lydia

Most popular questions and responses by lydia
  1. S.S.

    Which statement best describes the framework of government established by the Constitution? A. The three branches of government defer the majority of power to the states B. A system of checks and balances keeps each of the three branches from having too

    asked on September 6, 2017
  2. History

    Which accurately describes the exploration efforts of Francisco Pizarro? A) Pizarro led expeditions to modern-day Pennsylvania and established a Quaker colony. B) Pizarro led a fleet of three ships—the Niña, Pinta, and Santa Maria—to the Bahamas. C)

    asked on September 21, 2018
  3. chemistry

    Why if you dissolve cobalt chloride solution in distilled water and then pour acetone in it, the bottom part of the graduated cylinder is red and the top part is blue? What do you mean by it has one color with water of crystallization? CoCl2*6H2O is a

    asked on April 11, 2007
  4. chemistry

    Which of the answers choices best describes John Dalton's contribution to atomic theory? he discovered to nucleus he gave future scientist a foundation for understanding how electrons move. he gave future scientist a foundation for understanding how atoms

    asked on August 24, 2017
  5. Math Help? Check my answers.

    1. Name the coefficients in the polynomial. 4x^2 + 3x - 3 4, -3, -3 4, 3, 4, 3, 3, -4, -3, 2. How many terms are in the following polynomial? 6x^4 + 3x^3 - 2x^2 + 15x - 14 5 4 3 2 3. In the expression -7x - 5x^2 + 5, what is the coefficient of x? 7 5 -5 -7

    asked on May 19, 2014
  6. educational technology

    3. adding transitions to slides in a presentation A. offers effects when moving from one slide to the next.***** B. adds animation to selected text and images. C. adds a new slide to a presentation in microsoft powerpoint. D. creates sound effects

    asked on March 12, 2015
  7. History

    Which best describes the significance of the Treaty of Tordesillas? A) It was the first time in world history that two European nations sought a third party to mediate a dispute regarding foreign lands. B) It was the first time in world history that two

    asked on September 21, 2018
  8. chemistry

    Which statement correctly describes a covalent bond? The atoms' valence electrons combine to form a network of bonds. Valence electrons are transferred from one atom to the other. The atoms' valence electrons are shared between the atoms. All of the atoms'

    asked on August 30, 2017
  9. chemistry

    Examine the analogy and how it compares a part to a whole. link : chain :: atom : _____ Choose the answers that best complete this analogy. (select all that apply) molecule matter compound proton please help

    asked on August 17, 2017
  10. Urgent math

    population growth model. Can anybody please help me out in trying to solve this problem? It's my homework and I don't seem to understand what I am getting. The count in a culture of bacteria was 400 after 2 hours and 25,600 after 6 hours. (a) What is the

    asked on August 3, 2015
  11. Math

    Lee Holmes deposited $16,600 in a new savings account at 9% interest compounded semiannually. At the beginning of year 4, Lee deposits an additional $41,600 at 9% interest compounded semiannually. At the end of year 6, what is the balance in Lee’s

    asked on October 15, 2011
  12. History

    Which best describes how European powers of the 16th century used the economic theory of mercantilism to grow their wealth? A) European nations maximized the sale of exports and established tariffs to restrict colonies from trading with foreign nations. B)

    asked on September 22, 2018
  13. Science (Physics)

    Air becomes a conductor when the electric field strength exceeds 3.00 × 106 N/C. Determine the maximum amount of charge that can be carried by a metal sphere 8.5 m in radius. The value of the Coulomb constant is8.99×109 N·m2/C2. Answer in units of C. I

    asked on February 29, 2016
  14. Geometry: Student Correction (Stuck)

    Joelle set up the following proportion: 4/6 = 5/x. Solve for x. Determine if proportion is correct. If not, explain what is wrong with it.

    asked on March 29, 2013
  15. College Algebra

    f(x) = x2 + 11x, x ≥ − 11/2 find the inverse

    asked on July 22, 2015
  16. World History

    Which accurately describes the differences between Orthodox and Reform Jews? orthodox jews strictly follow mosaic law, whereas reform jews do not follow all ancient laws reform jews strictly follow mosaic law, whereas orthodox jews do not follow all

    asked on September 26, 2017
  17. physics

    At an amusement park, a swimmer uses a water slide to enter the main pool. If the swimmer starts at rest, slides without friction, and decends through a vertical height of 2.40 m, what is her speed at the bottom of the slide?

    asked on November 24, 2008
  18. science

    A scoop of ice cream is placed on top of a warm piece of pie in a bowl. Which statements about the scenario are true? (Select all that apply.) the pies energy will destroy a portion of the ice creams energy the overall amount of energy in the bowl will

    asked on August 22, 2017
  19. social studies

    Who is the richest person in Paraguay? Thanks!

    asked on November 13, 2010
  20. chemistry

    Examine the equation. 6CO2 + __H2O → C6H12O6 + 6O2 In order to balance the equation, what coefficient must be placed in front of H2O 4 6 12 1 please help

    asked on September 4, 2017
  21. psychology

    what would the dependent and independent variable and control and experimental group be in this problem: John is intrigued by the relationship between frustration and aggression. He proposes to study whether socioeconomic status is a factor in how drivers

    asked on September 18, 2007
  22. science

    Which statements best describe how the properties of gases and plasmas differ? (Select all that apply). The particles of plasmas have a higher kinetic energy than the particles of gases. Gas particles are charged while plasma particles are uncharged.

    asked on August 21, 2017
  23. science

    Molten lava coming out of a Hawaiian volcano cools down and forms rock. Which statement best describes the flow of energy in the scenario?  energy moves from lava to the surroundings energy moves from the surroundings to the lava energy stays within the

    asked on August 22, 2017
  24. history

    The Philippine-American war was A) a minor event for americans B) more costly than the spanish american war C) fought in a traditional manner D) never completely resolved E) over even before the spanish american war

    asked on February 2, 2012
  25. history

    The _______________addresses many of the concerns raised by the Declaration of Independence, including freedom of speech, the press, religious practice, assembly, and petition. First Amendment Magna Carta Federalist Papers Second Amendment The first ten

    asked on November 7, 2018
  26. Math

    How can you write a unit rate if at least one term is a fraction? How is this different from writing a unit rate where both terms are whole numbers?

    asked on September 5, 2013
  27. Chemistry

    Explain how water of hydration is related to measurement. Then explain how it is related to the law of definite composition

    asked on April 7, 2013
  28. science

    Imagine yourself making a nice cup of tea on a cold winter day. You begin by boiling some water in a kettle. Next, you add the steaming liquid to your cup. Then, you open a tea bag and repeatedly dunk it into the water. You pour a dash of milk and drop a

    asked on August 16, 2017
  29. Urgent math

    please help The fox population in a certain region has a relative growth rate of 7% per year. It is estimated that the population in 2005 was 19,000. (a) Find a function n(t) = n0ert that models the population t years after 2005. n(t) = (b) Use the

    asked on August 3, 2015
  30. science

    Molten lava coming out of a Hawaiian volcano cools down and forms rock. Which statement best describes the flow of energy in the scenario?  energy moves from lava to the surroundings energy moves from the surroundings to the lava energy stays within the

    asked on August 22, 2017
  31. acounting

    A company purchased and installed a machine on January 1 at a total cost of $72,000. Straight-line depreciation was calculated based on the assumption of a five-year life and no salvage value. The machine was disposed of on July 1 of the fourth year. The

    asked on February 22, 2015
  32. College Algebra

    If g(x) = x2 + 6x with x ≥ −3, find g−1(55) I need help solving this problem this is an example but it does not thoroughly is explained. :/

    asked on July 20, 2015
  33. physics

    a mass if 10kg move with a velocity of 4ms-1find it kinetic energy.

    asked on January 22, 2016
  34. science

    liquid water has a constant density. Do you agree or disagree with this statement? Why or why not? Be sure to support your argument by using what you have learned about the states and motion of matter.

    asked on August 21, 2017
  35. science

    Observation The trash smells. Explanation Decaying biological material causes the trash to smell. Test (independent variable) Add food scraps to one trash can along with other materials, such as plastic, cardboard, paper, and tin. To a second trash can,

    asked on August 19, 2017
  36. math

    Please help: A continuously compounded account starts with $2500 in principal. The annual interest rate is 11.3%. What is the balance after 15 years? pert: Value= Principal*ert = 2500* e0.11(15) = 2500 * e1.65 wow. thanks

    asked on April 22, 2007
  37. science

    Which process is an example of a chemical change? A metal railing rusting in damp weather alcohol evaporating from a cotton swab steam rising from a boiling pot of soup a piece of wood shrinking as it dries out

    asked on August 17, 2017
  38. science

    liquid water has a constant density. Do you agree or disagree with this statement? Why or why not? Be sure to support your argument by using what you have learned about the states and motion of matter. please help

    asked on August 21, 2017
  39. science

    Baking soda is mixed with water, and no bubbles are produced. When baking soda is mixed with vinegar, it bubbles and foams rapidly. What chemical property of baking soda is shown in the scenario? 1)reactivity 2)boiling point 3)flamibility 4)color change

    asked on August 17, 2017
  40. Chemistry

    Can someone check my answer and let me know me if the are right or wrong. If I wrong can you give me the right answer plz. 1. What is the maximum amount of KCl that can dissolve in 600 g of water? (The solubility of KCl is 34 g/100 g H₂O at 20°C.) * 34

    asked on March 10, 2017
  41. chemistry

    How do you balance this equation? C6H12O6 + O2 --> H2O + CO2 Thanks! C6H12O6+6O2=6H2O+6CO2 (that should be right!) C6H12O6 + 6O2 --> 6H2O + 6CO2 Thank you! Thank you too!

    asked on February 24, 2007
  42. history

    Because every day Americans vote on representatives who in turn vote on legislation, rather than Americans voting on issues directly, our system of government is known as a _____________. republic nation constitutional monarchy democracy The 3/5ths

    asked on November 3, 2018
  43. politics

    What is the difference between nationalism and federalism? Thanks!

    asked on May 16, 2008
  44. Algebra

    Determine the discriminant for the quadratic equation -3 = x^2 + 4x + 1. Based on the discriminant value, how many real number solution does the equation have? Discriminant =b^2 - 4ac

    asked on March 5, 2017
  45. physics

    Multiple Concept Example 9 provides background pertinent to this problem. The magnitudes of the four displacement vectors shown in the drawing are A = 17.0 m, B = 10.0 m, C = 11.0 m, and D = 23.0 m. Determine the (a) magnitude and (b) direction for the

    asked on January 30, 2016
  46. math

    Describe all the points on the Earth’s surface that are exactly 4000 miles from the North Pole. If you need to, use 3960 miles for the radius of the Earth.

    asked on April 12, 2010
  47. Trignometry

    An isosceles triangle has two sides of length w that make a 2á-degree angle. Write down two different formulas for the area of this triangle, in terms of w and á (Greek “alpha”). By equating the formulas, discover a relation involving sin 2á, siná,

    asked on April 12, 2010
  48. algebra

    Can someone please help me with these problems? Please and thank you. 1)Solve the equation: (1/x)+[x/(x+2)]=1 2)Simplify the complex fraction: 3-(3/4) ------- (1/2)-(1/4) (1/x)+ [x/(x+2)] = 1 Convert left side to the sum of fractional terms with common

    asked on May 13, 2007
  49. science

    List your own example of turning an observation into a hypothesis. Be sure to list all five steps: observation, explanation, test (independent variable), prediction (dependent variable), and hypothesis. please help

    asked on August 19, 2017
  50. physics

    Multiple Concept Example 9 provides background pertinent to this problem. The magnitudes of the four displacement vectors shown in the drawing are A = 17.0 m, B = 10.0 m, C = 11.0 m, and D = 23.0 m. Determine the (a) magnitude and (b) direction for the

    asked on January 30, 2016
  51. government

    Hello there. I was wondering if someone could please tell me whether or not you could call a government totalitarian and communism? We're studying Sparta (from ancient Greece) and our teacher said it was totalitarian and later she said it was

    asked on October 21, 2007
  52. pharmacy

    importance of uniformity of weight test in pharmacy

    asked on September 11, 2010
  53. math

    Describe all the points on the Earth’s surface that are exactly 4000 miles from the North Pole. If you need to, use 3960 miles for the radius of the Earth.

    asked on April 12, 2010
  54. physics

    Can anyone help just can figure it out. Multiple Concept Example 9 provides background pertinent to this problem. The magnitudes of the four displacement vectors shown in the drawing are A = 17.0 m, B = 10.0 m, C = 11.0 m, and D = 23.0 m. Determine the (a)

    asked on January 30, 2016
  55. chemistry

    How could you use a precipitation reaction to separate the following pair of cations: K^+ and Hg2 ^2+? (write the formula and net formula for each reactant)? The answer is Hg2 ^2+ (aq) + 2Cl- (aq) = HgCl2(s) but how do I work it out?

    asked on October 7, 2012
  56. Math

    Lee Holmes deposited $16,600 in a new savings account at 9% interest compounded semiannually. At the beginning of year 4, Lee deposits an additional $41,600 at 9% interest compounded semiannually. At the end of year 6, what is the balance in Lee’s

    asked on October 12, 2011
  57. Geometry

    Triangles ABF and EDG are congruent. Triangles ABF and GCF are equilateral. AG = 24 and CG = 1/5 AB. What is the total distance from A to B to C to D to E?? Please I don't understand this

    asked on July 17, 2011
  58. Physics

    A string has a linear density of 6.7 x 10-3 kg/m and is under a tension of 210 N. The string is 1.6 m long, is fixed at both ends, and is vibrating in the standing wave pattern shown in the drawing. Determine the (a) speed, (b) wavelength, and (c)

    asked on November 30, 2009
  59. science

    Which process is an example of a chemical change? drying clothes in the dryer chopping a tree activating a glow stick heating a cup of tea

    asked on August 17, 2017
  60. Algebra

    Find the net change in the value of the function between the given inputs. g(t) = 8 − t2; from −6 to 9

    asked on July 21, 2015
  61. Physics

    The transverse standing wave on a string fixed at both ends is vibrating at its fundamental frequency of 250 Hz. What would be the fundamental frequency on a piece of the same string that is twice as long and has four times the tension? I know the equation

    asked on November 30, 2009
  62. science

    Pepsin,which speeds up the breakdown of protein,is classified as

    asked on January 21, 2015
  63. Math

    The temperature at 6:00 pm was 33°f.over the course of the day, the temperature decreased 5.5°F per hour. What was the temperature at midnight?

    asked on October 26, 2016
  64. College Algebra

    A function f has the following verbal description: "Multiply by 5, add 9, and then take the fifth power of the result." and find the inverse?

    asked on July 22, 2015
  65. english

    Which of the following sentences contains an italicized word that's used as a predicate adjective? A. Jerry looks into the microscope. B. Jerry looks ill today. C. Jerry looks at the map. D. Jerry looks disdainfully at the pile of laundry. I think it's B.

    asked on March 21, 2014
  66. Math

    A tennis racket is offered at 25% off. Including 7% sales tax, the final price is $67.41. What is the original price, without tax or discount?

    asked on March 24, 2016
  67. Math Help? Check my answers.

    1. Find the next three terms in the sequence. 30, 22, 14, 6, ... -3, -12, -21 -1, -8, -15** -1, -2, 3, -2, -10, -18 2. Find the next three terms in the sequence. 3, 6, 9, 12, ... 15, 18, 20 15, 19, 20 15, 18, 21 14, 18, 21** 3. Find the next three terms in

    asked on April 23, 2014
  68. calc / physics

    Suppose that a 5-foot-long chandelier falls from a 35-foot ceiling and that you are 6 feet tall and standing directly under the chandelier (a) How long do you have to get out of the way when it drops? =-16(t^2)+Vt+h =-16(t^2)+0+(35-5-6) (for the bottom of

    asked on October 1, 2014
  69. Math (12th)

    What is the common difference in the arithmetic sequence 30, 27, 24, 21, 18, ...

    asked on September 27, 2012
  70. 5th grd math- metric conversion

    30m = 6000, i have converted to cm, in, and ft, no where close to getting 6000? help

    asked on March 7, 2011
  71. math

    Sinea wants to spend money using the same ratios as on her last trip to the carnival. If she spends $28 on games, how much will she spend on souvenirs? Snacks Games Souvenirs Sine $5 $8 $18

    asked on October 13, 2018
  72. Science

    When calculating delta Tsample,why is th initial temperature taken to be 100 degrees Celsius

    asked on March 1, 2017
  73. math

    From the top of a lighthouse 75 feet high, the cosine of the angle of depression of a boat out at sea is 4. To the nearest foot, how far is the boat from the base of the lighthouse?

    asked on September 7, 2011
  74. geometry

    Given that triangles KON and LOM are similar, find the scale factor

    asked on July 21, 2011
  75. physics

    At a picnic, a Styrofoam cup contains lemonade and ice at 0 degree C. The thickness of the cup is 2.0*10^-3m, and the area is 0.016 m^2. The temperature at the outside surface of the cup is 35 degree C. The latent heat of fusion for ice is 3.35*10^5 J/kg.

    asked on February 21, 2008
  76. PHYSICS!!!HELP!!

    At a picnic, a Styrofoam cup contains lemonade and ice at 0 degree C. The thickness of the cup is 2.0*10^-3m, and the area is 0.016 m^2. The temperature at the outside surface of the cup is 35 degree C. The latent heat of fusion for ice is 3.35*1065 J/kg.

    asked on February 21, 2008
  77. Physics

    The siren of a police car produces a sound of frequency 420Hz.A man sitting next to the road notices that the pitch of the sound changes as the car moves towards and then away from him.1- WRITE DOWN THE NAME OF THE PHENOMENON. 2-ASSUME THAT THE SPEED OF

    asked on October 12, 2010
  78. chemistry

    two everyday chemical reactions then after you have chosen your two everyday chemical reactions List the two reactions and their chemical equations. Also, state each reaction's type (synthesis, decomposition, displacement, or combustion). please help

    asked on September 3, 2017
  79. science

    What physical property is changed when a waitress pours coffee from a pot into four mugs? density color volume temperature

    asked on August 17, 2017
  80. science

    An experienced mountaineer decided to climb mount everest using the same route in the same season and with similar materials and equipment used by a fatal 1924 expedition . The scientific purpose of such a climb would be to

    asked on January 21, 2015
  81. science

    In which of the following phase transitions is energy released? liquid to solid solid to gas liquid to gas solid to liquid please help

    asked on August 22, 2017
  82. Trigonometry

    Suppose *u* is a quadrant IV angle with cos(u) = 3/5. Suppose *v* is a quadrant IV angle with cos(v) = 12/13. Find the exact value of sin(u-v) I have gotten to sin120cos150 - sin150cos120 but I am not sure I am correct up to that point and I don't know

    asked on April 17, 2016
  83. physics

    A 29 g rubber bullet is travelling to the right at 200 m/s, when it hits a 1.1 kg block of wood sitting on a horizontal frictionless surface. If this collision is inelastic (though not perfectly inelastic), and the velocity of the block of wood after the

    asked on November 8, 2011
  84. physics

    What is the magnitude of the momentum of a car weighing 1,555 N when it is moving at a speed of 23 m/s? Express your answer in kg m/s.

    asked on November 8, 2011
  85. MATH

    In an arithmetic sequence, the first term is 100 and the sixth term is 85. Find the common difference. Then, find the 50th term of the sequence. Do I use the formula an=a1+(n-1)d? If so, what would my "n" by in the equation?

    asked on January 16, 2011
  86. Early Child Ed.

    Would you make sure I have chosen the best answer to these two questions? 1. Teacher observation is one of the best methods of assessment since: A. there are no standardized tests for young children. B. the type and number of language arts skills assessed

    asked on September 5, 2007
  87. Geometry

    Tell if the measures 9,11, and 7 can be side lengths of a triangle. if so, classify the triangle as acute, right, or obtuse?

    asked on July 21, 2011
  88. social studies

    whats the difference between indentured and enslaved labor?

    asked on September 1, 2008
  89. english

    Do you underline, put in italics, or quote article titles from magazines?

    asked on September 15, 2007
  90. Math

    the three vertices of rectangle ABCD are A(2, 1) , B(6, 1) , C(6, 4).Find the coordinates of D. Please help me,thank you.

    asked on October 15, 2017
  91. College Alg

    Find the inverse function of f. f(x) = 36 − x2 , 0 ≤ x ≤ 6 I can't seem to find this inverse, someone help please?

    asked on July 21, 2015
  92. HISTORY

    Choose two famous Americans who lived during the period 1820–1860. • Research the two people you chose. • Analyze your research. • Write a dialogue between the two famous Americans Can somebody help me with this? * Give me ideas for people *

    asked on March 12, 2015
  93. physics

    Assume you are given two objects whose centre of mass is located exactly at the origin. The first object has a mass of 33 kg and is located at position +30 m with respect to the origin. If the mass of the second object is 7.0 kg, what is its position (in

    asked on November 8, 2011
  94. math

    What is the average area of a theme park? Thanks!

    asked on April 15, 2011
  95. chemistry

    Can someone help me finish this equation, please? We're adding Magnesium to Copper sulfate and getting Copper. This is what I have as of now: CuSO4+Mg===>Cu I'm guessing it is a single replacement, so should I add MgSO4 to the right? But then my lab

    asked on March 8, 2007
  96. history

    Please, can someone tell me what this quote means? "What kills a skunk is the publicity it gives itself." -Abraham Lincoln Lowlifes often broadcast their crimes and evil, often with their own mouths. This greatly helps police in criminal matters. Thanks

    asked on October 21, 2006
  97. math

    Can you please help me simplify this into one fraction? 3/(x-3) - 5/(x/2) Here are the options: A) -2x+9/(x-3)(x-2) B) -2x/(x-3)(x-2) C) -2x-9/(x-3)(x-2) D) 2x+9/(x-3)(x-2) I think it's option D but I'm not so sure :(

    asked on June 9, 2017
  98. geometrie

    (4, 5)'(9, 5) and (5,1) are three of a quadrilateral whose opposite sides are equal and parallel.there are three possibilities for the co-ordinates of the missing vertex.Find all three,and draw the three quadrilateral on a grid

    asked on December 12, 2015
  99. math

    how do you do this problem of inequality -2(-3x4 > 3(5-2x)

    asked on November 4, 2013
  100. Math please help urgent !

    Find the slop of the tangent to the curve y=(10-sqrt x)(5+sqrt x) at x=25

    asked on February 29, 2012

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