Popular questions and responses by Lola
  1. geometry

    A rectangular box with a square base contains 24 cubic feet. if the height of the box is 18 inches, how many feet ae there in each side of the base? a. 4 b. 2 c. (2 square root of 3)/3 d. square root of 3 / 2 e. square root of 3

    asked on January 14, 2011

    which of the follwing is best definition of science? A.a body of knwolege gathered throgh experiments. B.a process of accidental discorery. C. a search for answers to questions about the natural world. D. a method of asking testable questions based on

    asked on January 19, 2012
  3. physics

    An ideal gas has a pressure of 2.5 atm, a volume of 1.0 L at a temperature of 30.°C. How many molecules are there in the gas? 6.1 × 1023 6.0 × 1022 2.4 × 1022 2.3 × 1023

    asked on February 4, 2014
  4. physics

    A spiral spring extends from length 10.01m to 10.00cm when a force of 20N is applied on it. Calculate the constant force

    asked on September 19, 2017

    Which of the following is the best definition of science.

    asked on January 19, 2012
  6. math

    In how many positive four-digit integers that are not multiples of 1111 do the digits form an arithmetic sequence? (The digits must form an arithmetic sequence, in order. For example, the number 5137 does not count.)

    asked on May 26, 2018
  7. Math

    ∆ABC has the points A(1, 7), B(-2, 2), and C(4, 2) as its vertices. The measure of the longest side of ∆ABC is units. ∆ABC is triangle. If ∆ABD is formed with the point D(1, 2) as its third vertex, then ∆ABD is triangle. The length of side AD is

    asked on June 17, 2016
  8. Chemistry

    what is the freezing point of an aqueous solution that boils at 102.1 C? Kf=1.86 Kb=0.512 102.1-100.0=2.1 2.1/0.512=4.10 4.10*1.86=7.62 C 7.62 C Is this correct?

    asked on May 22, 2015
  9. History

    Why is urbanization associated with the industrial revolution? The expansion of family farms refocused the nation on agriculture •• The concentration of factories in cities brought job opportunities Settlers expanded the frontier west of the

    asked on November 28, 2016
  10. physics

    A 50-kg box is being pushed a distance of 6.4 m across the floor by a force P with arrow whose magnitude is 154 N. The force P with arrow is parallel to the displacement of the box. The coefficient of kinetic friction is 0.24. Determine the work done on

    asked on June 21, 2015
  11. physics

    A force of 40N is applied at the end of a wire 4m long and it produces an extension of 0.24mm.if the diameter of the wire is 2.0mm.calculate the stress and strain of the wire

    asked on September 19, 2017
  12. maths

    Six of the classes at your school are going to the pool for a swimming party. That means 125 students need to get on buses and each bus hold 48 students. How many buses will the school need?

    asked on May 9, 2017
  13. geography

    True or false: Migration doesn’t really affect population—it’s just a shifting of people from one place to another.

    asked on November 5, 2011
  14. Algebra 2

    Use summation notation to write the series 2+4+6+8 for 10 term in each of these images, the lower limit of the summation notation is either n=1, or n=0

    asked on April 13, 2016
  15. Organic Chemistry

    Calculate the partition coefficient of caffeine in water/methylene chloride from the following data: 10.3 g/100 mL for methylene chloride and 2.04 g/100 mL for water. Using the same data a student follows our procedure and extracts the caffeine using 3

    asked on October 31, 2014
  16. chemistry

    How many moles of chloride ions are present in 18.4g of CaCl2? I don't know how to set this up...

    asked on August 4, 2012
  17. math

    What are the coordinates of the points where the graphs of f(x)=x^3-x^2+x+1 and g(x)=x^3+x^2+x-1 intersect? Give your answer as a list of points separated by semicolons. (So "(1,-3); (2,3); (5,-7)" is a valid answer format.)

    asked on April 12, 2016
  18. math

    This square sheet of paper P QRS measures 40 cm × 40 cm. The top-left corner P is folded down to meet M, the midpoint of the bottom side RS, making a single straight crease. Where does the crease cross QR, the right-hand side of the sheet of paper?

    asked on April 20, 2019
  19. math

    1. Provide two examples of a function: (1) as a table of values and (2) as a graph. Explain the definition of a function. Be sure to include mathematical vocabulary in your response. 2. In a paragraph, explain what the domain and range is for the function

    asked on April 29, 2019
  20. science

    Your neighbor has fertilized her lawn. Several weeks later, she is alarmed to see that the surface of her ornamental pond, which sits at the bottom of the sloping lawn, is covered with a green layer of algae. (a) Suggest a feasible explanation for the

    asked on September 9, 2012
  21. chemistry

    when aqueous solutions of sodium carbonate and manganese(V) chloride are mixed, a precipitate forms. The precipitate is a compound containing manganese. I have to write the chemical, complete ionic, and net ionic equations for it.

    asked on February 16, 2010
  22. Maths

    Tom is putting cartons of ice-cream in one of the freezers. There are 13 boxes and each box contains 24 cartons. How many cartons of ice-cream are there in total? He then unpacks 192 packs of frozen peas from 8 boxes. How many packs of frozen peas were in

    asked on February 13, 2020
  23. math

    Isabel pumped 7 gallons of water into her pool each minute for 63 minutes. What was the total change in the amount of water in the pool.

    asked on December 18, 2019
  24. algebra

    Luke is tiling a square patio in his backyard. He has 121 square-shaped tiles that will cover the entire patio. The maximum number of tiles that Luke can fit along one side of the patio is

    asked on July 17, 2017
  25. statistics

    What are the chances that a person who is murdered actually knew the murderer? About 64% of people who are murdered actually knew the murderer. Suppose that a detective file in New Orleans has 63 unsolved murders. What is the probability that A )at least

    asked on March 23, 2012
  26. Physics

    Pluto’s minimum orbital velocity is 3.7 km/s. What are the values for vP (perihelion velocity) and vA (aphelion velocity)?

    asked on November 30, 2010
  27. Chemistry

    Chromium (II) nitrate forms a hydrate that is 40.50% water by mass. What is its chemical formula? I just need to figure out how to do it!

    asked on April 1, 2010
  28. math

    You have a new mobile phone. The phone costs $140 and then you pay for a one year contract at $15 per month. How much do you pay in total at the end of the year? $

    asked on February 14, 2020
  29. chemistry

    The reaction between sodium hydroxide and hydrobromic acid is represented in the equation below: OH- + H+ -> H2O A 62.5 mL sample of 1.86 M NaOH at 22.5 deg Celsius was mixed with 62.5 mL sample of 1.86 M of HBr at 22.5 deg Celsius in a coffee cup

    asked on November 2, 2014
  30. Physics

    In a phsics experiment, a 1.3 kg dynamics cart is placed on a ramp inclined at 25 degrees to the horizontal. the cart is initially at rest but is then pulled up the ramp with a force sensor. the force sensor exerts a force on the cart parallel to the ramp.

    asked on October 1, 2013
  31. Math

    An apprentice Carpenter has designed a wooden coffee table. he expects to sell 25 such tables for 95$ each at an upcoming artisan market. by conducting a survey, he determines that for each $2 reduction in the price of the table, he will likely gain three

    asked on May 14, 2013
  32. physics

    A bullet with mass 0.40 kg is fired with an initial velocity of 400 m/s from a gun with mass 5.0 kg. The speed of the recoil of the gun is

    asked on July 28, 2010
  33. chemistry

    Determine the number of molecules of ethanol (C2H5OH) in 47.0 g. Can someone explain to me how to do this?

    asked on March 14, 2010
  34. Statistics

    Jim Mead is a veterinarian who visits a Vermont farm to examine prize bulls. In order to examine a bull, Jim first gives the animal a tranquilizer shot. The effect of the shot is supposed to last an average of 65 minutes, and it usually does. However, Jim

    asked on May 9, 2019
  35. Science

    A species of rabbit lives in a meadow where grass plants are readily available during summer months. The rabbits do not stray far from the meadow because the plants supply food and protection from predators. One summer, a fire destroys the plants in the

    asked on March 28, 2018
  36. Criminal Investigation

    Safety precautions that should be observed in searching for a booby trap? What significance does a fire’s point of origin have regarding the investigation of a suspected arson fire? Discuss and compare the relationship between fire and police departments

    asked on May 7, 2016
  37. Art

    What message was the designer of this hamburger ad hoping to send with the catchphrase homestyle? This burger will allow you to experience new exotic tastes. This burger will taste as good as one you would make with the family. this burger is your best bet

    asked on May 2, 2016
  38. math

    A length of ribbon is 3 1/2 yd long. How many pieces 1 5/9 yd long can Joy cut from the ribbon? 1 2 3 4 Which number is equivalent to 0.45? 1/45 5/11 4/5 1/4 What is 3.56 x 10 *5 in standard notation? 356,000 3,560,000 0.00356 0.0000356 Ms. Johnson's class

    asked on October 5, 2015
  39. geography

    Which of the following is FALSE about population growth? a. It causes the economy to shrink. b. It causes the economy to grow. c. It can result from improved nutrition and basic health. d. Europe is experiencing it at a lessened rate.

    asked on November 5, 2011
  40. trigoo


    asked on May 8, 2010
  41. math

    Each coach has 50 seats and there are 1030 supporters. How many coaches are needed to take all the supporters?

    asked on February 14, 2020
  42. Math

    A,B & C are the points (-8, -4), (-2, 6) and (4, -4) respectively. show that ABC is an isosceles triangle. find the perimeter of the triangle

    asked on November 6, 2019
  43. Math

    A research team conducted a study showing that approximately 10% of all businessmen who wear ties wear them so tightly that they actually reduce blood flow to the brain, diminishing cerebral functions. At a board meeting of 15 businessmen, all of whom wear

    asked on February 24, 2019
  44. math

    12, −9, 6, −3, .. whats the arithmetic function?

    asked on November 10, 2016
  45. Biology

    Describe the traits that distinguish animals from other organisms Explain the diversity of invertebrates, chordates, and primates using the theory of evolution Describe the structures and body systems of animals that allow them to maintain homeostasis

    asked on May 16, 2016
  46. Math

    Is -49 rational or irrational

    asked on April 21, 2016
  47. physics

    A ladder (ℓL = 7.50 m) of weight WL = 350 N leans against a smooth vertical wall. The term "smooth" means that the wall can exert only a normal force directed perpendicular to the wall and cannot exert a frictional force parallel to it. A firefighter,

    asked on July 2, 2015
  48. physics

    I have no idea. Please help. Thank you. The drawing shows a sulfur dioxide molecule. It consists of two oxygen atoms and a sulfur atom. A sulfur atom is twice as massive as an oxygen atom. Using this information and the data provided in the drawing, find

    asked on June 25, 2015
  49. physics

    I have no way to solve this question. help me please The drawing shows a sulfur dioxide molecule. It consists of two oxygen atoms and a sulfur atom. A sulfur atom is twice as massive as an oxygen atom. Using this information and the data provided in the

    asked on June 24, 2015
  50. Chemistry

    Determine the entropy change when 1.80 mol of HBr(g) condenses at atmospheric pressure? I got that DeltaS fus = 12.922J/(k*mol) Delta S Vapour = 93.475J/(K*mol) the only thing I don't get is the entropy change when 1.80 mol of HBr(g) condenses at

    asked on May 27, 2015
  51. Physics 12

    A flag of mass 2.5 kg is supported by a single rope as show in figure 13. a strong horizontal wind exerts a force of 12 N on the flag. Calculate the tension in the rope and the angel, the rope makes with the horizontal. here is the figure:

    asked on October 1, 2013
  52. Science - Chemistry!!!

    A lead bullet with a mass of 8.50 g traveling at 4.80 x 102 m/s strikes a 2.00 kg block of wood and is embedded in it. Both the bullet and the block are initially at 25.0°C. Assume that no heat is lost to the surroundings and that all the kinetic energy

    asked on October 23, 2012
  53. calculus?

    I want a rectanglular pen with area = 50 square feet and to save on fencing I will build it next to the garage. How should I design it so I use the least amount of fence-only 3 sides will be needed next to the garage. How can I figure out that I have found

    asked on July 14, 2012
  54. Finance

    A 20-year, $1,000 par value bond has a 9% annual coupon. The bond currently sells for $925. If the yield to maturity remains at its current rate, what will the price be 5 years from now

    asked on March 25, 2012
  55. geography

    One-half of the world’s energy comes from which source? A. hydroelectric power B. fossil fuels C. nuclear energy D. solar energy i think its B

    asked on December 5, 2011
  56. Science

    What determines the color of obkects that emit light and what determines the color of objects that do not? I wrote that color of objects that emit light is determined by the wavelenghts of light waves that they emit.Then I wrote that if an object does not

    asked on November 13, 2011
  57. Science

    This is for my science hw:Sound in an empty room can be very loud, with many echoes. Describe three ways to make the room quieter. The thing is that I looked online, asked my friends for help, and everything but no avail! This has to have a scientific

    asked on November 13, 2011
  58. geography

    To maintain the current population density, which of the following must occur? a. The death rate must be higher than the birth rate. b. The birth rate must be higher than the death rate. c. The birth rate and death rate must stay the same with migration at

    asked on November 5, 2011
  59. physics

    A car skids to a halt to avoid hitting ann object in the road draw a basic motion diagram . using the images from the movie from the time the skid begins until the car is stopped

    asked on January 23, 2011
  60. chemistry

    Calculate the mass in atomic mass units of .25 mol of carbon-12 atoms. I don't know how to set it up..

    asked on March 9, 2010
  61. 8th grade

    Laura is training her pet white rabbit, Sugar, to climb up a flight of 25 steps. Sugar can hop up one or two steps at a time. She never hops back down, only up. How many different ways can Sugar hop up the flight of steps? PLEASE HELP!!!! I'M TOTALLY

    asked on January 18, 2010
  62. brain teaser

    7 c in the r 3pc 12 e in a d 32 t in the a EXAMPLE: 60 m in a h go minutes in an hour PLEASE HELP ME How about this one? 12 e in a d 12 eggs in a dozen 7 cups in the recipe? 7 colors in the rainbow

    asked on February 18, 2007
  63. math

    In a square ABCD, point P is chosen inside ABCD and point Q outside ABCD such that APB and BQC are congruent isosceles triangles with angle APB = angle BQC = 80 degrees. T is a point where BC and PQ meet. Find the size of angle BTQ

    asked on August 28, 2018
  64. Science

    Which is the SIMPLEST level of organization in a human being? A) cells B) organs C) tissues D) organ systems C?

    asked on March 28, 2018
  65. Algebra

    In a two-digit number the units’ digit is 7 more than the tens’ digit. The number with digits reversed is three times as large as the sum of the original number and the two digits. Find the number.

    asked on February 16, 2017
  66. Geometry

    The side lengths of an equiangular octagon are $1$, $2$, $3$, $4$, $1$, $2$, $3$, and $4$ in clockwise order. Find the octagon's area. I don't know how to do this.

    asked on January 28, 2017
  67. chemistry

    how many grams of barium would be found in 1.72g of barium sulfate 1.72(137.3/233.4)

    asked on September 25, 2016
  68. chemistry

    How many GRAMS of carbon dioxide can be produced from 3.70 grams of oxygen ?

    asked on September 24, 2016
  69. Math

    When you have a 76% in math and you need to get your grade up to a b and daily assignments are 10% and quizzes are 80%. How will I get my grade up to a b in 5 weeks

    asked on August 26, 2016
  70. Language Art

    3. Which of the following quotes from the text best reveals Windrider's approach to living? A- "I don't know much about being a father." B- "It's hard to put things to a letter, especially when the letter is read to your family by another person." C- "Then

    asked on May 10, 2016
  71. math

    What is the minimum value of the expression 2x^2+3y^2+8x-24y+62 for real x and y?

    asked on April 14, 2016
  72. Math

    What is the sum of all values of k such that the equation 2x^2-kx+8=0 has two distinct integer solutions? Thank you for your help! :)

    asked on April 11, 2016
  73. history

    If you were forced to live far away from your homeland, how would you react to your situation? Explain your reaction.

    asked on January 5, 2016
  74. Math

    Jana is taking pledges for a bike-a-thon fundraiser. Ivan pledged $4.25,plus $1.25 for each mile that Jana bikes. Vicky pledged $5.75,plus &0.75 for each mile that Jana bikes. (Part A)- write expression for the number of dollars Ivan pledged and the number

    asked on January 3, 2016
  75. Algebra 2

    Can someone please help me solve this absolute value equation? The equation is: -4|t-2|-9=-37 The thing I don't understand is how to isolate the absolute value (t-2). Do I divide both sides by -4 and then add both sides by -9? In that case I would get

    asked on October 27, 2015
  76. physics

    two charges, -16uC and +4uC, are separated by three meters. a) Where along the line through the charges is the electric field zero? b) What is the force on a 14uC charge place there? uC = microCoulombs for a), would it be 16+ -4? Thank you!

    asked on July 29, 2015
  77. physics

    An 0.90 kg object is attached to one end of a spring, and the system is set into simple harmonic motion. The displacement x of the object as a function of time is shown in the drawing. With the aid of these data, determine the following values. I got

    asked on July 4, 2015
  78. Science

    A boy and girl sit on a seesaw of length 4m, balanced at its center. The girl sits at the far end and has a mass of 50kg. The boy is twice as heavy as the girl, and therefore sits midway between his end and the center. Then the girl is given a bag of

    asked on February 23, 2015

    balance the redox reaction NO2^- + Ag^+ = NO3^- + Ag

    asked on February 14, 2015
  80. Math

    Directions: Find all solutions of the equation in the interval (0, 2pi) sin x/2=1-cosx

    asked on February 3, 2015
  81. chemistry

    C6H12 = 9O2 --> 6CO2 = 6H2O + 3,690 kJ *Personally Balanced* What quantity of heat is produced if 32g of cyclohexane react with 95 L of oxygen at STP? *My work so far is below* 95L*(1 mol O2/22.4L) = 4.2 mol O2 What would be the next motive?

    asked on January 21, 2015
  82. biology

    which is true about the inside of a cell? -the inside of an animal cell contains structures that carry out specific jobs for the cell, but no water or molecules dissolved in water -the inside of an animal cell contains water, molecules dissolved in the

    asked on December 1, 2014
  83. Organic Chemistry

    In a very controlled experiment, a student is sure that 0.500 grams of caffeine is dissolved in 125 mL of water. The student extracts the caffeine using a single extraction of 21 mL of methylene chloride. How much caffeine is in the methylene chloride? How

    asked on October 31, 2014
  84. Derivatives

    Can you help me find the derivative of these problems...Every time I try doing these I don't get the right answer. All of these are fractions; (x)/(2+x)= (x^2+3)/(x^3-2)= (2π)/(x^2-x)= These are not fractions; (3x^3/2 tanx)= (3x^1/2 sinx)= (4secx tanx)=

    asked on October 22, 2014
  85. Math

    Can someone tell me if I have this right? Thanks! Question: P varies directly as Q can be written as P = kQ. True Or False. My answer: True

    asked on October 3, 2014
  86. Math: Statistics Least squares line

    Find an equation of the least squares line, then use it to complete the table. X- 111 169 230 287 335 ? Y- 2 3 4 5 6 7 Extrapolation I missed the lesson on this and as far as I can tell I think the least squares line is y= .01764x+ .oo693 If anyone could

    asked on March 19, 2014
  87. Physics

    The molecular mass of oxygen molecules is 32, and the molecular mass of nitrogen molecules is 28. If these two gases are at the same temperature, the ratio of nitrogen's r m s speed to that of oxygen is: (8)1/2:(7)1/2 8:7 (7)1/2:(8)1/2 7:8

    asked on February 4, 2014
  88. Algebra 1A

    What are the four steps for solving a problem?

    asked on January 29, 2014
  89. chemistry honors

    A student is asked to make an acetic acid/ acetate buffer with a pH of 4.10. The only materials on hand are 300 mL of white vinegar (5.00% by mass acetic acid, density = 1.006g/mL) and potassium acetate. How should the student proceed?

    asked on June 6, 2013
  90. chemistry honors

    A student is asked to make an acetic acid/ acetate buffer with a pH of 4.10. The only materials on hand are 300 mL of white vinegar (5.00% by mass acetic acid, density = 1.006g/mL) and potassium acetate. How should the student proceed?

    asked on June 6, 2013
  91. math

    5. A bus on a regular schedule takes 3 1/4 hours to reach its destination. The express bus takes 2 1/2 hours to make the same trip. How much travel time can be saved by taking the express? A. 1 1/4 hours B. 3/4 hour C. 2 hours D. 5 3/4 hours it C right?

    asked on May 16, 2013
  92. Chemistry

    A student dissolved the KHP in 100.0mL of water instead of 50.0mL. Will the molar concentration of the NaOH solution determined from titrating be greater, less than, or unaffected by this mistake? Explain.

    asked on April 2, 2013
  93. science

    can a place that receives very little rain still receive a lot of precipitation? explain your answer

    asked on January 7, 2013
  94. intergraded one

    What should you do when you ,ant sleep

    asked on August 30, 2012
  95. Chemistry

    Chemistry HELP - Rates of reaction, redox reactions? 10 points? An structural isomer of bromobutane (C4H9Br) can be hydrolysed using aqueous sodium hydroxide to produce butanol. This can be represented by the following equation: C4H9Br(l) + OH-(aq) >

    asked on March 27, 2012
  96. statistics

    At a small college it is known from previous years that 35% of all college freshman start in college algebra. The new freshman class has 100 students in it, What is the probability that between 35 and 42 freshman will start in college algebra? Is it

    asked on March 23, 2012
  97. pre-algebra

    When designing a pattern, Erica rotated a triangle 90 degrees about the midpoint of one side to create a second triangle. If the area of the original triangle is 48 square inches, what is the area of the second triangle?

    asked on February 23, 2012
  98. Physics

    A 20.0kg curling stone at the hog line and moves 28.35m [west] to sit on the button and score a point. If the coefficient of kinetic friction between the stone and the ice is 0.00200, what was the initial speed of the stone when it was released?

    asked on January 29, 2012
  99. Biology

    The gene for color blindness in humans is found on the X chromosome. A boy has a color-blind father. Will the boy be color blind? Explain.

    asked on November 23, 2011
  100. geometry

    The height of a triangle is 12 centimeters greater than the width of its base. If h represents the height of the triangle, then the area of the triangle as a function of h is

    asked on November 15, 2011


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