To get heart rate per minute, I multiplied my data by 4, making my uncertainty +/- 4 beats/min. However, what I need to do now is

    asked by Stuck
  209. physics cars!

    Car A uses tires for which the coefficient of static friction is 0.175 on a particular unbanked curve. The maximum speed at which the car can negotiate this curve is 28.3 m/s. Car B uses tires for which the coefficient of static friction is 0.740 on the

    asked by Hannah
  210. physics for dummies!

    The man hanging upside down is holding a partner who weighs 699 N. Assume that the partner moves on a circle that has a radius of 3.37 m. At a swinging speed of 3.49 m/s, what force must the man apply to his partner in the straight-down position?

    asked by Hannah
  211. social studies

    what is secondary, tertiaty, quaternary industry of Ukraine

    asked by courtny
  212. Science

    you have 25 L cylinder of helium at a pressure of 135 atm and a temperature of 23 degrees celcius. the He is used to fill balloons toa volume of 1 L at .982 atm and 27 degrees celcius. how many balloons can be silled with He?

    asked by Uru
  213. math 3rd grade

    what kinds of angles do you see in the letters E,F, and L? Is right correct

    asked by mekhi
  214. social studys

    whats a funny social study story

    asked by crystal
  215. social studys

    what does a horse got to do with farming

    asked by crystal
  216. chemistry

    a sample of gas has a volume of 12liters at 0 degrees celcius and 380 torr. what will be its volume whent the pressure is changed to 760 torr at a constant temperature?

    asked by melissa
  217. statistics

    Suppose that in a particular year the probability of a college student being part-time was 0.43. For part-time students, the probability of being male was 0.33. For full-time students, the probability of being male was 0.42. Find the probability of a

    asked by Amiee
  218. math

    Write a word using capital letters. Your word needs to have 5 acute, 2 obtuse, and 5 right angles?

    asked by mekhi
  219. Language Arts

    I have to underline the simple subject and simple predicate and circle the prepositional phrase this sentence...There was a rank smell below the deck fromthe dead raccoon.

    asked by Sydney
  220. Calculus

    Find the derivative of 4e^x+x^3

    asked by Grace
  221. MATH

    During play, a ball with a diameter of 3.00 inches splits exactly in half. What is the volume of each portion of the ball?

    asked by Asher
  222. Math

    The cost of Mrs.Taylors purchases was $45.87 She had a coupon for 20% off the total. Find, to the nearest cent, the amount of money she will save if she uses the coupon?

    asked by Hannah
  223. fin 200

    i am really confused on what numbers to use to get the calculations on the 13 ratios

    asked by kim
  224. Math

    You can answer any 8 questions from the 12 questions on an exam. In how many different ways can you choose the 8 questions, assuming that the order in which you choose the questions is irrelevant?

    asked by Rachal
  225. Math

    The cost of Mrs.Taylors purchases was $45.87 She had a coupon for 20% off the total. Find, to the nearest cent, the amount of money she will save if she uses the coupon?

    asked by Hannah
  226. Math-7

    Write and equation that could be used to find x the number of ounces in g gallons x=

    asked by Justin
  227. Science

    __ NH4NO3 (s) --> __ NH2 (g) + __ HNO3 (l) Please balance equation!

    asked by Ronaldo
  228. ???

    how do you make a skit on the word vexation?

    asked by amy
  229. Calculus

    find dz/dx when z= (ln 5)e^x

    asked by Emily
  230. Physics

    A box with a mass of 5 kg is lifted (at constant velocity) to a height of 3 m to place it on the shelf of a closet. How much work was required to lift the box to this position?

    asked by Alex
  231. chemistry

    If you begin with 100.0 mL of a 3.0 Molar solution of ammonium sulfate and 100mL of a 2.0 Molar solution of barium phosphate how many grams of Barium sulfate would be produced?

    asked by jackie
  232. social studies

    Questions about Henry Ford the inventor: 1. Why was Ford not satisfied with the Model T at first? 2. How would working in a factory like the Highland Park Plant be dangerous? 3. What plan did Henry come up with to make the workers happier and to reduce

    asked by Kat
  233. math

    according to data from the national safety council, the fatal-accident rate per 100,000 licensed drivers can be approximated by the function f(x)=.0328x^2 - 3.55x + 115, where x is the age of the driver (16< or equal to x < or equal to 88). at what age is

    asked by anonymou
  234. physics

    How fast (in ) must a centrifuge rotate if a particle 8.00 from the axis of rotation is to experience an acceleration of 117000 's?

    asked by Tara
  235. MaTh

    Is (-3,2) a solution of 3x - 2y = 12 yes or no? Is it no?

    asked by CiCi
  236. Chemistry HELP!!!

    If 2.5 L N2 reacts with 7 L H2, what is the theoretical yield (in liters) of NH3? Assume that the volumes of reactants and products are measured at the same temperature and pressure.

    asked by Mishka
  237. Physcis 1

    A muscle builder holds the ends of a massless rope. At the center of the rope, a 7.9-kg ball is hung. Each end of the rope subsequently makes an angle of È with the horizontal. What is the tension in the rope if the angle È is 6.0°?

    asked by April
  238. Chemistry

    A helium balloon is filled to a volume of 2.88 x 10^3L at 722 mm Hg and 19 degrees Celcius. When the balloon is released, it rises to an altitude where the pressure and temperature are 339 mm Hg and -55vC, respectively. What is the volume of the balloon?

    asked by Ageha
  239. math

    you want to buy a shirt that costs $20. The sales tax is 7.25%.What is the total cost of the shirt?

    asked by gerardo
  240. SCIENCE

    MAKE A LIST OF ALL OF THE BOTTLES/FLASKS THE YOU CLASSIFIED AS BEING SOLUTIONS

    asked by SANKI
  241. physics

    an electric heater provides 2kW of power when connected to a 120 V potential difference. what is the current through the heater?

    asked by Musha
  242. social sudies

    the first kingdom in nubia was called kerma. what contact did the people of kerma have with egypt? in what ways were they liike the egyptians?

    asked by Anonymous
  243. Geography

    The people of Africa vary greatly across the continent. Thousands of different ethnic groups occupy this vast continent. In two or three well-developed paragraphs, suggest two ways in which ethnic groups can differ from one another besides language. Use

    asked by Lulu
  244. Pysichal Therapy Aide

    A PTA CAN ASK A SW TO HELP WITH ALL OF THE FOLLOWING EXCEPT: A. TO ASSES THE PATIENT'S HOME ENVIRONMENT AND INSTRUCT THE PATIENT AT DISCHARGE FROM THE HOSPITAL B. TO ARRANGE FOR HOME HEALTH SERVICES AT THE PATIENT DISCHARGED FROM THE HOSPITAL C. TO ARRANGE

    asked by Shannon
  245. Geometry

    find the lengths of the sides of a triangle whose perimeter is 37. The measure of the first side of the triangle is 8 less than the second side, and the second side is twice the length of the third side

    asked by Zach
  246. Math-True OR False Please Help!

    True or False? If the inverse function of f exists, and the graph of f has a y-intercept, the y-intercept of f is an x-intercept of f^-1

    asked by Steve
  247. calc a

    derivative of; ((1+x^2)^2)sin(2x)

    asked by steve
  248. Physics

    A 2.6-kg object hangs at one end of a rope that is attached to a support on a railroad car. When the car accelerates to the right, the rope makes an angle of 7.5° with the vertical, as shown in the figure below. Find the acceleration of the car

    asked by Anonymous
  249. History

    So, this isn't a homework assignment, but I really would like to know about US containment policy. Can someone tell me without sending me to links to research, please? I don't want to sound lazy, but because it isn't a homework assignment, I really don't

    asked by Jennifer
  250. algebra

    look first for the common factor check by multiplying if polynomial is a prime state this. y^2-y+0

    asked by Laura
  251. algebra

    factor completely if polynomial is a prime state this. 10s^2+4st-6t^2

    asked by Laura
  252. statistics

    Given a level of confidence of 95% and a population standard deviation of 14, answer the following: (A) What other information is necessary to find the sample size (n)? (B) Find the Maximum Error of Estimate (E) if n = 78.

    asked by Tammy
  253. algebra

    Factor completely first look for a common factor and check by multiplying If polynomialis a prime state this 27m^2-36+12

    asked by Laura
  254. math

    5 is to 8 as 15 is to (blank) ?

    asked by alyssa
  255. geometry

    If the perimeter of the smaller triangle is 9 cm, what is the perimeter of the larger triangle?

    asked by Anonymous
  256. Math

    5x + 10 =10y solve for y does y= 5x/10 + 1

    asked by Plz Help
  257. Algebra

    2x + y = -3

    asked by Kiara
  258. social studies

    how was it like on the middle passage for slaves??

    asked by harrison
  259. math

    how do I work the problem d=3.5t

    asked by tyler
  260. chemistry

    Write down a balanced acid-base reaction given the following reactants Reactants: NaOH(aq) + HCl(aq)

    asked by jonh
  261. Chemistry

    2 CO (g) + O2 (g) --> 2 CO2 (g) The mechanism below has been proposed for this reaction; (slow) O2 + CO --> CO2 + O (fast) O + CO --> CO2 Based on this mechanism what is the rate law for this reaction?

    asked by John
  262. Math

    how to solve (√(2)/2) / (-2/√(2)) steps too please the answer is 1 in other words it's tan(π/4)= 1

    asked by Amy
  263. Chem

    3 H2 (g) + N2 (g) --> 2 NH3 (g) How many liters of ammonia gas can be produced from 10.0 L of N2 and 20.0 L of H2? Assume all gases are measured at the same temperature and pressure.

    asked by James
  264. Physics

    Small parts on a conveyor belt moving with a constant speed of 1m/s are allowed to drop into a bin. The radius R is .5m. The coefficient of friction is .25. What is the angle at which the parts start sliding off the belt???? Don't even know where to begin.

    asked by Kindra
  265. chemistry

    What is the percent by mass of 3.55 g NaCl dissolved in 88 g H2O?

    asked by Anonymous
  266. chemistry

    What is the percent by mass of 3.55 g NaCl dissolved in 88 g H2O? 2. A solution is made by adding 1.23 moles of KCl to 1000.0 g of water. What is the % by mass of KCl in this solution? 3. If you have 100.0 mL of a 25% aqueous solution of ethanol, what

    asked by Anonymous
  267. Spanish

    1. Mis abuelos viven en Manhattan. ____ apartamento es grande y bonito. a. Sus b. Su c. Nuestros d. Nuestro C? 2. Para la comida, ¿___ Evangelina y tú el pescado o el bistec? a. prefieren b. prefiero c. prefieres d. prefiere A or C? 3. ____ después de

    asked by mysterychicken
  268. college algebra

    how do you slove this problem a rope is 72 feet long is cut into two pieces the longer piece is 3 feet than twice the shorter piece. How long is each piece ???

    asked by phila
  269. geometry

    Is it possible for the geometric mean and the arithmetic meam of two numbers,a and b, to be the same? explain. can you help me answer this question? thank you

    asked by mike
  270. Immigrant Experience

    Im doing this activity which is called township in upper canada, and we each got a person whom we have to shift in their new lot. So basically Im imagining that I am that person and that Ive got my lot. My location ticket says that my concession is 12 and

    asked by Sara
  271. math

    The are of a rectangular athletic field is represented by the expression 12y^3+48y^2+24y square meters.write an algebriac expression to represent one possible set of dimensions (in the same sense''length times width'')of the althetic field. include the

    asked by Nick
  272. CRIMINOLOGY

    Describe a physical traits of the trait theories associated with criminal behavior and provide an example of a recent criminal who exhibits this trait.Might this crime be prevented in future circumstances?

    asked by kathy
  273. Math

    How do I to solve r = 11ft?

    asked by Mia
  274. geometry

    A rectangle with an area of 32 inches squared has one side measuring 4 inches. A similar rectangle has an area of 288 inches squared. How long is the longer side in the larger rectangle?

    asked by Tori
  275. Math

    5y + 3 =2y - 3x + 5

    asked by Plz Help
  276. government

    congress inability to consistantly provide leadership on broad national issues is due to

    asked by Anonymous
  277. math

    John who is an amateur golfer spends 3 hours every day practicing golf. What percentage of his waking hours does John spend practicing golf if he sleeps 8.5 hours a day?

    asked by joann
  278. math

    look first for the common factor check by multiplying if polynomial is a prime state this. y^2-y+0

    asked by laura
  279. math

    factor completely if polynomial is a prime state this. 10s^2+4st-6t^2

    asked by laura
  280. social studies

    What would be the dangers of working in a factory like the Highland Park Plant in Henry Ford's time?

    asked by Anya
  281. math

    Factor completely first look for a common factor and check by multiplying If polynomialis a prime state this 27m^2-36+12

    asked by laura
  282. college chem

    Calculate the Mole Fraction of benzene in toluene if there are 5 grams of each in the mixture

    asked by shelby
  283. trig

    find x in DMS if 2sinx-1=cscx

    asked by claire
  284. Math

    Solve:(√2/2)/(-√2/2) steps too and i got -1 but the answer is supposed to be 1

    asked by Amy
  285. algebra

    What is the value of x so that the perimeter of the triagle is at least 57? 14 on left side x + 4 on right side 2x-3 on the bottom

    asked by Missy
  286. literature

    1. An important similarity shared by walt whitman and emily dickinson are? A. Fondness for big cityiving B. obscurity during their lifetime C. Rejection by the literary community D. Abandonment of literary conventions

    asked by Anonymous
  287. algebra 2

    4xy4-4xz4

    asked by james
  288. Socials - Need Help

    could someone please have a look at my post, I really need help.

    asked by Sara
  289. algebra

    Samantha's homework is to determine the dimensions of her rectangular backyard. She knows that the length is 10 feet more than the width, and the total area is 144 square feet. Write an equation that Samantha could use to solve this problem. Then find the

    asked by Anonymous
  290. Math

    is the slope of J(-4,6), K(-4,2) -4?

    asked by Mike
  291. spanish

    con dos amigas / salir a almorzar / esta persona / a las 12.00

    asked by jammy
  292. chemistry

    What is the percent by mass of 3.55 g NaCl dissolved in 88 g H2O? 2. A solution is made by adding 1.23 moles of KCl to 1000.0 g of water. What is the % by mass of KCl in this solution? 3. If you have 100.0 mL of a 25% aqueous solution of ethanol, what

    asked by Anonymous
  293. math

    mr.king, the owner of good morning groceries, wants to make a fence aea to put his carts in at night.he has 68 feet of fencing.what is the largest rectangular area he can fence? ( use only whole numbers)

    asked by jay
  294. chemistry

    What is the percent by mass of 3.55 g NaCl dissolved in 88 g H2O? 2. A solution is made by adding 1.23 moles of KCl to 1000.0 g of water. What is the % by mass of KCl in this solution? 3. If you have 100.0 mL of a 25% aqueous solution of ethanol, what

    asked by Anonymous
  295. Physics

    A 2.6-kg object hangs at one end of a rope that is attached to a support on a railroad car. When the car accelerates to the right, the rope makes an angle of 7.5° with the vertical, as shown in the figure below. Find the acceleration of the car

    asked by Anonymous
  296. Business

    4 each of examples identify financial decision you have made or might have to make in the future. In the last column, tell what effect this decision may have on ur personal resources. (Personal resources include things such as money, time and health.)

    asked by Anonymous
  297. chemistry

    expalin how Henry's law help a patient stay alive?

    asked by kerri
  298. business accounting

    what dose Lack of prejudice mean

    asked by Denese
  299. pre- algebra

    solve and simplify 6 to the 4th power * 6 to the 2nd power

    asked by john
  300. Chem 262

    What solvents would you use to isolate these compounds? Malonic Acid Salicylic acid Ethyl4-aminobenzoate

    asked by Sandra
  301. chesmistry

    how many molecules of water are produced when 3.8L of HN4NO3

    asked by treat
  302. business accounting

    can someone help me with some information on each one of this. Employee Receives Either Rewards or Punishments Employee Identifies Need Employee searches for ways to satisfy these needs Employee Reassess Need Deficiencies Employee Performs Employee Selects

    asked by Denese
  303. english (poetry)

    i have to write an acrostic poem on the word black...help me please and thank you.

    asked by blanca
  304. physics

    If the ball is in equilibrium when the string makes a 25.9 ◦ angle with the vertical as indicated, what is the net charge on the ball? Answer in units of µC. i know how to do this if i had the balls mass and the electric field or some other information,

    asked by Rachel
  305. physics

    As soon as a traffic light turns green, a car speeds up from rest to 46.0 mi/h with constant acceleration 8.50 mi/h-s. In the adjoining bike lane, a cyclist speeds up from rest to 24.0 mi/h with constant acceleration 12.00 mi/h-s. Each vehicle maintains

    asked by james
  306. Math/Chem - Very EASY

    What volume of lead (of density 11.3 g/cm3) has the same mass as 304 cm3 of a piece of redwood (of density 0.38 g/cm3?(Answer in units of cm3. Okay, so this is like testing us over the basics, but I really can't get the answer! I tried everything...

    asked by ND
  307. science

    What is the kinetic energy of a 14 kg dog that is running at a speed of 9.0 m/s (about 20 mi/h)

    asked by Renee
  308. science

    A microwave oven has a power requirement of 1248 W. A frozen dinner requires 6.9 min to heat on full power. (a) How much electrical energy (in kWh) is used? (b) If the cost of electricity is 12 cents per kWh, how much does it cost to heat the dinner?

    asked by Renee
  309. chemistry

    What volume of water would be required to dilute a 10.0 mL 0.650 M solution of calcium sulfate to create 0.25 M solution, what would the volume of the new solution be?

    asked by Elaine
  310. Composition

    Identify the main purpose of a persuasive essay and the elements necessary for it to be effective. Above is the question I had to answer. Here is what I wrote. I am looking for a second opinion if it reads well and covers the question adequately. Thanks...

    asked by Jim
  311. Physics

    a plane is flying at a velocity of 5500 km/hr, 55 degrees north of east. How far EAST has it traveled after 4 hours? How far North has it traveled after 4 hours?

    asked by Sara
  312. math209

    4x10^-8/2x10^30

    asked by john
  313. chemistry

    What would the wavelength of radiation whose frequency is 5.75*10 to the 9th cycles per second be? Name the type of radiation it is?

    asked by Elaine
  314. statistics

    Find the number z (± 0.01) such that 46% of all observations from a standard Normal distribution are greater than z:

    asked by sugar
  315. Physics

    How fast (in rpm ) must a centrifuge rotate if a particle 8.00 from the axis of rotation is to experience an acceleration of 117000g's?

    asked by Sam
  316. math

    Factor completely first look for a common factor and check by multiplying If polynomialis a prime state this 27m^2-36+12

    asked by laura
  317. Ms. Sue

    Ms. Sue could you please have a look at my previous post. Thanks:)

    asked by Sara
  318. Physics

    Sketch the velocity vs. time graph for an object that: • from 0 to 2 seconds has moved with constant velocity of 3 m/s • from 2 to 5 seconds was at rest • from 5 to 10 seconds increased its velocity, reaching 5 m/s at t =10 s. Could you please help

    asked by Kayla
  319. geometry/help

    Is it possible for the geometric mean and the arithmetic meam of two numbers,a and b, to be the same? explain. can you help me answer this question? thank you

    asked by mike
  320. physics

    (a) The sound of the splash is actually heard 2.2 s after the rock is released from rest. How far below the top of the well is the surface of the water? The speed of sound in air (at the ambient temperature) is 336 m/s.

    asked by jammy
  321. MAth

    Name two numbers that can be equally divided by 4 and 6

    asked by Tara
  322. physics

    Kathy Kool buys a sports car that can accelerate at the rate of 5.00 m/s2. She decides to test the car by racing with another speedster, Stan Speedy. Both start from rest, but experienced Stan leaves the starting line 1.00 s before Kathy. Stan moves with a

    asked by chuikia
  323. physics

    If the ball is in equilibrium when the string makes a 25.9◦ angle with the vertical as indicated, what is the net charge on the ball? Answer in units of µC.

    asked by mayra
  324. Algebra 2

    help with a question x+2/x-4 + x^2 + 6 I am not certain how to solve this problem at all

    asked by Jackie
  325. science

    A pound of body fat stores an amount of chemical energy equivalent to 3500 Cal. When sleeping, the average adult burns or expends about 0.45 Cal/h for every pound of body weight. How many Calories would a 126 lb person burn during 7 hours of sleep? (Note

    asked by Renee
  326. Science

    Calculate the Mass of C6H12O6 needed ot generate 2575 KJ of energy

    asked by Thomas
  327. Math

    Amanda will rent a car for the weekend. She can choose one of two plans. The first plan has an initial fee of $75 and costs an additional $0.40 per mile driven. The second plan has no initial fee but costs $0.60 per mile driven. How many miles would Amanda

    asked by Ilene
  328. english/ grammar

    would you say: her aspiration of freedom or her aspiration for freedom ?

    asked by Haley
  329. physics

    A hard rubber ball, released at chest height, falls to the pavement and bounces back to nearly the same height. When it is in contact with the pavement, the lower side of the ball is temporarily flattened. Suppose the maximum depth of the dent is on the

    asked by chuikia
  330. physics

    A parallel plate capacitor is made of two 3.0 cm x 3.0 cm square plates that are separated by 1.0 mm are connected to a12.0 V battery. If and electron is released from the negative electrode, what speed will it reach by the time it arrives at the positive

    asked by So Confused
  331. Physics

    A proton is moving toward a charge of + 2.8 nC. On its way in to the charge it passes Point B at 4.5 cm from the charge and then passes Point A at 1.2 cm as it gets closer to the charge. a. What is the potential difference between points B and A? b. What

    asked by So Confused
  332. Physics

    Two conducting spheres are connected by a thin wire and are in electrostatic equilibrium. The diameter of the smaller sphere is 3.0 cm and the diameter of the larger one is 8.0 cm. If the smaller sphere is found to be charged to 2.0 nC, what is the charge

    asked by Mr. Science
  333. math

    hey everyone, i have a question, by looking at a particular graph, how will you estimate the amount that is asked in a problem? (e.i. revenue, profit, stocks, etc) Do you just guess or something? thank you!

    asked by anonymous
  334. Physics

    There are 3 charges situated on the x-axis: a +3.0 nC charge at (-3 cm, 0), a +4.0 nC charge at the origin (0, 0) and a -6.0 nC charge at (3 cm, 0). What is the electric potential at the point (0, 3 cm) on the y-axis?

    asked by Mr. Science
  335. Physics

    A proton orbits a negatively charged wire that has a linear charge density of 8.0 x 10 -9 C/m. What speed must the proton have to maintain a circular orbit at 1.3 cm?

    asked by Please Help!!!!!!!!!!!
  336. Physics

    Two 18.0 cm diameter charged rings face each other, 22.0 cm apart. The left ring is charged to + 40.0 nC and the right ring is charged to + 15.0 nC. What is the force on a + 0.50 nC charge placed at the mid point?

    asked by Please Help!!!!!!!!!!!
  337. physics

    As soon as a traffic light turns green, a car speeds up from rest to 46.0 mi/h with constant acceleration 8.50 mi/h-s. In the adjoining bike lane, a cyclist speeds up from rest to 24.0 mi/h with constant acceleration 12.00 mi/h-s. Each vehicle maintains

    asked by chuikia
  338. Physics

    A 3.2 cm diameter plastic sphere is charged to -19.0 nC. What orbital frequency must a proton have to maintain a circular orbit around the sphere 2.4 mm above its surface?

    asked by Please Help!!!!!!!!!!!
  339. Physics

    A proton is launched from the surface of a 2.0 cm diameter glass sphere that is charged to -25.0 nC. What is the speed of the proton when it is launched so that it just escapes the influence of the charge of the glass sphere?

    asked by Please Help!!!!!!!!!!!
  340. Chemistry 125

    What is the maximum mass of water that can be released by heating a 6.895 g sample of nickel(II) sulfate heptahydrate?

    asked by Andrew
  341. Algebra

    How do you simplify (r+3)^3?

    asked by Rocky
  342. Calculus

    Find the volume of the solid formed by rotating the region enclosed by y=e^(2x)+3 y=0, x=0, x=0.9 about the x-axis.

    asked by Anonymous
  343. chemistry

    What is the percent by volume of isopropyl alcohol in a solution that contains 24 mL of isopropyl alcohol in 1.1 L of water? this the other one i need help with and thanks for the last help

    asked by Anonymous
  344. College history

    Explain the meetings that resulted in the Japanese seeing "Rolls-Royce,Rolls-Royce,Ford" and how was this part of Americans "clamoring for the outlawry of war? I need help with this question because I don't understand the question and what exactly it is

    asked by Karla
  345. french

    Ou'vit le garcon? mean in english?

    asked by ANITA
  346. MAth

    Pat Kan owns a factory that manufactures souvenir key chains. Her weekly profit (in hundreds of dollars) is given by P(x)=-2x^2+60x-120, where x is the number of cases of key chains sold. a) what is the largest number of cases she can sell and still make a

    asked by anonymous
  347. physics

    The height of a helicopter above the ground is given by h = 2.90t3, where h is in meters and t is in seconds. After 2.35 s, the helicopter releases a small mailbag. How long after its release does the mailbag reach the ground?

    asked by chuikia
  348. physics

    A test rocket is fired vertically upward from a well. A catapult gives it an initial speed of 81.0 m/s at ground level. Its engines then fire and it accelerates upward at 4.10 m/s2 until it reaches an altitude of 940 m. At that point its engines fail, and

    asked by chuikia
  349. literature

    In "A Pair of Silk Stockings," the silk stockings are a symbol of

    asked by Anonymous
  350. math

    Let f(x)= x^2-2x. Find f(1+h)-f(1) / h How do you solve this?

    asked by Sara
  351. health

    The level of chloroform which is considered toxic,?

    asked by Bacteria
  352. 5th Grade Math

    There are about 3,400 species of frogs and toads, and scientists tell us that they represent 90% of the amphibians in the world. Using this information, what is total number of amphibians scientists believe are in the world. (Round your answer to the

    asked by Janice
  353. Algebra

    Suppose you are paying your cell phone bill. The function C(m) represents the cost C of your monthly cell phone bill with m minutes. Given the equation: What does the number 0.25 represent?

    asked by Donna
  354. Physics

    I fire a tennis ball from an air cannon, straight up from ground level, at initial speed v0. At the instant it reaches the top of its trajectory, I fire a second tennis ball at the same initial speed. Air resistance is negligible. At what fraction of the

    asked by Cecille
  355. geography

    describe the varius type of forest vegetation. give good example describing the location and type of plants.

    asked by mat
  356. Physics

    You are an artillery offcer attached to Gaius Julius Caesar's Xth Legion in the Gallic War (1st C. BCE). You are responsible for a catapult, a device with a long spoonlike arm used to lob stones or pumpkins over the walls of Gallic oppida. These fortresses

    asked by Roberto
  357. Math

    Is the time it takes to run a 100-meter race a function of the speed you run?

    asked by Please help
  358. Physics

    A guitar string, destined to be an upper E string, has length 100 cm and mass 0.400 g. a. What is its mass per unit length? u = m/L = 0.004 g/cm b. What length of this string should be used on a guitar if the fundamental frequency is to be 330 Hz and its

    asked by Nick
  359. chem

    which of the following is insoluble (1)calcium chloride (2)ammonium phosphate (3)barium sulfate (4)potassium chromate

    asked by lisa
  360. physics

    You are traveling in a convertible with the top down. The car is moving at a constant velocity 22.7 m/s, due east along flat ground. You throw a tomato straight upward at a speed of 14.9 m/s. How far has the car moved when you get a chance to catch the

    asked by dyer
  361. science

    My son is in a group with two other boys and they need to construct a model of an earthquake resistant house. Can you give me a good website with some ideas on materials they should use and pointers on how to construct it? Or you might have some helpful

    asked by Mom needs help
  362. Chemistry

    which sample of matter is a mixture (1)H2O(s) (2)H2O(l) (3) NaCl(l) (4)NaCL(aq) please explain the answe !

    asked by Alex