Most popular questions and responses by travis
  1. math

    Write an expression to represent: Four more than the product of one and a number xxx.

    asked on November 15, 2017
  2. Physics

    In a scene in an action movie, a stunt man jumps from the top of one building to the top of another building 3.5 m away. After a running start, he leaps at an angle of 14 with respect to the flat roof while traveling at a speed of 5.6 m/s. The

    asked on October 4, 2011
  3. Math

    Find the probability using combinations.A bag contains 6 cherry, 3 orange and 2 lemon candies. You reach in and take 3 pieces of candy at random. Find the probability that you have all cherry candies.

    asked on February 20, 2016
  4. Calculus

    Use geometry to evaluate the integral from 0 to 6 of the function f of x, dx for f of x equals 3 for x less than or equal to 3 and equals the quantity 6 minus x for x greater than 3 - 27 - 13.5 -12 - 10.5

    asked on May 21, 2018
  5. math

    What 2 numbers multiply to 30 but add to 16

    asked on September 13, 2011
  6. calculus

    a) Sketch a curve whose slope is always positive and increasing. b) Sketch a curve whose slope is always positive and decreasing. c) Give equations for curves with these properties. So for a, I drew a positive slope that was concave up. And for b, I drew a

    asked on September 21, 2012
  7. calculus

    Suppose f'(x) = xe^-x^2. a) On what interval is f increasing? On what interval is f decreasing? b) Does f have a maximum value? Minimum value? So should I assume that f'(x) > 0 since e has to be a positive number?

    asked on September 22, 2012
  8. Trig

    Find all the solutions in the interval [0,2pi). 2sin2x - sqrt(2) = 0 sin2x = sqrt(2)/2 I'm confused by the double angle. Please help.

    asked on December 2, 2008
  9. Calculus

    The owner of a used tire store wants to construct a fence to enclose a rectangular outdoor storage area adjacent to the store, using part of the side of the store (which is 220 feet long) for part of one of the sides. (See the figure below.) There are 430

    asked on March 4, 2013
  10. Chemistry

    Which aqueous solution would you expect to have the lowest freezing point? (a) 0.10 molal glucose,C6H12O6, or (b)0.10 molal NaCl solution

    asked on August 29, 2010
  11. Calculus

    Two planes leave an airport simultaneously. One travels north at 300 mph and the other travels west at 400 mph. How fast is the distance between them changing after 10 minutes?

    asked on April 6, 2017
  12. Calculus

    A manufacturer produces bolts of fabric with a fixed width. The quantity q of this fabric (measured in yards) that is sold is a function of the selling price p (in dollars per yard), so we can write q = f(p).Then the total revenue earned with selling price

    asked on March 13, 2013
  13. english

    Imagine you are on a local commission appointed to study the lack of proper recreation facilities for youth in your neighborhood. Decide what facilities should be recommended. Write an appropriate resolution to be presented to your county government.

    asked on October 26, 2009
  14. Chemistry

    Calculate the amount of energy released when Methane is burned.

    asked on March 10, 2011
  15. 11th grade (World History)

    Which ruin is about 140 miles southwest from Copan?

    asked on September 2, 2008
  16. Math

    Solve the following linear programming problems by the graphical method Dr. Lum teaches part-time at two different community colleges, Hilltop College and Serra College. Dr. Lum can teach up to 5 classes per semester. For every class taught by him at

    asked on February 4, 2016
  17. chemistry

    the thermite reaction was previously used to weld the rails of railroad tracks together. the reaction is: Fe2O3(s)+ 2Al(s)--> 2Fe(l)+ Al2O3(s) (2Fe and 3 oxygen) (2Al and 3 oxygen) what masses of iron(III) oxie and aluminum must be used to produce 15.0g of

    asked on January 12, 2012
  18. Finance

    Dr. J. wants to buy a Dell computer which will cost $2,788 four years from today. He would like to set aside an equal amount at the end of each year in order to accumulate the amount needed. He can earn 7% annual return. How much should he set aside? A.

    asked on December 5, 2009
  19. Chemistry

    Calculate the amount of energy released when Butane is burned.

    asked on March 10, 2011
  20. chemistry

    Which of the following is true regarding the solubility of gases in liquids? Question 4 options: Solubility decreases as temperature increases. Solubility increases as temperature increases. Solubility is unaffected by changes in temperature. None of the

    asked on October 30, 2014
  21. Calculus

    A rectangular storage container with an open top is to have a volume of 10m^3. The length of its base is twice the width. Material for the base costs $3 per m^2. Material for the sides costs $10.8 per m^2. Find the dimensions of the container which will

    asked on March 6, 2013
  22. math

    Bill purchased 4 pens for $3.32 including $.16 sales tax. FIND THE C COST OF ONE PEN. I need to write this in an equation. Then solve that's what the worksheet says.

    asked on February 17, 2011
  23. math algebra

    a tabletop is shaped like a golden rectandle its lenth is 5 ft whats the able width

    asked on February 9, 2015
  24. Chemistry

    Calculate the amount of energy released when Ethanol is burned.

    asked on March 10, 2011
  25. Math

    Suppose that $2500 is invested at an interest rate of 2.5% per year, compounded continuously. After how many years will the initial investment be doubled?

    asked on June 9, 2010
  26. biomechanics

    During a biceps curl, the elbow's relative angle during flexion changes from 3° to 157°. During an 8 repetition set, what is the total angular distance and displacement at the elbow in degrees and radians?

    asked on June 30, 2014
  27. chemistry

    write the name or formula for a reagent that will dissolve PbCl2 but not Hg2Cl2 and AgCl?

    asked on October 24, 2011
  28. Science

    in scientific inquiry what is communicating?

    asked on September 28, 2016
  29. Calculus

    Let the length of a rod be 10 meters and the linear density of the rod ρ(x) be written in the form ρ(x) = ax + b with x = 0 representing the left end of the rod and x = 10 representing the right end of the rod. If the density of the rod is 2kg/m at the

    asked on May 4, 2017
  30. Geometry

    If all of the diagonals are drawn from a vertex of a pentagon, how many triangles are formed?

    asked on January 4, 2018
  31. Math

    A bag contains 5 red balls, 4 white balls, and 3 black balls. Two balls are drawn without replacement. What is the probability that at least one ball drawn is white?

    asked on March 4, 2016
  32. Government

    how could i explain the unitary, confederate, and federal systems of government in a five hundred word essay

    asked on October 7, 2009
  33. Chemistry

    I have this question in front of me concerning Methanol (CH3OH) & how geseous methanol is formed via the following thermochemical equation: CO(g)+2H2(g)¡êCH3OH(g)∆H=-90kJ . Now, it asks me (explanations should show a clear understanding of how Le

    asked on February 7, 2007
  34. Physics

    Consider the diagram shown below of a stationary 8 kg mass suspended from the ceiling by two inextensible ropes Draw a scale diagram

    asked on February 4, 2015
  35. geometry

    The bases of a trapezoid measure 1/4 and 3/8 inches, and the height is 1 inch. What is the area of the trapezoid?

    asked on March 10, 2010
  36. Physics

    Aperson walks37.7◦ northofeast for 3.54km. Another person walks due north, then due east to arrive at the same location. How far due north would this person walk?

    asked on September 12, 2018
  37. Chemistry

    "The sun emits UV radiation that can have serious health consequences. In particular, so-called UVB radiation is mostly absorbed by the ozone layer in the upper atmosphere (altitudes of 10 - 50 km), but the part that reaches the earth can cause DNA

    asked on September 13, 2012
  38. calculus

    find the centroid of the region bounded by x^2-12x and the x-axis

    asked on November 28, 2010
  39. Physical Science

    A 144 kg park bench made of iron sits in the sun and its temperature increases from 25 degrees celsius to 35 degrees celsius. How many kilojoules of energy does the bench absorb?

    asked on September 14, 2015
  40. Calculus

    A table of values for f,g,f′, and g′ are given in the table below: x f(x) g(x) f′(x) g′(x) 5 0 -4 -9 5 0 5 0 -6 9 -4 5 5 9 -5 If h(x)=f(g(x)), find h′(5), If H(x)=g(f(x)), find H′(0)

    asked on April 4, 2013
  41. English

    Which of the following sentences has a compound predicate? A. She raced along the path to beat him to the beach. B. While he swam, she collected shells. C. She washed the shells and dried them in the sun. D. She placed the shells in a plastic bag while he

    asked on July 6, 2006
  42. Math

    Find the volume of water required to fill a pool with a diameter of 6m and a height of 2m. Keep in mind that the water must travel through a hose before it goes into the pool. Assume the hose is a perfect cylinder. The length of the hose is 8m and the

    asked on December 14, 2015
  43. government

    write several paragraphs stating advantages and disadvantages to the unitary, confederate, and federal systems of government.

    asked on October 26, 2009
  44. Math

    I tried answering this and pending how I read it I get several answers. Any help out there 1. A box of crackers has a mass of p kilograms. When empty, the box has a mass of 200 grams. What is the total mass of the crackers in 5 such boxes? Express your

    asked on December 12, 2016
  45. Math

    If i have 3 inch squares cut out the corners of a rectangular shaped piece of cardboard...after folding the the to form a box the length is twice as long as it is wide and has a volume of 1350 cubic inces...what are the dimensions

    asked on February 20, 2013
  46. Physicis

    Airplane staring from airport a flies 300 km east then 395 km 26.5 degrees west of north, and then 150 km north to arrive at airport b. what angle is the straight flight from a to b north of east and how far

    asked on October 2, 2013
  47. Calculus

    A table of values for f,g,f′, and g′ are given in the table below: x f(x) g(x) f′(x) g′(x) 5 0 -4 -9 5 0 5 0 -6 9 -4 5 5 9 -5 If h(x)=f(g(x)), find h′(5), If H(x)=g(f(x)), find H′(0)

    asked on April 4, 2013
  48. chemistry

    Water (H20) is a liquid at room temperature and atmospheric pressure whereas hydrogen sulfide (H2S) is a gas under the same conditions. Based on this information, what can you say about the intermolecular interactions in these two substances. So would this

    asked on September 16, 2012
  49. Logic

    For each of the following enthymemes, identify the premise(s) and the conclusion, and fill in any missing premises or missing conclusions. If possible, fill in what is missing in such a way as to make the arguments valid. It is possible that nothing

    asked on February 8, 2008
  50. Homeowork

    I basically just have trouble staying focused and doing my homework, and often get discouraged when it looks long- how can I keep myself on track, because hw is my biggest issue? Go here , with your mom.

    asked on May 1, 2007
  51. Biology

    Can anyone help me with this one question that I'm stumped on? The process by which a web-spinning spider makes a "sketch" of a web design before making a permanent web is called - A. lock-step sequence B. simulation C. trial and error D. cinch and attach

    asked on September 27, 2006
  52. calculus

    Differentiate: 1/s+ke^s Do I just use the quotient rule? Thanks

    asked on September 23, 2012
  53. us history

    The ancient Greek city-state of Athens was _____.

    asked on June 22, 2010
  54. Debate

    Hello, I have to create a debate for my English class. I am debating a difficult topic, and I was hoping I could get some good ideas on where to start. My topic is that I have to prove that love is not nessicary for survival. Does anyone have any good

    asked on February 4, 2007
  55. Math

    I tried answering this and pending how I read it I get several answers. Any help out there 1. A box of crackers has a mass of p kilograms. When empty, the box has a mass of 200 grams. What is the total mass of the crackers in 5 such boxes? Express your

    asked on December 13, 2016
  56. Math

    Solve the inequality. Expression solution set using interval notation and graph the solution set using a number line. -15x+3

    asked on January 29, 2016
  57. Chemistry

    Write the chemical symbol for the atomic species with 35 electrons and a charge of +34 on the nucleus. Does the +34 charge just mean the number of protons? And then 35 electrons would give it a - charge so it would be Se-? Or am I looking at this question

    asked on September 15, 2012
  58. chemistry

    Calculate the activation energy (in Joules) for a reaction whose rate constant doubles when the temperature is raised from 298 K to 500 K. Take R to be 8.314 J/K-mol.

    asked on October 13, 2011
  59. accounting

    Is it necessary for a finance manager to understand accounting if the firm has a professional accountant on staff and why?

    asked on January 2, 2010
  60. Math

    What is 1+1

    asked on September 29, 2016
  61. algebra 2


    asked on September 1, 2015
  62. calculus

    Find the values of p for which the following series is convergent. The sum from n=2 to infinity of 1/(n(ln(n))^p). I tried the integral test using u-substitution, and I know the answer is p>1, but I'm not quite sure how to get there. Thanks for the help.

    asked on February 10, 2013
  63. Calculus

    Use implicit differentiation to find dy/dx. e^4x = sin(x+2y). This is a practice problem. It says the correct answer is 4e^x/(2sin(x+2y)) but I keep getting 4e^(4x)/(2cos(x+2y)). I thought the derivative of e^(4x) would be 4e^(4x), not 4e^(x). And I use

    asked on October 6, 2012
  64. chemistry

    Very carefully, but breifly discuss, with specific example, Le Chatelier Principle and its relationship to common ion effect.

    asked on October 13, 2011
  65. algebra

    10+2[2+(1+1)-2 to the 2nd power]

    asked on August 31, 2010
  66. Math

    explain how to add 96+79 using a 300 chart? I do not know what a 300 chart is.

    asked on October 10, 2007
  67. Calculus

    Use the disk method to find the volume of the solid generated by revolving about the y-axis the region bounded by the curves y=8−x^2 and the curve y=x^2.

    asked on April 25, 2017
  68. geometry

    Prove: △ABC has at least one angle with measure 60° or less

    asked on February 18, 2015
  69. Calculus

    If f(3)=−3, g(3)=9, f′(3)=1, and g′(3)=2, Find (f/(f−g))′(3).

    asked on March 14, 2013
  70. Calculus

    Prove that the integral from 0 to 2 of sqrt(4-x^2)dx = pi Should I use a trip substitution for this? Thanks for the help.

    asked on November 5, 2012
  71. chemistry

    "The sun emits UV radiation that can have serious health consequences. In particular, so-called UVB radiation is mostly absorbed by the ozone layer in the upper atmosphere (altitudes of 10 - 50 km), but the part that reaches the earth can cause DNA

    asked on September 14, 2012
  72. chemistry

    5.0% glucose has a specific gravity of 1.02. what is the mass of 470mL of glucose solution.

    asked on September 3, 2012
  73. Chemistry

    What happens in confirmatory test for bismuth? What happens in confirmatory test for copper? What happens in confirmatory test for arsenic? Please help! an you explain in detail. even a link explaining it would help

    asked on October 31, 2011
  74. science

    Animal cells and plant cells have an outer covering, a _____. Their control center is called a _______.

    asked on August 18, 2010
  75. computer science

    Please design the ¡§Classes¡¨ that will work together for the implementation of the User Case ¡§Validate User¡¨ in the ATM machine. its just want us o write a diagram..

    asked on June 7, 2010
  76. math

    What do you do if the bottom number of a fraction is greater than the top number and you are subtracting?

    asked on April 29, 2010
  77. math

    what do we call numbers that cannot be arranged into 2-row arrays? A matrix of order 2 x n. n is the number of entires in each row.

    asked on August 24, 2006
  78. math

    andy and april shared pie.Andy ate 2/5 of the pie april ate 1/3 how much did they eat all together

    asked on April 6, 2015
  79. calculus

    f''(x) = (3x^3 - 5x^2 + 1) / x^2; and f(1) = 0, f(-1) = 1. So i turn f''(x) into (3x^3 - 5x^2 + 1)(x^-2) and multiply to get f''(x) = 3x - 5 + x^-2 So f'(x) = (3/2)x^2 - 5x - (1/x) + c And f(x) = (1/2)x^3 - (5/2)x^2 - ln(x) + cx + d Not really sure what to

    asked on November 3, 2012
  80. Chemistry

    Specify the number of core and valence electrons for Ti^2+ Can I just pretend that this ion is calcium and calculate the valence electrons that way? So 18 core, 2 valence?

    asked on September 15, 2012
  81. general

    What are the various long-term and short-term impacts of food wastage? Please give answers from multiple area eg. cultural,social,economics etc. Global warming I have found out about it so please give a more insightful answe

    asked on April 2, 2012
  82. Science

    Name three different agents of erosion that might move a rock once it has been weathered?

    asked on March 5, 2008
  83. Germany and China

    I need to know if Germany and China both have liability insurance and what does it cover? (need references) also driving under the influence/BAC and punishment for (both countries) are selt belts required for these countries? Thank you for using the Jiskha

    asked on March 27, 2007
  84. Education

    How are the “image of the child” and the “image of the teacher connected"?

    asked on November 25, 2015
  85. Math

    I am a 5-digit whole number. I have 4 different digits. There are no 7s or 5s and I only have one 2. My hundreds digit is the least. My tens digit is odd and is the sum of all the other digits. What number could I be?

    asked on December 13, 2010
  86. college algebra

    Find the arc of the following: f(x)=x^2-8x+15 from x=4 to x=6

    asked on September 16, 2010
  87. college algebra


    asked on August 31, 2010
  1. Math 2


    posted on April 19, 2019
  2. Social Studies


    posted on January 31, 2019
  3. Educational Tech and Online learning


    posted on December 11, 2018
  4. English Check!! The Cay

    thank yall so much I made 100 with the last answers XD

    posted on December 5, 2018
  5. Math

    thank you naitter!!

    posted on October 2, 2018
  6. science

    I used shaylans answers 100

    posted on October 2, 2018
  7. marketing


    posted on May 29, 2018
  8. Math

    Well 4 quarts equals a gallon. She filled the 2 quart pitcher 6 times, so you would multiply 2 by 6 equaling 12 total quarts. Divide that 12 by 4 and you would get 3 gallons.

    posted on April 25, 2017
  9. Finite Math

    Thank you reiny i love u

    posted on February 8, 2017
  10. math


    posted on December 7, 2016
  11. Physics

    This is correct, thanks!

    posted on October 2, 2016
  12. science

    I don't know how to solve this. Please help me!!!!!

    posted on September 28, 2016