Most popular questions and responses by maria
  1. language arts

    which sentence best describes the employer in the original story "the ninny" and the employer in the adaptation the governess

    asked on May 10, 2016
  2. math

    A​ student's course grade is based on one midterm that counts as 15​% of his final​ grade, one class project that counts as 15​% of his final​ grade, a set of homework assignments that counts as 40​% of his final​ grade, and a final exam that

    asked on February 17, 2019
  3. Chem (HELP ASAP)

    Phenol C6H5OH partially dissociates in water as shown C6H5OH + H2O --> H3O+ + C6H5O- If Ka is 1.6*10^-10 and the concentration of H3O and C6H5O are both 1.0*10^-5 M at equilibrium, what would be the concentration of phenol?

    asked on June 8, 2010
  4. science

    A person drive an automobile with a mass of 450 kilograms at a velocity of 26 meters per second. The driver accelerates to a velocity of 30 meters per second. The difference in the automobile's kinetic energy is how many joules?

    asked on November 18, 2015
  5. check pls

    Grayson is designing a rectangular athletic field. On his scale drawing. the vertices of the rectangle are (4,5), (9,10), and (9,5). What are the coordinates of the fourth vertex? A. (4,9) B. (4,10) C. (5,10) D. (5,9) I think it's A. (4,9) Am i right?

    asked on April 30, 2015
  6. calculus

    A rectangular beam is cut from a cylindrical log of radius 25 cm. The strength of a beam of width w and height h is proportional to wh2. (See Figure 4.70.) Find the width and height of the beam of maximum strength.

    asked on November 1, 2011
  7. Social studies

    To which internatinal associations does the United States belong to?

    asked on October 12, 2016
  8. java/programming

    ask the user to enter his or her birthday in the MM/DD/YYYY format and output the number of days between the birthday and today. This gives the person's age in days.

    asked on March 7, 2011
  9. chemistry

    Solubility (g/100gH2O) Substance 20∘C 50∘C KCl 34.0 42.6 NaNO3 88.0 114.0 C12H22O11 (sugar) 203.9 260.4 Using the above table, determine whether each of the following solutions will be saturated or unsaturated at 50 ∘C. 1.) Adding 19.7 g KCl to 35.0

    asked on July 17, 2016
  10. chemistry

    On average, earth's crust contains about 8.1% aluminum by mass. If a standard 12-ounce soft drink can contains approximately 15.0g of aluminum, how many cans could be made from one ton of the Earth's crust?

    asked on January 17, 2011
  11. Social Studies

    In which h economic situation would interest rate decrease? Most people are saving rather than buying houses••• Average families are choosing to invest in new businesses High consumption is driving a surge in the services sector Increased job

    asked on May 5, 2017
  12. English

    Need these answered soon please! 10.   The author of “My Brother’s Keeper” emphasizes Jamie’s conflict by describing the car accident in detail.*** detailing Jamie’s physical appearance and good grades. flashing back to earlier events with his

    asked on October 8, 2016
  13. Geometry

    Given: ΔABC, AB = BC Perimeter of ΔABC = 50 Perimeter of ΔABD = 40 Find: BD BD is the altitude and I got 15, 15+20+5=40 20+20+10=50

    asked on May 8, 2017
  14. Cultural Anthropology

    The difference between transhumance and nomadic pastoralism is: (Points : 1) in transhumance people grow food and in nomadic pastoralism any domesticated plant food is acquired through trade. different types of animals are herded. in transhumance women do

    asked on October 21, 2012
  15. PHI 105 critical thinking and problem solving

    explaining the relationship between informative, explanatory and persuasive statements and critical thinking

    asked on December 19, 2011
  16. Social studies

    Type of American Indian dwelling in the Eastern Woodlands

    asked on September 12, 2016
  17. chemistry

    What volume of 0.10 M NaOH can be prepared from 250. mL of 0.30 M NaOH? A) 0.075 L B) 0.25 L C) 0.75 L D) 0.083 L E) 750 L

    asked on July 15, 2016
  18. Calculus

    A sphere with radius 1m has temperature 15 degrees C. It lies inside a con- centric sphere with radius 2m and temperature 25 degrees C: The temperature T(r) at a distance r from the common centre of the spheres satisfi es the di fferential equation:

    asked on August 8, 2011
  19. Science

    Which of the following determines the type of biome classification that will be made for a particular reason? a. Climate* b. Size c. Mineral deposits d. Number of human settlements

    asked on January 30, 2014
  20. Pre Calculus

    Two forces with magnitudes of 150 and 75 pounds act on an object at angles of 30° and 150°, respectively. Find the direction and magnitude of the resultant force. Round to two decimal places in all intermediate steps and in your final answer. Having lots

    asked on August 18, 2016

    A 5.00-kg box slides 7.00 m across the floor before coming to rest. What is the coefficient of kinetic friction between the floor and the box if the box had an initial speed of 3.00 m/s?

    asked on March 18, 2014
  22. Math

    the probability of winning a game is 25%. how many times should you expect to win if you play 20 times.

    asked on May 18, 2016
  23. physics

    A shotputter accelerates a 7.3kg shot from rest to 14m/s. If this motion takes 2.0s what average power was developed?

    asked on February 28, 2011
  24. History Social studies

    1. Which activity is part of both private and civic life? (1 point) learning about politics •• voting for a candidate going to sports games working at a bookshop 2. Why are elections necessary for good governance? (1 point) Elected officials can be

    asked on October 13, 2016
  25. statistics

    A service station has a pump that distributes diesel fuel to automobiles. The station owner estimates that only about 3.2 cars use the diesel pump every 2 hours. Assume the arrivals of diesel pump users are Poisson distributed. a. What is the probability

    asked on March 19, 2013
  26. chemistry

    Titanium is used in airplane bodies because it is strong and light. It has a density of 4.55 g/cm^3. If a cylinder of titanium is 7.75 cm long and has a mass of 153.2 g, calculate the diameter of the cylinder. (V=pi*r^2*h, where V is the volume of the

    asked on January 17, 2011
  27. math

    In an isosceles triangle, the perimeter is 75 cm and one of the sides is 25 cm. Find all its sides. Can you find all angles of the triangle? Explain your answer.

    asked on January 28, 2017
  28. Math

    from a barrel of colored marbles, you randomly select 5 blue, 2 yellow, 3 red, 4 green, and 2 purple marbles. Find the experimental probability of randomly selecting a marble that is not yellow.

    asked on May 18, 2016
  29. Calculus 1

    Find the formula for a function of the form y=bxe^(-ax) with a local maximum at (4,12)...

    asked on April 13, 2016
  30. Math

    Suppose Elina used 15 tiles to make the rectangular design. How many different rectangles could she make with the 15 tiles? Write a list or draw a picture to show the number and dimensions of the rectangles she can make.

    asked on January 23, 2018
  31. Calculus--Please Help!

    A 13-foot ladder is leaning against a vertical wall. If the bottom of the ladder is being pulled away at a rate of 2 feet per second, how fast is the area of the triangle formed by the wall, the ground, and the ladder changing when the bottom is 12 feet

    asked on November 13, 2011
  32. physics

    Two identical containers are open at the top and are connected at the bottom via a tube of negligible volume and a valve which is closed. Both containers are filled initially to the same height of 1.00 m, one with water, the other with mercury, as the

    asked on December 6, 2010
  33. Algebra

    If m angle BGC =16x-4 and m angle CGD = 2x+13,Find the value of x so that angle BGD is a right angle.

    asked on September 9, 2012
  34. Business

    Identify which of the following sentences uses modifiers correctly; a) kurt and his hockey teammates nearly cooked two hundred pancakes for the breakfast fundraising event. d) Bridget decided to leave her career as an attorney and pursue acting during the

    asked on April 27, 2011
  35. Algebra 2

    Which matrix represents the system of equations below? -10x-9y+13z=12 8x-7y-5z=15 5x+4y-6z=-12 a. -10,-9,13 8,-7,-5 5,4,-6 b.-10,-9,13 8,7,5 4,4,-6 c.-10,8,5 -9,-7,4 13,5,-6 d. 10,8,5 9,-7,4 13,5,-6

    asked on January 9, 2014
  36. Art

    What did the Vogel's artworks communicate about their historical interests? They collected works that were culturally popular. They collected works that depicted revolutions. They collected works that depicted the history of cities. ( my choice ) They

    asked on March 24, 2016
  37. statistics

    A new extended-life light bulb has an average service life of 750 hours, with a standard deviation of 50 hours. If the service life of these light bulbs approximates a normal distribution, about what percent of the distribution will be between 600 hours

    asked on January 9, 2012
  38. algebra

    a 38 inch piece of steels is cut into three pieces so that the second piece is twice as long as the first piece, and the third piece is three inches more than four times the length of the first piece. find the lengths of pieces.

    asked on April 4, 2016
  39. chemistry

    what is the osmolarity of 0.35M KBr? how to set it up.

    asked on November 25, 2011
  40. Algebra 2 help...

    A half life of a certain radioactive is 36 days. An initial amount of the material has a mass of 487 kg. Write an exponential function that models the decay of this material. Find how much radioactive material remains after 5 days. Round your answer to the

    asked on January 10, 2014
  41. physical sicence

    If a force gives a 2-kg object an acceleration of 1.6 m/s2, what acceleration does this same force give to an 8-kg object?

    asked on October 12, 2012
  42. geometry

    Shalonda notices that when she stands next to the flagpole, she casts a shadow that is 8 feet long and that the flagpole casts a shadow that is 28 feet long. Little Shalonda is 4 feet tall. How tall, to the nearest foot, is the flagpole? step by step on

    asked on May 8, 2013
  43. Art

    Please help me I do connexus and this is the last quiz for the semester and I get it wrong then my grade will be a b and my dad will be mad. Individuals can use different criteria to analyze artwork. What would be an example of inappropriate criteria for

    asked on December 17, 2017
  44. trig.

    a person standing 100ft. from the base of the tree looks up to the top of the tree with an angle of elevation of 52. assuming that the persons eyes are 5ft above ground the ground how tall is the tree?

    asked on November 27, 2013
  45. chemistry

    Calculate the grams or milliliters of solute needed to prepare the following solutions. 1.)75. g of a 7.0 % (m/m) KCl solution 2.) 1250 mL of a 8.0 % (m/v) NH4Cl solution 3.) 270. mL of a 15.0 % (v/v) acetic acid solution I really just need to know how to

    asked on July 17, 2016
  46. Math

    A situation that could describe the ratio 52 to 12.

    asked on October 13, 2016
  47. physics

    A 48-kg girl stands on a 8-kg wagon holding two 19.5-kg weights. She throws the weights horizontally off the back of the wagon at a speed of 9.0 m/s relative to herself. - Assuming that the wagon was at rest initially, what is the speed of the girl after

    asked on December 5, 2015
  48. Chemistry

    Write a balanced equation for an alpha particle from Gd-148

    asked on December 6, 2013
  49. precalculos

    The cost C of producing x thousand calculators is given by the following equation. C=-15.2x^2+15,990x+580,000(x≤​175) Find the average cost per calculator for each of the following production levels. 40,000​; 60,000​ and 175,000

    asked on November 3, 2016
  50. History

    Of the following choices which ones are considered democratic values? Select all that apply A. Serving in the military*** B. Honesty C. Patriotism D. Voting in an election ••

    asked on October 12, 2016
  51. College Chemistry

    What are the concentrations of Pb2+ and Cu2+ when the cell potential falls to 0.370 V? Given: A voltaic cell consists of a Pb/Pb2+ half-cell and a Cu/Cu2+ half-cell at 25degrees C . The initial concentrations of Pb2+ and Cu2+ are 5.30×10−2 M and 1.60 M,

    asked on June 23, 2012
  52. Art

    Please check my work i am in connecus and i can’t add in the pictures but if possible can someone check this. This picture is called “ the wounded foot” and it’s by Joaquin sorolla y Bastida and I really hope someone can check this answer thanks In

    asked on December 7, 2017
  53. Physics Pre-Ap

    014 (part 1 of 2) You drop a stone from a position of rest. How far will it fall vertically in the first 2 s? The acceleration of gravity is 9.8 m/s 2 . Answer in units of m 015 (part 2 of 2) If you instead toss it horizontally at 2.7 m/s, how far will it

    asked on September 21, 2012
  54. Social Studies

    Maria ivanov has owned a successful clothing boutique chain for 20 years. Sha has gone into debt several times to expand her business.each time she paid off the debt in full sooner than expected. How will Maria's record affect the loans she is offered? She

    asked on May 5, 2017
  55. Math

    A survey showed that 36% of car owners prefer two door cars, 52% prefer four door cars, and 12% have no preference. You ask 300 people. How many do you think will prefer the two door cars.

    asked on May 18, 2016
  56. Life orientation

    Difine the concept 'risk bahviour' and explain why is it important for teenagers to investigate and be knowledgeable about it

    asked on August 26, 2018
  57. Geometry

    The length of a table is 6 feet on a scale drawing the, length is 2 inches write three possible scales for drawing

    asked on October 19, 2014
  58. chemistry

    A 0.972g sample of a CaCl2*2H2O/K2C2O4*H2O solid salt mixture is dissolved in ~ 150ml of deionized water, previously adjusted to a pH that is basic. The precipitate, after having been filtered and air-dried, has a mass of 0.375 g. The limiting reactant in

    asked on February 19, 2010
  59. math

    A rope goes from one building to another. The distance between the buildings is 10m, and the rope is tied at each building at a point 8m and 4m from the ground. Find the length of the rope.

    asked on February 11, 2017
  60. chemistry

    Ammonia gas can be prepared by the reaction CaO(s) + 2NH4Cl(s) -> 2NH3(g) + H2O(g) + CaCl2(s) If 112 g CaO reacts with 224 g NH4Cl, how many moles of reactants and products are there when the reaction is complete?

    asked on January 20, 2011
  61. Math

    Which is an example of the Symmetric Property? if 3x + 2 = a + 6, then a + 6 = 3x + 2 if a = b and b = 5, then a = 5 if y = 6, then y + 12 becomes 6 + 12 x + 2 = x + 2 *** 2. To properly use the Addition Property of Equality what number would have to be

    asked on May 10, 2019
  62. geometry

    Looking at formulas, which 2 shapes describe this relationship: the area of the 2 dimensional shape is one-fourth the surface area of the 3-demensional figure? Looking at formulas, which two figures describes this relationship: the volume of the first

    asked on October 30, 2011
  63. Statistics

    In your biology class, your final grade is based on several things: a lab score, scores on two major tests, and your score on the final exam. There are 100 points available for each score. However, the lab score is worth 15% of your total grade, each major

    asked on February 19, 2013
  64. chemistry

    An explosive whose chemical formula is C3H6N6O6 produces water, carbon dioxide, and nitrogen gas when detonated in oxygen. write the chemical equation for the detonation reaction of this explosive.

    asked on January 17, 2011
  65. physics

    You're in an airplane that flies horizontally with speed 830km/h (230m/s ) when an engine falls off. Neglecting air resistance, assume it takes 35s for the engine to hit the ground. Find the height of airplane. Find the horizontal distance that the

    asked on March 26, 2015
  66. calculus

    The region bounded by the given curves is rotated about the specified axis. Find the volume V of the resulting solid by any method. y = −x2 + 7x − 12, y = 0; about the x-axis

    asked on March 14, 2017
  67. Math

    1. Write the balanced chemical equation for the reaction NaOH + HCI --> NaCI + H20 2. Extract the relevant information from the qustion: NaOH v= 30mL, M=0.10 HCI v= 25.0 mL, M=? 3. Convert to Liters NaOH v= 0.03 L, M= 0.10M HCI v=0.025L, M=? 4. Calculate

    asked on March 8, 2010
  68. english

    Identify the italicized part of the sentence. The main event will be a memory contest. Will is italicized

    asked on July 24, 2019
  69. Algebra 1/2

    The spinner is spun twice. What is the probability it will stop on either 3 or 5 the first time and will stop on 2 the second time?

    asked on April 30, 2014
  70. math

    Let t be time in seconds and let r(t) be the rate, in gallons per second, that water enters a reservoir: r(t)=700−40t. a) For 0≤t≤30, when does the reservoir have the most water? b) For 0≤t≤30, when does the reservoir have the least water

    asked on September 13, 2013
  71. Pre-Calculus

    Find all solutions to the equation in the interval [0, 2pi) cos4x-cos2x=0 So,this is what i've done so far: cos4x-cos2x=0 cos2(2x)-cos2x (2cos^2(2x)-1)-(2cos^2(x)-1) No idea what to do next.

    asked on March 19, 2012
  72. Math

    Netta faxed n pages from the library. The library charges $1.50 per page. Later the same day, Netta faxed n more pages from a local copy shop. The copy shop charges $1.25 per page plus a $2 convenience fee. Write and simplify an expression for the amount

    asked on January 22, 2015
  73. Math

    A Classroom bulletin board is 7 feet by 4 feet. If there is a picture of a student every 6 inches along the edge, including one in each corner, how many pictures are on the bulletin board? The teacher gave me the answer 40 but I don't know how.... Can you

    asked on September 10, 2013
  74. chemistry

    The solubility of NaCl in water is 35.7 g NaCl/100 g H2O. Suppose that you have 500.0 g of NaCl. What is the minimum volume of water you would need to dissolve it all? The density of water is 1.0 g/mL.

    asked on January 17, 2011
  75. math

    List the sides of triangle ΔMNP in ascending order (shortest to longest) if: m∠M = 64°, m∠N = 48°, for this one i am not sure if your supposed to find the third angle and or the third side can you guys explain and show me the answer i got 132

    asked on January 28, 2017
  76. chemistry

    calculate the molality, molarity, and mole fraction of NH3 in an 12.80 mass % aqueous solution (d=0.9651 g/ml)

    asked on September 8, 2014
  77. Algebra

    If m angle FGE =5x+10, Find the value of x so that line FC is perpendicular to Line AE. Line AE is a striaght line

    asked on September 9, 2012
  78. Science Ms. Sue Please

    1. The human endocrine system is made up of which of the following structures? (1 point) vessels receptors glands * chambers 2. Which of the following best describes the function of the endocrine system? (1 point) It secretes chemical messengers that

    asked on November 5, 2015
  79. Glades academy

    The sum of twenty one and five times a number f is 61 total

    asked on December 2, 2015
  80. Perimeter

    Lamar made a garden in the shape of a rectangle with an area of 36 square feet. The shorter side of the garden measures 4 feet. Explain how you can find the perimeter of the garden.

    asked on March 19, 2015
  81. Mathematics

    Determining the number of seating arrangements with 10 people in 7 chairs required use of ? Combination Permutation** Probability Substitution Determining the number of 3 person committees formed from a club with 12 members requires use of? Combination

    asked on May 10, 2019
  82. Science

    1. The human endocrine system is made up of which of the following structures? (1 point) vessels receptors glands * chambers 2. Which of the following best describes the function of the endocrine system? (1 point) It secretes chemical messengers that

    asked on November 5, 2015
  83. Chemistry

    A patient received 5.0 g of NaCl in 8 hours. How many milliliters of a 0.40 % (m/v) NaCl (saline) solution were delivered?

    asked on July 17, 2016
  84. chemistry

    How many moles of oxygen can be obtained by the decomposition of 7.5 mol of reactant in the following reaction? 2KClO3 -> 2KCl + 3O2

    asked on January 19, 2011
  85. Chemistry

    Calculate the value (calories) for the heat of solution. Mass of NaOH: 2.03 g ΔT for reaction A : 8 °C

    asked on October 24, 2014
  86. science

    what natural and human made features can maps show?

    asked on October 2, 2007
  87. Science

    a reasonable estimate for the size of a cell's nucleus is a. 0.003 b. 3 mm c. 0.003m d. 3m

    asked on October 13, 2014
  88. Geometry

    The distance from the center of a square to its side is 4 yd. Find the perimeter of the square. if you post the answer it would be a big help

    asked on April 20, 2017
  89. chemistry ------ flame test-------------

    Did the nitrate ion effect the color emission of the solution ? how did you decide ? my answer: No , because The nitrate ion is the oxidizing agent in the compound without it you could not burn the chemicals and you could not produce a spectrum so there

    asked on October 11, 2012
  90. Genetics

    Why are we using more dilute cultures for the killing curve while we are using the arg selection culture at full strength? 1. The reason that we are using a more dilute culture for the killing curve is because we want to know how UV light exposure at

    asked on November 4, 2013
  91. chemistry

    determine the value of x for the following reaction: 4C + S8-> 4CS2 3.2 mol S8 yield x mol CS2

    asked on January 20, 2011
  92. Physics

    On a planet that has no atmosphere, a rocket 14.2 m tall is resting on its launch pad. Freefall acceleration on the planet is 4.45 m/s2. A ball is dropped from the top of the rocket with zero initial velocity. (a) How long does it take to reach the launch

    asked on October 20, 2010
  93. 6th grade

    a 600 n box is pushed up a ramp that is 2m high and 5 m long, the person is pushing the box at a force of 300 n,what is the efficiency of a ramp ?

    asked on November 3, 2009
  94. Analytical Physics II

    A charged cloud system produces an electric field in the air near Earth's surface. A particle of charge -2.1 x 10-9 C is acted on by a downward electrostatic force of 4.3 x 10-6 N when placed in this field. (a) What is the magnitude of the electric field?

    asked on September 21, 2017
  95. Geography

    which question would best help you analyze the population density of north korea? You have to choose 3 correct answers. How many square miles does East Asia covers?

    asked on February 10, 2016
  96. chemistry

    A solution of sodium bicarbonate is prepared by adding 45.00g of sodium bicarbonate to a 1.00-L volumetric flask and adding distilled water until it reaches the 1.00-L mark. Calculate the concentration of sodium in units of: a) milligrams per liter b)

    asked on January 15, 2011
  97. Physics

    Jason works for a moving company. A 95 kg wooden crate is sitting on the wooden ramp of his truck, the ramp is angled at 11 degrees. What is the magnitude of force, directed parallel to the ramp, that he needs to get it to start moving up the ramp? What is

    asked on August 25, 2019
  98. Chemistry

    A solution is made by dissolving 10.20 grams of glucose (C6H12O6) in 355 grams of water. What is the freezing-point depression of the solvent if the freezing point constant is -1.86 °C/m?

    asked on January 14, 2011
  99. math

    find the image of S(-1,-3) after a reflection scross the line y=-2

    asked on November 17, 2016
  100. chemistry ASAP please!!

    The reaction of CO(g) + NO(g) is second-order in NO2 and zero-order in CO at temperatures less than 500K. (a) Write the rate law for the reaction. (b) How will the reaction rate change if the NO2 concentration is halved? (c) How will the reaction rate

    asked on March 15, 2011


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