Popular questions and responses by Alisha
  1. Maths

    What does index notation mean? pls help thnx xxx

    asked on August 9, 2019
  2. chemistry

    H2So4+NH4OH Find the complete ionic equation Find the spectator ions Find the net ionic equation I feel like my answer is wrong i tried CIE: 2H+(aq)+So42-(aq)+2H4+(aq)---> 2NH4+(aq)+So42-(aq)+H2o (l)

    asked on February 24, 2015
  3. Math

    You are given 9 to 1 odds against rolling a sum of 8 with the roll of two fair dice, meaning you win $9 if you succeed and you lose $1 if you fail. Find the expected value (to you) of the game.

    asked on September 30, 2012
  4. Chemistry

    How do you write the chemical equation of the dissociation of nicotinic acid, C5H4NCOOH, in water?

    asked on January 13, 2013
  5. Math

    The common ratio of a geometric progression is 1/2 , the fifth term is 1/80 , and the sum of all of its terms is 127/320 . Find the number of terms in the progression.

    asked on January 27, 2020
  6. Algebra

    A gardener is making a planting in the shape of a trapezoid. It will have 41 plants in the front​ row, 37 in the second​ row, 33 in the third​ row, and so on. If the pattern is​ consistent, how many plants will there be in the last​ row? How many

    asked on November 30, 2016
  7. Physics

    A coil is wrapped with 200 turns of wire on the perimeter of a square frame of sides 20.5 cm. Each turn has the same area, equal to that of the frame, and the total resistance of the coil is 2.01 Ω. A uniform magnetic field is turned on perpendicular to

    asked on October 23, 2014
  8. Chemistry

    11.4mL of 0.7 M NaOH was used to titrate 5.0mL hydrochloric acid. What is the molarity of the acid? a) 0.3 b) 1.6 c) 3.9 d) 5.0 e) 8.1 Can someone answer this question and explain how to get the answer?

    asked on January 27, 2013
  9. mathhelop

    A hot-dog stand owner makes a profit of $100 when he sells 90 hot dogs a day. He has a loss of $30 when he sells 25 hot dogs a day. Write a linear equation that represents his profit? No idea what I am supposed to do.

    asked on June 17, 2017
  10. HISTORY PLEASE HELP!!!!!!!!!!

    *** = my answer choice. 1. Which of the following best describes the Klu Klux Klan during Reconstruction? A. a gun club for former Confederate Soldiers. B. a secret political terrorist organization. C. a social group whose members masqueraded in sheets and

    asked on March 3, 2016
  11. Physics

    A man walking on a road at 3km/hr encounters rain falling vertically at 18km/hr. At what angle should he hold the umbrella to protect himself from rain?

    asked on October 27, 2016
  12. Chem

    Suppose you have Avogadro\'s number of mini marshmallows and use them to cover the state of California which has a land area of 1.560 × 105 mi2. Each mini marshmallow has a diameter of 0.635 cm and a height of 2.54 cm. Assuming the marshmallows are packed

    asked on September 3, 2016
  13. Math

    Whom should you see at the bank if you need to borrow money?

    asked on April 13, 2011
  14. Calculus

    Please simplify the expression: 2log(base 4)9 - log(base 2)3

    asked on July 8, 2015
  15. Chemistry

    What volume (in liters) is occupied by 3.85×10^22 nitrogen molecules at 105 C and 255 mmHg?

    asked on July 27, 2012
  16. Statistics

    A comparison is made between two bus lines to determine if arrival times of their regular buses from Denver to Durango are off schedule by the same amount of time. For 51 randomly selected runs, bus line A was observed to be off schedule by an average time

    asked on July 11, 2012
  17. Science

    The Millennium Force is the highest roller coaster in North America. It reached a maximum height to 94.5 m. The total mass of the roller coaster car and its passengers is 1380 kg. The speed of the roller coaster is 41.1 m/s at its lowest point on the

    asked on June 1, 2017
  18. Chemistry Help!

    Anthracene which contains only Carbon and hydrogen, is an important source of dyes. When 250 mg of anthracene is burned in pure oxygen, 8.64 mg of CO2 and 1.26 mg of H2O are formed. What is the empirical formula of anthracene?

    asked on October 4, 2012
  19. trig

    Mr. Saurik proposed that the function h(t) = 6sin(3pi(t) - pi/3) + 5, where h(t) is in meters and t is in seconds, models the height above the ground of a point on a spinning wheel. Is Mr. Saurik's equation plausible? Explain.

    asked on December 3, 2011
  20. Science

    1) A piece of paraffin wax has a density of 9g/cm3, mass of 900g, and a volume of 100cm3. If the wax was melted to the liquid state, approximately what would it's volume be? Would this wax float or sink in water? Explain. 2) A tin box ( Mass of 80g, Volume

    asked on March 8, 2011
  21. science

    why does mold grow faster in warmer temperature

    asked on February 22, 2010
  22. religon

    Who was the faters of the following isaac and Ishmael cain and able jehoshaphat nimrod absalom and soloman samuel lot esau and jacob joseph and his bothers david simeon peter ephriam and manasseh racheal and leah moab samson joshua jesse johnathan rehoboam

    asked on June 13, 2009
  23. chemistry(water molecules)

    What does a water molecule look like (the shape)and what atoms does it contain? Also why are water molecules polar molecules? A water molecule contains two hydrogens and one oxygen between them. However, the 3 atoms are not in a straight line - the

    asked on January 4, 2007
  24. English

    I like Jorge Luis Borges' essay 'The Wall and the Books,' but I like his book Collected Fictions better. Which word or phrase in the sentence needs to be in italics? A. I like Jorge Luis Borges' B. Collected Fictions C. 'The Wall and the Books' D. but I

    asked on April 17, 2019
  25. English

    Did you see that car accident?! Is the punctuation correct?

    asked on December 21, 2018
  26. Math

    Regular quadrilateral prism has an altitude h = 11 cm and base edges b=8 cm. Find the sum of all edges.

    asked on April 17, 2017
  27. Physics

    A river flows from south to north at 5km/hr. On this river a boat is heading east to west perpendicular to the current at 7km/hr. As viewed by an eagle hovering at rest over the shore, how fast and in what direction is the boat travelling?

    asked on October 27, 2016
  28. physics

    An 800 kg police boat slows down uniformly from 50 km/h [E] to 20 km/h [E] as it enters a harbour. If the boat slows down over a 30 m distance, what is the force of friction on the boat? (Hint: You will need to convert the velocities into m/s.)

    asked on July 15, 2014
  29. business

    Imagine this team is in a room together brainstorming and working on a team project. Using your experience and what you've learned this week, suggest a design for a room that would facilitate team interaction. In the team discussion area, respond to the

    asked on November 12, 2013
  30. Chemistry

    I need to write the equation for the neutralization reaction of NaOH and nicotinic acid (C5H4NCOOH). Here is my attempt: C5H4NCOOH + NaOH → C5H4NCOONa + H2O First of all, is the formula for nicotinic acid correct? I am finding mixed answers when I search

    asked on January 13, 2013
  31. French 2

    Ma Jupe est trop longue (pantalon)

    asked on October 21, 2012
  32. chemistry

    How many grams of Al will react with 3.00 mol of 0(2)?

    asked on September 26, 2010
  33. chemistry

    What is the ph of a 0.00100 M HCl solution?

    asked on June 21, 2010
  34. Science

    I want a catchy prahse for my topic- experiment"Can water be split into hydrogen and oxygen?"

    asked on June 15, 2010
  35. Sci

    I want a catchy prahse for my topic experiment"Can water be splitted into hydrogen and oxygen?"

    asked on June 14, 2010
  36. chemistry

    write the reaction for the dehydration of CuSO4 . XH20?

    asked on June 14, 2010
  37. Sci

    Whats My hypothesis for "Can Water Be Split Into Hydrogen and Oxygen?"

    asked on June 13, 2010
  38. phyics

    convert 36cm/min to km/h

    asked on April 6, 2010
  39. 6th grade

    Use an integer to represent each situation. earned $100 800 ft gain in elevation 12 below 0 c 4 above 0 F a debt of $25 lost 5 pounds

    asked on April 29, 2009
  40. science

    what is a major difference between the Protist kingdom and the Animal kingdom? PLEASE HELP ME!!!!!

    asked on October 13, 2008

    Imagine you have a light bulb and battery conductivity tester. You are given a dilute solution of copper sulfate and a dilute solution of vinegar, acetic acid. Coppersulfate is an ionic compound. You may recall acetic acid reacts with water to produce ions

    asked on January 9, 2007
  42. math

    the 90 members of a sports club play at least one of the games tennis, football, volleyball. 10 play tennis and football, 19 play football and volleyball and 29 play tennis and volleyball.n people play all three games. 2n people each play only one game,

    asked on April 25, 2020
  43. Physics

    A force of 40N is applied at the end of a wire 4m long and produces an extension of 0.24mm.If the diameter of the wire is 2.00mm, calculate the

    asked on February 28, 2020
  44. Math

    Three numbers X, Y, and Z are in the ratio 2:7:8. If 12 is subtracted from Y, then three numbers form a geometric sequence (in the order X, Y–12, Z). Find X, Y, and Z. There are two sets of answers I already found one set i am unsure how to find the

    asked on January 20, 2020
  45. Math

    Find the first three terms of an arithmetic series in which the fifteenth term is –7 and the sum of the first fifteen terms is 210

    asked on January 20, 2020
  46. Maths

    Reduce 1140 by 10% How do I do this, Please help Thanks xx

    asked on August 5, 2019
  47. quadratics

    Write the function f(x) = ax^2 + bx + c in completed square form. SHOW YOUR WORK!!!

    asked on March 3, 2019
  48. social

    Why is trade necessary?

    asked on February 19, 2019
  49. Math

    Find acute angle when m=-2/3

    asked on November 11, 2018
  50. Science

    How does one read a cladogram?

    asked on December 8, 2017
  51. English

    I’m at the tourist centre in Boston the speakers tone can best be described as

    asked on September 29, 2017
  52. algebra

    Hi, I needed help in simplifying the following in steps please: a/a+a^2 keeping in mind that a is over a + a^2, not separate. Thank you.

    asked on July 4, 2017
  53. math urgent help

    If F (x)= 2x^2-5x-3 Determine f (-4) F (-4)=2 (-4)^2-5 (-4)-3 (I'm confused like do I use bedmas to solve this? ) F (-4)= 16-(-20)-3 F (-4)=36-3 F (-4)=33 Is that right?

    asked on June 19, 2017
  54. math

    Solve the system:4x+2y-13=0 and 3x=5y+26 by elimination. 3 (4x+2y-13=0) 12x+6y-26=0 4 (3x=5y+26) 12x=20y+104 I need to subtract since the signs are the same: 12x+6y-26=0 Since they don't match up, I'm having trouble subtracting them. I'm not sure what to

    asked on June 3, 2017
  55. Math

    Peter has 12 baseball cards he traded 1/3 of his cards with his cousin and 1/4 of his cards to tyrell how many cards did he keep

    asked on May 9, 2017
  56. Algebra 2

    If y=3 is a horizontal asymptote of a rational function, which must be true? lim x→ 3 f(x) = 0 lim x→ 0 f(x) = 3 **my answer lim x→ ∞ f(x) = 3 lim x→ 3 f(x) = ∞

    asked on May 9, 2017
  57. Math

    The perimeter of the base of the regular quadrilateral pyramid is P = 30 cm. Find the sum of all edges of this pyramid, if the perimeter of a lateral face is 27.5 cm

    asked on April 25, 2017
  58. Math

    What is the volume of the right prism with height h=14 cm, if the base of the prism is a triangle ∆ABC with side AB = 9 cm and altitude to that side h= 6 cm.

    asked on April 17, 2017
  59. Algebra

    Find the sum: 8 over sigma symbol, k=1 below the symbol and (-1)^k+1,5k to the right of it. Sorry the format is off, but I didnt know how else to type it in. Thank you.

    asked on November 30, 2016
  60. Physics

    You toss a ball from your window 8m above the groun. When the ball leaves your hand, ut is moving at 10m/s at an angle of 20 degree below the horizontal. How far horizontally from your window will the ball hit the ground? Ignore air resistance. Plz answer

    asked on October 27, 2016
  61. Chem

    Assuming 100% dissociation, calculate the freezing point and boiling point of 2.45 m Na2SO4(aq). Constants may be found here sites. google. com/site/chempendix/colligative.

    asked on October 19, 2016
  62. Chem

    A hypothetical molecule, X–Y, has a dipole moment of 1.76 D and a bond length of 151 pm. Calculate the percent ionic character of this molecule.

    asked on September 29, 2016
  63. MATH

    ABCD is a rectangle and line DX and DY and XY are drawn where X is on AB and Y is on BC.the area of the triangle BXY is 4 ,area of triangle AXD is 5 and area of triangle CYD is 3.determine the area of the triangle DXY.

    asked on August 12, 2016
  64. math ratios

    mark is growing tomatoes in his greenhouse and needs to fill them with fertiliser. The ratio of concentrated fertiliser to water is 1:6. If mark needs 21 litres of diluted fertiliser, how much concentrated fertiliser and water will he need?

    asked on July 15, 2016
  65. la

    How are the characters Jack and Algernon developed through the use of dialogue? How are these characters similar? How are they different? Support your answer with evidence.

    asked on May 26, 2016
  66. Chemistry

    aluminum hydroxide is decomposed to form aluminum oxide and water. if 2.23 moles of water are formed then how many of aluminum oxide are formed. how many grams of aluminum hydroxide must have been.decomposed?

    asked on May 25, 2016
  67. Math

    If log 20=P, express log 16 in terms of P. I actually don't want an answer. Is there possibly a hint I can get about an approach to the question? I thought it might have to do something with the common factors of 16 and 20, but I'm not sure.

    asked on May 19, 2016
  68. writing

    What should i do to improve my writing? give me suggestion please.

    asked on February 19, 2016
  69. Microeconomics

    Give Three Examples of how savings can be channeled into productive investment?

    asked on December 3, 2015
  70. Algebra

    he larger of two numbers is eight more than five times the smaller number. The sum of the two numbers is 74

    asked on October 20, 2015
  71. Calculus

    Find all solutions of the equation correct to three decimal places. (ex: 0.617 or -1.764) x^3=3x-3

    asked on September 24, 2015
  72. Calculus

    Which of the following is not a solution to the following equation? x^3-5x^2+4 = 0 x = 0 x = 4.83 x = -0.83 x = 1

    asked on September 24, 2015
  73. Calculus

    Please help simplify this expression: 2 log (base 4) ^9 - log (base 2) ^3 The answer should be log(base 2) ^3

    asked on August 4, 2015
  74. math

    you decide to dye your hair in various colors. If you die 1/3 of it blue , 1/4 pink and 1/4 of it black how much of your original hair is left?

    asked on June 1, 2015
  75. Math

    you have 1/2 of a brownie. You eat 3/4 of what you have , what fraction of the brownie did you eat?

    asked on May 31, 2015
  76. Statistics

    What is the lowest z-value for the highest 2% of observations on the standard normal distribution?

    asked on April 22, 2015
  77. math (urgent)

    A basketball or some stadium holds 20000 people. On average 140000 come to see the match. Average ticket price is $75. market research shows that if ticket price is decreased by $5 800 more people buy tickets. Find the price that will maximize revenue and

    asked on April 1, 2015
  78. Math

    A television company agrees to establish a community antenna in a new suburb at a charge of $5 each for 1000 subscribers or less.To encourage more subscribers,it is agreed to give a discount of $ 0.10 to each subscriber for every additional 10 subscribers

    asked on April 1, 2015
  79. chemistry

    H2So4+NH4OH Find the complete ionic equation Find the spectator ions Find the net ionic equation I feel like my answer is wrong i tried CIE: 2H+(aq)+So42-(aq)+2H4+(aq)---> 2NH4+(aq)+So42-(aq)+H2o (l)

    asked on February 24, 2015
  80. maths

    The area of a rectangular field is 96m2. The length of one side is 12m. The farmer needs to know the perimeter to find out how much fencing will be?

    asked on December 1, 2014
  81. MATHS

    Each Sunday the hymns to be sung are displayed on a hymn-board using numbered cards. The cards have the digits 0 to 9 on them. The hymn book has 750 hymns in it. Three different hymns are sung each service. a) What is the smallest number of cards the

    asked on November 1, 2014
  82. Physics

    An electron in an electron beam experiences a downward force of 2.0 x 10^-14 N while traveling in a magnetic field of 8.8 x 10 ^-2 T west. The charge on a proton is 1.60×10^−19. a) What is the magnitude of the velocity? Answer in units of m/s

    asked on October 16, 2014
  83. Physics

    A solenoid 74.5 cm long has 350 turns and a radius of 2.26 cm. If it carries a current of 1.69 A, find the magnetic field along the axis at its center. Answer in units of T

    asked on October 16, 2014
  84. physics

    In 10 seconds a car accelerates 3m/s^2 to 90m/s. How fast was the car going before it accelerated?

    asked on September 29, 2014
  85. hca311

    In general, what is the main difference in opinion of the House and the Senate? Whose viewpoint do you agree with? How do these viewpoints impact financial challenges facing health care leaders?

    asked on September 18, 2014
  86. english 125

    Support your views with at least one example of a dramatic text and one example of a poem

    asked on August 14, 2013
  87. General Math

    I am so confused can anyone help me understand which one is correct and why.... Beta is estimated as the slope of a regression line fit to pairs of periodic returns, (rx, ry), where: rx is the return for a market index such as the S&P 500 Index. rx is the

    asked on July 21, 2013
  88. URGENT Chemistry Question!

    This might be a silly question, but... Is 6-8 on the pH scale considered neutral? If so, 6.23 pH is neutral and 8.78 should be considered basic. Is this correct?

    asked on January 14, 2013
  89. math

    An empty bucket is put under two faucets. If one faucet is turned on alone the bucket fills in 6 minutes. If the other faucet is turned on alone the bucket fills in 4 minutes. If both are turned how many seconds will it take to fill the bucket?

    asked on January 7, 2013
  90. Coordination Chemistry

    A particular metal ion octahedral complex has the same number of unpaired electrons (non-zero) whether the complex uses weak or strong field ligands. List several fourth period transition metal ions that could have this behavior. Also, if someone could

    asked on December 1, 2012
  91. Algebra

    An investor invested a total of 2900 in two mutual funds. One fund earned a 9% profit the other earned a 5% profit. If the investors total profit was $217 how much was invested in each mutual fund.

    asked on November 4, 2012
  92. Algebra

    An investor invested a total of 2900 in two mutual funds. One fund earned a 9% profit the other earned a 5% profit. If the investors total profit was $217 how much was invested in each mutual fund.

    asked on November 4, 2012
  93. Chemistry! Test tomorrow, pls help !

    we're given the equation: C6H6(l)+Br2(l) --> C6H5Br(l)+HBr(g) you need to prepare 50.0g pf bromobenzene and you expect no more than a 75% yield. How much benzene should you begin with if the yield is 75%. i know that % yield = (actual/theoretical) * 100 %

    asked on October 4, 2012
  94. Chemistry

    The combustion of benzoic acid releases 26.38kJ/g and is often used to calibrate a bomb calorimeter. the combustion of 1.045 g of benzoic acid caused the temperature of the calorimeter to rise by 5.985C. Useing the same calorimeter, a sample of 0.876g of

    asked on October 4, 2012
  95. Gloabl History

    What were the cause of the Korean War?

    asked on February 8, 2012
  96. Math

    From the top of a cliff 120 m above the water, the angle of depression of a boat on the water is 18 degrees. How far is the boat from the cliff?

    asked on December 8, 2011
  97. math- factoring

    factor completely 1) 8x^3 + 27y^3 2) u^3 + 125v^3

    asked on November 28, 2011
  98. math

    the radius of a nickel is 1centermeter. if 10 nickles are placed in a row, how long will the row be?

    asked on September 28, 2011
  99. physics please help

    Three point charges, 5.6E-6, 2.2E-6, and -3.0E-6, lie along the x-axis at 0.00 m, 0.031 m, and 0.059 m. What is the force exerted on q1 by the other two charges? What is the force exerted on q2 by the other forces? And what is the force exerted on q3 by

    asked on March 22, 2011
  100. Science

    Officials have found certain amounts of hazardous Fe3+ ions in the town of Scienceville's water supply. Using your knowledge of chemical reactions, suggest a way to eliminate this ion from Sciencevills's drinking water supply. Provide a thorough

    asked on February 27, 2011


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