tessa

Most popular questions and responses by tessa
  1. Science

    1.Explain the process of succession. 2.Describe how changes in an ecosystem can affect organisms that live there. 3.Describe the amount of time needed for ecosystem recovery

    asked on March 11, 2016
  2. Health

    4.) Most unintentional poisonings occur in children under... (1 point) A. 10 B. 2 C. 5 *** D. 6 months 9.) As a universal precaution, use ___ whenever possible if you are going to be in contact with bodily fluids. (1 point) A. latex gloves *** B. band-aids

    asked on February 18, 2016
  3. chemistry

    Write out the net ionic equation for: Cd(NO3)2 + Na2S -----> 2NaNO3 + CdS ----- thanks!! Write out the net ionic equation for: Cd(NO3)2 + Na2S -----> 2NaNO3 + CdS If this is done in a water solution, then the sodium nitrate will be in solution, as was the

    asked on September 12, 2006
  4. Math.

    A human red blood cell is about 0.000008 meters in diameter which of the following represents this number in scientific notation -6 A. 0.8 x10 -6 B . 8.0 x 10 6 C. 0.8 x 10 6 D. 8.0 x 10 MR loya stayed that the circumference of earth at the equator is

    asked on December 18, 2017
  5. geometry

    What type of quadrilateral is formed by connecting the points (0,0), (3x,b), (18x,b), and (15x,0)? Explain. How would I solve this?

    asked on June 24, 2014
  6. Grade 12 chemistry

    This is the second reaction: HCl(aq)+NaOH(aq)-->NaCl(aq)+H2O(l) (Heat of neutralization) This reaction involves mixing two solutions: 1.00 mol/L NaOH and 1.00 mol/L HCl. Trial 1: 48.0 mL of the NaOH solution is mixed with 47.5 mL of the HCl. The

    asked on January 1, 2012
  7. Physics: merry-go-round question

    A playground merry-go-round of radius 1.92 m has a moment of inertia 411 kg m2 and is rotating at 10.4 rev/min. A child with mass 38.3 kg jumps on the edge of the merry-go-round. Assuming that the boy's initial speed is negligible, what is the new angular

    asked on April 26, 2010
  8. Chemistry

    How many grams of iron metal do you expect to be produced when 245 grams of an 80.5 percent by mass iron (II) nitrate solution reacts with excess aluminum metal? Show all of the work needed to solve this problem. 2 Al (s) + 3 Fe(NO3)2 (aq) yields 3 Fe (s)

    asked on May 21, 2014
  9. History

    Who is the best president in your life time? I am going back to high school, so tell me what you think about my answer. Well I think the best President was George Washington for his leadership throughout the Revolutionary War. But since I was not alive

    asked on November 26, 2008
  10. Social studies

    Which of the following is an effect of the desertification taking place in parts of Africa? A. Some Africans struggle to get clean drinking water. B. Africa's infrastructure is highly developed. C. The majority of Africa is experiencing political

    asked on April 1, 2019
  11. History

    5. Which of the following best summarizes why the Missouri Compromise needed to be replaced by the Compromise of 1850? A.) Members of the Congress wanted to end the question of slavery in the U.S. B.) The U.S. wanted to sell the territory gained after the

    asked on February 26, 2016
  12. geography

    Which of the following has negatively affected Africa's economies? A. The lack of quality health care in Africa. (this is my answer) B. The presence of nongovernmental organizations in Africa. C. The collaboration among different organizations such as the

    asked on April 1, 2019
  13. stats word problem Please help!

    A. random sample of 50 four year olds attending daycare centers provided a yearly tuition average of 3987$ and the population standard deviation of $630. Find the 90% confidence interval of the true mean. and B. If a daycare center were starting up and

    asked on November 24, 2012
  14. ice skater world problem

    A skater spins with an angular speed of 12.4 rad/s with her arms outstretched. She lowers her arms, decreasing her moment of inertia by a factor of 8.00. Ignoring friction on the skates, what will be the skater's final angular speed?

    asked on April 26, 2010
  15. Math

    Tamika’s dad bought a Mustang convertible for 12,000 dollars to celebrate his first job in 1978, which paid him 15,000 dollars a year. If Tamika is to use the same fraction of her salary as her dad to buy a Mustang convertible, which now sells for 32,000

    asked on December 13, 2017
  16. statistics

    In a sample of 200 people, 154 said they watched educational television. Find the 90% confidence interval of the true proportion of people who watch educational television. If the television company wanted to publicize the proportion of viewers, do you

    asked on November 23, 2012
  17. chemistry

    How many grams of magnesium metal will react completely with 5.2 liters of 4.0 M HCl? Show all of the work needed to solve this problem. Mg (s) + 2 HCl (aq) yields MgCl2 (aq) + H2 (g)

    asked on May 21, 2014
  18. Math/statistics

    a recent study indicated that 29% of the 100 women over age 55 in the study were widows. a. How large a sample must you take to be 90% confident that the estimate is within 0.05 of the true proportion of women over age 55 who are widows? b. If no estimate

    asked on November 23, 2012
  19. History

    3. Support for the Mexican-American War are most closely connected with support for which of these ideas? A.) Manifest Destiny**** B.) Transcendentalist Movement C.) Great Awakening D.) Monroe Doctrine 4. Read the information below: During the 1820's and

    asked on February 26, 2016
  20. chemistry

    what volume would 4.3 moles of hydrogen gas occupy at 45 degrees and 3.22 atm?

    asked on February 27, 2014
  21. Colle physics

    For an object in uniform circular motion, on what parameters does the experimental determination of the centripetal force depend when using F = ma

    asked on October 28, 2014
  22. English - Please help quickly!!

    I need help with making a thesis statement for an essay I have to write on the book Poisonwood Bible The prompt I have says : Choose a novel or play that depicts a conflict between a parent and a son or daughter. Write an essay in which you analyze the

    asked on September 30, 2013
  23. stats word problem Please help!

    A. random sample of 50 four year olds attending daycare centers provided a yearly tuition average of 3987$ and the population standard deviation of $630. Find the 90% confidence interval of the true mean. and B. If a daycare center were starting up and

    asked on November 23, 2012
  24. Mathematics

    How many letters in the word MATHEMATICS have more than one line symmetry

    asked on January 15, 2018
  25. Urgent! PLZZ HHEELLPP!!

    8. Which answer best describes a main benefit of the Transcontinental Railroad? A.) It proved to the world that the United States was capable of great feats of engineering B.) It created safe, high-paying jobs for immigrants who wanted to work building the

    asked on February 26, 2016
  26. History

    South Vietnam's Diem was a solid supporter of human and civil rights. True****** False I can't remember for sure. Thanks in advance!!!

    asked on May 10, 2018
  27. Physics

    Suppose you are stopped for a traffic light, and an ambulance approaches you from behind with a speed of 19.0 m/s. The siren on the ambulance produces sound with a frequency of 960 Hz as measured when you are at rest relative to the ambulance. The speed of

    asked on March 1, 2013
  28. Algebra

    HELP! I am not sure how I would even start this problem or solve it. A hyperbola with a horizontal transverse axis contains the point at (4, 3). The equations of the asymptotes are y-x=1 and y+x=5 Write an equation for the hyperbola.

    asked on July 26, 2014
  29. Algebra 2

    Hey I am working on math homework that involves "Standard Form to Vertex Form by Averaging." My class is just starting to learn this today, but I am totally lost still on what to do. Can you please help? The formula for this is y=a(x - h)^2 + k the h is

    asked on February 8, 2010
  30. math

    There are 25 cars in a parking lot. Nine of the cars are red. The rest of the cars are black and white. A. What percent of cars in the lot are red? Not red? B. describe two ways to determine the percent of cars that are not black given the number of white

    asked on April 29, 2013
  31. Math/statistics

    Thirty five percent of adult americans are regular voters. A random sample of 250 adults in a medium size college town were surveyed, and it was found that 110 were regular voters. Estimate the true proportion of regular voters with 90% confidence and

    asked on November 23, 2012
  32. History

    John perkins mostly dealt with energy infraction desalination plants nuclear weapons weapon trade**********

    asked on March 27, 2018
  33. Math

    Which list shows least to greatest A. 60% 2/3 0.75 4/5 B. 60% 0.75 2/3 4/5 C. 4/5 0.75 2/3 60% D. 2/3 4/5 60% 0.75

    asked on December 18, 2017
  34. geometry

    What type of quadrilateral is formed by connecting the points (0,0), (3x,b), (18x,b), and (15x,0)? Explain. How would I solve this?

    asked on June 24, 2014
  35. Science

    Consider a neutral atom that has 17 electrons A.) how many protons does it have? B.) what is it's atomic number? C.) which element is it?

    asked on February 18, 2014
  36. Math

    To get to her friend's house, Sandra walked along the sidewalk in her neighborhood. If she walked 100 yards at a direction of 45° northeast and then turned to walk 400 yards straight east, how many yards and in what direction would she need to walk if she

    asked on January 17, 2017
  37. physics

    A major-league pitcher can throw a baseball in excess of 41.3m/s. If a ball is thrown horizontally at this speed, how much will it drop by the time it reaches a catcher who is 15.2m away from the point of release?

    asked on September 14, 2016
  38. chemistry

    A certain acetic acid solution has pH = 2.14. Calculate the volume of 0.0900 M KOH required to reach the equivalence point in the titration of 35.0 mL of the acetic acid solution.

    asked on April 3, 2014
  39. Physics

    The combination of an applied force and a frictional force produces a constant total torque of 38.1 Nm on a wheel rotating about a fixed axis. The applied force acts for 7.00 s, during which time, the angular speed of the wheel increases from 2.40 rad/s to

    asked on April 26, 2010
  40. Physics

    A solid bar of length L = 1.30 m has a mass m1 = 0.893 kg. The bar is fastened by a pivot at one end to a wall which is at an angle è = 33.0 ° with respect to the horizontal. The bar is held horizontal by a vertical cord that is fastened to the bar at a

    asked on April 26, 2010
  41. Math

    Here's a couple examples from my homework. If someone could help me solve this by showing me step by step what to do, it would be so great. Also, any websites that would show me the steps too. Thanks so much. I have to get all my work done by tomorrow and

    asked on March 15, 2009
  42. 6th grade Social Studies

    Describe what you think are some of the positive and negative issues related to political action committees and interests groups.

    asked on December 2, 2008
  43. ORGANIC CHEM QUESTION

    I can't figure out how to draw the structure of beta-valerolactone. Since it's beta I thought it would have a four mem-ring but when I do this I keep getting it wrong. It says the 5 carbons are supposed to be arranged in a linear chain, help please!

    asked on April 8, 2017
  44. Algebra 2

    Hey I am working on math homework that involves "Standard Form to Vertex Form by Averaging." My class is just starting to learn this today, but I am totally lost still on what to do. Can you please help? The formula for this is y=a(x - h)^2 + k the h is

    asked on February 8, 2010
  45. geometry

    A rectangular garden that is W ft wide is enclosed by 120 ft of fencing. How long is the garden?

    asked on September 24, 2009
  46. Algebra

    Translate to a system of equations. DO NOT SOLVE. A nontoxic scouring powder is made up of 4 parts baking soda and 1 part vinegar. How much of each ingredient is needed for a 16-oz mixture? What are the two equations? For most problems, I can easily find

    asked on February 19, 2009
  47. chemistry help!!! (clueless)

    how do i find the mass number of chemicals I would think that you would add up the components masses (molecular masses [from periodic table) that make up the chemical... like...HCl (H= 1.008g/mol, Cl= 35.45g/mol) added= 36.458g/mol hope this helps=)

    asked on July 10, 2007
  48. rere

    this is a stupid website it doesn't help as far as I can tell the experts all go ot sleep by now, leaving the late nite questions til the morning

    asked on November 19, 2006
  49. History

    John Perkins spent most of his EHM career with what firm BOEING MAIN CENTER Halliburton*** BASF

    asked on March 27, 2018
  50. Physics

    A hot-air balloon is rising upward with a constant speed of 2.10m/s. When the balloon is 3.18m above the ground, the balloonist accidentally drops a compass over the side of the balloon. How much time elapses before the compass hits the ground?

    asked on September 14, 2016
  51. Economics

    I need help finding two sources about real estate monetary and fiscal policies. The sources need to help me answer the following questions... How have these policies affected... 1. employment rates for real estate? 2. growth of real estate? 3. prices of

    asked on November 28, 2009
  52. Algebra

    Solve graphically. x-y=0 y=x² The reason I don't understand the question is the second equation with the x². How do I graph that? I'm not sure if I ever graphed with an exponent, and if I did, it was a long time ago. I'm reposting this because I didn't

    asked on February 19, 2009
  53. History

    The Space Race during the Cold War a) became a matter of national pride for only the Soviet Union b) became a source of fierce competition between European powers c) was used by U.S. politicians to distract attention from other policy successes d) had

    asked on May 10, 2018
  54. Math

    What is the area of a quadrilateral with vertices at (1, 1), (4, 1), (7, 5) and (4, 5)?

    asked on December 13, 2017
  55. English

    The man in the elevator was not pushing the buttons Is preposition is in the object is elevator the verb phrase is was not pushing and the action verb is pushing the helping verb is was and the adverb interrupters not What was the point of the story? Is

    asked on January 21, 2017
  56. math

    I feel dumb for not knowing how to do this, but how would these numbers be converted into cents? $.003253 per kWh. $0.00825 decrease per kilowatt hour

    asked on May 13, 2016
  57. Socials

    What does the biome in Kamloops look like? What are the critters and vegetation in this region?

    asked on February 18, 2014
  58. Science

    1. Consider a neutral atom that has 17 electrons A.) how many protons does it have b.) what is it's atomic number c.)which element is it 2. List the following for an atom with 33 protons and 42 neutrons a.) the name of the element b.) the atomic number

    asked on February 17, 2014
  59. math

    How to find L.C.M

    asked on July 25, 2016
  60. synonyms

    Does overhaul and remodel essentially mean the same thing?

    asked on May 9, 2016
  61. Essay direction clarification

    I am trying to prepare in my head for an essay exam that I will be having tomorrow and I would like to know how you would interpret the professors instructions - "Please prepare to answer one of the following in an essay of at least four paragraphs

    asked on October 9, 2013
  62. English II - Poisonwood Bible

    I'm trying to come up with a thesis statement also I need help with a question. How does Leah Price's changes in the book change us, the reader? As for my thesis statement, I have sort of an idea of what I want it to be like... Leah alienates herself from

    asked on October 4, 2013
  63. Physics

    Suppose the battery on your phone delivers a current of 0.740 mA (that's milliAmperes) over a time of 4.00 hours. What is the total charge that flows out of the battery during this time? AND How many electrons flow out of the battery during this time?

    asked on January 28, 2013
  64. algebra

    Solve graphically. x-y=0 y=x² The reason I don't understand the question is the second equation with the x². How do I graph that? I'm not sure if I ever graphed with an exponent, and if I did, it was a long time ago. Thanks!

    asked on February 19, 2009
  65. 2nd grade english

    what is the verb in this sentence: He's very smart.

    asked on November 24, 2008
  66. math

    expressions with possitive and negative exponents. how do u leave no exponents in the denominator?

    asked on October 26, 2008
  67. Kyle College

    find the equations of the normals to the curve xy=4 which are parellel to the line 4x-y-2=0

    asked on June 8, 2008
  68. science

    what does manipulated varible mean? what does responding varible mean? what does hypothisis mean? In an experiment, a manipulated variable is one that can be easily changed by the xperimenter, such as the length of a pendulum The responding variable will

    asked on November 19, 2006
  69. physics

    Two workers are moving a slab of ice (m = 290 kg) across the factory floor. As seen from above, one worker exerts a force of 415 N at an angle of -20o, and the other exerts a force of 470 N at an angle of 50o. What is the magnitude of the acceleration of

    asked on September 14, 2016
  70. Writing

    What's the best way to say that someone resigned from council because the timing conflicted a full-time job?

    asked on April 15, 2016
  71. physics

    A bicycle has wheels with a diameter of 0.570 m. It accelerates uniformly and the rate of rotation of its wheels increases from 181 rpm to 260 rpm in a time of 19.9 s. Find the linear acceleration of the bicycle. i tried converting everything to linear to

    asked on February 21, 2015
  72. english

    how do u write an outline over someone you admire like for instant my cousin who helped me in band, athletics and school work??

    asked on September 23, 2014
  73. science

    why is gravity on earth and not on the moon i need something to help me start it off

    asked on March 7, 2014
  74. math

    Describe and correct the error made in solving the literal equation at the right for n. 2m = -6n + 3. 2m + 3 = -6n. 2m + 3/-6 = n

    asked on September 11, 2013
  75. Chemistry

    How many molecules of ethane (C2H6) are present in 0.249 g of C2H6? Enter answer in scientific notation.

    asked on February 19, 2013
  76. Math

    Which gender typically watches more television per month? Justify your answer. MALE |. . . . :. . . : .: .. . .: . . . . . FEMALE| . . .:. . . .::.. ::. .. . . | | | | | | | 700 1050 1400 1750 2100 2450 2800

    asked on April 20, 2012
  77. Physical Education

    In your role within a structure discuss the importance of communication. Provide examples that you have used. (4)

    asked on September 22, 2010
  78. Sci 275

    I asked this already but was not clear on what I needed help with. My assignment is on water pollution. Write a 700- to 1,050-word paper in APA format that includes the following: o A brief description of your selected water resource issue and how it

    asked on February 22, 2009
  79. Sci 275

    Write a 700- to 1,050-word paper in APA format that includes the following: o A brief description of your selected water resource issue and how it originated. o A management and sustainment plan that you think will alleviate the problem. o Any opposing

    asked on February 22, 2009
  1. Chemistry

    0.8 mol

    posted on April 7, 2019
  2. geography

    Very important, because considering that jobs that depend on transportation, and much more. but then the economy is much more good for us, because we have the rich lands that makes us have a good economy.

    posted on December 20, 2017
  3. Math

    alright

    posted on December 18, 2017
  4. Math.

    yeah its ok lol i got it

    posted on December 18, 2017
  5. Math.

    Oh ok thank you Steve

    posted on December 18, 2017
  6. Science helpppp

    3 is b

    posted on November 21, 2017
  7. American government

    D?

    posted on August 22, 2017
  8. Math

    They are all wrong!!!! For connexus Kids these are the right answers. 1.C 2.D 3.C 4.B 5.D 6.A 7.D 8.B 9.B 10.B 11.B 12.A 13.B 14.A 15.D 16.D

    posted on May 2, 2017
  9. science

    The answers are 1.C 2.D 3.C 4.D 5.A Got 100%

    posted on April 26, 2017
  10. Math

    All these people are dumb, the answer is about 1 gallon.

    posted on April 22, 2017
  11. Science

    Yaoi king Thx for the help!!!! I got a 100%

    posted on April 18, 2017
  12. ORGANIC CHEM QUESTION

    Got it, thank you!

    posted on April 10, 2017
  13. ORGANIC CHEM QUESTION

    That only gives the structure for gamma and delta

    posted on April 9, 2017
  14. Social Studies

    1. B 2. D 3. B 4. C got 100%

    posted on February 22, 2017
  15. Social Studies

    1.C 2.B or C 3.A 4.A 5.D got 100%

    posted on February 17, 2017
  16. health

    The answer is PCP ( c )

    posted on March 14, 2016
  17. health

    I believe the answer is Omega-3 , but I'm not exact. I hope this helps! :3

    posted on March 9, 2016
  18. History

    ok thank u

    posted on February 26, 2016
  19. History

    Instead of C is number 7 A?

    posted on February 26, 2016