Most popular questions and responses by z
  1. Chemistry

    When solutions of KCl and Pb(NO3)2 are mixed, a precipitate forms. Which of the following is the balanced equation for the double replacement reaction that occurs? a. KCl(aq) + Pb(NO3)2 (aq) ¨ KNO3 (aq) + PbCl2 (s) b. KNO3 (aq) + PbCl2 (s) ¨ KCl(aq)

    asked on November 30, 2012
  2. Physics

    Adolf and Ed are wearing harnesses and are hanging from the ceiling by means of ropes attached to them. They are face to face and push off against one another. Adolf has a mass of 127 kg, and Ed has a mass of 65 kg. Following the push, Adolf swings upward

    asked on October 29, 2008
  3. Probability & Statistics

    To help consumers assess the risks they are taking, the Food and Drug Administration (FDA) publishes the amount of nicotine found in all commercial brands of cigarettes. A new cigarette has recently been marketed. The FDA tests on this cigarette yielded

    asked on March 23, 2015
  4. math

    Find the values of the trigonometric functions of t from the given information. tan(t) =1/9 terminal point of t is in Quadrant III sin(t)= cos(t)= csc(t)= sec(t)= cot(t)=

    asked on October 29, 2016
  5. math

    you are standing 15 feet from a statue the angle of the elevation from eye level to the top of the statue is 27 degrees, and the angle of depression to the base of the statue is 18 degrees. How tall is the statue? show work

    asked on May 17, 2011
  6. Geometry

    parallelogram ABCD: Angle BAC = 35 and angle BCA = 20 How can I find the measure of angle BAD and the measure of angle ABC?

    asked on April 1, 2018
  7. Physics

    A lunar lander in powered descent at 100 m above the surface of the moon slows down from a velocity of 20 m/s to 0.5 m/s at constant acceleration. Assume that the lander has a mass of 20,000 kg and that burning the fuel does not change the mass. Answer the

    asked on January 6, 2015
  8. algebra

    i need help writing this out.. You have a credit card with a balance of $754.43 at a 13.6% APR. You have $300.00 available each month to save or pay down your debts. a. How many months will it take to pay off the credit card if you only put half of the

    asked on April 29, 2019
  9. physics

    A horizontal 810-N merry-go-round of radius 1.70 m is started from rest by a constant horizontal force of 55 N applied tangentially to the merry-go-round. Find the kinetic energy of the merry-go-round after 2.0 s. (Assume it is a solid cylinder.)

    asked on November 1, 2009
  10. Physics

    Oxygen for hospital patients is kept in special tanks, where the oxygen has a pressure of 62.0 atmospheres and a temperature of 293 K. The tanks are stored in a separate room, and the oxygen is pumped to the patient's room, where it is administered at a

    asked on January 6, 2009
  11. Chemistry

    Suppose water contained some harmful volatile substance. How could you easily remove the volatile substance in a laboratory?

    asked on September 23, 2015
  12. Algebra

    An 80 x 120 foot rectangular garden is surrounded by a strip of equal width that has the same area as the garden. What is the width of the strip?

    asked on May 14, 2019
  13. Physics

    Two people are standing on a 2.2-m-long platform, one at each end. The platform floats parallel to the ground on a cushion of air, like a hovercraft. One person throws a 6.1-kg ball to the other, who catches it. The ball travels nearly horizontally.

    asked on October 24, 2008
  14. Chemistry

    For a particular isomer of C8H18, the following reaction produces 5099.5 kJ of heat per mole of C8H18(g) consumed, under standard conditions. What is the standard enthalpy of formation of this isomer of C8H18(g)?

    asked on November 3, 2014
  15. Physics

    Two point sources emit sound waves of 1 m wavelength. The sources are pointed at each other. The sources, 2 m apart, emit waves which are in phase with each other at the instant of emission. a) Where, along the line between the sources are the waves out of

    asked on December 11, 2016
  16. Algebra

    Joe and Jodi go canoeing. They paddle upstream 12 miles. On the return strip (with the current) they average 3MPH faster. The total trip takes 8 hours. 1. Find their speed going upstream 2. Find the amount of time it took them to rerun to their starting

    asked on May 14, 2019
  17. Physics

    In a diesel engine, the piston compresses air at 305 K to a volume that is 0.0624 of the original volume and a pressure that is 48.5 times the original pressure. What is the temperature of the air after the compression?

    asked on January 6, 2009
  18. Ap Chemistry

    explain the difference in boiling points of acetone and 1 proponol. (proponol higher) also explain the difference in water solubility of chloroethane and acetone. (acetone is soluble but not chloroethane)

    asked on February 27, 2011
  19. math

    a sticker cost 15 cents and a packet of 8 similar stickers cost 1 dollar clement buy 37 stickers what is the least amount of money that clement of money that clement spend on the stickers

    asked on October 17, 2019
  20. Chem

    What is the concentration of a solution made by diluting 85 mL of 6.0 mg/L free chlorine to a final volume of 750 mL?

    asked on September 19, 2015
  21. Gen Chem

    Light of wavelength 272 nm shines on a piece of magnesium metal. What is the speed of the ejected electron? (Light energy greater than that of the work function of magnesium ends up as kinetic energy of the ejected electron. The work function is the

    asked on January 18, 2010
  22. Physics

    An equilateral triangle has sides of 0.17 m. Charges of -9.0, +8.0, and +2.2 µC are located at the corners of the triangle. Find the magnitude of the net electrostatic force exerted on the 2.2-µC charge.

    asked on January 26, 2009
  23. Physics

    A hydraulic hoist has a ram of 30 cm diameter and a plunger of 1 cm diameter. If 70 N effort is applied to the plunger and the efficiency is 80%, find the maximum load it can raise.

    asked on March 7, 2017
  24. Math

    This task is about choosing a new washing machine. Your washing machine is broken. You need a new one. The new washing machine must hold at least as much as the old one and spin at least as fast as the old one. You used your old washing machine three times

    asked on August 16, 2016
  25. Stats

    A testing service has 1000 raw scores. It wants to transform the distribution so that the mean =10 and the standard deviation = 1. To do so ?

    asked on February 18, 2010
  26. Math

    Hey! So, I've been working on this problem for awhile but I'm currently a bit dumbfounded on how to solve it. I think this question has been answered before but I still don't quite understand how it works or how to explain it. The problem is as follows:

    asked on June 20, 2016
  27. chemistry

    Calculate the pH of a 195 mL solution containing 7.50g of ethylamine (CH3CH2NH2) and 7.50g of ethylammonium bromide (CH3CH2NH3+ Br-). The Kb of ethylamine is 4.7 x 10-4

    asked on March 7, 2013
  28. chemistry

    how many grams of magnesium are required to react with 2.0 moles of hydrochloric acid?

    asked on February 2, 2013
  29. Geometry

    rectangle FGHK The length of FH is 9 cm. What is the length of GK? C is the center of the rectangle 4 is the height 4.5 measure from F to C 4.5 from H to C

    asked on April 1, 2018
  30. Math (Trig)

    A triangle ABC has a trisected angle A. The angle trisectors divide side a (opposite angle A) into three segments which are BD, DE, and DC. The lengths are 2, 3, and 6, respectively. What are the lengths of the other sides?

    asked on October 5, 2015
  31. physics

    two cars weighing 1500 kg are made to collide with a wall.the initial and final velocities are 15 m/s and 2.6 m/s.if the collision last for 0.15 seconds,then find impulsive force exerted on the car

    asked on June 6, 2013
  32. english

    Hi, I Proofread for wording errors and grammar, but I need help to see if my grammar is proper now. I personally respect every religion, and I love reading holy books. Holy books inspire many people. Holy books taught me many morals and stories on our

    asked on June 29, 2012
  33. statistics

    Find a z value to the right of the mean so that 74.5% of the distribution lies to the left of it.

    asked on November 29, 2011
  34. Economics

    If the income elasticity of demand is 3/4 and the interest elasticity of demand is -1/4, by what percent does money demand rise if income rises 10% and the nominal interest rises from 4% to 5%. Thanks!

    asked on April 3, 2007
  35. Math

    Rupert flew 3/16 of the way around the world but George flew 4/9 as far as Rupert. How far around the world did George Fly?

    asked on January 27, 2011
  36. math

    laura has a roll of ribbon there are 29 yards of ribbon on the roll what equation can laura use to find the number of inches of ribbon on the roll

    asked on March 9, 2011
  37. english

    Is my sentence punctuated correctly? Even though it is almost summer, we still have overcast skies and light rain.

    asked on January 23, 2011
  38. chemistry

    A sample of magnesium (13 g) when heated in air produces 22 g of product. What percent (by weight) of magnesium is present in the product? Answer in units of %.

    asked on September 9, 2010
  39. algebra

    One adult ticket and seven children's tickets cost $62. Two adult tickets and eight children's tickets cost $79. How much does one adult ticket cost? How much does one children's ticket cost?

    asked on March 31, 2016
  40. chemistry

    An unknown sample with a molecular mass of 180.0g is analyzed to yield 40% C, 6.7% H, and 53.3% O. What is the empirical formula and the molecular formula of this compound?

    asked on June 20, 2012
  41. Maths 7th grade

    How do you factorise?

    asked on May 17, 2011
  42. Physics

    A small plastic ball of mass 6.30 10-3 kg and charge +0.150 µC is suspended from an insulating thread and hangs between the plates of a capacitor (see the drawing). The ball is in equilibrium, with the thread making an angle of 30.0° with respect to the

    asked on January 26, 2009
  43. Chem

    i don't get this ?.......If the weather forecast stated that the pressure is 104.2kpa. then what is the pressure in the atmosphere? and what would a barometer measure in mm of mercury need help please

    asked on January 20, 2009
  44. Maths B

    The running costs of a particular factory consist of two components – a constant charge per week for rent of premises and a variable cost for labour which depends on the number of staff working in the factory in that particular week. The total weekly

    asked on March 1, 2017
  45. Algebra II

    ((x-1)/3x+15))-((x+3)/(5x+25)) HOW TO SIMPLIFY THAT???

    asked on April 6, 2011
  46. Business

    Where can I find detailed info on all the lawsuits that Microsoft have encountered?

    asked on December 5, 2014
  47. English

    To indicate a thought (For example: I'm hungry), do you put quotation marks around the thought as you would do if the thought were spoken out loud, or do you put the thought in italics?

    asked on August 28, 2014


    asked on January 27, 2008
  49. Biology

    Have to make a model of a cell with all its parts listed. Anyone have an ideal on what to make it out of?

    asked on September 17, 2007
  50. Math

    what are the coordinates of the center and the measure of the radius for a circle whose equation is ( x - 8)^2 + (y + 4)^2 = 12

    asked on April 1, 2018
  51. Physics 2017

    I have a coil of copper wire. I want to know the length of the wire in the coil. I do not wish to unwind the coil and measure the length directly. I find from a table of densities that the density of copper is 8.89x10^3kg/m^3. Explain how I could find the

    asked on March 9, 2017
  52. math

    Write the inequality that represents the solution set for −15/9 y

    asked on February 20, 2017
  53. math

    So far this year Nick has scored a 75, 81, 88 and 92 on four of his math tests. Each test is worth a maximum of 100 points. To earn a B this year, Nick needs a test average of 80 or better. Write the inequality that represents this scenario. Let t equal

    asked on February 20, 2017
  54. math

    Write the inequality that represents the solution set for −15/9y < 11/13 . Please help thanks

    asked on February 19, 2017
  55. computer science

    What does it mean when there is a high prior probability in terms of Baynesian statistics?

    asked on April 26, 2013
  56. Math

    when testing for a fever, what is the true positive rate for a thermometer that always reads 105 F? What is the false positive rate? **Note: the definition of fever is that the patients temperature exceeds 100 F**

    asked on October 14, 2012
  57. Computer Science

    when testing for a fever, what is the true positive rate for a thermometer that always reads 105 F? What is the false positive rate? **Note: the definition of fever is that the patients temperature exceeds 100 F**

    asked on October 14, 2012
  58. adventist

    The sum of two consecutive numbers is 37. What are they?

    asked on October 12, 2012

    What is equivalent between points a and b when R=3 R R ----\/\/\//---\/\/\/\/----| | | | | | | a | | R | b ----| --/\/\/\/\--------- | | | R | |----------\/\/\/\/-------|

    asked on July 9, 2012
  60. algebra


    asked on May 12, 2011
  61. Algebra II

    ((x-1)/3x+15))-((x+3)/(5x+25)) HOW TO SIMPLIFY THAT???

    asked on April 6, 2011
  62. algebra

    for the equation y=1/4(x+5)^2-2, what is the vertex

    asked on February 23, 2009
  63. Science

    what is the definition of nutrient?

    asked on December 6, 2013
  64. ecology

    I have a Data Analysis Lab that has a graph attached to it. It talks about how temperature affects the growth rates of the two species'. It says that researchers studied the effect and they hypothesized that increasing temperature would increase the growth

    asked on September 25, 2013

    What is equivalent between points a and b when R=3 R R ----\/\/\/----\/\/\/---- a /\/\/\-----b \/\/\/\/-----

    asked on July 9, 2012
  66. algebra


    asked on May 12, 2011
  67. maths

    These questions concern the integers 84, 126, 168 and 294. 1)Choose the option that is the lowest common multiple of the four integers. 2)Choose the option that is the highest common factor of the four integers. Options for them: A) 28 B) 42 C) 63 D) 294

    asked on September 11, 2007
  68. Algebra II

    ((x-1)/3x+15))-((x+3)/(5x+25)) HOW TO SIMPLIFY THAT???

    asked on April 6, 2011
  1. Math

    The Answer Is A

    posted on November 24, 2019
  2. hayley

    That could be the case. However, I do not think calling Hayley out on it for everyone to see was a smart move. This should be a 1 on 1 kind of talk.

    posted on November 8, 2019
  3. Social Studdies, Ms. Sue please check!

    bruh nah

    posted on October 28, 2019
  4. social studies


    posted on October 26, 2019
  5. Government

    its all a now a a a a

    posted on October 21, 2019
  6. MATH

    Larry ya is not right for connexus! I used the answers and got one out of four 😞

    posted on October 17, 2019
  7. social studies

    It's your boy and Hal are right got 100% Thx guys!

    posted on October 15, 2019
  8. Science!

    @ I don't even know why I'm alive thx so much 16/16 for connexus people!

    posted on October 15, 2019
  9. Science

    Answers for connexus students are: 1.) A 2.) B,C,D 3.) A 4.) B & E 5.) A,D,E Got 100% promise good luck!

    posted on October 15, 2019
  10. Language Arts

    You Guys Are Funny

    posted on October 14, 2019
  11. physics


    posted on March 7, 2019
  12. Math


    posted on January 30, 2019
  13. English

    This thread gave me a good laugh. 😂

    posted on November 7, 2018
  14. algebra


    posted on July 28, 2018
  15. Geometry

    Is the area incorrect?

    posted on April 1, 2018
  16. Geometry

    So the length of GK would also be 9?

    posted on April 1, 2018
  17. Geometry

    I think the area is: 8.24621

    posted on April 1, 2018
  18. S.S

    C D B 100%

    posted on March 7, 2018
  19. Probability and Statisics


    posted on February 23, 2018
  20. Math


    posted on December 1, 2017
  21. Math help please


    posted on December 1, 2017
  22. Language Arts 8A


    posted on November 27, 2017

    Gravity- Earths core will pull it's self towards it's self.

    posted on November 26, 2017
  24. Social Studies

    Well that was something@teacher why are you on this page anyway

    posted on September 26, 2017
  25. geometry


    posted on September 6, 2017

      Consider this quote: "In each of these historical instances . . . mistrust led to misunderstanding, which led to armed conflict." The ellipsis in this quote is appropriate if        A. the meaning and spirit of the quote is retained.   B. it

    posted on July 31, 2017
  27. Statistics


    posted on April 16, 2017
  28. prasad

    It depends on the object, but generally the bottom

    posted on March 9, 2017
  29. math


    posted on February 20, 2017
  30. math

    thank you!

    posted on February 20, 2017
  31. math

    ok i think i wrote it wrong the y is a seperate variable its not suppose to be with the 9

    posted on February 19, 2017
  32. math

    i put that in and it said it was wrong

    posted on February 19, 2017