Popular questions and responses by Ethan
  1. Math | Algebra

    Brand A granola is 25​% nuts and dried fruit and brand B granola is 20​% nuts and dried fruit. How much of sweet item A and sweet item B should be mixed to form a 20-lb batch of sweets that is 23​% nuts and dried​ fruit?

    asked on December 14, 2016
  2. Chemistry

    Consider the voltaic cell Zn(s) + Cu{2+}(aq)--> Zn{2+}(aq)+Cu(s) {}=charge Under standard conditions, what is the maximum electrical work, in Joules that can accomplish if 60 g of copper is plated out?

    asked on April 15, 2012
  3. Calculus

    If a ball is thrown in the air with a velocity 44 ft/s, its height in feet t seconds later is given by y = 44t - 16t2. (Round your answers to one decimal place.) (a) Find the average velocity for the time period beginning when t = 2 and lasting 0.5 second.

    asked on January 17, 2011
  4. Math

    A train leaves the station and travels north at a speed of 75 mph. Two hours later, a second train leaves on a parallel track and travels north at 125 mph. How far from the station will they meet?

    asked on July 10, 2018
  5. Statistics

    8. A tetrahedron shaped die gives one of the numbers 1, 2, 3, 4 with equal probabilities. We roll two of these dice and denote the two outcomes by X1 and X2. Let Y1 =(minpX1, X2) and Y2 = |X1 - X2|. (a) Find the joint probability mass function of X1 and

    asked on March 3, 2019
  6. Chemistry

    A voltaic cell utilizes the following reaction and operates at 298K 3Ce{4+}(aq)+Cr(s)--->3Ce{3+}(aq)+Cr{3+}(aq) {}=Charge What is the EMF of this cell under standard conditions? What is emf of cell when [Ce{4+}]=2.1M, [Ce{3+}]=.13M, and [Cr{3+}]=2.0*10^-2

    asked on April 15, 2012
  7. Literacy

    What is the probability of the spinner landing on red or yellow

    asked on February 13, 2020
  8. Chem

    To prepare 20 mL of 15 mM NaCl, how much NaCl would you need to weigh? 2. To prepare 5 mL of 1 mM glucose, how much glucose would you need to weigh? How do you prepare 1 mL of 1 mM NaCl using the NaCl solution you prepared in (1)? 3. How do you prepare 1

    asked on September 30, 2018
  9. Physics

    A crew team rows a boat at a rate of 20 km/h in still water. In practice on a river, the team rows for 30 minutes up the river (against the current), and then for 30 minutes down the river (with the current). The speed of the river current is 1.5 km/h. How

    asked on January 19, 2018
  10. o level mathematics

    in a class of 35, all the pupils play at least 1 game, volleyball, netball and hockey. volleyball only 10, those who play netball only 5, those who play hockey only 3, if 2 play all 3 games how many altogether play volleyball

    asked on March 6, 2015
  11. Physics

    A girl sitting on a merry-go-round moves counterclockwise through an arc length of 3.36m. If the girl’s angular displacement is 2.96 rad, how far is she from the center of the merry-go-round? Answer in units of m.

    asked on March 28, 2012
  12. algebra

    (x4 − 9x + 5x7) + (5x − 10 + 3x4 − 2x2)

    asked on October 12, 2019
  13. Physics

    A certain diving bell for use in the ocean has a square window measuring 0.250 m on each side. The inside of the bell is pressurized and maintained at a pressure of 2.00 atm. The mass density of seawater is 1025 kg/m3. How deep can this bell be lowered

    asked on December 6, 2015
  14. Physics

    If aluminum (Al), with an atomic weight of 27, combines with oxygen (O), with an atomic weight 16, to form the compound aluminum oxide (Al2O3), how much oxygen would be required to react completely with 57g of aluminum ? Answer is in grams.

    asked on April 10, 2020
  15. Math

    David and Coda-Wayne are walking a trail. Ted walks 3.1 kilometers farther than David. Write an expression and solve for X.

    asked on December 3, 2018
  16. Algebra

    The foot of an extension ladder is 9ft from a wall. The height that the ladder reaches on the wall and the length of the ladder are consecutive integers. How long is the ladder?

    asked on June 15, 2018
  17. Math

    An architect is designing an atrium for a hotel. The Atrium is to be rectangular with a perimeter of 728ft of brass piping. What dimensions will maximize the area of the atrium?

    asked on June 12, 2018
  18. Physics

    A 20-kg child running at 1.4 m/s jumps onto a playground merry-go-round that has inertia 180 kg and radius 1.6 m. She is moving tangent to the platform when she jumps, and she lands right on the edge. Ignore any friction in the axle about which the

    asked on October 19, 2015
  19. math

    A video rental company offers a plan that includes a membership fee of $8 and charges $2 for every DVD borrowed. They also offer a second plan, that costs $14 per month for unlimited DVD rentals. If a customer borrows enough DVDs in a month, the two plans

    asked on April 23, 2015
  20. Physics

    A rectangular coil of wire has a dimensions of 4.9 cm by 9.7 cm and is wound with 84 turns of wire. It is turned between the pole faces of a horseshoe magnet that produces an approximately uniform field of 0.54T, so that sometimes the plane of the coil is

    asked on April 10, 2020
  21. Statistics

    Let the joint density function of the random variables X and Y be f(X,Y)(x,y)= 2xe^(x(^2)-y) for 0

    asked on March 3, 2019
  22. calculus

    Find the volume of a solid whose base is bounded by the parabola x=y^2 and the line x=9, having square cross-sections when sliced perpendicular to the x-axis.

    asked on February 3, 2017
  23. Chemistry AP

    Calculate the concentration of H3O + present in 0.377 M H2CO3. Answer in units of mol/L I know the Ka of H2CO3 is 4.3E-7. But I don't know what to do from there. (Or, I'm not getting the correct answer at least)

    asked on February 9, 2015
  24. SS

    What was the purpose of the Adams-Onis Treaty? Can some help me answer this question?? Ms. Sue??

    asked on February 6, 2015
  25. Chemistry AP

    Calculate the pH of a 0.44 M aqueous solution of NH4Cl. Kb = 1.8 × 10−5 . I've tried used the Ka=Kw/Kb equation then used the resulting 5.5e-10 in Kw=([H+][Cl-])/[NH4Cl] , using that to get the [H+], but it isn't correct and I don't know what else to

    asked on February 5, 2015
  26. Calc

    A cylindrical slime tank is placed so that the axis of the cylinder is horizontal. Find the fluid force on a circular end of the tank if the tank is half full, assuming that the diameter is 6 feet and the slime weighs 54 pounds per cubic feet?

    asked on December 14, 2013
  27. calculus

    Find the fourier series of F(x) = 1, -L

    asked on April 27, 2010
  28. chemistry

    Sodium phosphate, Na3PO4, reacts with HCl to form H3PO4 and NaCl. How many liters of 0.1 M HCl are required to react with 0.1 mole of sodium phosphate?

    asked on October 13, 2008
  29. math

    i am a closed shape made of 6 lines segment . i have 2 angle and no right angles what shape am l

    asked on March 21, 2020
  30. English

    What is the 3rd step In the multi step draft reading

    asked on September 30, 2019
  31. English

    identify the author's purpose in this passage. Be sure to include: How do you know this is the author's purpose?

    asked on December 5, 2018
  32. Geometry

    Find an equation in point-slope form for a line having the slope of m=1/6 and containing the point (-7,-3).

    asked on May 29, 2018
  33. Geometry

    What is the radius of a cylinder with a volume of 432pi cm^3 if the height of the cylinders is equal to its diameter?

    asked on May 8, 2018
  34. algrebra 2

    f(x)=2x-2 g(x)=4x+2 find (f0g)(x)

    asked on December 3, 2017
  35. Political Science

    In the Unit 4 lecture on elections, you learned about the median voter theorem. Describe the median voter theorem as it was explained in the lecture. Now, think about the political parties and leadership roles you learned about in Unit 5. How do political

    asked on April 23, 2017
  36. Calculus

    An architect wants to design a window in the shape of a rectangle capped by a semicircle. If the perimeter of the window is constrained to be 24 feet, what dimensions should the architect choose for the window in order to admit the greatest amount of

    asked on February 6, 2016
  37. Algebra

    A company charges $6 to make an pattern for an order of T-shirts and $11 for each T-shirt it produces from the pattern. The expression $11n+$6 represents the cost of n T-shirts with the same pattern.Find the total cost for 5 T-shirts with the same pattern.

    asked on November 30, 2015
  38. math

    Find the smallest positive integer n for which 126n cube root is a whole number

    asked on September 10, 2015
  39. math

    translation of the quotient of 100 and w

    asked on August 30, 2015
  40. Chemistry AP

    Calculate the pH of a 0.44 M aqueous solution of NH4Cl. Kb = 1.8 × 10−5 . I've tried used the Ka=Kw/Kb equation then used the resulting 5.5e-10 in Kw=([H+][Cl-])/[NH4Cl] , using that to get the [H+], but it isn't correct and I don't know what else to

    asked on February 5, 2015
  41. Chemistry

    Complete and balance the following equation: Cr2O7{2-}(aq)+CH3OH(aq)-->HCO2H(aq)+Cr{3+}(aq) Any feedback would be great, thank you so much.

    asked on April 14, 2012
  42. Physics

    A diver performing a double somersault spins at an angular speed of 4.5 π rad/s precisely 0.70s after leaving the platform. Assuming the diver begins with zero initial angular speed and accelerates at a constant rate, what is the diver’s angular

    asked on March 28, 2012
  43. Calculus

    The widths (in meters) of a kidney-shaped swimming pool were measured at 3-meter intervals as indicated in the figure. Use the Midpoint Rule with n = 4 to estimate the area S of the pool if a1 = 15.5, a2 = 18, a3 = 17, a4 = 14, a5 = 12.5, a6 = 12, and a7 =

    asked on November 9, 2011
  44. Math

    insert grouping symbols into 2x3^3+4 to get it to equal 4374 and 279,936.

    asked on August 23, 2011
  45. algebra


    asked on May 25, 2011
  46. Math

    H(x)= 0.002x^2+0.005x-0.029 where x is the speed of the car in miles per hour. How can I rewrite the function so that x represe the speed in kilometers per hour. [Find H(x/1.6)]

    asked on February 9, 2011
  47. Geometry

    What is the length of the midsegment of the trapezoid made by the vertices A(0, 5), B(3, 3), C(5, -2) and D(-1, 2). Show equations and all work that leads to your answer.

    asked on February 3, 2011
  48. Calculus

    factor 7x+42

    asked on January 17, 2011
  49. math

    factor 6x^2-1

    asked on January 17, 2011
  50. Calculus

    The monthly cost of driving a car depends on the number of miles driven. Lynn found that in May it cost her $410 to drive 300 mi and in June it cost her $470 to drive 600 mi. (a) Express the monthly cost C as a function of the distance driven, d, assuming

    asked on January 17, 2011
  51. Physics

    An electric vehicle starts from rest and accelerates at a rate of 2.3 m/s2 in a straight line until it reaches a speed of 17 m/s. The vehicle then slows at a constant rate of 1.4 m/s2 until it stops. (a) How much time elapses from start to stop? (b) How

    asked on January 16, 2011
  52. Physics

    (a) If the position of a particle is given by x = 16t - 7t3, where t is in seconds and x is in meters, when is the particle's velocity zero? (b) When is its acceleration a zero?

    asked on January 16, 2011
  53. chemistry

    A precipitate of calcium phosphate is formed when aqueous solutions of sodium phosphate and excess calcium chloride are mixed. If 100.0 mL of 1.5 M sodium phosphate solution is the limiting reactant, how many grams of calcium phosphate can be expected?

    asked on September 3, 2010
  54. science

    Which of the following would be the limiting reagent in the reaction shown below? There are 50 molecules of O2 and 50 molecules of H2. 2H2(g) + O2(g) ==> 2H2O(g)

    asked on November 13, 2009
  55. science

    what is the volume of water ? how do I describe this ?

    asked on November 10, 2009
  56. Math word problem

    you buy a bottle of juice for $1.00. The juice costs 90 cents more than the empty bottle. How much does the empty bottle cost? The answer is not 10 cents.

    asked on January 13, 2009
  57. pre-cal

    find all solutions in interval [0,2pi] tan²x = -3/2 secx This question may look tricky, but its actually quite simple. First: rearrange the pythagorean identity tan²x+1=sin²x so that it reads tan²x=sin²x-1 Then replace the tan²x in the original

    asked on May 16, 2007
  58. Finance/Math

    1. Present Values. Compute the present value of a $100 cash flow for the following combinations of discount rates and times. a. r = 8 percent. t = 10 years b. r = 8 percent. t = 20 years c. r = 4 percent. t = 10 years d. r = 4 percent. t = 20 years 2.

    asked on March 19, 2007
  59. Math

    You start a search for a buried object by marking the center of a field as (0,0), with coordinates giving distances in yards. Coordinates to the north or east are positive and coordinates south or west are negative. You find nothing at (-12,8), so u try a

    asked on May 1, 2020
  60. math

    You randomly choose one of the marbles. Without replacing the first marble, you choose a second marble out of 4 marbles

    asked on April 23, 2020
  61. math

    show me how to draw a grillwith a perimeters of14 centimeters.draw all possible rectangles with a perimeter of 14 sentiment and side lengths are whole centimeters label each rectangle with its area

    asked on April 21, 2020
  62. Math

    Name the point with the given coordinates (4, -2).

    asked on April 17, 2020
  63. Physics

    A particle with a charge of 0.08 C is moving at right angles to a uniform magnetic field with a strength of 0.8 T. The velocity of the charge is 800 m/s. What is the magnitude of the magnetic force exerted on the particle? Answer is in N

    asked on March 26, 2020
  64. Physics

    Two long wires, each carrying a current of 9.6A, lie a distance of 49cm from each other. What is the magnetic force per unit length exerted by one on the other. Answer is in N

    asked on March 26, 2020
  65. Physics

    The volume of an ideal gas is increased from 0.92 m3 to 4.07 m3 while maintaining a constant pressure of 1015 Pa (1 Pa = 1 N/m2). (A) How much work is done by the gas in this expansion? W=P(V2-V1) W=1015(4.07-0.92) W= 3197.25 J (B) How much work is done by

    asked on March 23, 2020
  66. Science

    What planet is the furthest from the earth

    asked on January 5, 2020
  67. History

    What happened on black tuesday?

    asked on December 10, 2019
  68. Math

    Tony wants to use his savings at the end of March to buy video games. The games cost $35.75 each. How may games can Tony buy?

    asked on November 18, 2019
  69. History

    What was the purpose of the West India Company A. to trade American Indian slaves in Portugal and Spain B. to promote free trade between India and Great Britain C. to colonize the eastern shores of India D. to trade African slaves in the West Indies I know

    asked on November 11, 2019
  70. History

    Legacy of the Assyrian Empire?

    asked on October 20, 2019
  71. math


    asked on September 18, 2019
  72. English

    in his famous speech at the march on washington in 1963, dr. martin luther king jr. said, i have a dream that my four little children will one day live in a nation where they will not be judged by the color of their skin but by the content of their

    asked on December 17, 2018
  73. English

    What does Taylor want young people to "know and understand"?

    asked on December 17, 2018
  74. Language arts

    List some important ideas that the cay includes. Why did you choose those ideas?

    asked on December 10, 2018
  75. Math

    An object is thrown directly downwards from a height of 60m with an initial velocity of 11m/s. What will be its velocity on impact with the ground?

    asked on December 4, 2018
  76. science

    Cypress pond

    asked on December 4, 2018
  77. Art

    Creating a portrait that embodies a person's feelings or personality involves

    asked on December 4, 2018
  78. Science

    1.What challenges does pesticides pose to biodiversity? 2.What do you think should be done and why? Can someone help me plz!! i have to write a discussion.

    asked on November 27, 2018
  79. Social studies

    What is the main topic discussed in the Analects of Confucius?

    asked on October 3, 2018
  80. Biology

    I literally cant find anything on this. What kind of epithelial tissue does bone marrow have?

    asked on October 1, 2018
  81. Chem

    To prepare 5 mL of 1 mM glucose, how much glucose would you need to weigh? How do you prepare 1 mL of 1 mM NaCl using the NaCl solution you prepared in I get you would use c=n/v and get grams. But how would you answer the second part of the question?

    asked on September 30, 2018
  82. math

    Give a real-world example of a pattern and identify the terms and the sequence. Please help me. I do not want to fail

    asked on September 26, 2018
  83. Biology

    Which of the following is NOT considered a biohazardous material? A. Blood and body fluids B. Micro-organisms C. 1 M NaCl solution D. Cell lines C?

    asked on September 11, 2018
  84. Biology

    Hey just wondering if you think my answers right, 1)Biological safety cabinets are not required when working with containment level (blank) materials a) 1, b)2, c)3, d)4 - answer a? 2)Materials in Risk Group (blank) pose the least risk to the individual

    asked on September 11, 2018
  85. Algebra 2

    find the equation of a line that is parallel to y=-1/2x+4 and passes through (-2,8)

    asked on August 13, 2018
  86. Finance

    You find the following Treasury bond quote. To calculate the number of years until maturity, assume that it is currently May 2016. The bonds have a par value of $1,000. Rate Maturity Mo/YR Bid price Ask price Chg Ask Yld 5.374 May 30 104.4991 104.6448

    asked on July 23, 2018
  87. Finance

    You have arranged for a loan on your new car that will require the first payment today. The loan is for $38,500, and the monthly payments are $690. If the loan will be paid off over the next 69 months, what is the APR of the loan? (Do not round

    asked on July 20, 2018
  88. Math

    During the first part of a trip, a bicyclist travels 56 miles at a certain speed.The return trip is made at a speed that is 6 mph slower. Total time for the round trip is 16hr. Find the bicyclist's speed on each part of the trip.

    asked on July 13, 2018
  89. Sequences

    A population of 7000 fruit flies is dying off at a rate of 8% per minute. How long will it take for only 700 fruit flies to remain alive?

    asked on July 2, 2018
  90. Math

    A train leaves a station and travels north at a speed of 75mph. Two hours later, a second train leaves on a parallel track and travels north at 125mph. How far from the station will they meet?

    asked on June 11, 2018
  91. Geometry


    asked on June 2, 2018
  92. Health

    Is it normal not to have nocturnal emissions?

    asked on May 25, 2018
  93. LA

    @Ms.Sue Im a person that was looking to help people in la and i found a post that gave all the answers to the connexus page La and the way i reconize it is when i was in 8th that was the program i used, can you shut down the post it was posted at Friday,

    asked on May 22, 2018
  94. Math-Pre-Calc

    Suppose that Mr. X will be giving away a golden homework pass to one student in each class. The recipient of this pass is excused from homework all year. He has developed a unique system for determining who will get the pass. 1. First, he wants all

    asked on March 29, 2018
  95. math

    what is the rate of discount if a sweater regularly priced at $45. and sold for $36.

    asked on March 16, 2018
  96. Geometry ASAP

    What is the length of the hypotenuse of a 30-60-90 triangle with a longer leg of length 16m?

    asked on March 16, 2018
  97. Social Studies

    What is a reason that the Missouri Compromise did not have lasting effects? Please Help A.It only applied to the lands of the Louisiana Purchase. B.It only applied to the lands of the Mexican Cession. C.It relied on popular sovereignty. D.It limited the

    asked on February 27, 2018
  98. Chemistry 1 Honours

    When copper(II) nitrate reacts with sodium hydroxide, copper (II) hydroxide is produced. How many grams of Cu(OH)2 can be prepared from 12.7g of Cu(NO3)2 and excess NaOH?

    asked on February 4, 2018
  99. algrebra 2

    g(n)=-4n+2 h(n)=3n+3 Find (g0h)(n)

    asked on December 3, 2017
  100. Chemistry

    A 0.8870-g mixture of sodium chloride and potassium chloride is dissolved in water and silver nitrate is added. The AgCl that precipitates has a mass of 1.913 g. Calculate the percent by mass of potassium in the initial mixture。

    asked on November 12, 2017


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