joel

Popular questions and responses by joel
  1. Business Calculus

    An ice cube that is 3 cm on each side is melting at a rate of 2 cm cubed per minute. how fast is the length of the side decreasing?

    asked on October 21, 2010
  2. physics

    A cage descends a mine shaft with an acceleration of 0.5 m/s2. After the cage has travelled 25 metres, a stone is dropped from the top of the shaft. Determine : 1. the time taken by the stone to hit the cage, and 2. distance travelled by the cage before

    asked on December 31, 2014
  3. Mathematics

    calculate the tax paid by a single person earning #110 600per annum

    asked on July 28, 2020
  4. physics

    A flywheel is making 180 r.p.m. and after 20 seconds it is running at 140 r.p.m. How many revolutions will it make, and what time will elapse before it stops, if the retardation is uniform ?

    asked on December 31, 2014
  5. geometry

    What is the ratio for the surface areas of the cones shown below, given that they are similar and that the ratio of their radii and altitudes is 4:3?

    asked on March 6, 2018
  6. Math

    A doctor orders a dosage of 5 ml of medicine every 4 hours for 8 days how many fluid ounces of medicine should be purchased Help sole

    asked on April 27, 2018
  7. Math

    Python length complete chart Yards_____ feet 29 inches______ Please help solve

    asked on April 23, 2018
  8. Principles of Management

    Question 1 of 20 5.0 Points Which of the following is NOT a benefit of planning? A. Helps you check on your progress B. Helps you think ahead C. Helps you cope with uncertainty D. Helps you compare your results to a standard Reset Selection Question 2 of

    asked on April 22, 2013
  9. maths

    Prove that in any triangle ABC Sin2A+Sin2B+Sin2C/SinA+SinB+SinC=8Sin(A/2)Sin(B/2)Sin(C/2)

    asked on September 24, 2016
  10. math

    A stunt motorcyclist makes a jump from one ramp 20 feet off the ground. The jump between ramps can be modeled by y= -1/640x^2 + 1/4x +20 where x is the horizontal distance (in feet) and y is the height above ground (in feet). I think a is 20 feet, but I

    asked on September 24, 2013
  11. Maths

    Cynthia’s afternoon train normally arrives at her station at 5:30 pm each day, where she is picked up by Alan and driven home. One day she was on an earlier train which arrived at 5 pm, and she decided to walk in the direction Alan was coming from home.

    asked on March 9, 2017
  12. Chemistry

    What is a photon? Several selections may be correct. Has an energy of equal to hν. Is a unit of electromagnetic radiation. Is a part of the electromagnetic spectrum. Is usually called visible light. None of these.

    asked on March 14, 2011
  13. Statistics

    The amount of fill(weight of contents)put into a glass jar of spaghetti sauce is normally distributed with mean=850g and standard deviation=8g.the probability that a random sample of 24 jars has a mean weight greater than 848g is?need help

    asked on March 23, 2011
  14. math

    I am a 2-digit number. My ones is 3 more than my tens and the sum of my digits is 11. What number am I ?

    asked on November 24, 2017
  15. Maths

    Prove That Sin2A+ Sin2B +SIN2C/sinA+SINB+SINC=8sinA/sinB/2COSC/2

    asked on July 28, 2016
  16. Maths

    Prove that cos3x/cosx-cos6x/cos2x=2(cos2x-cos4x)

    asked on July 28, 2016
  17. geometry

    Write a two-column proof. Given: 7y = 8x – 14; y = 6 Prove: x = 7

    asked on October 12, 2012
  18. english

    Which of the sentences below is an excerpt taken from "In Another Country" by Ernest Hemingway is an example of irony? A. My knee did not bend and the leg dropped straight from the knee to the ankle without a calf, and the machine was to bend the knee and

    asked on February 21, 2017
  19. Chemistry

    2. In a calorimeter, 40.0g water at room temperature (20.4 C) was mixed with 60.0 g of water that was initially 48.9 C. The resulting mixture reached a maximum temperature of 37.3 C. Calculate each of the following. a) The heat released by the hot water.

    asked on April 16, 2013
  20. math

    if i have a book of 30 pages and i want to number each pages what will be the digit for the thirty pages

    asked on February 12, 2013
  21. college trig word problem

    A Ferris wheel has a radius of 25 feet.The wheel is rotating at two revolutions per minute.Find the linear speed, in feet per minute, of a seat on this ferris wheel.

    asked on December 15, 2012
  22. Maths

    Mr Zubir bouught a pair of pants, a shirt and a coat. The pair of pants and shirt costs $100.90. The pants and coat costs $244.50. The coat costs 5 times as much as the shirt. How much did Mr Zubir pay for his coat?

    asked on August 14, 2011
  23. lit

    What did the philosopher Aristotle mean when he said, "To perceive is to suffer"? Did I punctuate correctly?

    asked on May 10, 2011
  24. History

    A more unified African American culture began to emerge in the early decades of the nineteenth century because? the Gullah dialect spread to the new slave territories in the Old Southwest. the rapid transfer of slaves from other regions into the Lower

    asked on November 29, 2010
  25. Maths

    Prove By induction that sinx + sin3x + sin5x +.... Sin(2n-1) =sin^2(nx)/sin3x

    asked on September 7, 2016
  26. science

    light that has a frequency of 1.5 x 1015 Hz.

    asked on October 9, 2015
  27. chem

    Solutions of sodium carbonate and silver nitrate react to form solid silver carbonate and a solution of sodium nitrate. A solution containing 3.10 of sodium carbonate is mixed with one containing 4.43 of silver nitrate. How many grams of silver nitrate are

    asked on February 23, 2015
  28. Chemistry

    You wish to increase the carbon content of a slab of steel by exposing it to a carburizing atmosphere at elevated temperature. The carbon concentration in the steel before carburization is 379.0 ppm and is initially uniform through the thickness of the

    asked on December 14, 2012
  29. LIT

    Dresden was a German city destroyed by the allies in WWII. Which of the following most likely describes the allusion to Dresden? A Dresden was the center for the production of weapons that supported the German war effort. B Dresden was a city rich with old

    asked on May 17, 2011
  30. Calculus - Related Rates

    Bacteria are growing in a circular colony one bacterium thick. The bacteria are growing at a constant rate, thus making the area of the colony increase at a constant rate of 12 mm sq. per hour. Find an equation expressing the rate of change of the radius

    asked on November 29, 2009
  31. Algebra

    6x²y³ + 9x²y³ 15x²y³ ------------- = ---------- 3x²y² 3x²y² = (15/3) (x²/x²) (y³/y²) = 5y Just want it to know if is correct, but don't y³ + y³ = 2y³? I'm confused now. Can someone please help? yes, the answer is 5y and yes, y³ + y³ =

    asked on August 15, 2007
  32. CHemistry

    Which one of the following is expected to be the strongest Lewis acid? Fe, Fe+, Fe2+, Fe3+ Which do you think would accept electrons the easier? Fe(s) or Fe^+? Do that same kind of logic on the others one by one.

    asked on April 27, 2007
  33. Algebra 1

    how do i graph x + y = 1 put y on one side y=-x+1 im doing an online test and its asking me to find the equation that matches the graph. But im not sure how to figure it out. well the graph should have a negative slope with 1 as y-intercept look for a

    asked on March 20, 2007
  34. Social Studies

    What is Nunavut's nickname and motto? Scroll down to the weather section of this site for Nunavut's nickname. (Broken Link Removed) This site has its motto. http://homeschooling.about.com/library/blcanumotto.htm

    asked on February 8, 2007
  35. Math

    I bought a new Keurig coffee pot for $130.00, which include 6% sales tax. What was the original price of the Keurig?

    asked on March 11, 2020
  36. Chemistry

    For the following reaction,determine the amount of agcl formed (collected in laboratory) when 10.24 g of kcl react with excess agno3 to produce agcl and kno3 with a 77.24% yield.

    asked on September 29, 2018
  37. math

    how many numbers are greater than 22 but less than 32?

    asked on November 24, 2017
  38. math

    c. What do the slope and y-intercept mean in the context of this problem? Hint: What do you pay when you step into the cab?

    asked on December 6, 2016
  39. Math

    Let y=e^(cos^-1x) for modx

    asked on November 30, 2016
  40. Social studies

    why does the cartoon from the bank war 1832 portrat president jackson as a king

    asked on November 22, 2016
  41. Math

    Parmjit has 8 base ten blocks. She has at least one of each type of block. The value of her blocks is between 400 and 600. What blocks could she have? Find the possible answers using an organized list.

    asked on October 13, 2016
  42. Maths

    Prove That Sin2A+SIN2B+SIN2C/SINA+SINB+SINC=8SinA/2SINB/2SINC/2

    asked on July 28, 2016
  43. physics

    A locomotive is running at a constant speed of 100 km/ h. The diameter of driving wheels is 1.8 m. The stroke of the piston of the steam engine cylinder of the locomotive is 600 mm. Find the centripetal acceleration of the crank pin relative to the engine

    asked on December 31, 2014
  44. Physics

    1 Angstrom = how many Coulombs?

    asked on August 29, 2014
  45. Physics

    An infinitely long thin metal strip of width w=12cm carries a current of I=10A that is uniformly distributed across its cross section. What is the magnetic field at point P a distance a=3cm above the center of the strip? I have tried using the integration

    asked on April 4, 2014
  46. math (Algebra)

    (c+x)squared ----------------- 2y c= -8 x= 10 y= 6

    asked on April 3, 2013
  47. math

    if i have abook of 30 pages and i number each pages, how can i figure the digit number

    asked on February 12, 2013
  48. graphing question

    how do i get the slope formula of: (4,-1) and (3,-1)? Then the Point slope form:Slope=4,passes through (1,3)?

    asked on December 5, 2012
  49. Chemistry

    How do I calculate the mass of sodium carbonate required to neutralize 15-20 mL of 0.25M HCl at the stoichiometric point?

    asked on May 17, 2012
  50. physics

    How much kinetic energy does a 2000 kg traveling 70 mph have?

    asked on January 24, 2012
  51. geometry

    the amount of metal in the nut?

    asked on October 16, 2011
  52. maths

    16 similar writing pads and 24 similar jotter books are stacked in a pile. their total thickness is 14.4cm.Each writing pad is 3x as thick as each jotter book. what is the thickness of the pile of jotter books? Please show me a non-algebraic method of

    asked on August 15, 2011
  53. Math

    Abdul and his brother weigh 15.25kg. Abdul and his father weigh 72.25kg. What is Abdul's weight?

    asked on August 4, 2011
  54. english

    what is the allusion. Last year our school’s finances were in shambles. Overspending and little control over money has resulted in a situation where there is no money for new books or supplies. School officials are even wondering where they will find the

    asked on May 17, 2011
  55. Lit class

    Did I punctuate this correctly? "Daddy, why is the sky blue?" Martinique asked her father. the quotation mark goes behind the question mark right?

    asked on May 10, 2011
  56. Physics

    A 3kg mass moving initially to the right along the x axis with a speed of 8m/s makes a perfectly inelastic collision with a 5kg mass initially at rest at the origin.what fraction of the initial kinetic energy of the system is lost in the collision.what

    asked on February 2, 2011
  57. Physics

    A 3kg mass moving initially to the right along the x axis with a speed of 8m/s makes a perfectly inelastic collision with a 5kg mass initially at rest at the origin.what fraction of the initial kinetic energy of the system is lost in the collision.what

    asked on February 2, 2011
  58. Maths

    is 10*10exponent -3 a scientific notation?

    asked on January 17, 2011
  59. Physics

    Two points charges of 2uC and -6uC are located at the position(0.0)m and (0.3)m.Calculate the total electrical potential at the point (4.0)m due these two charges.

    asked on January 17, 2011
  60. Physics

    A proton is released from rest in a uniform electric field which is directed along the x axis and of magnitude E=2*10exponent5 V/m.The proton undergoes a displacement from point A at the origin to point B at x=0.2m.What is the change in the potential

    asked on January 17, 2011
  61. Physics

    if a ball is thrown straight upward and is caught 5s after being thrown,how fast must it have been going when it left the person s hand?help

    asked on January 17, 2011
  62. Physics

    A gas is taken though a single process in which its volume decreases by .25 m^3 as the temp of the gas rises 2deg C. Which of the following people are more likely to have reached the correct conclusion? a. Bob Identifies this process as adiabatic b. Jill

    asked on November 30, 2010
  63. Math

    Two sides of a triangle have the same length. The third side measures 4 meters less than twice the common length . The perimeter of the triangle is 16 meters. What are the lengths of the three sides?

    asked on November 7, 2010
  64. calculus

    find the integral of square root of 1+x^3 dx or sqrt(1+ x^3)dx

    asked on February 23, 2009
  65. Macro Economics

    Can it be considered acceptable to policy makers to have about 7 million people classified as unemployed in the U.S.? Explain.

    asked on September 30, 2008
  66. Algebra

    Ann sells apples and Beth sells oranges. Today, half the number of apples than Ann sold was fifteen less than thrice as much the number of oranges that Beth sold. I just want it to know; how do I convert it into an algebraic expression or equation? Is

    asked on August 21, 2007
  67. Chemistry

    If an equal number of moles of the weak acid HOCN and the strong base KOH are added to water, the resulting solution will be acidic, basic or neutral? There is a complicated answer and a sensible answer. Both arrive at the same answer. But here is the

    asked on April 27, 2007
  68. Physics

    Find the force of attraction b/w two equal but opposite charge of 2*10micro, if the distance between them is 25cm

    asked on February 16, 2020
  69. math

    7500 grams to the nearest gram

    asked on December 14, 2019
  70. Math

    I want to find a more efficient way for finding LCM's (Lowest Common Multiple) Can someone tell me a better way instead of trial and error? Thank you.

    asked on May 13, 2019
  71. Math

    A water tank can hold 56 5/7 litres of water. How much water is contained when it is 2/5 full?

    asked on July 26, 2018
  72. Math

    A water tank can hold 56 5/7 litres of water. How much water is contained in the tank when it is 2/5 full?

    asked on July 26, 2018
  73. Chemistry

    × a 25cm³ aliquot of ammonium iron(ii) tetraoxomanganate(vii) containing 32.9g of its salt in 250cm³ solution, needed 25cm³ of potassium tetraoxomanganate(vii) solution for a colour change to occur. what is the concentration of the potassium

    asked on July 19, 2018
  74. chemistry

    × a 25cm³ aliquot of ammonium iron(ii) tetraoxomanganate(vii) containing 32.9g of its salt in 250cm³ solution, needed 25cm³ of potassium tetraoxomanganate(vii) solution for a colour change to occur. what is the concentration of the potassium

    asked on July 19, 2018
  75. math

    prove dat Cos(18°) = 1/4√10+2√5

    asked on May 8, 2018
  76. Math

    Complete the table Yards is blank Feet= 29 Inches= 348 Help find yards Help solve

    asked on April 23, 2018
  77. math

    March 1- $550 rent (check) March 2- $286 tuition (check) March 3- $200 paycheck March 4- 275 bookstore check March 5- $60 withdrawn from ATM March 6- $40 food (debit) March 7- $45 date desert March 8- N/A March 9- $40 gas March 10 - $200 paycheck March 11

    asked on April 19, 2018
  78. math

    Week No 1 2 3 4 5 6 7 Weight change -2 -2 3 -2 -2 3 -2 Write her weight losses and gains using multiplications. Please help solve

    asked on April 19, 2018
  79. math

    . Bonita uses her debit card to withdraw $40 from her savings account every week for 7 weeks. What is the change in her account balance at the end of 7 weeks? help solve

    asked on April 19, 2018
  80. math

    A cold front moves through your hometown in January, dropping the temperature an average of 3 F per day for 5 days. Write an expression that uses multiplication to describe the changes in temperature from the start to the end. Help solve

    asked on April 19, 2018
  81. Math

    The temperature in Minot, North Dakota registered 18 degrees F. The wind chill factor made it feel negative 10 degrees. What is the difference between the actual temperature and the perceived temperature? Help solve

    asked on April 19, 2018
  82. Math

    the question is to "rotate the line the given number of degrees a about the x-intercept and (b) about the y-intercept. Write the equation of each image" and the problem is y=2x+2 ; 90 degrees and i dont know what to do

    asked on April 3, 2018
  83. geometry sem 2 APEX

    Question 1 of 10 Multiple Choice: Please select the best answer and click "submit." A closet contains 8 pairs of pants, 10 shirts, and 4 pairs of shoes. How many leaves on a tree diagram would represent all possible combinations of outfits? A. 80 B. 22 C.

    asked on March 14, 2018
  84. math

    How many centavos are equal to P2.50?

    asked on November 24, 2017
  85. math

    .) Dino gathered 72 eggs from one poultry house and 48 from another. How many more eggs did he gather from the first house?

    asked on November 24, 2017
  86. math

    I am a 2 digits number. My ones is 3 more than my tens and the sum of my digits is 11. What number am I?

    asked on November 24, 2017
  87. math

    how many centavos are equal to P2.50

    asked on November 24, 2017
  88. Maths

    If The Roots Of The Equation X^2- bx+c are square root of alpha and square root of beta .show that alpa + beta = b^2- 2c and (alpha)^2 + (beta)^2 = (b^2 -2c - sqrt of 2c)(b^2 - 2c + sqrt of 2c)

    asked on February 8, 2017
  89. Social Studies

    in 3-5 sentences describe the apportionment system for state legislative districts I cant seem to think of any please help

    asked on February 3, 2017
  90. math

    use the method of substitution to solve the following pairs of simultaneous equation. 2m+n=0,m+2n=3

    asked on January 29, 2017
  91. Social Studies

    1. What was the landscape of the country prior to Imperialism? 2. What kind of resources made the country a commodity to the colonizers? 2. Who lived there? What was their daily life like? 4. What kind of leadership and hierarchy did the civilization

    asked on December 15, 2016
  92. Maths

    If X,y,a and b are real numbers and if x+yi = a/b+cosp+isinp , show that (b^2-1)(x^2+y^2)+a^2 =2abx

    asked on October 17, 2016
  93. Math

    Parmjit has 8 base ten blocks. She has at least one of each type of block. The value of her blocks is between 400 and 600. What blocks could she have? Find the possible answers using an organized list.

    asked on October 13, 2016
  94. Maths

    Thnx Reiny & Steve 4 d help rendered in per the past questions. Plse help in this, If the line through the point y=2x+c touches the hyperbola 4(x)^2-6(y)^2=24. Show that c=+-2sqrt5.

    asked on September 25, 2016
  95. maths

    A variable tangent to the ellipse (x/a)^2 +(y/b)^2 meets the parabola y^2=4ax at L and M. Find the locus of the midpoint of LM.

    asked on September 24, 2016
  96. maths

    A Variable Tangent To The Ellipse (x/a)^2 + (y/b)^2 =1 meets the parabola y^2=4ax at L and M. Find the locus of the midpoint of L M

    asked on September 23, 2016
  97. History

    what statement best describes the government relationship with England that was in the middle colonies A. Middle colonies were all established as royal colony B.each have a different system based on the charter agreed upon with the king of England C.The

    asked on September 12, 2016
  98. Physics

    Given Two parallel plate capacitors with a seperation d(metres) in free space connected to a dc supply of volts,v. A dielectric material of thickness b(metres) is inserted between the plates so that a distance (d-b)m remains without dielectric. Show that

    asked on September 7, 2016
  99. Maths

    Plse Help how do you obtain the maximum value and minimum value of a quadratic equation like for , 1/11+8x-2x^2

    asked on August 12, 2016
  100. Maths

    Prove that 1+cosx+sinx/1-cosx+sinx=cotx

    asked on August 12, 2016

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