Questions Asked on
January 16, 2012

  1. Calculus

    4. Find the area of the largest rectangle (with sides parallel to the coordinate axes) that can be inscribed in the region enclosed by the graphs of f(x) = 18 – x^2 and g(x) = 2x^2 – 9.

    asked by Anonymous
  2. Physics

    At the top of a frictionless inclined plane, a .50 kilogram block of ice possesses 6.0 joules of gravitational potential energy with respect to the bottom of the incline. After sliding halfway down the plane, the block's gravitational potential energy is?

    asked by Gonzalez
  3. Physics

    A horizontal force with a magnitude of 3.0 newtons applied to a 7.0 kilogram mass moves the mass horizontally a distance of 2.0 meters. Determine the work done against gravity in moving the mass. What is the formula that you use?

    asked by Carlos
  4. arithmetic

    the sum of the n termsof an ap whose first term is 5 and common difference is 36 is equal to the sum of 2n terms of another AP whose first term is 36 ans common difference is 5. Find n?

    asked by FEBIN
  5. Chemistry - Quantitative analysis

    A mixture weighing 7.290 mg contained only cyclohexane, C6H12 (FM 84.159), and oxirane, C2H4O (FM 44.053). When the mixture was analyzed by combustion analysis, 21.999 mg of CO2 (FM 44.010) were produced. Find the weight percent of oxirane in the mixture.

    asked by RJ
  6. Physics

    A total of 8.0 joules of work is done when a constant horizontal force of 2.0 newtons to the left is used to push a 3.0 kilogram box across a counter top. Determine the total horizontal distance the box moves.

    asked by Steven
  7. Chemistry Problem - hard :<

    Man in the vat problem. Long ago, a workman at a dye factory fell into a vat containing a hot concentrated mixture of sulfuric and nitric acids. He dissolved completely! Because nobody witnessed the accident, it was necessary to prove that he fell in so

    asked by Maxine
  8. 5th grade algebra

    Kenneth has $5. He spends g cents every day. How much money does he have left after one week?

    asked by leona
  9. statistics

    A manufacturer knows that their items have a normally distributed length, with a mean of 7.3 inches, and standard deviation of 0.6 inches. If one item is chosen at random, what is the probability that it is less than 5.5 inches long?

    asked by Rhi
  10. arithmetic

    find the cost of 100g rice at 95p per half kg

    asked by Anonymous
  11. Physics

    A runner is jogging at a steady 8.4 km/hr. When the runner is 2.6 km from the finish line, a bird begins flying from the runner to the finish line at 42 km/hr (5 times as fast as the runner). When the bird reaches the finish line, it turns around and flies

    asked by KGarcia
  12. College Chem

    A 2.446-g sample thought to contain only one volatile substance, MgCO3, was heated in a nitrogen atmosphere for 30 min. After cooling, the residue weighed 2.216 g. Calculate the percentage of magnesium carbonate in the sample.

    asked by Ann
  13. Chemistry Problem!

    What weight of sample containing 8.00 % Fe3O4 must be taken to obtain a precipitate of Fe(OH)3 that, when ignited to Fe2O3, weighs 150 mg?

    asked by Sarah
  14. Chemistry Homework

    If 0.8000 g of a mineral yields 0.2400 g of NaCl + KCl, and this mixture contains 58.00% of Cl, what is the percentage of Na2O and K2O in the mineral?

    asked by Rafael
  15. chem

    how many kilojoules of heat are absorbed when 1.00 L of water is heated from 18C to 85C? density of water is 1.0 g/ml

    asked by Skye
  16. Physics

    3 charges are arranged along the x-axis. q1 = -4.50 nC is located at x = 0.200m q2 = +2.50 nC is located at x = -0.300m q3 = is a positive character located at the origin. What is the value of q3 for the net eletric force on it to be 4*10^-6 N? I found the

    asked by Kyle
  17. Math

    A coin is tossed three times. If heads appears on all 3 tosses, Mary will win $16. If heads appears on 2 of the tosses, she will win $2. The game costs $5 to play. What is her mean expectation?

    asked by Claudia
  18. Chem 27

    An antacid tablet weighing 3.084 g was dissolved and diluted to 100.0 mL in a volumetric flask. A 25.00-mL aliquot was removed and treated with sufficient 8-hydroxyquinoline to precipitate all of the aluminum and magnesium. After proper collection and

    asked by Rika
  19. physics

    A physics student throws a softball straight up into the air. The ball was in the air for a total of 6.16 s before it was caught at its original position. (a) What was the initial velocity of the ball? (b) How high did it rise?

    asked by Anonymous
  20. Chemistry

    Jack occasionally goes to work by bicycle where he exhales once per 3.00 sec. If in Jack’s every exhale is 4.50% CO2 (by volume), he exhales a total volume of 4.6 L each time, and it takes Jack 20.0 minutes to bike to work, how many grams of CO2 has he

    asked by Kitty
  21. physics

    A simple pendulum is made from a bob of mass 0.04 kg suspended on alight string of length 1.4m. Keeping the string taut, the pendulum is pulled to one side until it has gained a height of 0.1m. calculate: a. The total energy of the oscillation (b) the

    asked by Nuwaya
  22. Chem Quanti

    An organic pesticide (MW 183.7) is 8.43% Cl. A 0.627-g sample containing the pesticide plus inert material containing no chloride was decomposed with metallic sodium in alcohol. The liberated chloride ion was precipitated as AgCl weighing 0.0831 g.

    asked by Charmaine
  23. 10th Grade Chem

    How do you determine if an element or compound is Aqueous, Solid, Liquid, or Gas just looking at a periodic table. Also, how do you determine if a compound or element is insoluble or soluble by looking at just the periodic table. What's the net ionic

    asked by Anthony Clay
  24. physics

    A 1.80 m radius playground merry-go-round has a mass of 120 kg and is rotating with an angular velocity of 0.350 rev/s. What is its angular velocity after a 28.0 kg child gets onto it by grabbing its outer edge? The child is initially at rest.

    asked by Jenny
  25. chemisrty

    Q1) A solution of ascorbic acid (C6H8O6, Formula mass = 176 g/mol) is made up by dissolving 80.5 g of ascorbic acid in 210 g of water, and has a density of 1.22 g/mL at 55 oC. Calculate the following: a) the mass percentage of ascorbic acid b) the mole

    asked by lyan
  26. Geometry

    The midpoint of the segment joining points (a, b) and (j, k) is: (j-a,k-b) j-a over 2 k-b over 2 (j+a,k+b) j+a over 2 k+b over 2

    asked by Jenna
  27. Chemistry

    What happens in the artificial transmutation of an element? Can you give an example?

    asked by Ryan
  28. chemisrty

    Q4) Suppose you prepare 950 mL of a solution by dissolving 100 grams of NaCl in 900 mL of water. Assuming the density of pure water to be 1 g/mL, answer the following questions with regards to this solution: a) What is the mass percent of water in this

    asked by lyan
  29. pre- calculus

    consider the collection of all rectangles that have lengths 2in. less than twice their widths. find the possible widths(in inches) of these rectangles if their perimeters are less than 200 in

    asked by Mary
  30. Physics

    A 32 kg child puts a 15 kg box into a 12 kg wagon. The child then pulls horizontally on the wagon with a force of 65 N. if the box does not move relative to the wagon, what is the static friction force on the box?

    asked by T
  31. Chemistry

    A .25 g chunk of sodium metal is cautiously dropped into a mixture of 50g of water and 50 g of ice both at 0 C  2Na(s) + 2h2o(l) -> 2naoh(aq) + H2 Delta H = -368 kj Will the ice melt Assuming the final mixture has a heat capacity of 4.18 J/g C calculate

    asked by Adriths
  32. Calculus

    1. Given the function f defined by f(x) = x^3-x^2-4X+4 a. Find the zeros of f b. Write an equation of the line tangent to the graph of f at x = -1 c. The point (a, b) is on the graph of f and the line tangent to the graph at (a, b) passes through the point

    asked by Anonymous
  33. chemistry

    the order of cation concentration of CuSO4, BaSO4, CaSO4 from highest to lowest.

    asked by saphire
  34. algebra

    please help me here with a and b and do i have c and d correct?, i do not know how to start. john put his spare change in jar every night. If he has $11.09, at end of Jan. . 22.27 at the end of feb, 44.35 in April, 75.82 in july, 89.00 in aug. and 114.76.

    asked by ann
  35. Chemistry

    Exactly 5.02 grams of an unknown gas was sealed in a 3.0L flask at 37 degrees celsius and a pressure of 1.25 atm. Which on of the following is most likely to be the unknown? H2O, HBr, HCN, H2S, C2H2 ok so I did (1.25)(3.0) = n(0.0821)(310) 3.75 = n(25.451)

    asked by Hannah
  36. chemisrty

    Q5) The reaction for the combustion of propane is as follows: C3H8 + 5O2 ---->>3CO2 + 4H2O 1. If 20.0 g of C3H8 and 20.0 g of O2 are reacted, which is the limiting reactant? 2. How many grams of H2O can be produced? 3. How many grams of the excess reactant

    asked by lyan
  37. English 2

    At the opening of A Separate Peace, the narrator returns to the Devon School two years after graduation. to become a teacher at the school. fifteen years after graduation. to attend his sons graduation. Unlike Finny, Gene tends to be spontaneous.

    asked by Anonymous
  38. 7th grade math

    suppose you used the rule (3x+1,3y-4) to transform the original figure into a new figure. Would the new figure be similar to the original? Explain. I NEED HELP ASAP PLEASE!!! HELP. Thanks.

    asked by Drake
  39. pre-calculus

    Write the first expression in terms of the second if the terminal point determined by the t is in the given quadrant: sin t, cos t; quadrant 2

    asked by Molly
  40. Physics

    Imagine that a person is seated in a chair that is suspended by a rope that goes over a pulley. The person holds the other end of the rope in his or her hands. Assume that the combined mass of the person and chair is M. What is the magnitude of the

    asked by T
  41. physics

    45. Here the same stone is being accelerated vertically upward. a. Draw force vectors to some suitable scale showing relative forces acting on the stone. b. Which is the longer vector, and why?

    asked by RAYMOND
  42. Math

    The Johnsons ordered new carpet for their family room. That paid 33% of the total cost when they ordered it, and will pay the remaining amount when the carpet is delivered. If they paid $192.72 when they ordered the carpet, how much will they pay when it

    asked by Anonymous
  43. Science 7R Q2

    What is the difference between a plant cell and an animal cell? a. plant cell have cell wall a animal cell don't b. a plant cell have cholroplast and a animal cell don't c. plant cell have a huge vacuole and a animal cell have a small vacuole d. animal

    asked by Laruen
  44. Physics

    A block starts at rest and slides down a fric- tionless track. It leaves the track horizontally, flies through the air, and subsequently strikes the ground.What is the speed of the ball when it leaves the track? The acceleration of gravity is 9.81 m/s2 .

    asked by Olivia
  45. math

    You are reducing a map of dimensions 2ft by 3ft to fit to a piece of paper 8in by 10in. What are the dimensions of the largest possible map that can fit on the page?

    asked by Anonymous
  46. Chem

    What weight of sample containing 8.00 % Fe3O4 must be taken to obtain a precipitate of Fe(OH)3 that, when ignited to Fe2O3, weighs 150 mg?

    asked by Yuki
  47. algebra

    A triangle has an area of 20 inches squared. Every dimension of the triangle is multiplied by a scale factor, and the new triangle has an area of 180 inches squared. What is the scale factor.

    asked by Anonymous
  48. physics

    An 88kg fisherman jumps from a dock into a 131kg rowboat at rest on the west side of the dock. If the velocity of the fisherman is 4.7m/s to the west as he leaves the dock, what is the final velocity of the fisherman and the boat. East is positive.

    asked by Bruce
  49. Physics

    Two small spheres of mass 451 g and 695 g are suspended from the ceiling at the same point by massless strings of equal length 10.9 m . The lighter sphere is pulled aside through an angle of 65 degrees from the vertical and let go. At what speed will the

    asked by amanda and leah
  50. Math

    Point T is the midpoint of line JH. The coordinate of T is (0, 5) and the coordinate of J is (0, 2). The coordinate of H is: (0, 8) (0, 3) (0, 7) (0, 11)

    asked by Della
  51. physics

    If you have swam one lap in a swimming pool, that means you have swam from one end to the other and back. In 3 h, a swimmer makes exactly 30 laps in a swimming pool that is 30 m long. Determine the distance the swimmer traveled, the total displacement of

    asked by lauren
  52. physics

    A piston in a car engine has a mass of 0.75 kg and moves with motion wich was approximately simple harmonic. If the amplitude of zis oscillation is 10 cm and z max. safe operating speed of z engine is 6000 rev. per min. Calculate: a. Max acceleration of z

    asked by Nuwaya
  53. math

    In Triangle ABC, AC = BC and mC = 62°. The longest side of the triangle is: AC BC AB AM

    asked by Trisha
  54. Chemistry

    What is the net ionic equation for this reaction? 2MnO4 (aq) + 5H2C2O4 (aq) + 6H(aq)----->10CO2 (g) + 2Mn(aq) + 8H2O(l)

    asked by Sara
  55. physics

    A ball rolling down an incline travels 6.0 m in the first 0.25 seconds, and 24 m in the first 0.50 seconds. Find: The average speed for the first time interval

    asked by Kristi
  56. chemisrty

    Explain why water (H2O) boils at 100 oC whereas H2S boils at -61 oC, even though sulfur has a higher atomic weight than oxygen.

    asked by lyan
  57. Chemistry - Gravimetry

    A commercial algaecide containing an organocopper compound was treated with concentrated nitric acid and evaporated to dryness. After dissolution of the residue, the copper was precipitated with -benzoin oxime. If the sample weighed 15.443 g and the

    asked by Jill
  58. Chemistry

    If a sample of Co2(CO)8 is found to contain 6*10^-2 mol of C atoms, how many grams of Co atoms are present? Molar Mass (g/mol) Co2(CO)8 - 341.95 Co atom - 58.933 C atom - 12.011 O atom - 15.999 Avaogadro's No.: 6.022*10^23 Do I need to use the 6*10^-2 mol

    asked by Kyle
  59. math

    suppose you use the rule (3x+1,3y-4) to transform the original figure into a new figure. How would the angles of the new figure compare with the angles of the original? Please, I need help ASAP

    asked by Mario
  60. pre-cal

    v=0.85 sin 3.14/3 where t is the time in seconds, find the time for one full respiratory cycle?

    asked by Anonymous
  61. Literacy

    1. Journals differ from magazines in that they're A. available by subscription. B. sources of academic research not intended for the general public. C. published only periodically. D. printed with volume numbers. my answer is B 3. It's important to include

    asked by Heather
  62. physics

    How much energy is needed to increase the temperature of 500g of lead from 20 degrees celcius to 45. The specific heat heat capacityof lead is 128J/kg/degrees celcius

    asked by chester
  63. geography

    Which state capital is east of 90 degrees W longitude: Jackson, Indianapolis, St. Paul? My answer is Indianapolis. 2. Describe the Pacific Ocean's location in relation to the continents it touches. The Pacific Ocean is East of Asia and Australia and West

    asked by Reed
  64. physics

    A car traveling at 60km/h. It then accelerates at 3.6m/s^2.How long does it take to reach a new speed. How far does it travel during acceleration.

    asked by please help!!!
  65. physics

    A ball with mass m rolls over the edge of a table h meters above the ground. It lands a distance x meters from a point directly below the edge of the table. Show that the speed of the ball at the edge of the table was v=x/sq rt 2h/g and that the kinetic

    asked by asheligh
  66. physics

    A sound wave, traveling at 348m/s, is emitted by the foghorn of a tugboat. An echo is heard 1.99 s later. How far away is the reflecting object? Answer in units of m

    asked by anon
  67. Physics

    Imagine that you are designing a circular curve in a highway that must have a radius of 330 ft and will carry traffic moving at 60 mi/h. a) At what angle should the roadbed be banked for maximum safety? b) If the roadway is not banked, what would the

    asked by TR
  68. Chemistry

    If a sample of C6H4(CH3)2 is found to contain 3.54 * 10^26 CH3 groups how many moles of C6H4(CH3)2 molecules are present? C6H4(CH3)2 - 106.17 CH3 group - 15.035 C6H4 Group - 76.098 Please explain steps

    asked by Kyle
  69. math

    suppose you used the rule (3x+1,3y-4) to transform the original figure into a new figure. Would the new figure be similar to the original? Explain. ASAP

    asked by DOMO!
  70. 7th grade science

    I really need help with some vocabulary words. I know what the definitions is but i have no idea what it looks like and i have to draw a picture for the two words. WORDS: vascular plant nonvascular plant Please help!! Thank you!!

    asked by saranghae12
  71. Chemistry

    What is the volume of 128 g of Oxygen at STP?... here's my work... O=16 128/16= 8 moles 8(22.4) = 179.2 L Where did i go wrong?

    asked by Jackie
  72. chemistry

    Determine the specific heat of iron if 6.1 J of energy are needed to warm 1.50 g of iron from 20 degrees C to 29 degrees C

    asked by Anonymous
  73. World History

    Gender Roles in Ming China Versus Western Europe 1450-1750 I have to write 2 sentences each comparing the gender roles. Having trouble finding this information

    asked by Fort
  74. physics

    james pushed his 10 kg cart with a constant horizontal force of 9.0 Newtons over a distance of 3.1 meters. If all frictional forces are neglected and the cart started from rest, what is the grocery cart's final speed in meters per second?

    asked by lucy
  75. math

    You are reducing a map of dimensions 2ft by 3ft to fit to a piece of paper 8in by 10in. What are the dimensions of the largest possible map that can fit on the page?

    asked by Anonymous
  76. physics

    A jet travels at 434 m/s. How long does it take to travel 294 m? Answer in units of s

    asked by anon
  77. geometry

    question; in the accompanying diagram of parallelogram abcd,m

    asked by crissy
  78. algebra

    0.15x+55>0.10x+80 how do i work this out?

    asked by brenda
  79. Science 7R

    how are cells organized in A multicellular organisms? cell, tissue, organ, organ system, organism, there's one more but i forgot... What is it???? Plus am I correct???

    asked by Laruen
  80. algebra

    what is the standard form of 2.4*10 to the fourth power

    asked by lila
  81. Chemistry

    A piece of Copper alloy with a mass of 89.0 g is heated at 30.0 degrees C to 50.0 degrees C. In the process, it absorbs 517 J of energy as heat. What is the specific heat of this copper alloy? and Please do a step by step, I really want to see where I keep

    asked by Anonymous
  82. chemistry

    Energy in the amount of 470 J is added to a 30.0 g sample of water at a temperature of 9.00 degrees C. What will be the final temperature of the water?

    asked by Mary
  83. English

    Ms Sue, thank you very much again for helping me. I just wanted to know, if possible, if writeacher is well. He has always helped me so much. Thank you.

    asked by Henry2
  84. finance

    The required investment is $1 million, and anticipated year-end cash flows are as follows: Year 1 2 3 4 Cash flow $300,000 $400,000 $500,000 $200,000 Compute the net present value rate of return using a 10 percent required return. What should be decision

    asked by goshtaba
  85. integral calculus

    ʃ (e^x – 4e^-x/e^x) dx need help...thnks

    asked by int
  86. Bank Reconciliation

    Aug 14th, One of our Partner's ( Compuville ) cash book showed a debit balance of $4,000.00. His bank statement showed a balance of $4,270.00. On comparison the following were found: * check issued amounting to $2,500.00 has not been cashed * The bank

    asked by Christine Carlton
  87. math

    bob bender needs to buy fertilizer and fencing for his vegetable garden.his square garden measures 10 feet on each side.the directions say that each bag of fertilizer will cover 50 square feet of soil.how many bags of fertilizer will he need to buy?How

    asked by drake
  88. physics-Please HELP!

    What percent error is introduced by weighing a Styrofoam block in air, which exerts an upward buoyancy force, rather than in vacuum? The density of air is 1.2 kg/m^3. (The density of Styrofoam is 160 kg/m^3)

    asked by Ashley
  89. English

    Ms Sue, I urgently need you to check these sentences I need to hand in for tomorrow and a few words. 1) knee-high socks, knee socks Are they both possible? 2) a two-tone jumper/ a two-colour jumper (which is best?) 3) She proposed going to the cinema She

    asked by Henry2
  90. Maths

    On the horizontal plane there is a vertical tower is a vertical tower and the shadow of its is found to be 40 m longer.when sun's altitude is 30 degree than what it is 60 degree.find the height of tower.

    asked by Saurav
  91. Physics

    “Rotor” is a ride found in many amusement parks that consists of a hollow cylindrical room (roughly 8 ft in radius) that rotates around a central vertical axis. Riders enter the room and stand against the canvas-covered wall. The room begins to

    asked by TAG
  92. geometry

    Solve for x, given that ABCD is an isosceles trapezoid, AC = 2x + 12, and BD = 4x - 30.

    asked by Octaisha
  93. trig

    How do I get exact measures? cosine 270 degrees sin 90 degrees tan 360 degrees csc 45 degrees no calculator!

    asked by lola
  94. physics

    Friction provides the force needed for a car to travel around a flat, circular race track. What is the maximum speed at which a car can safely travel if the radius of the track is 82.0 m and the coefficient of friction is 0.39?

    asked by bob
  95. spanish/check please

    Describe a typical day in your life from beginning to end eight different( (reflexive verbs).give time you do each of those activities as well. 1-Yo me levanto a las seis de la manana. 2-Entonces me lavo la cara a las seis y cuarto. 3-Depues de que me

    asked by nick
  96. math

    Ray OX bisects angle AOC and angle AOX =42 degrees, angle AOC is: 42 degrees 84 degrees 21 degrees 68 degrees

    asked by Randy
  97. Probability

    Automated chemical synthesis of DNA has made it possible to custom-order moderate length DNA sequences from commercial suppliers. Assume that a single nucleotide weighs about 5.6 X 10^-22 grams and that there are four kinds of nucleotides. If you wish to

    asked by Erica
  98. Math-Linear Equations

    Please let me know if I understand this correctly. Find the slope and the y-intercept of each equation: 1)y-9x= 1/2 +9x= 1/2 + 9x y= 1/2 + 9x slope:9; y-intercept: 1/2 2)2y-6=3x +6 +6 2y=3x + 6 - - 2 2 so then: y=3x+3 3) -2y=6(5-3x) -2y= 30-18x - -- -2 -2

    asked by Kate
  99. english

    i need a word similar to convey, but has a bad meaning

    asked by saphire
  100. Math problem

    solve by elimination 5x+2y=-11 7x-3y=13

    asked by Lavern
  101. math

    The soccer team ordered 140 T-shirts to sell at the school fair.Oh those T-shirts,50% white, 20% blue, 15% gren, 10% red, and 5% black.How many black and red?

    asked by Anonymous
  102. chemisrty

    Q3) Consider a 10 L container at 0 oC with 40 grams of He and 40 grams of Ar gases: a) Calculate the partial pressure of Ar in the container? b) Calculate the partial pressure of He in the container? c) What is the total pressure of the container?

    asked by lyan
  103. math compound interest

    I can figure all of the other compound interest problems except these-In how many years would Ben's $100,000 take to be worth $250.000 if compounded annually at the rate of 6.5%?-Thanks and good night :)

    asked by lola
  104. science

    Betsy and Michael are 150 meter apart, Michael is walking toward Betsy at a constant speed of 2.5m/s. start from the rest, how long it take to meet?

    asked by jade
  105. math

    bob bender need to buy fertilizer and fencing for his vegetable garden.his square garden measure 10 feet on each side.the direction say that each bag of fertilizer will cover 50 square feet of soil. how many bags of fertilizer will be need to buy? how many

    asked by Anonymous
  106. math

    suppose you used the rule (3x+1,3y-4) to transform the original figure into a new figure. Would the new figure be similar to the original? Explain. Thank you so much. (P.S, I need help ASAP D:)

    asked by Bella
  107. physics

    A stationary mass of 10 kg disintegrates explosively, with the evolution of 4.2*10^5 J, into three parts, two having equal masses of 3 kg. These two masses move at right angles to each other. Calculate the speed of the third part.

    asked by rikki
  108. math

    what is an equation of a polynomial function that has zeros at -3 and -2?

    asked by Ryan
  109. 7th Grade Math

    72-3(4^2-2^3)*3 Evaluate the expression. I don't know the steps to take so please include them in your answer, THANKS:)

    asked by Rebecca
  110. math

    Enter in standard form the equation of the line passing through the given point and having the given slope. B(2, - 5), m = -2/3

    asked by anna
  111. chemistry

    an original sample of K-40 has a mass of 25.00 grams. After 3.9x 10 to the ninth years, 3.125 grams of the original sample remains unchanged. What is the half-life ok K-40 in minutes? Is it 6.8328 x 10 to the 14th

    asked by micky
  112. Gravi prob chem

    In the gravimetric determination of barium as BaCrO4, what weight of sample must be taken so that the weight of the precipitate in milligrams multiplied by 100 will equal the % Ba in the sample?

    asked by Ariel
  113. Physics

    A car sits at a red light. Once the light turns in green, the driver accelerats at a rat of 3.5m/s^2. How far has the car moved after 6 seconds? I have so far d= (1/2)at^2 please check is it (1/2)(3.5m/s^2)(6 seconds) is the answer 1.75 m/s^2 x 6 sec=10.5

    asked by Tracy
  114. ELA

    "It is only with the heart that one can see rightly" and my interpretation of this quote is that If you truly believe in yourself, you can make the right decisions. I need help to relate this quote to ROmeo and Juliet with an appropriate literary element.

    asked by LISA
  115. math

    Suppose that you invest $1583 in an account that earns interest at an APR of 6.7%, compounded continuously. Determine the accumulated balance after 6 years.

    asked by Anonymous
  116. Physics

    A car is traveling counterclockwise along a circular bend in the road with an effective radius of 200 m. At a certain instant, the car’s speed is 20 m/s, but it is slowing down at a rate of 1.0 m/s^2. What is the magnitude of the car’s

    asked by TR
  117. World History/Railroads

    What was the Invention Purpose of the Railroads? And also Railroads I am a bit confused does it relate to the tracks or the trains the move on the Railroad tracks?

    asked by Vilvane
  118. Psy

    Describe a hypothesis related to the area of psychology in which you are predicting an interaction. Describe the specific nature of the interaction and why you think an interaction would occur. Justify your answers with appropriate research and reasoning.

    asked by Bonnie
  119. English

    What does civic stewardship mean??

    asked by Anonymous
  120. trig

    I have a couple of these and cannot locate directions I can understand-please help! Draw the graph of y=3cos(2x) for 0< or= x < or = 2 pi

    asked by lola
  121. Intermediate Algebra

    If company A has an excess amount of glove they are willing to sell for a flat rate of 79.95. and company B has gloves they will sell for 30.95 and .15 per pair of gloves and company C also has gloves they will sell for 20.95 and .35 per pair. when will

    asked by Georgianna
  122. geometry

    To the nearest tenth, what's the distance between the points k(7,-10) and M (1,4)

    asked by nikki
  123. geom/trig

    Using scissors to cut a rectangular piece of paper from one corner ro the opposite corner. The cut is 36 cm long and makes a 34 degree angle to the uncut edge. How many cm long is the paper (from the corner where he started the cut?

    asked by lola
  124. math

    A recently released film has its weekly revenue given by Where R(x) is in million of dollars and x is in weeks. (a) Find the asymptotes of the graph of the function R. (b) Find the intervals where R is increasing and decreasing, if any. (c) When will the

    asked by ninot
  125. physics

    A physics student throws a softball straight up into the air. The ball was in the air for a total of 6.16 s before it was caught at its original position. (a) What was the initial velocity of the ball? (b) How high did it rise?

    asked by Anonymous
  126. Math

    In Triangle ABC, AC = BC and mC = 62°. The longest side of the triangle is: AC BC AB AM

    asked by Trisha
  127. English

    I urgently need you to check these sentences I need to hand in for tomorrow and a few words. 1) knee-high socks, knee socks Are they both possible? 2) a two-tone jumper/ a two-colour jumper (which is best?) 3) She proposed going to the cinema She proposed

    asked by Henry2
  128. Geometry

    The midpoint of the segment joining points (a, b) and (j, k) is: (j-a,k-b) j-a over 2 k-b over 2 (j+a,k+b) j+a over 2 k+b over 2

    asked by Jenna
  129. Trigonometry

    2cos^2(x) = 13sinx - 5 How do i solve for x? I think i have to use the sin^2x + cos^2x = 1, but I'm not sure how to use that. I thought about maybe doing 2(1-sin^2x) = 13sinx - 5 but then i get stuck. Any suggestions?

    asked by Savannah
  130. chemistry

    15g of calcium is mixed with 36g of ethanoic acid.identify the limiting regent.

    asked by Anonymous
  131. Algebra II-please check

    Write the polynomial in simplest form with roots 4, 5i and -5i(multiply it out so no parentheses remain (x-4)(x+5i)(x-5i)(NOT SURE ABOUT THIS ONE) (x-4)(x^2-25i^22) (x-4)(x^2+25) x^3+25x-4x^2-100 x^3-4x^2+25x-100 Is this correct

    asked by Graham
  132. math

    Which of the following sets of Dewey Decimal call numbers is in the correct order? A. 100.01 PRO, 100.1 BLU, 010.1 ABR, 004.15 KWA B. 010.1 ABR, 004.15 KWA, 100.01 PRO, 100.1 BLU C. 100.1 BLU, 010.1 ABR, 004.15 KWA, 100.01 PRO D. 004.15 KWA, 010.1 ABR,

    asked by sam
  133. Calculus

    Let f be the function defined by f(x)=xe^(1-x) for all real numbers x.: a. Find each interval on which f is increasing. b. Find the x-coordinate of each point of inflection of the graph of f

    asked by Anonymous
  134. science

    Betsy and Michael are 150 meter apart, Michael is walking toward Betsy at a constant speed of 2.5m/s. start from the rest, how long it take to meet?

    asked by jade
  135. math

    What is 17 times 13.4

    asked by Mrs. Craig
  136. Math

    I have a box that is 15cm-wide, 10cm-long, and 3cm- wide. To get it's volume I would add all the sides. Thanks

    asked by Candice
  137. Chemsitry

    Alpha, beta particles and gamma rays. How does the atomic number and atomic mass number change when a radioisotope decays to produce alpha beta or gamma radiation.

    asked by Ryan
  138. math

    What is P(-4) given that P(x) = 2x to the fourth power - 3x to the third power + 5x to the 2nd power - 1?

    asked by Ryan
  139. 12th Grade Health Class

    My butt is itchy, how can I scratch it?

    asked by Lilly
  140. math

    x^2-7x+10=28

    asked by Anonymous
  141. math

    Give each letter of the alphabet a money value: A= 1 penny, B= 2 penny, C= 3 penny,and so on.Find words worth 1/5 dollar, 9/10 dollar, 1 1/20 dollars, and 1 1/2 dollars.

    asked by katy
  142. English

    Ms Sue, could you please check my sentences, please? I still have a few doubts. 1) How long is it since you (last) played with the band? Since last year. Or just last year. 2) How long ago did you last play with the band? A year ago. When describing a

    asked by Henry2
  143. English

    Improving Your Writing. Section 1 Facts and Figures that define the problem (the cause) Details that show the impact of the problem (effects) on Jack, Ruth, and the company. Section 2 The steps needed to change the situation Reason to implement each step,

    asked by Mamaw
  144. Calculus

    3. Discuss the graph of y=x/3+2+3/x. Determine the values of x for which the graph is a. Continuous b. Rising c. Falling d. Concave upward e. Concave downward f. Has a relative maximum g. Has a relative minimum

    asked by Anonymous
  145. math

    a mother is 21 years older than her new born daughter.how old will the daughter be when her age is 1/4 that of her mothers

    asked by shilpa
  146. Chemistry

    Jack drives 6.45 km to work and his car gets about 0.0147 km per gram of gasoline. Using the balanced chemical equation (you need to find out this equation by yourself), how many grams of CO2 is produced in this trip to work

    asked by Kitty
  147. chemexamples

    what are some good compounds(salts, acids,/bases) that are good conductors when dissolved in h2o

    asked by chemistry
  148. 6th grade math

    1/4 * 1/2 =4D

    asked by kirsten
  149. Science

    What is the best definition for The law of universal gravitation ?

    asked by Jim
  150. algebra

    -9y-12(2-3y)=-25-2(y+6 show work.

    asked by Adeline
  151. math

    Hello Jiskha-hope you can help me here! A straight road to the top of a hill is 2500 feet long and makes an angle of 12 degrees with the horizontal. Find the height of the hill?

    asked by lola
  152. IL state law please

    What is the hourly minimum wage in the state of Illinois please? Please refer me to the dollars and cents amount.

    asked by Paco
  153. geometry

    The altitude of an equilateral triangle is 7 square root 3 units long. The length of one side of the triangle is ____ units. 7 14 14 square root 3 7 square root 3 over 2

    asked by Randy
  154. math

    p=6s,for s

    asked by Ian
  155. geometry

    The coordinate of the midpoint of segment AB is (-3, 2). Find the coordinate of A if the coordinate of B is (0, 2). A = (-6,2) (-3/2,2) (3,2)

    asked by dana
  156. English

    Improving Your Writing. Is below look correct? Section 1 Facts and Figures that define the problem (the cause) Details that show the impact of the problem (effects) on Jack, Ruth, and the company. Section 2 The steps needed to change the situation Reason

    asked by Mamaw
  157. algebra 1

    what is 37

    asked by JACKE
  158. psychology please help asap

    Why might the study of identical (monozygotic) twins be valuable in constructing a model of abnormal behavior? How would dizygotic twins be different?

    asked by karina
  159. math

    1.Social Security laws allow you can collect full social security benefits at age 67 however; the law allows you to retired early at age 62 with a 30% reduced rate of benefits. If your full benefits were $1,000 a month, what would your reduced amount be at

    asked by anonymous
  160. statistics

    a male children born to women who smoke during pregnancy run the risk of violent and criminal behavior that lasts well into adulthood. can we infer that smoking during pregnancy is responsible for criminal behavior in people?

    asked by Anonymous
  161. Chemistry

    Given 80g of Calcium reacts with Fluorine at STP, how many atoms of Fluorine are consumed? Heres the formula: Ca (s) + F(subscript 2) --> CaF(subscript 2) How do i do this? Thanks! Jackie

    asked by Jackie
  162. Literacy

    6. To avoid plagiarism in your written research paper, you must provide a citation for which of the following? A. The United Nations ruling on the Soviet-bloc countries B. Former President John !@#$%^&ennedy's birthday C. Statistics about Web usage you

    asked by Heather
  163. algebra

    I need to solve this and am not sure how to approach?Do I first find for the sum of the first 2 terms? (x-2)/(x) + (1/2)= (x+1)/(x-2)

    asked by lola
  164. geometry

    you have been asked to help build a rectangular play area at the new tracy elementary school. you arrive at the site eager to begin. much to your suprise, the only things available to work with are two pieces of rope. Explain how you can use the rope to

    asked by Zeus
  165. Math

    719 plus 210 write as a numerical or algebraic expression?

    asked by Misty
  166. science

    I need to answer an essay question for science and I wanted to make sure of something first. The essay question is- What characteristics do plants share? Can you tell me if all plant cells have chloroplasts? I do not think they do so that would not be

    asked by Reed
  167. algebra

    given point slope form linear equation to use in answers y-3=3(x+ 1) a.What is equation in standard form of a parallel line that passes through (0, -2)? y = 3x -2 -3x + y = -2 b. on parallel line find the ordered pair where x = -2? would it be -2.0 if not

    asked by ann
  168. chemisrty

    Q2) If 0.327 moles of H2S effuses in 462 seconds, how many seconds would it take for the same number of moles of CH3Cl to effuse?

    asked by lyan
  169. math

    a local resturant sells muffins in boxes of 6, 9, and 20. determine whether the following amounts of muffins can be purchased. number of drsired muffins 15,99, 19, 48,76

    asked by rivul
  170. COM 1001

    How do the components and processes of communication apply to the electrnic/computer channel?

    asked by Chris
  171. CHEMISTRY

    1. The use of a more dilute NaOH solution for the standardization of NaOH.

    asked by MM
  172. Math

    I do not understand how to measure the volume of a star shape medallion. I think I would multiply all the stars on the medallion. Thanks for your help.

    asked by Thomas
  173. Math

    How would I draw an age appropriate graphic organizer on snow for a Pre K classroom?

    asked by Mandy
  174. SCIENCE

    what are the physiological benefits of eating breakfast. what are the physiological occurances or causes of fainting (syncope). how are these two ^ related and what is the significance

    asked by Katie
  175. Math

    I am an improper fraction.My numerator is twice my denominator.Iam equal to two if you simplify me.What can I be?

    asked by Anonymous
  176. Lab Math-Dilutions

    You have 1.50mL of a urine specimen. The assay you are about to perform requires a 1/25 dilution of this specimen. How much water must be added to the specimen to achieve this dilution? I know this is simple but I am not coming up with the right answer.

    asked by Morgan
  177. math

    What is P(-4) given that P(x) = 2x to the fourth power - 3x to the third power + 5x to the 2nd power - 1

    asked by Ryan
  178. math

    What is P(-4) given that P(x) = 2x to the fourth power - 3x to the third power + 5x to the 2nd power - 1?

    asked by Ryan
  179. math

    What is P(-4) given that P(x) = 2x to the fourth power - 3x to the third power + 5x to the 2nd power - 1?

    asked by Ryan
  180. math

    what is an equation of a polynomial function that has zeros at -3 and -2?

    asked by Ryan
  181. Math

    Ray runs at a speed of 6 1/2 miles. How long will it take him to run a track that's 12 7/10 miles long???

    asked by Anonymous
  182. Health

    explaining how a new office would be set up

    asked by Kimberly
  183. Education

    how should local schools respond to issues that might impact SEI instruction

    asked by Sarah
  184. math

    find the imaginary solutions of the equation by factoring. x to the third power - 16x = 0

    asked by Ryan
  185. health

    The easiest and best way for a teacher to plan a diet for young children that’s well balanced in nutrients is by using _______ guidelines.

    asked by Anonymous
  186. math

    Where p and q are statements, "p and q" is false if p is false. Always Sometimes Never

    asked by anna
  187. A&P

    together leucocytes and platelets compromise ? percent of total blood volume

    asked by Karen
  188. integral calculus

    ʃ (e^x – 4e^-x/e^x) dx need help...thnks

    asked by int
  189. Math

    Classify by degree an by number of terms f(r)= 2r to the second power +5r+7

    asked by Ryan
  190. math

    f(x)=x2+2x-5

    asked by bryan
  191. physics

    While John is traveling along an interstate highway, he notices a 166 mi marker as he passes through town. Later John passes a 120 mi marker. What is the distance between town and John’s current location? Answer in units of mi

    asked by anon
  192. algebra

    Cannot get this solution!!! (x-2)/(x) + (1/2)= (x+1)/(x-2)

    asked by lola
  193. physics

    Time() 0 2 4 6 8 10 12 14 16 Velocity() 0 0 2 5 10 15 20 22 22 By measuring the slope of your curve, find the magnitude of the instantaneous acceleration at times = 9s i don't know how to solve it

    asked by kim
  194. Math

    If 16% of the

    asked by Victoria
  195. Physics

    A(n) 7 g bullet is fired into a 122 g block that is initially at rest at the edge of a frictionless table of height 0.9 m. The bullet remains in the block, and after impact the block lands 1.7 m from the bottom of the table.The acceleration of gravity is

    asked by amanda and leah
  196. physics

    While John is traveling along an interstate highway, he notices a 166 mi marker as he passes through town. Later John passes a 120 mi marker. What is John’s current position?

    asked by anon
  197. CRE101

    What does it mean to evaluate the information that is revealed about a news sources? I am doing a assignment on compare and contrast esay on the difference between newspaper and news broadcast, and it is one of the questions. Do I evaluate the the person

    asked by Jazmyne
  198. Math

    How does tanθ look like in a graph? What would it be their y values?

    asked by melinda
  199. human body

    With your understanding of bone and muscle tissue (cells and the extracellular material) discuss two lifestyle factors (one for bone and one for muscle) that affect the growth, development, size and/or healing (positively or negatively) of the tissue.

    asked by Lynn
  200. geometry

    you have been asked to help build a rectangular play area at the new tracy elementary school. you arrive at the site eager to begin. much to your suprise, the only things available to work with are two pieces of rope. Explain how you can use the rope to

    asked by Zeus
  201. literacy

    When choosing your search strategy for a search engine, it's best to

    asked by carrie
  202. ANATOMY

    what are the physiological benefits of eating breakfast. what are the physiological occurances or causes of fainting (syncope). how are these two ^ related and what is the significance

    asked by Katie
  203. government

    How can presidential power as commander-in-chief restrict congressional power?

    asked by lidia
  204. Math

    In 2008 output for the country of OZ was 12,000 tons of potatoes and the total labor force 1,100 workers. In 2009 output for the country of OZ was 14,300 tons of potatoes and the total labor force 1,150 workers. 2008: Employment = 1,000 workers

    asked by Susan
  205. math

    If 26% is 180, what is 50%?

    asked by awesome person
  206. physical science

    the headlamp and 2 identical tail lamp are conected in paralel to batery with unknown internal resistancs.headlamp resistance wth 2.4 ohm controld by switch s1.the tail lamps are controled by s2.the resistance of the connection wired may be ignored.

    asked by queen
  207. math

    Find the area and perimeter of a rectangle for which (– 2, 2), (7,2), and (7, – 3) are three of the vertices. What is the 4th vertex?

    asked by shirley
  208. Economics

    Divide 825,000 by 40 million then round the answer to four (4) decimal places

    asked by Wendy
  209. Statistics-Confidence Interval

    Can someone please help me on how to work this out?? I'm so super confused. Thanks! A professor at Kaplan University claims that the average age of all Kaplan students is 36 years old. Use a 95% confidence interval to test the professor's claim. Is the

    asked by Sara
  210. Anthropology, sociology and psychology

    ''How do people act in an unfamiliar situation?'' How is this question in quote anthropological?

    asked by ted
  211. Fine Art 7 - Dr. King Letter (to share)

    Dear Dr. King. You was a brave man. A man who do whatever it takes to stop Civil Rights. A man with a beautiful wife and family. A man who became the public face of a movement. A man who tirelessly worked, marched, got arrested, spoke on the topics of

    asked by Laruen
  212. math

    suppose you use the rule (3x+1,3y-4) to transform the original figure into a new figure. How would the side lengths of the new figure compare to the side lengths of the original? I need help fast. Thank you so much.

    asked by Ruby
  213. math

    how do i find the percent of a component in a mixture given the amount of compound and the amount of mixture c=3g,m=8g please help thank you

    asked by nicole
  214. physics

    A car traveling in a straight line has a velocity of +8.5 m/s. After 3.5 s, its velocity is +9.0 m/s. What is the car's average acceleration in this time interval?

    asked by Anonymous
  215. Literacy

    Journals differ from magazines in that they're A. available by subscription. B. sources of academic research not intended for the general public. C. published only periodically. D. printed with volume numbers.

    asked by Heather
  216. literacy

    It's important to include references in your research paper because references A. give credit to authors. B. are required on most writing assignments. C. reduce the risk of false conclusions. D. prove that you didn't conduct your research on the Internet.

    asked by Heather
  217. physics

    a 1.67kg ball is atached to a ceiling by a 1.29m long string. the height of the room is 3.08m. the acceleration of gravity is 9.81 m/s^2. what is the gravitational potential energy associated with the ball relative to the ceiling?

    asked by yepiz
  218. math

    How do you solve C=ln(125000000/1-125000000

    asked by Gina
  219. literacy

    Which of the following keyword searches should retrieve the most results in an online database? A. Beta B. Beta OR blockers C. Beta NOT blockers D. Beta AND blockers Which of the following will probably contain the most objective data? A. A memoir about

    asked by Heather
  220. Friction

    Why can't you pull two phone books apart that have each of their pages one on top of the other?

    asked by Blake
  221. Compounded monthly

    P - Po(1 + r/n)nt P = $10,000 r = 6.5% n = 12 t = 216MO

    asked by Mary
  222. math

    Hi I'm Having a problem with a question in the application of the maximum and minimum (derivative) I want to prove that the height = 3 and i had this relation ===> H = h + r and h = - 2r ! I'm sure that (H) = 3 r But I Can't get the answer of (h) in

    asked by yousif
  223. Precalc

    Suppose vector a is 3 units long, the magnitude of vector b is 1 units and cos (θ) = -0.3, where θ is the angle between the two vectors when they are placed tail-to-tail. What does the inner product of vector a and vector b equal?

    asked by Grace
  224. math-calculus

    i did this question long time ago and i realize today that at back of book answer be different. write the following absolute value functions as piecewise functions. g(x) = |x+1| positive be x+1 negative be -(x+1) but in back of book it says negative one be

    asked by Shreya
  225. government

    what is the consumer price index?

    asked by celiah
  226. german

    is skinny jeans masculine femine or neuter

    asked by rheanna
  227. trig

    how do I find this without a calculator? sin 90 degrees?

    asked by lola
  228. socials

    can anyone plz tell me about cuba's welfare

    asked by smileyface
  229. French

    Can someone edit my ISU? it's only 8 paragraphs.

    asked by Kristina
  230. science

    how is eating breakfast important to prevent fainting

    asked by Katie
  231. Literacy

    What would a careful researcher ask about a Web site called "Facts about pesticides and health" published by the Coalition for a Chemical-Free Environment? A. How can I obtain copies of this article? B. Is this information being used to advocate a point of

    asked by Heather
  232. languag arts

    In the sentence, "Sylvia looks good in her mermaid costume" why is good the correct word used as an adjective, as opposed to using well as an adverb. Isn't "good" describing how Sylvia looks?

    asked by Jen
  233. nonfiction

    write a small paragh about caravan

    asked by zavier
  234. division of complex numbers

    (1-2i)/(2+3i) Do I multiply both the numerator and denominator by 2+3i?

    asked by lola
  235. quadratic equations

    Please solve for x. ax^2 + bx +c=0

    asked by lola
  236. Literacy

    4. Which of the following would be the best way to get to a list of encyclopedias that are available on the Web? A. Search a periodical database. B. Look at the Library of Congress Web site. C. Visit the Internet Public Library. D. Search the library

    asked by Heather
  237. Literacy

    11. You're writing a paper on exercise and health, so you enter "exercise and health" in a keyword search to find articles in a library database. Your search, however, produces several thousand articles. Which of the following would help you retrieve

    asked by Heather
  238. World History

    I have to write 2 sentences each from the early modern time period. European Versus Asian Economic Systems Having trouble finding Asian information

    asked by Fort
  239. english

    The Smith's are going to dinner   OR The Smith's is going to dinner... i think it is the first one but because we say my family is going to the park NOT my family are going to the park so... thx

    asked by saphire
  240. Economics

    In 2008 output for the country of OZ was 12,000 tons of potatoes and the total labor force 1,100 workers. In 2009 output for the country of OZ was 14,300 tons of potatoes and the total labor force 1,150 workers. b. The growth rate of average labor

    asked by Susan
  241. Literacy

    12. When books are arranged in correct order on the shelves by call number, which of the following call numbers will be first? A. DA 546 .L74 1986 B. D 839 .G3 1987 C. D 839 .G42 2004 D. DE 82 .A49 2006 i answered A

    asked by Heather