Questions Asked on
May 7, 2017

  1. Statistics

    Find the probability of getting a prime number thrice by tossing a die 10 times.

    asked by Barney
  2. Chemistry

    What volume of 0.200 M K2C2O4 is required to completely react with 30.0 mL of 0.100 M Fe(NO3)3? 2Fe(NO3)3 + 3K2C2O4 --> Fe2(C2O4)3 + 6KNO3

    asked by Anonymous
  3. Trig Help Please

    A smokestack is 200 ft high. A guy wire must be fastened to the stack 30.0 ft from the top. The guy wire makes an angle of 42.0° with the ground. Find the length of the guy wire.

    asked by Samantha
  4. trigonometry

    Rewrite 4sin(x)-5cos(x) as Asin(x+phi)

    asked by Anonymous
  5. Chem

    Using this redox equation: Mn(OH)2(s) + MnO4-(aq) → MnO42-(aq) When the equation is balanced with smallest whole number coefficients, what is the coefficient for OH-(aq) and on which side is it present? ------I think its 4 and on the reactant side but i

    asked by Addam
  6. Chemistry

    How many grams of copper are deposited on the cathode of an electrolytic cell if an electric current of 2.00 A is passed through a solution of CuSO4 for a period of 19.0 min?

    asked by Durbin23
  7. Chemistry

    Which of the following statements is not true of nuclear fusion? A. It involves the joining of two atoms together into one new atom. B. It occurs in the sun and other stars. C. It only occurs in very large, heavy atoms. D. It releases very large amounts of

    asked by Ari
  8. algebra

    am I right? 1. Simplify radical expression sqrt 50 5 sqrt ^2*** 2 sqrt ^5 5 sqrt ^10 5 2. Simplify the radical expression sqrt 56x^2 28x 2x sqrt 14*** 2x sqrt 7 sqrt 14x2 3. Simplify the radical expression. sqrt 490y^5w^6 2 sqrt 135y^2 2y sqrt 135*** 27

    asked by Carl Wheezer
  9. finance

    Find the final amount in the following retirement account, in which the rate of return on the account and the regular contribution change over time. $470 per month invested at 5%, compounded monthly, for 7 years; then $709 per month invested at 7%,

    asked by un
  10. Chemistry

    An unknown metal, m, forms an ionic compound with the formula, M2S3. Which formula represents the compound formed by the metal with oxygen? a) MO b) MO2 c) MO3 d) M2O3

    asked by Anonymous
  11. Chemistry

    What is the empirical formula for a compound of sodium and oxygen that contains 59% by mass? I am guessing it would be NaO because the molar mass of Na is 22.99 g/mol and 22.99 g/mol Na / 22.99 + 16 is approx 59%. Just wanted to make sure that is correct.

    asked by Anonymous
  12. Science

    Four equal point charge each of 16microcoulomb are placed on the four corners of a square of side 0.2m.calculate the force on any one of the charge

    asked by Tavishi
  13. Chemistry

    Which electron transition in a hydrogen atom will emit a photon with the longest wavelength? n = 2 to n = 1 n = 3 to n = 1 n = 1 to n = 2 n = 1 to n = 3 I would assume it would be a short electron transition since energy and wavelength are inversely

    asked by Anonymous
  14. calculus

    Consider the curve defined by the equation y = 4x^3 +3x. Set up an integral that represents the length of curve from the point (0,0) to the point (4,268).

    asked by Sam
  15. Chemistry

    When a solution of a certain gadolinium salt is electrolyzed with a current of 1.0 A for 2.0 h, 0.025 mol of Gd metal forms. Calculate the charge on the gadolinium ion in the salt.

    asked by Durbin23
  16. Chemistry

    A 10.000 g sample of water contains 11.19% H by mass. What would by the %H in a 20.000 g sample of water? I got 22.38%, would that be correct?

    asked by Anonymous
  17. math

    My hundreds place is twice the lakh place

    asked by rajdeep
  18. Chemistry

    Calculate the mole fraction of ethanol in 95% by mass aqueous solution.Mol. mass of ethanol is 46.

    asked by Simar
  19. Business

    Custody is defined by the Supreme Court as happening when: A. A person has been taken into "custody." B. A person has been formally arrested. C. A person has been derived of his freedom of action in any significant way. D. All of the above.

    asked by Hai
  20. Trig

    A conveyor is used to lift paper to a shredder. The most efficient operating angle of elevation for the conveyor is 35.2°. The paper is to be elevated 16.0 m. What length of conveyor is needed?

    asked by Samantha
  21. chemistry

    Are these physical property's of a pure compound? What are physical properts off this list???? molar weight reactivity with halogens volatility melting and boiling points hardness, brittleness odor density air sensitivity flammability radioactivity colour

    asked by Cee
  22. Chemistry

    Which of the changes are chemical changes? a) Sugar crystals are ground to a fine powder. b) A candle is burned c) Two clear colorless salt solutions are mixed and a bright orange precipitate forms. d) Candle wax is melted e) A silver teapot turns black

    asked by Lee
  23. calculus

    If x = 18cos^3θ and y = 18sin^3θ, find the total length of the curve swept out by the point (x,y) as θ ranges from 0 to 2π.

    asked by Sam
  24. Chemistry

    Given the following standard reduction potentials in acid solution write the formula of the weakest reducing agent.

    asked by Durbin23
  25. English

    What are the overall effectiveness of the speech "Pearson’s address on the inauguration of the national flag of Canada" What are his persuasive goal and what arguments he uses to achieve his purpose?

    asked by Nikita
  26. Chemistry

    What mass of NO2 is formed by the complete reaction of 2 mol O3 with excess NO in the reaction? O3 + NO --> O2 + NO2 I know the molar mass of O3 is 48 g/mol and NO2 46 g/mol a) 23.0 g b) 46.0 g c) 92.0 g d) 96.0 g

    asked by Anonymous
  27. Chemistry

    What is the net ionic equation form the reaction between Na2S(aq) and Pb(HCO3)2(aq)? Just wanting to make sure this correct: 2Na+(aq) + S2-(aq) + Pb2+(aq) + 2HCO3-(aq) --> 2Na+(aq) + 2HCO3-(aq) + PbS(s)

    asked by Anonymous
  28. Chemistry

    Which element is oxidized and which element is reduced in this redox reaction? CO2(g) + H2(g) --> 2CO2(g) + H2O(g) Is Oxygen oxidized and hydrogen reduced?

    asked by Anonymous
  29. Algebra

    Bernie has $16000 invested, part at 3% and the remainder at 5%. If the yearly interest on each investment is the same, how much interest does he receive each year?

    asked by Leo
  30. CHECK my answers Physical science

    1. which of the following should be classified as a suspension? A. soda** B. sand in water C. glass D. milk 2. Which of the following is an of example of a chemical property? A. density B. flammability C. hardness** D. melting point 3. Which state of

    asked by anon
  31. Algebra

    A homeowner wants to enclose a rectangular piece of land beside a river. He must put a fence on 3 sides of the field (the river forms the fourth side). The field has length L (which runs parallel to the river) and width W. The homeowner has 200 yards of

    asked by Olivia
  32. algebra

    A tower 25 meters tall casts a shadow 20.8 meters long. What is the distance from the top of the tower to the end of the shadow?

    asked by Allen
  33. chemistry

    "What mass of silicon carbide should result when 100.00g of silicon dioxide reacts with excess 100.00g of carbon?" SiO2 + 3 C = 2 CO + SiC (balanced) Direct question from homework; I was wondering if someone could explain how to find the solution with

    asked by h. marie
  34. Chemistry

    When a radioactive isotope releases a beta particle, the atomic number of the new element is A. decreased by one. B. decreased by two. C. increased by one. D. increased by two.

    asked by Ari
  35. Psychology

    Miranda is a 23 year-old female who presents with symptoms of anxiety. She is dressed in baggy clothes and appears to be very thin. Miranda states that she worries a lot about her weight. Her father is obese, and she says that she does not want “to end

    asked by Amanda
  36. math

    Joe went school supply shopping. He spent $22.50 on notebooks and pencils. Notebooks cost $2.00 and pencils cost $0.50. He brought a total of notebooks and pencils. How many pencils did he buy? What i did n+p=15 0.50n+2.00p=22.50 i dont know who to do so

    asked by Garhl
  37. trigonometry

    8sin^2(x)+6sin(x)-9=0 simplify

    asked by frances
  38. physics

    the rate at which radiant energy from the sun reaches the earth's upper atmosphere is about 1.50kW/m2. the distance from the earth to the sun is 1.50*10^11m, and the radius of the sun is 6.96 * 10^8m. if the sun radiates as an ideal black body (e=1), what

    asked by jean
  39. stats

    Consumer Reports rated airlines and found that 80% of the flights involved in the study arrived on time (that is within 15 minutes of scheduled arrival time). Assuming that the on-time arrival rate is representative of the entire commercial airline

    asked by Mary
  40. Biology

    A dichotomous key is used to ___________. ? A. identify dicots, only B. identify organisms C. gain entry to homes by burglars D. determine the meaning of life ' my best answer is B is that correct

    asked by Cassandra
  41. Maths

    Ryan's car get 35.7 miles per gallon on the highway His fuel tank holds 12.64 gallons then how far can he travel on one full tank of gas.Round to the nearest mile

    asked by Dawn
  42. Algebra


    asked by Anthony
  43. Business

    If an in-court identification is influenced by an out-of-court identification, it is called a(n): a. tainted identification. b.flawed identification. c.unreliable identification. d.improper identification.

    asked by Hai
  44. Maths

    round off 451.248 to the nearest mile

    asked by Dawn
  45. Calculus

    Compute the absolute and relative errors in using x to approximate x. x=pi; c=3.18

    asked by Jahaira
  46. science

    Juggle and bangles are clowns.juggles stands on one end of a teeter-Ritter at rest on the ground.bangles jumps off a platform 2.5m above the ground and lands on the other end of the teeter-totter,launching juggles into the air.juggles rises to a height of

    asked by mbali
  47. chemistry

    When the equation: Al(s) + HSO4-(aq) + OH-(aq) → Al2O3(s) + S2-(aq) + H2O(l) is balanced with smallest whole number coefficients, the coefficient for the hydrogen sulfate ion will be ______.

    asked by John Butch
  48. math

    graphic pairs function in the same set of axis (1 quadrant) g(x)=3/7x+6&h(x)=3/7-3

    asked by sai
  49. Chemistry

    After balancing the following redox equation(using small whole-number coefficients), add the coefficients of all species in the balanced equation. Bi(OH)3 + SnO2^(2-) → Bi + SnO3^(2-) (basic solution) --- I separated the equation into two and i know the

    asked by Lucy
  50. Writing skills

    When, for example you can't spell a word. How do you look up the correct spilling? (1) word. How (2) word, how (3) word how (4) word; how (5) word or how I pick # 2 is this right

    asked by MyDogbear12 bear
  51. math

    The bases of a right prism are parallelograms with sides a=10 cm, b=6 cm, and altitude of the parallelogram towards side a, ha = 3 cm. Find the surface area of the parallelogram, if the height of the prism is h=12 cm.

    asked by M
  52. Chemistry

    Which response presents ions in order of increasing atomic radius? a) smallest Cl-, K+, Na+ largest b) smallest Cl-, Na+, K+ largest c) smallest K+, Na+, Cl- largest d) smallest Na+, K+, Cl- largest I would assume the answer would be D since the electrons

    asked by Anonymous
  53. Science

    In what fields would a lab technician need to separate & identify organic items? I looked it up and it said organic chemistry, forensics.. . I'm not which one because couldn't it range?

    asked by Julia
  54. Social Studies Business

    1. If a consumer makes monthly payments of $250 to pay off a car loan, what type of credit is she using? A) Non-Revolving B) Revolving C) Short Term D) Unsecured 2. Caitlin wants to buy an airline ticket, but she's uncomfortable taking that much cash to

    asked by Reeses
  55. Chemistry

    How much heat is absorbed when a 35.0 g aluminum block increases in temperature from 23°C to 33°C? Specific heat of Al: 0.900 J*g-1*°C-1 q=msΔT q=(35.0 g)(.900)(33°C - 23°C) q= 315 J? Just making sure there isn't anything that I am missing.

    asked by Anonymous
  56. Educational thechnonolgy

    Lines are used in a design to _____.Choose all that apply. A.Create movement B.lead the eye across the page C.describe the relationship between certain colors D.divide a page into sections

    asked by Kaitlyn
  57. Gr 12 Data

    Sarah tosses 5 coins, one after the other. a) How many different outcomes are possible? b) Draw a tree diagram to illustrate the different possibilities. c) In how many ways will the first coin turn up heads and the last coin turn up tails? d) In how many

    asked by Jeff
  58. Chemistry

    How many grams of chromium could be deposited on a bracelet using 0.180 A of electricity for 4.65 hours

    asked by Deborah
  59. Writing skills

    It is just as exasperating when you discover the definition of '' evocation '' is ''the act or fact of evoking'' If you rewrote sentence 4 beginning with. Nor are you. The next words should be (1). Just as exasperated (2) exasperated any lesser (3) any

    asked by Mydogbear
  60. Writing skills

    When you are told time after time that there are no jobs. And it is time for some creative thinking and acting. (1) jobs, or it (2) jobs, it (3) jobs, if it I pick #3

    asked by Mydogbear
  61. Maths

    When traveling b/w two towns the time taken varies inversely with the average speed when average is 42km/hour the journey takes 2hours20minute

    asked by Michael purity
  62. Writing skills

    It is just as exasperating when you discover the definition of '' evocation '' is '' the act or fact of evoking'' If you rewrote sentence 4 beginning with. Nor are you The next words should be (1) just as exasperated (2) exasperated any lesser (3) any less

    asked by Mydogbear
  63. Writing skills

    One of the approaches taken by these psychologists has been to investigate the foundation for a happy marriage. Which of the following is the best way to write the underline portion of this sentence? If you think the original is the best way, choose option

    asked by Mydogbear
  64. Math (Integrals) (Using given method)

    ∫sin(x)cos(x) dx Using the identity sin(2x) = 2 sin(x) cos(x)?

    asked by Ray
  65. Math

    Solve and graph the following inequality: -m/5+8>10

    asked by Maddie
  66. maths

    Given an equation of circle(x-2)2+(y-3)2=25,find the equation of the image circle after a reflection about the line y=x+3

    asked by girmay
  67. calculus

    from a cardboard box 12 in by 8 inches are cut out so the sides can be folded up to make a box . What dimentions will yield a maximum volume? What is maximum volume? we got our V = 4x^3--40x^2+96x V'=12x^2-80x +96 then we know to use quadratic equation I

    asked by kim
  68. Trig

    Is a triangle that has sides which measure 8, 15, and 17 a right triangle? Justify your answer, ie,

    asked by Samantha
  69. Trig

    Right triangle PQR with the right angle at Q has one side measuring 46 feet and the hypotenuse measuring 54 feet. Find the other side as a radical in simplified radical form and to the nearest tenth.

    asked by Samantha
  70. Algebra

    Right triangle ABC has the right angle at C. Angle B is 18.5° and side a is 17.9 centimeters.Find the length of the hypotenuse.

    asked by Steve
  71. Math

    A bag contains 10 yellow chips and 10 red chips what is the probability of that sara will pick a yellow chip keep it and then draw a red chip on her second draw

    asked by Joe Furr
  72. Calculus

    At what point is the function y=csc(2x) continuous?

    asked by Mike
  73. health, science

    How can I explain Lung cancer to children? I don't know how to explain in easy words. "Lung cancer is the uncontrolled growth of abnormal cells in the tissues of the lungs. If not treated, lung cancer may spread to the surrounding tissues and other parts

    asked by apple
  74. Algebra

    Simplify each polynomial. 6g + 8k - 9g + 2k

    asked by Mo
  75. Interpreting literature and the arts

    I remember mama Mama understands that that Jenny and Sigurd (1) are concerned about Trina's welfare (2) don't want Trina to become an old maid (3) want to feel superior to Trina (4) want Trina to be happily married (5) aren't interested in Trina's news I

    asked by Mydogbear
  76. Calculus

    A rectangular page is to contain 8 square inches of print. The margins at the top and bottom of the page are to be 2 inches wide. The margins on each side are to be 1 inch wide. Find the dimensions of the page that will minimize the amount of paper used.

    asked by Bianca
  77. math

    Marvin has a box containing apples and oranges. *There are a total of 100 apples and oranges in the box. *The number of apples in the box is 16 more than the number of oranges How many apples are in the same box? Answer: Its a system of equation so a+o=100

    asked by Garhl
  78. Maths

    A man walks for 9km in the direction 246 degrees and then for 6km in the direction 096 degrees. Questions;1. Find his displacement from his starting point. And 2. Illustrate the information above in a diagram.

    asked by Terence
  79. Chemistry

    Which compound has the highest lattice energy? a) CaO b) LiF c) MgO d) NaF I am guessing B because Lithium has the lowest energy level?

    asked by Anonymous
  80. Stat

    4 different letters are dropped on the floor and then inserted into four differently addressed envelopes. Find the probability that exactly 2 letters are inserted into the proper envelope.

    asked by James
  81. AVID (elective)

    Hi! I have 2 questions. Teacher told me that I have to answer each question by an essay. But please just give me only 4 sentences if that's alright. 1. How does booker t. washington ideas in UP in slavery and avid's mission similar? 2. What are the similar

    asked by Minny
  82. Physics

    The spring of force constant k = 400 N/m is set up horizontally with a 0.300 kg mass attached on it resting on a frictionless table. The mass is pulled so that the spring is stretched 0.100 m from the equilibrium point, and is then released from rest.

    asked by HIyas
  83. physics

    Suppose a tank contains 714 m3 of neon (Ne) at an absolute pressure of 1.01×10^5 Pa. The temperature is changed from 293.2 to 294.7 K. What is the increase in the internal energy of the neon?

    asked by tina
  84. calculus

    Find the length of the curve defined by the parametric equations x = 2/3t, y = 2ln((t/3)^2−1) from t =6 to t =7.

    asked by Sam
  85. essay edit help

    I looked around to see the Munchkins desperately running away, they screamed and rushed into their homes. The summer sun felt hot on my skin. “I thought you said she was dead” said a girl I’ve never seen before, “that was her sister the Wicked

    asked by kpop bois
  86. Reasoning

    Deborah's father is twice as old she is now.if their ages add up to 45 years how old is Deborah.

    asked by Maria
  87. physics

    a stone is thrown vertically upward with an intial velovity of 12m/s, after some time it returns to the same position a)what is the displacement of the stone b)the highest point it reached if it took 2 seconds for the stone to reach this point c)the

    asked by chibwe
  88. math

    my watch is twelve minutes slow .the bus for which I am waiting should have arrived at 3.49pm but it is five minutes late. What time would my watch show when the bus arrives?

    asked by sara
  89. precal vocabulary

    What is the vocabulary word for the direction of a curve when points are plotted in the order of increasing values of t? What is the vocabulary word for the form of the equation of a graph using a pair of parametric equations?

    asked by jasmin
  90. Business

    Custody is defined by the Supreme Court as happening when: A person has been taken into "custody". A person has been formally arrested. A person has been deprived of his freedom of action in any significant way. All of the above.

    asked by Hai
  91. math

    if log a= x and log b = y, then what is 1/3 log (ab)^3?

    asked by yuna
  92. English

    a sense of fear gushed throughout my body does it make sense?

    asked by Anonymous