Most popular questions and responses by Gina
  1. Geometry/Trig

    In triangle ABC, A is a right angle, and m b=45 degrees. What is the length of BC? If your answer is not an integer, leave it in simplest radical form. a. 16 ft b. 16 sq 2 ft c. 16 sq 3 ft d. 32 ft I'm really confused as to how to do this... Could someone

    asked on May 3, 2016
  2. science

    use water displacement to find the volume of four marbles in ml

    asked on August 30, 2008
  3. English

    I have to write a research proposal for english! Here is what's written: Review your final research proposal draft one last time. Make sure that your topic focuses on some cultural aspect of one of the countries (Turkey, Armenia, Iraq, India, or Sri

    asked on May 19, 2017
  4. Chemistry

    A 22.5 gram sample of ammonium carbonate contains ? mol of ammonium ions?

    asked on December 8, 2010
  5. English

    In Romeo and Juliet, which of the following illustrates Shakespeare's use of comic relief? A) A servant explains to Capulet that cooks should lick their own fingers. B) Capulet believes that Juliet is dead when she is really only sleeping. C) "Honest good

    asked on April 3, 2016
  6. Science

    Radioactive carbon-14 dating has determined that a fossil is 5.7 x 10 to the third power years old. What is the total amount of the original Carbon-14 still present in the fossil?

    asked on March 24, 2010
  7. math

    How much money must be invested at 6.3 % simple interest to earn $250 in interest each month?

    asked on April 17, 2015
  8. Chemistry

    1.) Explain the similarity between Mg(OH)2 and Zn(OH)2 in particular why would any insoluble hydroxide tend to dissolve in an acidic solution? Are they both bases? 2.) Explain the difference in particular how does Mg^+2 appear to form complex ions with

    asked on March 20, 2015
  9. Chemistry

    When 6.25grams of pure iron are allowed to react with oxygen, a black oxide forms. If the products weighs 8.15g, what is empirical formula of the oxide?

    asked on October 22, 2014
  10. Math- probability

    Suppose 80% of kids who visit a doctor have a fever, and 30% of kids with a fever have sore throats. What's the probability that a kid who goes to the doctor has a fever and a sore throat? Round to three decimal places.

    asked on July 27, 2013
  11. science

    is paper towel a conductor or insulator? How good does it conduct or insulate. insulator. Dry paper is a good insulator.

    asked on December 10, 2006
  12. physics

    A 850-kg race car can drive around an unbanked turn at a maximum speed of 61 m/s without slipping. The turn has a radius of 160 m. Air flowing over the car's wing exerts a downward-pointing force (called the downforce) of 11000 N on the car. (a) What is

    asked on February 15, 2011
  13. physics1

    A 850-kg race car can drive around an unbanked turn at a maximum speed of 61 m/s without slipping. The turn has a radius of 160 m. Air flowing over the car's wing exerts a downward-pointing force (called the downforce) of 11000 N on the car. (a) What is

    asked on February 14, 2011
  14. ghemistry

    which indicator is more reliable in the titration of H3PO4 with NaOH using methyl orange and phenolphthalein as indicators

    asked on September 26, 2010

    A student combusted 0.500g of purified aluminum power with excess oxygen in an oxygen atmosphere according to the reaction, 4Al(s) + 3O2(g)= 2Al2O3(s) A) What is the limiting reactant? B) How many moles of Al were used? C) How many moles of Al2O3 would

    asked on October 29, 2014
  16. 8th grade science

    Q: A person living in North America will be able to see 15 lunar eclipses in the 2010-2020 decade. In the same time period, only two solar eclipses can be observed in North America. why will more lunar eclipses than solar eclipses be visible from North

    asked on November 13, 2013
  17. math

    A bathroom measures 250cm by 175cm.Calculate the side of the largest square tile that can be used to tile the floor without cutting.

    asked on July 6, 2014
  18. Chemistry

    A student reacted 0.500g of Pb(NO3)2 with 0.750g of KI according to the reaction, Pb(NO3)2(aq) + 2KI(aq)=PbI2(s) + 2KNO3(aq) A) How many moles of Pb(NO3)2 were used? B) How many moles of KI were used? C) How many moles of PbI2 would form, based on the

    asked on October 29, 2014
  19. chemistry

    For the reaction below, Kp = 1.16 at 800.°C. CaCO3(s) CaO(s) + CO2(g) If a 21.7-g sample of CaCO3 is put into a 10.6 L container and heated to 800°C, what percentage by mass of the CaCO3 will react to reach equilibrium?

    asked on February 3, 2013
  20. physics

    A single conservative force acts on a 5.00 kg particle. The equation Fx = (2x + 4) N describes this force, where x is in meters. As the particle moves along the x axis from x = 1.40 m to x = 7.00 m, calculate the following.

    asked on February 23, 2010
  21. Calculus

    Find the degree 3 Taylor polynomial approximation to the function f(x)=8ln(sec(x)) about the point a=0 .

    asked on November 11, 2014
  22. English!!

    18. The author of “Hip­Hop Planet” uses the image of the candy box with a ribbon tied around it to describe the highways of Dayton, Ohio because (1 point) it shows how quickly hip­hop music commercialized. the character of Henry really likes candy.

    asked on December 13, 2016


    asked on October 19, 2015
  24. phys

    A plane takes off at St. Louis, flies straight to Denver, and then returns the same way. The plan flies at the same speed with respect to the ground during the flight, and there are no head winds or tail winds. Since the earth revolves around its axis once

    asked on January 4, 2009
  25. Statistics

    In​ Marissa's calculus​ course, attendance counts for 20​% of the​ grade, quizzes count for 15​% of the​ grade, exams count for 45​% of the​ grade, and the final exam counts for 20​% of the grade. Marissa had a 100​% average for​

    asked on July 23, 2018
  26. chemistry

    A gas has a volume of 590 mL At a temperature of -55.0 degrees celsius. What volume will the gas occupy at 30.0 degrees celsius? show your work. I'm just confused as to how to start this and the steps required. I'm not asking for an answer, but rather some

    asked on March 8, 2018
  27. Physics

    You serve a tennis ball from a height of 1.8 m above the ground. The ball leaves your racket with a speed of 19.4 m/s at an angle of 7.28° above the horizontal. The horizontal distance from the court's baseline to the net is 11.83 m, and the net is 1.07 m

    asked on September 10, 2010
  28. English

    What is the meaning of this poem? A single flower he sent me, since we met. All tenderly his messenger he chose; Deep-hearted, pure, with scented dew still wet-- One perfect rose. I knew the language of the floweret; "My fragile leaves," it said, "his

    asked on November 9, 2006
  29. Chemistry

    About 50% of U.S. and most Canadian sulfur is produced by the Claus process, in which sulfur is obtained from the H2S(g) that occurs in natural gas deposits or is produced when sulfur is removed from petroleum. The reactions are described by the equations

    asked on February 2, 2014
  30. Physics

    A pilot of mass 65 kg in a jet aircraft makes a complete vertical circle in mid-air. The vertical circle has a radius of 1.70 km at a constant speed of 215 m/s. Determine the force of the seat on the pilot at (a) the bottom of the loop and (b) the top of

    asked on October 28, 2009
  31. Physics

    A rabbit runs in a garden such that the x- and y-components of its displacement as function of times are given by x(t) = −0.44t2 − 6.0t + 73 and y(t)= 0.35t2 + 8.3t + 34. (Both x and y are in meters and t is in seconds.) (a) Calculate the rabbit's

    asked on September 10, 2010
  32. Physics

    A man with a mass of 65 kg stands up in a 64-kg canoe of length 4.0 m floating on water. He walks from a point 0.75 m from the back of the canoe to a point 0.75 m from the front of the canoe. Assume negligible friction between the canoe and the water. How

    asked on October 14, 2010
  33. Physics 1

    A man opens a 1.14-m wide door by pushing on it with a force of 49.5 N directed perpendicular to its surface. (a) What magnitude torque does he apply about an axis through the hinges if the force is applied at the center of the door? N · m (b) What

    asked on March 6, 2015
  34. physics (centripetal acceleration)

    The second hand and the minute hand on one type of clock are the same length. Find the ratio (ac,second/ac,minute) of the centripetal accelerations of the tips of the second hand and the minute hand.

    asked on February 14, 2011
  35. Physics

    A golf ball is hit with an initial angle of 30.5° with respect to the horizontal and an initial velocity of 81.9 mph. It lands a distance of 86.8 m away from where it was hit. By how much did the effects of wind resistance, spin, and so forth reduce the

    asked on September 10, 2010
  36. algebra

    The two smaller angles of a right triangle have equal measures. Find the measure of the smaller two angles, and the measure of the largest angle, in degrees.

    asked on October 23, 2016
  37. stats

    There are four major political parties in the country Treon. A public research group is interested in finding out whether there is any relationship between the party that is supported by a citizen of Treon and that citizen's socio-economic status. For the

    asked on October 7, 2010
  38. Math

    A curve is such that dy/dx=2-8(3x+4)^-0.5 The curve intersects the y-axis where y=4/3 Find the equation of the cure.

    asked on January 19, 2018
  39. Math

    Line a intersects line b, forming angles of 135 degrees and 45 degrees. A third line,line c, is perpendicular to line a and forms triangle ABC. What is the measure of the angle between lines b and c? a. 35 degrees b. 45 degrees c. 90 degrees d. 135 degrees

    asked on July 14, 2016
  40. Spanish

    In the following sentence, which direct object requires the personal a? (I don't really get this question, please help!) a. el tren b. el monumento c. la amiga de mi mama d. el barco Right dow I think that it is el barco but I'm not sure...

    asked on May 2, 2016
  41. psychology statistics for behavioral sciences

    A multiple-choice test has 48 questions, each with four response choices. If a student is simply guessing at the answers, a. What is the probability of guessing correctly for any question? b. On average, how many questions would a student get correct for

    asked on March 20, 2013
  42. Math

    The probability of drawing a peppermint candy out of a jar of 25 candies is 1/5. How many more peppermint candies should be added to the jar in order to increase the probability of drawing a peppermint candy to 1/3? (A) 5 (B) 10 (C) 15 (D) 30

    asked on July 18, 2017
  43. Physics

    A horse draws a sled horizontally across a snow-covered field. The coefficient of friction between the sled and the snow is 0.195, and the mass of the sled, including the load, is 209.8 kg. If the horse moves the sled at a constant speed of 1.730 m/s, what

    asked on September 21, 2010
  44. Physical Science

    From a general relativistic point of view, a person on the ground floor of a skyscraper ages...faster or slower than a person on the top floor? With the faster movement of the rotation of the earth at the higher altitude, the person on the ground floor

    asked on March 29, 2007
  45. physics

    rank the average gravitational force from greatest to least between (a) sun and mars (b)sun and moon (c) sun and earth include an explanation PLEASE!!!!

    asked on January 3, 2014
  46. English

    How does Erik (the phantom) from The Phantom of the Opera show romance? i already mentioned about his relationship with Christine, but i need two more points.

    asked on April 6, 2015
  47. Physics

    Two baseballs are thrown off the top of a building that is 7.24 m high. Both are thrown with initial speed of 63.3 mph. Ball 1 is thrown horizontally, and ball 2 is thrown straight down. What is the difference in the speeds of the two balls when they touch

    asked on September 21, 2010
  48. Algebra Please Help

    Math Word problem with factoring...HELP!!! This questions has me stumped!? I have been working on it for days... A 10ft-by-15ft pool was installed in your backyard. You have $3000 left that you would like to spend on surrounding the pool with a patio,

    asked on May 6, 2011
  49. Physics circular motion

    The earth rotates once per day about an axis passing through the north and south poles, an axis that is perpendicular to the plane of the equator. Assuming the earth is a sphere with a radius of 6.38 x 106 m, determine the centripetal acceleration of a

    asked on February 15, 2011
  50. chemistry

    The boiling point of water at 735mmHg is 99.073C. What mass of NaCl should be added to 3.11kg water to increase the boiling point to 100.000C. Kb for water = 0.510K kg mol-1.

    asked on October 11, 2010

    A couple of astronauts agree to rendezvous in space after hours. Their plan is to let gravity bring them together. She has a mass of 66.0 kg and he a mass of 72.0 kg, and they start from rest 25.0 m apart. A)Find his initial acceleration. i put 7.68*

    asked on February 16, 2012
  52. chemistry

    Which if the following statements concerning complex ion Co(en)2Cl2+ is true? en=NH2CH2CHNH2 A)the geometric isomers of the complex ion have identical chemical properties B) the complex ion exhibits cis an dtrans geometric isomers but no optical isomers

    asked on April 21, 2007
  53. physics??

    The earth rotates once per day about an axis passing through the north and south poles, an axis that is perpendicular to the plane of the equator. Assuming the earth is a sphere with a radius of 6.38 x 106 m, determine the centripetal acceleration of a

    asked on February 14, 2011
  54. math

    If a ball is dropped from from 288 ft above the ground, how long does it take to reach ground level?

    asked on August 26, 2010
  55. Math

    The best free throw shooter on a basketball team has a 60% chance of making the 1st shot when shooting 2 free throws. If he makes the 1st shot, he has an 80% chance of making the 2nd. If he misses the 1st shot, he only has a 40% chance of making the 2nd

    asked on July 28, 2015
  56. Math

    A living room measures 450cm by 330cm.Find the dimension of the largest tile that can be used to tile the floor without cutting.

    asked on July 6, 2014
  57. Math Algebra , high school

    A biologist has three salt solutions: some 5% solution, some 15% solution, and some 25% solution. She needs to mix some of each to get 50 liters of 20% solution. She wants to us twice as much of the 5% solution as the 15% solution. How much of each

    asked on December 13, 2012
  58. Solving Geometry Problem - PLEASE HELP - Test tom!

    A cone has a slant height of 10 centimeters and lateral area of 60pi square centimeters. What is the volume of the sphere with a radius equal to that of a cone? -we tried solving and got 4.37 or so for the radius and we couldn't get any further than that

    asked on April 19, 2011

    A block is hung by a string from the inside roof of a van. When the van goes straight ahead at a speed of 27.8 m/s, the block hangs vertically down. But when the van maintains this same speed around an unbanked curve (radius = 196 m), the block swings

    asked on February 15, 2011
  60. Chemistry

    A student dissolves 2.57 grams of iodine [molar mass= 257]in 10.0 grams of carbon tetrachloride [kb = 5.03C/m]. The normal boiling point of carbon tetrachloride is approximately 77degreesC. What is the approximate boiling point of the solution above?

    asked on January 9, 2011
  61. chemistry

    need answer to the following: for each molecular compounds, write the name corresponding name or write chemical formula to: A)nitrogen pentasulfide B)diphosphorus pentasulfide C) AS2S3 D)PBr5

    asked on March 11, 2010
  62. statistics

    John drives to work each morning and the trip takes an average of µ = 38 minutes. The distribution of driving times is approximately normal with a standard deviation of ó = 5 minutes. For a randomly selected morning, what is the probability that John’s

    asked on March 4, 2012
  63. Physics

    What is the centripetal acceleration of the Moon? The period of the Moon's orbit about the Earth is 27.3 days, measured with respect to the fixed stars. The radius of the Moon's orbit is RM = 3.85 · 108 m.

    asked on October 14, 2010
  64. finance

    cpu company currently pays a divdend of $2.50. dividends are expected to increase at the rate of $.25 per share for the next several years. determine the current rate of CPU's common stock to an investor who expects to be able to sell the stock for $35 per

    asked on October 3, 2010
  65. Quick Math

    Is a dozen dozen equals to 24? wouldn't a dozen dozen be 144? and 144 is a gross. a dozen is 12 a dozen is 12 so isnt that 24? When you say double double such as in coffee. You want two milk and two sugar. That's four. So wouldnt dozen dozen be 12 and 12?

    asked on December 5, 2006
  66. Physics - Height of ball launch

    A solid ball of mass m and radius r rolls without slipping through a loop of radius R, as shown in the figure. From what height h should the ball be launched in order to make it through the loop without falling off the track? (Use any variable or symbol

    asked on October 21, 2010
  67. Physics

    A solid cylinder is mounted above the ground with its axis of rotation oriented horizontally. A rope is wound around the cylinder and its free end is attached to a block of mass 54.0 kg that rests on a platform. The cylinder has a mass of 265 kg and a

    asked on April 10, 2014
  68. statistics please

    a basketball scout randomly selected 144 players and timed howlong eah player took to perform a certain drill. the times in thissample were distributed with a mean of 8 minutes. the populationstandard deviation was known to be 3 minutes. (a) find the

    asked on December 15, 2012
  69. math

    a container holds 250 mL. How many liters does it hold

    asked on September 22, 2011
  70. Grade school science

    What will happen if you rub a acetate strip and a paper towel together?(static electricity) Which of the two is a conductor and insulator or are they both the same. What happens when you rub two conductors together and what happed when you rub two

    asked on December 10, 2006
  71. Math

    ^=exponents /= divide So I am not sure how to do this. It is an example in my book but I still don't get it. Can you work through ti so I can do my real work. (-1^2+-1^-2)^-1 (-1^2+-1^-2)^-1 = First, do work within the parentheses. -1*-1 = 1 and -1-2 =

    asked on November 23, 2006
  72. Quick Math

    I still have a question. My first one has been answered(I, but I am going to write it down anyways, incase it realtes to the first quesion. (I)What is the cost of s dozen dozen apples at half a dozen dimes a dozen? (II)(This one I don't understand) What is

    asked on December 5, 2006
  73. physics

    Bob fires a cannon horizontally off a 125 meter cliff.the cannonball leaves the cannon traveling at 144 meters per second. How far from the cliff will the cannonball land?

    asked on November 10, 2014
  74. chemistry

    For the reaction below, Kp = 1.16 at 800.°C. CaCO3(s) CaO(s) + CO2(g) If a 21.7-g sample of CaCO3 is put into a 10.6 L container and heated to 800°C, what percentage by mass of the CaCO3 will react to reach equilibrium?

    asked on February 3, 2013
  75. Algebra II math high school

    To get the necessary funds for a planned expansion, a small company took out three loans totaling $25,000. The company was able to borrow some money at 8%. It borrowed $2000 more than half the amount of the 8% loan at 10% and the rest at 9%. The total

    asked on December 13, 2012
  76. Physics

    Two cars are moving. The first car has twice the mass of the second car but only half as much kinetic energy. When both cars increase their speed by 4.54 m/s, they then have the same kinetic energy. Calculate the original speeds of the two cars. first car

    asked on September 21, 2010
  77. Physics

    The position of an object as a function of time is given as x = At3 + Bt2 + Ct + D. The constants are A = 3.2 m/s3, B = 1.8 m/s2, C = −4.2 m/s, and D = 7 m. At what time(s) is the object at rest?

    asked on September 10, 2010
  78. math

    Express 39% as a decimal.

    asked on January 30, 2008

    which of the following coordination compounds will most likely form a precipitate when treated with an aquesous solution of silver(l) nitrate? A) [Cr(NH3)2CL3] B) [Cr(NH3)6]Cl3 C) [Cr(NH3)Cl]SO4 D) Na3[Cr(CN)6] E) Na[CrCl6] i think its either a or b but i

    asked on April 21, 2007
  80. Thesis Statement

    What is an effective way to start a thesis statement without using, I think... I think the world is a better place. The world is a better place. Is the world a better place? No better place could the world be. Shakespeare could have not found a better

    asked on October 8, 2006
  81. Biology

    1.A white flowered plants is crossed with a plant that is heterozygous for the trait. What percentage of he offspring will have purple flowers? 2.Two plants, both heterozygous for he gene that controls flower color are crossed. What percentage of their

    asked on September 19, 2015
  82. algebra

    Do you like roller coasters? If you were asked to design a roller coaster, what would it look like? Would it have steep hills? Would you design the tracks to go upside down? Did you know that polynomial equations are used by the structural engineers who

    asked on April 16, 2013
  83. math

    how do i solve for x when x = log(32.5)? here's my work: log x = y 10^y = x then, x = log (32.5) 10^x = 32.5 10^x = 17/2 this is where i get stuck... i don't know how to get rid of the bases... can some one please teach me how? thank you! :)

    asked on September 11, 2012
  84. financial planning problems

    During a job interview,Pam Thompson is offered a salary of 28,000.The company gives annual raises of 6 percent. What would be Pam's salary during her fifth year on the job?

    asked on April 24, 2012
  85. Chemistry

    Given the following information: Ag^+(aq) + Cl^-(aq)AgCl(s) Keq=1.8x10^-1 Ag^+(aq) + 2NH3(aq)Ag(NH3)2^+(aq) Keq=8.2x10^3 Explain why the AgCl(s) dissolved when NH3 was added to the test tube.

    asked on April 3, 2011
  86. Physics

    Assuming that the Earth is spherical and recalling that latitudes range from 0° at the Equator to 90° N at the North Pole, how far apart, measured on the Earth's surface, are Copenhagen (55.67° N latitude), and Rome (41.90° N latitude)? The two cities

    asked on October 14, 2010
  87. Physics

    A particle of mass m is subjected to a force acting in the x-direction. Fx = (3.2 + 0.55x) N. Find the work done by the force as the particle moves from x = 0 to x = 4.5 m. 1

    asked on September 21, 2010
  88. Algebra

    Use the geometric sequence of numbers 1, 1/3, 1/9, 1/27… to find the following: Using the formula for the sum of the first n terms of a geometric series, what is the sum of the first 10 terms? Carry all calculations to 6 decimals on all assignments.

    asked on October 29, 2006
  89. Science

    What is the scentific formula for Sodium Thiosulphate? What is the mass of a 30 N rock in the school yard? Sodium thiosulfate is Na2S2O3.

    asked on October 10, 2006
  90. Algebra

    If 4x^2+20x+r=(2x+s)^2 for all values of x, what is the value of r-s? Can you please help me?

    asked on July 12, 2016

    Which of the following is true about the reaction between sodium bromide and silver sulfate? 1. No reaction 2. Total ionic equation is identical to the net ionic equation 3. Sodium ions and sulfate ions are present in the toal ionic equation but not in the

    asked on May 11, 2011

    In an automatic clothes drier, a hollow cylinder moves the clothes on a vertical circle (radius r = 0.364 m), as the drawing shows. The appliance is designed so that the clothes tumble gently as they dry. This means that when a piece of clothing reaches an

    asked on February 15, 2011
  93. WWII

    What types of ships did the British and German use in WWII? U- boats = British Dreadnaghts = German ??? I'm not quite sure :S

    asked on December 18, 2007
  94. CHemistry

    what is the molecular geometry for the following elements A) SeB4 B) carbonate ion C) XeF5+ D) ammonium ion E) phosphorus trichloride can someone tell me if im right with my anwsers and if im wrong what is the correct anwser? a-trigonal bipyramid b-

    asked on April 22, 2007
  95. English

    If you could come in on Sunday,that would be grest. How many independent and subordinate clauses

    asked on January 27, 2017
  96. Science

    Kendell wants to determine if there is a trend in air temperature changes during April. Which procedure should he follow?

    asked on October 16, 2015
  97. Geometry

    You want to frame a picture that is 5 inches by 7 inches with a 1 inch wide frame. What is perimeter of outside edge of the frame.?

    asked on August 21, 2012
  98. physics??

    Two newly discovered planets follow circular orbits around a star in a distant part of the galaxy. The orbital speeds of the planets are determined to be 41.3 km/s and 52.7 km/s. The slower planet's orbital period is 7.74 years. (a) What is the mass of the

    asked on February 15, 2011
  99. Physics

    A solid ball of mass m and radius r rolls without slipping through a loop of radius R, as shown in the figure. From what height h should the ball be launched in order to make it through the loop without falling off the track? (Use any variable or symbol

    asked on October 22, 2010
  100. Physics

    A small blimp is used for advertising purposes at a football game. It has a mass of 93.0 kg and is attached by a towrope to a truck on the ground. The towrope makes an angle of 53.3° downward from the horizontal, and the blimp hovers at a constant height

    asked on September 21, 2010


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