Most popular questions and responses by Rain
  1. help math

    1.Write the ratio in the simplest form 16:24 1:2 4:3*** 3:4 2:3 2.Solve the following proportion p/6 =7/8 p=5.25*** p=8 p-10.5 p=42 3.James has a model helicopter. The model is 8 inches long and 7 inches wide. The actual helicopter is 56 inches long. What

    asked on December 22, 2016
  2. Chemistry

    Reaction 6 1. Place a piece of mossy zinc in a test tube 2 add hydrochloric acid solution to the test tube until the mossy zinc is completely covered What gas was released in reaction 6 and how could you test the gas to confirm its identity?

    asked on May 20, 2015
  3. History PLEASE HELP

    How did the supreme court decision in Worcester v Georgia and the Indian Removal Act lead to the removal and resettlement of native American groups? please help me with this all i want is help getting started or a sample essay

    asked on December 21, 2016
  4. Limit

    Determine a region whose area is equal to the given limit. lim x-> infinity Sigma (n on top, i=1 on bottom) (2/n)*[5+(2i/n)]^10 I started with delta x=b-a/n =5-0/n =5/n The width of delta is 2/n so b-a=2 I'm not sure how you got 5-0/n The integrand looks

    asked on September 13, 2006
  5. AP Chemistry

    A 23.9475 g sample of impure magnesium carbonate was heated to complete decomposition according to the equation MgCO3(s) → MgO(s) + CO2(g). After the reaction was complete, the solid residue (consisting of MgO and the original impurities) had a mass of

    asked on September 19, 2017
  6. Computer Science/Pseudo Code Python

    Hi, I'm confused about an assignment. I'm not sure what to do and would like some help. An example: Write a program that obtains two integer numbers from the user. It will print out the sum of those numbers. Pseudo code: Prompt user to enter first integer

    asked on February 28, 2016
  7. Chemistry check

    H2O2+MnO2 -----> MnO2 + H2O Is my work correct?

    asked on May 25, 2015
  8. Please help science

    A scientist observes that termites are fed a certain antibiotic die a starvation after a few days. The scientist also notices that certain protists that live inside the termites guy are affected by the antibiotic in a peculiar way: although the protists

    asked on October 7, 2014
  9. physics

    A car drives straight down toward the bottom of a valley and up the other side on a road whose bottom has a radius of curvature of 115 m. At the very bottom, the normal force on the driver is twice his weight. At what speed was the car traveling? I have

    asked on March 28, 2016
  10. Science urgent help please:)

    Compare the forms of locomotion used by the 4 phyla of animal like protists? Describe the process of conjunction . Is conjunction a form of reproduction? Explain In what ways are animal like protists helpful to other living things?

    asked on October 1, 2014
  11. Math

    a) Is ∫[-1 to 1]e^x^3 dx positive, negative, or zero? Explain. I think is positive but i don't know how to explain it. b) Explain why 0 < ∫[0 to 1] e^x^2 dx

    asked on September 10, 2006
  12. Prob and Stats

    For questions 1- 5 use confidence intervals to test the hypothesis. 1) A light bulb producing company states that its lights will last an average of 1200 hours with a standard deviation of 200 hours. A sample of 100 light bulbs from the company were tested

    asked on May 21, 2015
  13. Physics

    Three charges (q1 = 8.7 nC, q2 = -7.2 nC, and q3 = -4.8 nC) are at the corners of a square of side a = 9.2 cm, as shown in the picture. Determine the magnitude of the resultant electric force on each charge.

    asked on July 8, 2012
  14. math

    the length of a rectangle is 8 cm more than its width. If the length is decreased by 9 and the width is tripled, the area is increased by 50%. What was the area of the original rectangle?

    asked on January 30, 2016
  15. Math 3 quick questions

    Factor: A.). 4(3x+1)^2 -5(3x+1) +1 B.) 5(2-3x)^2 -28(2-3x)+15 C.) 2(3a-4)^2 - (3a-4)(a+2)-6(a+2)^2

    asked on October 2, 2014
  16. Spanish

    Im confused about the directions on my hw. I cant really figure out what im supposed to do. This is what it says- Las siguientes personas quiseron hacer varias cosas el sabado pasado. En lugar de eso, tuvieron que hacer cosas diferentes. Expresa eso. The

    asked on January 10, 2010
  17. spanish

    How do you say 'he is allergic to' in spanish? I think it would be something like this: el esta' (hower you say allergic to)los flores, but im not sure

    asked on November 4, 2009
  18. Solid Geometry

    Find the Lateral area in cm square of the following right pryramid. 1. Base is regular octagon of side 20cm and altitude of 20cm. 2. Base is regular hexagon of side 20cm and altitude of 30cm. 3. Base is regular hexagon of side 30cm and slant height of

    asked on August 16, 2016
  19. biology, genetics

    Suppose that r, red, and sc, scarlet, are two recessive eye-color mutations that lie 20 map units apart on the Drosophila X chromosome, and that each causes a red eye color in place of the wild type purple color. A. If a female from pure-breeding rr stock

    asked on February 21, 2014
  20. science

    I need to produce a related structure of the molecular features of carboxyli acid, size hydrocarbon group on ester and distance between oxygeeb atom joined to the ring and -oh group of the carboxylic acid? I have got no ideas on where to start. Start by

    asked on July 13, 2007
  21. Business Communications

    Which of the following selections contains a run-on? If none of the selections contains a run-on, select "Correct." A. Everyone praised Matthew for his will power. B. He quit smoking five years ago, he still craves a cigarette from time to time. C.

    asked on July 7, 2010
  22. Geometry

    Find the possiable measures for line segmant xy in triangle xyz if xz is 6 and yz is six. Im really confused- if you could explain this i would really appericate it! Thanks!

    asked on November 10, 2009
  23. spanish

    How do you say behind in spanish?

    asked on November 4, 2009
  24. geometry

    Whats the midpiont formula? I am totally blanking and i need it asap

    asked on September 17, 2009
  25. English

    title of AIDS on research paper

    asked on May 15, 2008
  26. Science urgent help

    A scientist observes that termites are fed a certain antibiotic die a starvation after a few days. The scientist also notices that certain protists that live inside the termites guy are affected by the antibiotic in a peculiar way: although the protists

    asked on October 7, 2014
  27. Math

    This year, the sum of Mr. Bellini's age and his son's age is 38 years. 4 years ago, Mr. Bellini was 5 times as old as his son. How old is his son this year? How old is Mr. Bellini this year?

    asked on October 10, 2013
  28. Physics

    A thin rod L = 9.0 cm long is uniformly charged and has a total charge of 4.4 nC. Find the magnitude of the electric field at a point P located at a distance R = 13.5 cm from the center of the rod when: (a) The point P lies along the axis of the rod

    asked on July 9, 2012
  29. Science

    I need some answers for my science essay... We have a research report and I cannot find these answers ANYWHERE. The sport I chose for the assignment was Quidditch (awesome, right?) and I cannot find work for a bludger, quaffle, golden snitch, or players. I

    asked on May 26, 2011
  30. social science

    Please could you help me with understanding how the boundaries and links between states of past culture have changed. Thanks This is a very broad question. First, you must define what you mean about the word "past".Does the thinking behind this question

    asked on July 25, 2007
  31. Calculus

    could anybody please explain how sec x tan x - ¡ì sec x tan^2(x) dx = sec x tan x + ¡ì sec x dx - ¡ì sec^3(x) dx What I don't understand about your question is what is ¡ì ? i just want to know if those two equations are equal, if yes, how did one

    asked on October 16, 2006
  32. Calculus problem

    I really need help on this question. A goldsmith makes a wedding band by taking a gold ball and drilling a wide hole through it. The wedding band has to be 1 cm wide and the hole has to have a diameter of 2 cm. Given that gold weighs 19.32g/cm^3, how heavy

    asked on October 10, 2006
  33. Polar coordinates

    I need some help on this Calculus question about polar coordinates. Consider a pasture bordering on a straight river. At 2m from the river, a goat is tied to a pole with a 4m long rope. What is the area of grass that the goat can graze? There are a couple

    asked on September 26, 2006
  34. Calculus

    f(x)=x^2 - 5x +7 and g(x) 3/x 1) Indicate points of intersection 2) compute the area enclosed by the graphs of f(x) and g(x). 1) (1, 3) , (3, 1) 2)Area = ∫ [1 to 3] [(3/x) - (x^2 - 5x + 7)] dx = [3 ln x - (1/3)x^3 + (5/2)x^2 - 7x = 3 ln 3 - 8/3 am i

    asked on September 26, 2006
  35. Chemistry

    0.25 mol dm-3 solution of hydrochloric acid?

    asked on March 29, 2017
  36. Math

    Three friends drove radio controlled cars around a track. The table below shows the number of laps completed by each person and the time it took. Latoya Mary Melissa Number of laps 9 30 20 Time (minutes) 3 6 5 Write the number of laps completed per minute

    asked on December 20, 2016
  37. To : bobpursley

    Please could you help me on my question:)

    asked on October 1, 2014
  38. math

    Stephen drove at a constant speed from Town X to Y at 9 A.M.yesterday. Half an hour later Cole drove from Town X to Y at A constant speed that was 30 km/h faster than Stephens. By 9:30 A.m, Stephanie had already traveled 40 km. Cole caught up with Stephen

    asked on October 24, 2013
  39. Basic Algebra

    Im having a stupid moment and i cant figure this out- x-1 x-2 --- + ---= 1 2 3 assume the ---- is a division bar

    asked on November 12, 2009
  40. law studies

    what idea is fundamental to the contemporary concept of criminal justice

    asked on September 9, 2009
  41. Calculus problem

    Evaulate: integral 3x (sinx/cos^4x) dx I think it's sec3 x , but that from using a piece of software, so you'll have to verify that. Using uppercase 's' for the integral sign we have S 3sin(x)/cos4dx or S cos-4(x)*3sin(x)dx If you let u = cos(x) then du =

    asked on October 16, 2006
  1. math

    Ok Anna Banana, not trying to be rude boy how else would you get here? You obviously searched up this question to get here so I are cheating.

    posted on June 4, 2019
  2. chemistry

    .105 M

    posted on March 28, 2019
  3. Ed. Tech

    Does anyone know what test these answers go to?

    posted on August 15, 2018
  4. 5th grade

    thx justian for the help

    posted on February 22, 2018
  5. Social Studies CHECK ANSWERS

    The answers are correct, except for 5. Which is C

    posted on November 27, 2017
  6. AP Chemistry

    Thank you!!!

    posted on September 19, 2017
  7. Math

    24. Is so wrong it hurts.

    posted on August 29, 2017
  8. Math

    How did you get these answers

    posted on August 27, 2017
  9. Math

    9/3-Latoya 30/6-Mary 20/5-Melissa

    posted on December 20, 2016
  10. physics


    posted on December 8, 2016
  11. physics


    posted on September 29, 2016
  12. Chemistry

    thank u so much :)

    posted on May 21, 2015
  13. Math 3 quick questions

    Oh ok thanks:)

    posted on October 2, 2014
  14. physics

    The answer is 180

    posted on October 29, 2013
  15. Physics

    yes, it is

    posted on August 30, 2013
  16. math

    an angle has a measure of (5x+7) and another angel has a measure of (2x+54) together they form a linear pair find the smallest angle

    posted on April 4, 2013
  17. writing skills

    I had the same question on a test, I also chose A and it was wrong.

    posted on November 20, 2012
  18. Physics

    Never mind Elena, when I wrote it out on paper it made sense. Thank you very much! :)

    posted on July 8, 2012
  19. Physics

    Order, clockwise- q1, q2, q3.... Could you explain the procedure in words?

    posted on July 8, 2012
  20. Science


    posted on June 2, 2011
  21. Science

    please help! I need work done, so distance and speed for anything quidditch!

    posted on May 26, 2011
  22. Business Communications

    Ah! Okay then! I see what you mean now. Thank you so much for making that clear. I was confused for a bit there. XP Thank you so very much!

    posted on July 7, 2010
  23. simple equations ( math)

    216*1.6 sorry don't have a calc but that will give u the answer

    posted on January 10, 2010
  24. Spanish

    think i figured it out now- thanks to everyone who tried i appericate it :)!

    posted on January 10, 2010
  25. Math

    this is imposible uless it is a right triuabgle. You need to knw the height. formula is: b*h A= ---- 2

    posted on January 10, 2010
  26. english

    i copyed the responce and made teth edits in (). The book "We are all welcome here” by Elizabeth Berg relates to the time era of Elvis Presley and his home town. The narrator and the protagonist of the book is a 14 year old girl named Dianna Dunn. In my

    posted on January 10, 2010
  27. math

    ur deviding by -7 so the sign would be flipped to < and it would be -5

    posted on November 12, 2009
  28. Basic Algebra

    Thanks a bunch!

    posted on November 12, 2009
  29. 6th grade

    12 grams or 12x the variable g

    posted on November 12, 2009
  30. History quick ?

    I would go with 24 but im not really sure ekkk

    posted on November 12, 2009
  31. Civics

    Cost- the upfont cost of building, for example, a subway would be extremely high and most cities would not be able to affford it- even if it was eventually paid up. the debt would be too high

    posted on November 12, 2009
  32. science

    because helium has a lower density the oxygen- ie the molecules weigh less in helium

    posted on November 10, 2009
  33. Physics Gr11 Light Unit - Blind spot

    This may be wrong- i havent taken phisics yet, but it makes some sense- because a blind spot is relativelly small it would be difficult to completely lose sight of an object because of the size difference, and also a persons eyes are constantly moving. For

    posted on November 10, 2009
  34. math

    it sounds like a font end estimation would be more exact bc depending on which digit ur rounding to the answer could be uber off

    posted on November 10, 2009
  35. 5th grade Math

    1- its 7 2- its 12 this is bc they are the greatest #s that can go into the two origional #s if that makes any sense

    posted on November 4, 2009
  36. substitution method

    2x+(x-7)=8 you have to substite the equation for y into the problem

    posted on November 4, 2009
  37. Algebra

    2 maybe?

    posted on November 4, 2009
  38. Mathmatics

    you really shouldnt just post every question on your hw sheet...

    posted on November 4, 2009
  39. spanish

    figured it out- its atra's de

    posted on November 4, 2009
  40. Math

    i would get a calculator.... i got 6(+or -) 5.291502622

    posted on November 4, 2009
  41. Math

    In the question you are dealing with a 1/2 probability rate, so in a-it wouls be 2 of the 1/2 rates which is 25% b-it would be the same b/c its still two 1/2 senerios, so 25% again c-same thing 25% d-this is a 75% chance b/c the secod child is still an

    posted on November 4, 2009
  42. Math

    Pb is 1/4 of Pa if that helps, but i don't really understand what you or maybe the question is asking

    posted on November 4, 2009
  43. Mathmatics

    does this help at all?

    posted on November 4, 2009
  44. us history

    minunite men in the revolutionary war or a malitia

    posted on November 4, 2009
  45. Mathmatics

    what do you mean? that's hard to fallow...

    posted on November 4, 2009
  46. Mathmatics

    again... 7x=4x+21 subtract 3x=21 divide x=7

    posted on November 4, 2009
  47. Math.

    10/x+x=7 multiply times 10 x+x=70 add the xs 2x=70 divide x=35 i think... its been a while

    posted on November 4, 2009
  48. Math.

    the straight line is a division sign one sec and ill figure out how to solve it

    posted on November 4, 2009
  49. Mathmatics

    Here are the steps: 5x-14

    posted on November 4, 2009
  50. geometry

    angle addition postulate- is there is an angle that is divided u take the measurements of the two angles that are created and add them together

    posted on September 17, 2009
  51. geometry

    slope= y= mx+b midpoint= (Y1-Y2/2), (X2-X1)/2

    posted on September 17, 2009
  52. English

    title in AIDS introduction

    posted on May 15, 2008