Popular questions and responses by Alicia
  1. Chemistry

    calculate the minimum concentration of ag+ ion that must be added to (or built up in) a 0.140 m Na2CrO4 solution in order to initiate a precipitation of silver chromate. The ksp of ag2cro4 is 1.2 × 10^-12.

    asked on November 20, 2013
  2. physics

    15 beats are heard in 5 seconds when a piano key and a tuning fork of slightly higher frequency (440 Hz) are struck at the same time. What is the frequency of the sound emitted by the piano key?

    asked on July 9, 2011
  3. physics

    A bicycle has wheels of radius 0.3 m. Each wheel has a rotational inertia of 0.088 kg× m2 about its axle. The total mass of the bicycle including the wheels and the rider is 79 kg. When coasting at constant speed, what fraction of the total kinetic energy

    asked on July 10, 2012
  4. Physics

    A 30 kg child sits in a swing supported by two chains, each 1.4 m long. (a) If the tension in each chain at the lowest point is 265 N, find the child’s speed at the lowest point. (Neglect the mass of the seat.) Answer in units of m/s. (b) Find the force

    asked on December 3, 2016
  5. Math

    Mariko has an 80 inches = 1 inch scale- drawing of the floor of her house. On the floor plan, the dimension of her rectangular living room are 1 7/8 inches by 2 1/2 inches. What is the area of her real living room in square feet?

    asked on December 27, 2013
  6. math214

    A student asks whether a polygon whose sides are congruent is necessarily a regular polygon and whether a polygon with all angles congruent is necessarily a regular polygon. How do you answer?

    asked on February 16, 2010
  7. Algebra

    Use synthetic division to find the quotient and the remainder of: (x^3-7x^2+13x+3)/(x-2)

    asked on July 6, 2009
  8. Business Communication

    How can nonverbal communication help you run a meeting? How can it help you call a meeting to order, emphasize important topics, show approval, express reservations, regulate the flow of conversation, and invite a colleague to continue with a comment?

    asked on November 14, 2007
  9. contemporary math

    Intelligence quotients on the Stanford-Binet intelligence test are normally distributed with a mean of 100 and a standard deviation of 16. Use the 68-95-99.7 rule to find the percentage of people with the following IQs: a.) between 84 and 100 b.) below 52

    asked on June 23, 2008
  10. Early childhood eductaion

    Which fine motor skill would you expect children to be able to perform earliest?

    asked on July 22, 2019
  11. 6th grade Math

    Zoya asked the students of her class their baseball scores and recorded the scores in the table shown below: Baseball Scores Score Number of Students 0 1 1 2 2 5 3 3 4 6 5 7 6 9 Based on the table, what is the mean baseball score? 2.5 2.9 3.5****** 4.1

    asked on May 23, 2017
  12. math!!!

    The function h = -6(t - 2.5)^2 + 38.5 gives the height, h metres, of a batted baseball as a function of the time, t seconds, since the ball was hit. What as the maximum height of the ball? a) -6 b 2.5 c) 38.5 d) 0

    asked on January 19, 2011
  13. math sequences and series

    how do i solve if t1=1/2 and tn=tn-1+1/n(n+1), determine an explicit formula for the general term. (hint: it is neither arithmetic nor geometric. write out the first few terms)

    asked on May 31, 2010
  14. 8th grade math

    how do you solve this??? 2(x-3)=-x+3+5x i don't get distributing stuff

    asked on December 15, 2009
  15. Math

    An elevator moves at a rate of -5.8 feet per second from a height of 300 feet above the ground. It takes 3 seconds for the elevator to make its first stop. How many feet above the ground is the elevator now?

    asked on September 21, 2013
  16. Business Communications

    Your boss wants to send a brief email message welcoming employees recently transferred to your department from your Hong Kong branch. They all speak English, but your boss asks you to review his message for clarity. What would you suggest your boss change

    asked on November 14, 2007
  17. Data Management

    This is a hard question as it has a diagram. Basically the diagram states: Victoria - Montreal costs $580 Victoria - Saskatoon costs $230 Victoria- Toronto costs $505 Saskatoon - Toronto costs $398 Toronto - Charlottetown costs $395 Toronto - Montreal

    asked on April 7, 2011
  18. Chemistry

    10.0 mol of ammonia gas is injected into a 4.0 L container. At equilibrium 1.2 mol of nitrogen gas is found in the container. The number of moles of ammonia gas left in the container must be which of the following? N2(g) + 3H2(g) 2NH3(g) + 94 kJ a. 8.8 d.

    asked on June 8, 2010
  19. math 214

    Henry claims that a line segment has a finite number of points because it has two endpoints. How do you respond?

    asked on February 16, 2010
  20. math

    to evaluate a variable expression,you must___________values for the variable,and then calulate the results

    asked on January 8, 2010
  21. Algebra

    Use composition of functions to show that the functions f(x) = 5x + 7 and g(x)= 1/5x-7/5 are inverse functions. That is, carefully show that (fog)(x)= x and (gof)(x)= x.

    asked on July 29, 2009
  22. College Algebra

    What is the Pythagorean Theorem.

    asked on November 20, 2007
  23. Math

    Natalie is making a tablecloth for a circular table 3 feet in diameter. The finished tablecloth needs to hang down 5 inches over the edge of the table all the way around. To finish the edge of the tablecloth, Natalie will fold under and sew down 1 inch of

    asked on November 3, 2007
  24. Math

    I need two 12x23 feet of carpet for my basement at $6.00 per square foot. How much will this cost?

    asked on October 26, 2016
  25. geometry

    Robin is looking up at a 89degree angle to the top of the stratosphere in Las Vegas, which is 1149ft tall. how far away is Robin form the base of the tower? round to the nearest hundredth

    asked on July 7, 2016
  26. math

    The winning team's score in 13 high school basketball games was recorded. If the sample mean is 54.3 points and the sample standard deviation is 11.0 points, find the 98% confidence interval of the true mean.

    asked on April 16, 2016
  27. algebra

    B=1/3h(q+z) solve for q

    asked on June 4, 2013
  28. math

    How do you evaluate i to large powers such as i^1992, i^1993, and i^2000 without a calculator?

    asked on February 8, 2013
  29. Chemistry

    how many liters of oxygen are necessary for the combustion of 425 g methane assuming the reaction takes place at STP

    asked on February 17, 2011
  30. Math

    5. The Leaning Tower of Pisa leans toward the south at an angle of 5.5 degrees. One day near noon its shadow was measured to be 84.02m long and the angle of elevation from the tip of the shadow to the following, assume that the Tower is like a pole stuck

    asked on January 19, 2011
  31. math 214

    A group of students on a hiking trip wants to find the distance AB across a pond (see the following figure). One student suggests choosing any point C, connecting it with B, and then finding point D such that

    asked on February 26, 2010
  32. math214

    One student says “My sister’s high school geometry book talked about equal angles. Why don’t we use the term equal angels instead of congruent angles? How do you reply?

    asked on February 16, 2010
  33. algebra

    Cycle Paths, inc. makes bicycles, tricycles, and unicycles. Last week they made 88 more bicycles than unicycles, and 5 times as many tricycles as unicycles. If they made 40 more bicycles than tricycles, how many unicycles did they make?

    asked on September 28, 2009
  34. chemistry

    The density of a 15.00% by mass aqueous solution of acetic acid, CH3COOH, is 1.0187g/mL. What is (a) the molarity? (b) the molality? (c) the mole fraction of each component?

    asked on February 11, 2008
  35. Mathematics

    Ruben runs 4 miles in 30 minutes. At the same rate how many minutes would he take to run 10 miles?

    asked on May 1, 2020
  36. Math

    For the discrete random variable X, the probability distribution is given by P(X=x)= kx x=1,2,3,4,5 =k(10-x) x=6,7,8,9 Find the value of the constant k E(X) I am lost , it is the bonus question in my homework on random variables so it must be hard. Many

    asked on March 18, 2018
  37. help

    Draw and use a tape diagram to model and solve the problem below. In a soccer league, the ratio of boys to girls is 4 to 6. There are a total of 50 players in the soccer league. Determine how many girls play in the soccer league. A. 10 B. 20 C. 50 D. 30

    asked on February 20, 2018
  38. 6th grade Math

    If x = 2.5, 5x = ____. (Only input decimals such as 12.7 as the answer.) Answer for Blank 1:

    asked on May 23, 2017
  39. history

    What was the significance of the Supreme Court's ruling in the Marbury vs. Madison case? The ruling determined that Congress could act against the president if it wished. The ruling determined that the Supreme Court was more powerful than the president.***

    asked on November 7, 2016

    What is the infinitive phrase in the following sentences? Tell whether it is used as a noun, adj, or adverb. 1. Early Bostonians STAGED THE BOSTON TEA PARTY TO PROTEST TAXATION WITHOUT REPRESENTATION. 2. TO PROTECT THEIR COMFORTABLE POSITION, Louis XVI and

    asked on October 5, 2016
  41. Temperature(Math)

    At 1:00 pm the temp is 72 deg, the temp went down to 52 deg at 6:30, what is the temp at 4:00pm?

    asked on June 3, 2016
  42. Algebra

    Evaluate the polynomial 6x - y for x = - 3 and y = 2. A. 15 B. –20 C. 4 D. –16 I think it is I right?

    asked on November 11, 2015
  43. Algebra

    I'd like to know if I am right... A rectangular box is twice as long as it is wide. The height of the box is 3 feet less than the width. If the box is x feet wide, what polynomial represents its volume in cubic feet? A. 4x - 3 B. 2x^3 + 6x^2 C. 2x^2 - 6x

    asked on November 11, 2015
  44. Maths

    How would you solve this in order to find t? 0.2t(t-5.1)(t-9.1)=2.4+0.75t I tried differentiating it, but I wasn't getting the answer I was supposed to

    asked on October 9, 2015
  45. Chemistry

    How many liters of Carbon Dioxide are formed by burning 6011.0 grams of C3H7OH with excess of oxygen gas and is carried out at 20.00 degrees Celsius, and 1.150 atm of pressure. I know this needs PV=nRT but the burning and excess part is throwing me off.

    asked on August 15, 2015
  46. Algebra 2

    Solving Quadratic Systems x^2+y^2=20 x^2-6y=28 PLEASE SHOW WORK I'M HAVING TROUBLE SOLVING IT

    asked on December 1, 2014
  47. Algebra 2

    Complete the Square Solve each equation x^2+8x+16=16/9 Show work i want to learn!!!

    asked on November 13, 2014
  48. Algebra 2

    solve each system of equation 3x+5y+2z=4 2x-2y+3z=-4 x+y+z=0 *could you show work because I want to learn how you got this answer

    asked on October 11, 2014
  49. Strategies for Academic Success

    Sean is taking an online course in Psychology, and is about to take a quiz over the lesson, “The Experimental Method”. He did poorly on his homework assignment and is struggling to remember the lesson content. What should Sean do before he takes the

    asked on May 2, 2014
  50. math

    The radius of the earth is approximately 3950 miles. The radius of Jupiter is approximately 44,400 miles. Since the radius of Jupiter is more than 11 times that of the earth, which comes closest to the volume of Jupiter ?

    asked on May 1, 2014
  51. Algebra

    Ramona divided his 35,000 inheritance between two investments, one paying 9% and the other 12% simple interest. is total annual income on the interest alone was 3,000. How much did he invest at 9%?

    asked on April 21, 2014
  52. Geometry

    a hemispherical bowl with radius 25cm contains water whose depth is 10cm. what is the water's surface area

    asked on March 31, 2014
  53. Geometry

    I need help in this question!!! CD has an endpoint at (2,-1) and a midpoint at (8,3). which measure is closest to the length of CD? A. 20.4 units B. 8.4 units C. 14.4 units D. 11.7 units

    asked on March 26, 2014
  54. algebra

    explain how you solve 11x=3y=12 using 3x=9 as subsitution

    asked on February 14, 2013
  55. math

    A map indicates that two cities are 160 miles apart. The scale of the map is 1/2 inch= 20 miles. 1. how many inches apart are the cities on the map. 2. Another map show the two cities has a scale of 3/4 inch =20 miles. How many inches apart are the two

    asked on January 27, 2013
  56. math

    It cost $15.00 to buy 150 sheets of brand A's paper. it cost $19.25 to buy 175 sheets of brand B's paper. Which brand has the better value and by how much?

    asked on January 27, 2013
  57. math

    what is the relative error of a distance given as 550cm plus or minus 24.2cm?

    asked on January 27, 2013
  58. business statistics

    Assume that X is a binomial random variable with n = 5 and p = 0.35. Calculate the following probabilities?

    asked on November 14, 2012
  59. Calculus

    Find the equation of the tangent plane at the given point. 1)x^2+y^2-z=1 at the point (1,3,9) 2)x^2*y^2+z-40=0 at x=2, y=3 3) x^2+ln(xy)+z=6 at point (4,0.25,2) For the first one I got the partial fraction in terms of x, y and z and my final answer was

    asked on October 4, 2012
  60. Chemistry

    A 125-g piece of metal is heated to 288 degrees celsius and dropped into 85.0 g of water at 26 degrees celsius. If the final temperature of water and metal is 58 degrees celsius, what is the specific heat of the metal?

    asked on April 16, 2012
  61. Physics

    While sitting on a tree branch 12m above the ground, you drop a chestnut. When the chestnut has fallen 2.5m, you throw a second chestnut straight down. What initial speed must you give the second chestnut if they are both to reach the ground at the same

    asked on February 9, 2012
  62. Math

    If Jillian must average at last 90 on two quiz scores before she can move on the next skill level. Jillian got a 92 on her first quiz. What scores could jillian get on her second quiz in order to move to the next skill level

    asked on January 10, 2012
  63. math

    im in sixth grade and im confused with this question.there are 44,000 people living in salem.(16,000~workers :2,000~preschoolers : 13,000~students : 4,000~retirees : 8,000~homemakers : 1,000~unemployed) *what fraction of the population has jobs outside

    asked on October 6, 2011
  64. Chemistry

    Which of these is more efficient on a large/small scale (power generation) and why? burning hydrogen to generate heat to drive turbines to produce electricity or directly producing electricity in a fuel cell reaction Can hydrogen be piped into homes,

    asked on May 8, 2011
  65. chemistry

    a process stream containing acetone vapour in nitrogen enters a cooler compressor at 65 degree celcius and 1 atm, with relative saturation of acetone equal to 50%. the gas is compressed and cooled to 20 degree celcius to recover 95% of acetone as a liquid.

    asked on March 17, 2011
  66. math

    Patty Kim earns $20,000 per year. She is paid 26 times per year and claims 1 exemption. If $17.31 is withheld from each paycheck, at what rate is she taxed?

    asked on February 15, 2011
  67. physical science

    Riding his bike, Dewayne can start from rest and get going at 12 m/s in 4 seconds. Beth can get going 16 m/s in 5 seconds. Who has a greater acceleration? How do you know?

    asked on February 2, 2011
  68. science

    What was Hippocrates famous for?

    asked on January 17, 2011
  69. Math

    Jeremy is in Grade 8. He has a paper route and wants to save for his college education. He determines that he has $100 per month to put into an account at 6%/a compounded monthly. How much will he have at the end of five years for his college education? n

    asked on January 17, 2011
  70. differential equation!!

    How can I solve the differential equation? C = 15ð(2Dh+(3/4)D²) + ë (94.25 Dh+35.34 D^2)/(pi D^2h/4) first dC/dD? second d^2C/dD^2? first dC/dh? second d^2C/dh^2?

    asked on November 23, 2010
  71. math-optimal diameterand height

    A cylindrical oil-storage tank is to be constructed for which the following costs apply: cost per square meter metal for ides $30.00 combined costs of concrete base and metal bottom $37.50(cost per square meter) top 7.50 (cost per square meter) The tank is

    asked on November 18, 2010
  72. Chemistry

    write the formula for hydrogen and bromine forming hydrogen bromide & nickel and oxygen forming nickel (II) oxide

    asked on November 14, 2010
  73. Math

    Graph the circle 4x^2+4y^2-24x-16y-29=0

    asked on November 2, 2010
  74. Math

    when // lines are cut by a transveral, alternate exterior angles are congruent. true of false ? Explain please.

    asked on October 29, 2010
  75. English

    I am writing an essay based whether non fiction can equal or surpass fiction. I chose to write that non fiction can equal fiction and my 3 support aruguments it that they both have a purpose, both contain fictional elements(specifically conflict) and they

    asked on June 6, 2010
  76. Communication and Gender Studies

    In relation to Standpoint Theory in Gender Communication please provide a specific example of how a well-known political figure has standpoints consistent with their supporters in some major ways and explain it from the perspective of standpoint theory.

    asked on June 1, 2010
  77. algebra, please help!


    asked on April 18, 2010
  78. algebra 1


    asked on April 18, 2010
  79. math214

    In right triangle ABC, point O is the in center; CX 2”; AC 8”; AB 10; Find y.

    asked on February 28, 2010
  80. math214

    Describe objects that have each of the following types of symmetry. Line, Point, Plane, 90° rotational

    asked on February 23, 2010
  81. 11th grade Biology

    Match the following.. 12. Moves in cycles from nonliving things to living things back to nonliving, etc. 13. Can be passed from one organism to another in a food chain. 14. Is constantly being lost from the biosphere. 15. Can be created by living

    asked on September 16, 2009
  82. Algebra

    Find the slope of the line containing the given points (-2,0) (-2-3)

    asked on June 5, 2009
  83. Algebra

    Reduce each rational expression to lowest terms. Assume that the variables represent only numbers for which the denominators are nonzero. (a^2-b^2)/(a-b)

    asked on February 28, 2009
  84. Math

    Find the surface area of the cylinder radius=1 hieght=8

    asked on February 5, 2009
  85. student questinnaire

    what are your limitations? how do you compensate for them? this is something i have never thought about before and i just don't know what my limitations are!!! i need to fill out a school form. it sounds weird but can someone please help me figuring out

    asked on January 19, 2009
  86. to SraJMcGin,

    Hello, we have to do an essay on this question can you talk me through the steps to help me find the answers please. In punishment without revenge by lope de vega what are the similarities and differences in the two love triangles. thanks

    asked on October 13, 2008
  87. Spanish literature

    Hello, in the play Punishment without Revenge there are 2 love triangles one is with the Duke, Cassandra, and Frederico, the question is there is another love triangle are the people in that love triangle Marquis, Aurora, and Frederico also another

    asked on September 27, 2008
  88. math

    AB+CD=AAA What is the value of C? Choices: 1, 3, 7, 9, or N/A

    asked on July 22, 2008
  89. History,

    Hi, My task is to write a essay for the topic 'Women in World War II:An important step in women's liberation or another opportunity for exploitation?' -What i want to say is women being involved in the war was a step in their liberation because they were

    asked on April 21, 2008
  90. science

    Why is it not easy to observe individual chromosomes during the interphase?

    asked on January 27, 2008
  91. chemistry

    I have a problem that states: Find the pressure of a sample of carbon tetrachloride, CCl4 if 1.00 mol occupies 35.0L at 77.0 degress C (slightly above its normal boiling point). Assume that CCl4 obeys (a) the ideal gas law; (b) the van der Waals equation.

    asked on December 30, 2007
  92. ap chem

    Assuming the volumes of all gases in the reaction are measured at the same temperature and pressure, calculate the volume of water vapor obtainable by the explosive reaction of a mixture of 725mL of hydrogen gas and 325mL of oxygen gas. andd... Calculate

    asked on December 29, 2007
  93. science

    What is the majority compound in cells? What is the majority element in cells? What is the second most major element in cells? Why do animals contain more calcium than plants?

    asked on December 13, 2007
  94. Can someone proof read please

    This is the orginial assignment, and I am suppose to rewrite it. I am a new publisher with some really great books to sell. I saw your announcement in Publishers Weekly about the bookseller's show you're having this summer, and I think it's a great idea.

    asked on November 24, 2007
  95. history

    what are two river valleys located in india In ancient India, the two major river valleys were the Indus and the Ganges. Today, however, the Indus River is almost entirely in Pakistan. thank you i could not find

    asked on August 15, 2007
  96. Math

    consider the function f(x)= x^3+ax Given that f´(2)=0 ,determine value of a Thanks I need help

    asked on June 11, 2020
  97. chemistry

    a gas has a volume of 4L at a temperature of -33 degrees C. if the temperature is increased to 27 degrees C and the pressure remains constant, what will be the new volume of the gas?

    asked on April 12, 2020
  98. Pharmacology

    patient is receiving an antibiotic IVPB in 50ml every 8 hours to run over 1 hour plus a maintenance IV of 100ml/hr. what is the 24h intake parenterally?

    asked on March 3, 2020
  99. algebra 2

    how do you find the rate of change from a linear graph?

    asked on August 27, 2019
  100. Child growth and development

    True or false locomotor skills require the use of small muscles in the hands or feet.

    asked on July 22, 2019


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