Popular questions and responses by jose
  1. Statistics

    Suppose that grade point averages of undergraduate students at one university have a bell-shaped distribution with a mean of 2.62 and a standard deviation of 0.43. Using the empirical rule, what percentage of the students have grade point averages that are

    asked on September 18, 2017
  2. physics

    A 5.75 µC and a -2.61 µC charge are placed 19.8 cm apart. Where can a third charge be placed so that it experiences no net force?

    asked on January 25, 2011
  3. math

    What is the unit rate? 1500 meters in 6 seconds?

    asked on July 10, 2013
  4. math

    Determine if the Mean Value Theorem for Integrals applies to the function f of x equals the square root of x on the interval [0, 4]. If so, find the x-coordinates of the point(s) guaranteed to exist by the theorem.

    asked on November 16, 2018
  5. math

    Renee is a sales associate at a store. She earns $80 a week plus a 15% commission on her sales. Last week, she sold $200 worth of items. What is the total amount Renee earned for the week? How much did she earn from commission?

    asked on April 15, 2015
  6. physics

    As shown in the diagram, a bullet of mass 7.0 g strikes a block of wood of mass 2.1 kg. The block of wood is suspended by a string of length 2.0 m, forming a pendulum. The bullet lodges in the wood, and together they swing upward a distance of 0.40 m from

    asked on January 4, 2016
  7. Pre-Calculus

    Two polynomials P and D are given. Use either synthetic or long division to divide P(x) by D(x),and express the quotient P(x)/D(x) in the form P(x)D(x) = Q(x)+ R(x)D(x) . P(x) = 6x4 − 3x3 + 29x2, D(x) = 3x2 + 13

    asked on September 14, 2014
  8. College Chemistry

    For each trial, enter the amount of heat lost by the calorimeter, qcalorimeter. Be careful of the algebraic sign here and remember that the change in temperature is equal to the final temperature minus the initial temperature. Report your answer using 4

    asked on April 12, 2013
  9. math

    Irrational Perimeter and a Rational Area of a rectangle. a can = b can = Or, if it's impossible, explain how. Help me I'm confused.

    asked on August 12, 2016
  10. math

    Suppose a 25-foot ladder is leaning against a wall making a 63 degree angle with the wall. How high up th wall is the end of the ladder?

    asked on March 19, 2015
  11. Chemistry

    1. Which metal is the most easily oxidized? A.) highly active metal *B.) moderately active metal C.) slightly active metal D.) an inactive metal 2. What happens in a voltaic cell? *A.) Chemical energy is changed to a electrical energy. B.) Electrical

    asked on March 27, 2013
  12. chemistry

    Calculate the temperature change in the water upon complete melting of the ice. Hint: Determine how much heat is absorbed by the melting ice and then use q =mC*Delta T to calculate the temperature change of the 314 g of water. under the following

    asked on November 17, 2010

    If the current in a 100 mH coil changes steadily from 25.0 A to 10.0 A in 375 ms, what is the magnitude of the induced emf?

    asked on April 11, 2010
  14. science

    What kind of terrain and landforms would indicate the prior existence of a valley glacier.

    asked on June 28, 2019
  15. Chemistry

    If 100g of Methane are burned in this reaction to cook my dinner, How many moles of Carbon dioxide are produced?

    asked on March 21, 2019
  16. Physics

    Suppose a gust of wind has carried a 52-μm-diameter dust particle to a height of 340 m. If the wind suddenly stops, how long will it take the dust particle to settle back to the ground? Dust has a density of 2700 kg/m^3, the viscosity of 25∘C air is

    asked on March 5, 2019
  17. Stoichiometry


    asked on February 17, 2017
  18. statistics

    If boys and girls are equally likely to be born, what is the probability that in a randomly selected family of 6 children, there will be at least one boy? (Find the answer using a formula. Round your answer to three decimal places.)

    asked on March 30, 2014
  19. Math

    Write a measurement division story problem for 5/12 divided by 1/6

    asked on October 16, 2019
  20. math seriously help me

    Sally graphs the geometric sequence an = 2(3)n - 1 on a coordinate plane where she plots an on the y-axis and n on the x-axis. This graph is the same as the graph of which type of function? A) cubic B) linear

    asked on May 5, 2017
  21. physics

    A ball is projected upward at time t = 0 s, from a point on a flat roof 10 m above the ground. The ball rises and then falls with insignificant air resistance, missing the roof, and strikes the ground. The initial velocity of the ball is Consider all

    asked on October 11, 2015
  22. science

    which of the following is the best course of action when it comes to using natural resources

    asked on November 7, 2013
  23. statistics

    A company is considering installing new machines to assemble its products. The company is considering two types of machines, but it will buy only one type. The company selected eight assembly workers and asked them to use these two types of machines to

    asked on January 23, 2011
  24. physics

    A thin 12 cm long solenoid has a total of 460 turns of wire and carries a current of 2.1 A. Calculate the magnitude of the field inside near the center.

    asked on April 3, 2010

    Question What are the differences between an internal proposal and an external proposal? Also I need to summarize why the two proposal types are different in terms of the following elements: Consider the following scenario: Management at your project

    asked on May 25, 2009
  26. english

    In the United States, cell phones are a very popular item. What are all VERBS both "Action" and "Be."

    asked on May 16, 2016
  27. trig

    Find the component form of v and sketch the specified vector operations geometrically, where u = 4i − j, and w = i + 5j. v = −u + w v = ( , )

    asked on November 2, 2015
  28. Ela

    Write each phrase below to make it a plural or singular possessive or plural possessive.the backpacks belonging to the girls,the covers of the bookd

    asked on October 26, 2015
  29. pcc

    A volume of 40.0mL of aqueous potassium hydroxide (KOH) was titrated against a standard solution of sulfuric acid (H2SO4). What was the molarity of the KOH solution if 21.7mL of 1.50 M H2SO4 was needed? The equation is

    asked on July 15, 2013
  30. Physics please help!!

    A satellite is in a circular orbit very close to the surface of a spherical planet. The period of the orbit is 2.23 hours. What is density of the planet? Assume that the planet has a uniform density.

    asked on March 4, 2013
  31. SCI/275

    Compare and contrast the western world view with the deep ecology world view. Challenge one of the world views presented in Visualizing Environmental Science. Which world view is closest to your own? Why?

    asked on December 6, 2012
  32. applied chemistry

    A 50.0mL volume of AgNO3, solution contains 0.0285 mol AgNO3 (SILVER NITRATE). What is the molarity of the solution?

    asked on March 7, 2012
  33. Language arts and writing

    The first compact microwave ovens were sold in 1960. Everybody didn't use them until the 1980's.

    asked on February 6, 2012
  34. verbs

    kris enjoys action movies at the theatre

    asked on August 2, 2011
  35. chem

    How many liters of 12.3 molar NaOH stock solution will be needed to make 12.4 liters of a 1.2 molar NaOH solution? Show the work used to solve this problem.

    asked on April 6, 2011
  36. physics

    In the figure , the total resistance is 10.0 kOmega, and the battery's emf is 28.0 V. If the time constant is measured to be 40.0 mu s. Calculate the total capacitance of the circuit.Calculate the time it takes for the voltage across the resistor to reach

    asked on March 2, 2011
  37. Chemistry

    How much water can be produced from the complete reaction of 2.56 L of oxygen gas, at STP, with hydrogen gas answer in units of g.

    asked on March 29, 2011
  38. Chemistry

    How much water can be produced from the complete reaction of 2.56 L of oxygen gas, at STP, with hydrogen gas answer in units of g.

    asked on March 29, 2011
  39. math

    Write three number that are greater than 1,543,000 but less than 1,544,000

    asked on October 18, 2010
  40. dictionary

    What does the italicized n stand for in a dictionary entry

    asked on September 24, 2008
  41. chemistry

    Which of the following statements is NOT true in regards to water, ethanol, and isopropanol? A. Water has the highest boiling point. B. Two lone pairs of electrons are assigned to the oxygen in each Lewis structure of all three molecules. C. Dispersion

    asked on February 4, 2008
  42. math

    wat is1/2 plus 1/3

    asked on December 17, 2007
  43. Physics

    A airplane has a speed of 290 km/h and is driving at an angle of 30 degrees below the horizontal when the pilot releasese a radar decoy. The horizontal distance between the release point and where the decoy hits the ground is 700m. a) How long is the decoy

    asked on October 24, 2006
  44. math

    Find the equation of the line of best fit for the points (-4,10) (-1,5)(2,-1)(3,-6)(5,-7)

    asked on June 25, 2018
  45. Math

    What is the work for the problem 61,125 divided by125

    asked on September 5, 2017
  46. math

    two concentric circle with the ratio of radii as 2:3, what is the ratio of the area? thanks

    asked on December 10, 2016
  47. Math

    A marine surveyor uses a rangefinder and a compass to locate a ship and an island in the vicinity of the coast on which she stands. The rangefinder indicates that the island is 379 ft from her position and the ship is 600 ft from her position. Using the​

    asked on October 29, 2016
  48. financial math

    Rate: 7% Payments: 360 @ $665.31 Total Interest: $139,511.60 How much will be repaid for this loan? $ 239,511.60239,502.40100,000.00 What percentage of this total is total interest? What will be the average amount per payment for interest? $

    asked on October 18, 2016
  49. physics

    A mass m = 0.068 kg of benzene vapor (Lv = 3.94x105 J/kg) at its boiling point of 80.1°C is to be condensed by mixing with water at 45.0°C. What is the minimum mass of water required to condense all of the benzene vapor? Assume the mixing and

    asked on April 10, 2016
  50. Math

    Marisa says that reflecting a point across the x axis and then reflecting its image across the y-axis will produce the same final image as just reflecting the original point across the line y equals x is this true?

    asked on February 23, 2016
  51. math

    To date, Jay Ward has xumulative earnings of $ 107,600. This week he is paid $3,000. What is the total amount of Social Security tax for this week? Assume a rate of 6.2% on $110,100 for Social Security and 1.45% for Medicare.

    asked on November 28, 2015
  52. Math

    x/(x+1) - 2/(x-1)= 1 I have been trying to solve it but I do not know the steps to solve it.

    asked on September 27, 2015
  53. algebra

    whats the difference between a 16 ounce brick and a carpenter?

    asked on August 18, 2015
  54. Physics

    An airplane flies 220 km due east, makes a right-angle, and then flies 400 km due north. Find the magnitude of the plane's displacement from it's starting point. Neglect the culrvature of the earth

    asked on September 14, 2014
  55. math

    There are 2 leaves along 3 in.of an ivy vine. There are 14 leaves along 15 in. of the same vine. How many leaves are there along 6 in. of the vine?

    asked on March 27, 2014
  56. Math

    Becca wants to make a giant cherry pie to try to break the world record. If she succeeds in making a pie with a 20 foot diameter, what will be the total distance around the pie?

    asked on March 16, 2014
  57. Math

    Pam served her apple pie on a 13 inch diameter dish. She wanted to tie a ribbon around the dish to make it a little more festive. How long does the ribbon need to be in order to fit around the dish?

    asked on March 16, 2014
  58. geometry

    Given the equation of the circle (x – 9)2 + y2 = 484 , where is the center of the circle located at?

    asked on November 12, 2013
  59. tax

    Business Investigation Expenditures. During January and February of the current year, Big Bang LLC incurs $3,000 in travel, feasibility studies, and legal expenses to investigate the feasibility of opening a new entertainment gallery in one of the new

    asked on July 31, 2013
  60. Humanities

    What are peer reviewed articles/journals?

    asked on February 12, 2013
  61. math

    if a house square feet is 3,546 sq what is the perimeter of the house

    asked on December 19, 2012
  62. chem

    why is hydrogen gas placed in the 1A column of the periodic table?

    asked on November 8, 2012
  63. Physics

    A car starts from rest and accelerates uniformly to a speed of 50km/h in 18s. If the wheels of the car are 70cm in diameter. Calculate; a.The final angular velocity of the wheels b.angular acceleration

    asked on March 22, 2012
  64. chemistry

    Calculate the relative molecular mass of a gas if a 500cm3 sample at 20¢ªC and 1 atomic mass of 0.66g

    asked on June 21, 2011
  65. calculus

    A cylindrical metal can with an open top is to be constructed. the can must have a capacity of 24pie cubic inches. the metal used to contruct the bottom of the can costs 3 times as much as the metal in the rest of the can. Find the dimensions(radius and

    asked on January 17, 2011
  66. algebra

    one plane left an airport at 11:30 am. A second plane, traveling at 320 mph left the same airport at 1:00 pm and overtook the first plane at 4:30 pm. At what speed was the first plane traveling?

    asked on October 17, 2010
  67. math

    A video game store charges a monthly membership fee of $7.50 but the charge to rent each movie is only $1.00 per movie. Another store has no membership fee but it costs $2.50 to rent each movie. How many movies need to be rented each month for the total

    asked on September 26, 2010
  68. IPC


    asked on April 14, 2010

    The magnetic field inside an air-filled solenoid 39 cm long and 2.0 cm in diameter is 0.85 T. Approximately how much energy is stored in this field?

    asked on April 11, 2010

    What is the inductance L of a 0.40 m long air-filled coil 3.2 cm in diameter containing 10,000 loops?

    asked on April 11, 2010

    What is the inductance of a coil if the coil produces an emf of 8.20 V when the current in it changes from -28.0 mA to +31.0 mA in 45.5 ms?

    asked on April 11, 2010

    A 14 cm diameter circular loop of wire is placed in a 0.58 T magnetic field. (a) When the plane of the loop is perpendicular to the field lines, what is the magnetic flux through the loop? (b) The plane of the loop is rotated until it makes a 36° angle

    asked on April 3, 2010
  73. chemistry

    what is the maximum number of grams of PH3 that can be formed when 6.2 g of phosphorus reacts with 4.0 g of hydrogen to form PH3

    asked on March 21, 2010
  74. algebra

    what is 4 to 4th power and show the process?

    asked on November 10, 2009
  75. chemistry

    how do i convert these 0.25g = how many cgs 400 cm^3 = how many Ls and 400 cm^3 = how many m^3s?

    asked on February 11, 2008
  76. science

    Which of the following is NOT found in animal cells? a. cell wall b. cell membrane c. organisms d. prokaryotes I think the answer is cell wall, but I'm not sure. Cell walls are only found in plant cells as far as I know. yes, a

    asked on March 25, 2007
  77. math

    what is the difference between translation , rotation, relections, and dilation in 8 grade work In 8th grade talk, I recommend you check the examples in your book. OR, if you put your definitions here, I can critique them.

    asked on January 28, 2007
  78. Math

    You’ve decided to paint your room instead of using wallpaper. You know you will need to apply two coats of paint to fully cover the walls. One gallon of paint will cover 400 square feet. How many quarts of paint will you need to purchase if there are 4

    asked on May 30, 2020
  79. Geometry

    In right triangle ABC,

    asked on May 16, 2020
  80. Math

    Fraction equal to 1 that has a denominator of 12

    asked on April 9, 2020
  81. History

    What can you infer about the northeastern states by looking at the maps ?

    asked on March 30, 2020
  82. Chemistry

    The molar heat capacity of C6H6(ℓ) is 136J/mol · ◦C and of C6H6(g) is 81.6 J/mol · ◦C. The molar heat of fusion for benzene is 9.92 kJ/mol and its molar heat of vaporization is 30.8 kJ/mol. The melting point of benzene is 5.5◦C, its boiling point

    asked on March 19, 2020
  83. science

    A student throws a ball upwards from the ground level where gravitational potential energy is zero. At a height of 15 m, the ball has a potential energy of 60 J, and is moving upwards with a kinetic energy of 40 J. Ignoring air resistance, the maximum

    asked on December 5, 2019
  84. Math

    A sum of money was shared among Aaron,Ben,and Charles in the ratio 2:5:7.If Charles's share was $1,180 more than Aaron's share,what was the original sum of money shared?

    asked on November 13, 2019
  85. Algebra

    What is the answer for 2-11×^2-8×+6×^2

    asked on May 3, 2019
  86. Chemistry

    How many grams of Oxygen are needed to react with 100g of Nitrogen monoxide?

    asked on March 21, 2019

    A car, moving along a straight stretch of highway, begins to accelerate at 0.024 m/s 2 . It takes the car 61.8 s to cover 1 km. How fast was the car going when it first began to accelerate?

    asked on February 2, 2019
  88. geometry

    the perimeter of a angle is 40 inches the ratio of lengths is 3:4:6: find the shortest side lengths

    asked on January 22, 2019
  89. Math

    Micah has a new remotely controlled car that has a circular range with a radius of 30 feet. What is the area of the circular range?

    asked on January 16, 2018
  90. Chemsitry

    A student reacts 0.506 grams of aluminum with excess KOH and H2O according to reaction one from the lab manual. 2Al + 2KOH +6H2O ---> 2K[Al(OH)4]+3H2 Enter your answers in numerical format. How many moles of aluminum was reacted? How many moles of

    asked on October 28, 2017
  91. Chem 1C

    the hydrolysis of sucrose is a part of the digestive process. to investigate how strongly the rate depends on our body temperature, calculate the rate constant for they hydrolysis of sucrose at 35C given that k=1.0 mL/(mol*s) at 37C and that the Ea=108

    asked on October 17, 2017
  92. math

    Sally graphs the geometric sequence an = 2(3)n - 1 on a coordinate plane where she plots an on the y-axis and n on the x-axis. This graph is the same as the graph of which type of function? A) cubic B) linear

    asked on May 5, 2017
  93. algebra

    find the periodic payments necessary to accumulate the amount given in a sinking fund. Assume end of period deposits and compounding at the same intervals as deposits. $70,000 in a fund 7% per year, monthly payments for 5 years Thank you your time is

    asked on March 7, 2017
  94. Geometry

    At a campground, a rectangular fire pit is 5 feet by 4 feet. What is the area of the largest circular fire that can be made in this fire pit? Use 3.14 for π. Round to the nearest square inch.

    asked on February 9, 2017
  95. Math

    On friday,a cold front came through the city at 8am that dropped the outside temperature at an average rate of 2 degrees every half hour. Which integer represents the change in temperature from 8am to 11am

    asked on December 31, 2016
  96. math

    Two cars leave Kansas City at the same time. One car is moving east and the other west. After 5 hours, the cars are 575 miles apart. One car is traveling 15 miles per hour faster than the other. Let S = the speed of the slower car and F = the speed of the

    asked on December 18, 2016
  97. math-circles

    The area of two circles are in a ratio of 4:9. If both radii are integers, and r(1) - r(2) = 2, what is the radius of the larger circle?

    asked on December 16, 2016
  98. math

    In pallelogram, ABCD, E is the midpoint of DC, AE intersecs BD at point O, the area of triangle DOE is 12cm^2, what is the area of triangle AOB?

    asked on December 16, 2016
  99. triangles

    In triangle ABC, AB = 12, AC= 9, D is a point on AC, AD = 3. E is a point on AB, so that triangle ADE is similar to ABC, what is the length of AE? (two different answers)

    asked on December 10, 2016
  100. Math.

    two concentric circle with the ratio of radii as 2:3, what is the ratio of the circumferences

    asked on December 10, 2016


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