Popular questions and responses by Courtney
  1. geometry

    Two sides of a triangle have lengths 4 and 7. Which of the following can NOT be the length of the third side? A. 4 B. 7 C. 11 D. 5

    asked on July 26, 2016
  2. geometry

    SM=3x−4, and RN=9x−20. Find the value of x. A. 16 B. 4 C. 12 D. 8

    asked on July 26, 2016
  3. geometry

    The lengths of two sides of an isosceles triangle are 8 and 10. The length of the third side could be? A. either 8 or 10 B. 6, only C. 8, only D. 10, only

    asked on July 26, 2016
  4. English

    What grammatical structure is the italicized portion of the sentence? 1. (Headed by a senior), the group drew up rules for School Spirit Week. - nominative absolute 2. My most valuable coin, (one from Spain), is worth more than $100.00. - prepositional

    asked on November 4, 2012
  5. English

    It is impossible to have an indirect object without a subject, transitive verb, and a(n) _____. noun preposition direct object intransitive verb

    asked on November 4, 2012
  6. English

    Why write

    asked on July 23, 2020
  7. physics

    a 15-g bullet is fired from a rifle. it takes 2.50 * 10^-3s for the bullet to travel the length of the barrel, and it exits the barrel with a speed of 715 m/s. assuming that the acceleration of the bullet is constant, find the average net force exerted on

    asked on January 31, 2014
  8. Pre-Cal

    A Ferris wheel is 40 meters in diameter and boarded from a platform that is 5 meters above the ground. The six o'clock position on the Ferris wheel is level with the loading platform. The wheel completes one full revolution every 7 minutes. You make two

    asked on February 14, 2014
  9. Chemistry

    Many metals react with oxygen gas to form the metal oxide. For example calcium reacts: 2Ca(s) + O2(g)--> 2CaO(s) Calculate the mass of calcium prepared from 4,20g of Ca and 2.80g of O2. (a) How many moles of CaO can form from the given mass of Ca? (b) How

    asked on September 28, 2009
  10. Physics

    A car going 15 m/s is brought to rest in a distance of 3 m as it strikes a pile of dirt. How large a force is exerted by the seatbelts on a 90 kg passenger as the car is stopped?

    asked on June 24, 2017
  11. Physics

    In a huge oil tanker, salt water has flooded an oil tank to a depth of h2 = 4.50 m. On top of the water is a layer of oil h1 = 7.55 m deep, as in the cross-sectional view of the tank as shown in the figure. The oil has a density of 0.700 g/cm3. Find the

    asked on October 28, 2014
  12. Speech

    After analyzing a problem, what is the next step in the problem-solving process? a. Develop creative solutions. b. Identify possible solutions. c. Select a solution. d. Implement a solution. I think it might be B

    asked on April 26, 2011
  13. Soc/110

    What new challenges in collaboration and teamwork does technology present? Provide examples

    asked on December 7, 2009
  14. College Algebra

    A truck driver traveled at an average speed of 55 miles per hour on a 200 mile trip to pick up a load of freight. On the return trip(with the truck fully loaded), the average speed was 40miles per hour. What was the average speed for the round trip?

    asked on November 19, 2007
  15. Physics

    A bat flying in a cave emits a sound and receives its echo 1 s later. How far away is the cave wall? is it 340.29 m? the speed of sound is 340.29 m/s i believe v = d/t d = (t)(v) d = (340.29)(1) Nope but thanks for trying :)

    asked on March 1, 2007
  16. Mathematics, simplify


    asked on May 5, 2014
  17. Speech

    Group communication should be evaluated according to which of the following characteristics? a. Do the group members attain their individual goals? b. Do all members participate in the decision-making process? c. Does the group leader encourage

    asked on April 20, 2011
  18. english

    Which of the following sentences is written in active voice? a. The decision was made to revise the original proposal. b. A market analysis was conducted to determine the project’s need. c. The project was developed after months of planning. d. The

    asked on July 13, 2019
  19. Math

    what angle in radians corresponds to 3 rotations around the unit circle

    asked on February 18, 2014
  20. english

    Read the lines from Wordsworth's "Tintern Abbey." The sounding cataract Haunted me like a passion: the tall rock, The mountain, and the deep and gloomy wood, Their colours and their forms, were then to me An appetite: a feeling and a love, That had no need

    asked on June 3, 2010
  21. Math

    An Aircraft factory manufactures airplane engines. The unit cost C (the cost in dollars and each airplane engine) depends on a number of engines made. If x engines are made, then the unit cost is given by the function C(x)=0.5 X² -280 X + 52506. What is

    asked on July 11, 2020

    Calculate the pressure on the top lid of a chest buried under 4.30 meters of mud with density 1.75X 10^3 kg/m^3 at the bottom of a 12.5 m deep lake

    asked on October 29, 2014
  23. Bio 20

    When blood enters a vein from a venule, the blood pressure A) remains constant because of the heart's pumping action B) increases because of the size of the vein C) increases because of stretch receptor stimulation D) decreases because of the size of the

    asked on February 21, 2014
  24. calculus

    Find the number b such that the line y = b divides the region bounded by the curves y = 16x2 and y = 9 into two regions with equal area. (Round your answer to two decimal places.)

    asked on November 9, 2011
  25. Chemm

    A 2.00L flask is filled with propane gas(C3H8)at 1.00atm and 15C. What is the mass of propane in the flask?

    asked on April 6, 2010
  26. College Algebra

    Find two consecutive numbers such that the difference of their reciprocals is 1/4 the reciprocal of the small number.

    asked on November 15, 2007
  27. english

    One way to eliminate sexist language in your writing is to _________. a. use man or words containing man to refer to both genders b. avoid the generic, he, the male pronoun used to refer to both genders c. address mature women by Mrs. or Miss d. use

    asked on July 13, 2019
  28. English

    When writing for emphasis one should ____________. a. use passive voice b. use active voice c. use multiple adverbs d. omit the actor from the sentence

    asked on July 13, 2019
  29. Chemistry

    A solution contains an unknown amount of dissolved magnesium. Addition of 3.38×10−2mol of Na2CO3 causes complete precipitation of all of the magnesium. What mass of magnesium was dissolved in this solution?

    asked on October 3, 2013
  30. Organic Chemistry

    Hello I have to determine the theoritical yield of sulfanilamide after crystalization of impure sulfanilamide with 95% ethyl alcohol (the impure sulfanilamide contains 5% Fluorenone) I understand how to calculate the theoretical yield, my problem is

    asked on September 11, 2012
  31. Math

    A box contains some white balls and some blue balls. There are 5 more blue balls than white balls. One ball is removed at random and not replaced. A second ball is then removed at random. The probability that the balls are different colours is 52/105. Find

    asked on November 10, 2016
  32. Reading

    Describe Johnny’s relationships with Cilla, Lavinia Lyte, and Dove now that Johnny is living with Rab and his family. What do these relationships reveal about Johnny and his personal growth?

    asked on December 21, 2015
  33. physics

    a 95-kg person stands on a scale in an elevator. What is the apparent weight when the elevator is: (A) accelerating upward with an acceleration of 1.8 m/s^2 (answer 1.1 * 10^3 N) (B) moving upward at a constant speed (answer 931 N) (C) accelerating

    asked on January 31, 2014
  34. Math

    I am part of a whole. I am less than one-half but greater than four tenths. I am a decimal with the digit 2 in my hundredths place. What number am I?

    asked on October 16, 2013
  35. math 5th

    Estimate the area of the circle and use 22/7 for pie. Teh circle shows line all the way accross measruing 28cm. Find area. Can some one explain how

    asked on April 24, 2013
  36. geometry Please help!

    The radii of the larger wheels on a tractor are 32 cm. If the ratio of the diameter of a large to small wheel is 19:7, find the diameters of the smaller wheels

    asked on April 15, 2012
  37. math

    the ratio of hydrogen atom to oxygen atoms in water is 2:1 if an amount of water contains 341 trillion atoms of oxygen how many hydrogen atoms are there? how would i do this?

    asked on October 21, 2010
  38. Math

    The measure of an angle formed by two secants intersecting inside the circle equals a.½ the sum of the intercepted arcs b.½ the difference of the intercepted arcs c.½ the measure of the intercepted arc I need help please!

    asked on June 10, 2010
  39. English

    Read the lines from Shelley's "Ode to the West Wind." O thou Who chariotest to their dark wintry bed The winged seeds, where they lie cold and low, Each like a corpse within its grave, Which best explains the metaphor in these lines? 1.The wind is compared

    asked on June 3, 2010
  40. Soc/110

    What collaboration techniques may facilitate collaboration? What technologies may aid collaboration? Provide examples.

    asked on December 7, 2009
  41. Soc/110

    What are the elements of a collaborative team meeting? Provide an example of each element and explain its importance to collaboration

    asked on December 7, 2009
  42. geometry

    the measure of one interior angle of a parallelogram is 50 degrees more than 4 times the measure of another angle. find the measure of each angle.

    asked on February 9, 2017
  43. Physics

    Calculate the pressure on the top lid of a chest buried under 4.30 meters of mud with density 1.75 103 kg/m3 at the bottom of a 12.5-m-deep lake

    asked on October 28, 2014
  44. precal

    A kite flier wondered how high her kite was flying. She used a protractor to measure an angle of 36 degrees from level ground to the kite string. If she used a full 140-yard spool of string, how high, in feet, was the kite? (Disregard the string sag and

    asked on February 14, 2014
  45. physics

    a boat has a mass of 6800 kg. its engine generate a drive force of 4100 N, due west, while the wind exerts a force of 8000 N, due east, and the water exerts a resistive force of 1200 N due east. what is the magnitude and direction of the boats

    asked on January 31, 2014
  46. Trig

    How do I use the unit circle to evaluate tan(-3pi/4)

    asked on March 25, 2013
  47. Math

    Write an equation of the line satisfying the given conditions in standard form. How do you do this? contains (-4, 0.3) and (3, -3.4)

    asked on September 15, 2010
  48. Math

    1.Radii of congruent circles are equal. True or False 2.The measure of an angle formed by two secants intersecting outside the circle equals a. ½ the sum of the intercepted arcs b. ½ the difference of the intercepted arcs c. ½ the measure of the

    asked on June 10, 2010
  49. Math

    A diameter that is perpendicular to a chord bisects the chord. True or False

    asked on June 10, 2010
  50. English

    Dialogue is often less formal than the surrounding description and narrative. True? False?

    asked on June 2, 2010
  51. general science

    which of the following accurately shows the correct terms for the two sides of a chemical equation, correctly placed to the left or to the right where they belong and also shows the correct symbol that is written between them? reactants --> products

    asked on December 24, 2009
  52. psychology

    The longest period of time during prenatal development is the -Period of the fetus - Third Trimester - Period of the embryo - Germinal Stage - Period of the zygote I believe the answer is period of the fetus.

    asked on November 24, 2008
  53. Physics

    An aircraft has a liftoff speed of 33 m/s. What minimum constant acceleration does this require if the aircraft is to be airborne after a takeoff run of 240m?

    asked on September 10, 2019
  54. Language art

    Consider the main characters from " The Stolen Day and the night the bed fell in a paragraph discuss which character learns the most and which one learns the least. PLZ ANSWER ASAP and yes I have read both stories

    asked on October 6, 2016
  55. Statistics

    Find the margin of error for a 95% confidence interval for estimating the population mean when the sample standard deviation equals 100, with a sample size of (i) 400, (ii) 1600. What is the effect of the sample size? (b) Find the margin of error for

    asked on April 5, 2015
  56. Physics

    A 2.87 kg object initially moving in the positive x-direction with a velocity of +4.87 m/s collides with and sticks to a 1.96 kg object initially moving in the negative y-direction with a velocity of -2.55 m/s. Find the final components of velocity of the

    asked on October 2, 2014
  57. Math 7th grade

    Write a mixed number for each time period. Be sure each fraction is in lowest terms. 8:00am to 9:20 am Not sure how to set up

    asked on September 4, 2013
  58. Chem

    if 15 g of nitrogen reacts with 15 g of hydrogen, 10.5 g of ammonia is produced. what is the percent yeild of this reaction?

    asked on March 7, 2013
  59. physics

    A train travels at a constant speed around a curve of radius 225 m. A ceiling lamp at the end of a light cord swings out to an angle of 20.0º throughout the turn. Draw a free body diagram? What is the speed of the train?

    asked on November 20, 2012
  60. math


    asked on April 18, 2012
  61. Ben davis

    solve for y 4y+10=12

    asked on December 14, 2011
  62. geometry

    what is the midpoint of a line segment with endpoints at (-4, 15) and (22,3)

    asked on May 16, 2011
  63. Managerial Accounting

    Flexible budget planning Sam Yu, the president of Centech Computer Services, needs your help. He wonders about the potential effects on the firm's net income if he changes the service rate that the firm charges its customers. The following basic data

    asked on April 5, 2011
  64. Chemistry

    What mass of 3.0 wt% H2O2 solution is required to provide a 25% excess of reagent for the following reaction with 12 dietary iron tablets that contain ~15 mg of iron per tablet?

    asked on January 27, 2011
  65. Pre Calc

    Determine how many orders of magnitude the quantities differ. A canary weighing 20 g and a hen weighing 2 kg. I want to say 1 but I am not sure...

    asked on December 5, 2010
  66. US History

    1. In the war of 1812 the most effective American Action against British shipping was by: A. US navy frigates B. navies of individual states C. pirates in the Caribbean D. US Navy submarines E. privateering merchantmen 2. The British changed their strategy

    asked on October 21, 2010
  67. Geography

    A prime minister is the leader of what type of region? climate cultural economic political I thought it was a nation but its not a answer choice.

    asked on September 9, 2010
  68. English

    A composite character has characteristics of many people is this true or false?

    asked on June 2, 2010
  69. trig

    if P(-4,1) is a point on the terminal side of angle (theta), in standard position, then what is the exact value of csc (theta)?

    asked on May 12, 2010
  70. HAMLET

    Whats this mean? And liegemen to the Dane.

    asked on May 11, 2010
  71. Chemisrty

    Chlorine gas can be produced in the laboratory by adding concentrated hydrochloric acid to manganese(IV) oxide in the following reaction.. MnO2(s)+ 4HCl(aq)-->MnCl2(aq)+ 2H2O(l)+ Cl2(g) A. Calculate the mass of MnO2 needed to produce 25.0g of Cl2 B. What

    asked on April 12, 2010
  72. Chem B

    What mass of acetylene, C2H2, will be produced for the reaction of 90.g of calcium carbide, CaC2, with water in the following reacion? CaC2(s) + 2H20(l) ---> C2H2(g) + Ca(OH)2(s)

    asked on April 12, 2010
  73. Math

    At a sale Jean received a discount of $10.00 on a coat marked $80.00. What was the rate of the discount?

    asked on April 21, 2009
  74. novel

    After the death of Curly in The Call of the Wild, Buck concludes that no fair play exists in his world and that he will never go down in a fight. The theme illustrated here is apparently derived from London's interpretation of

    asked on November 18, 2008
  75. grammar

    identify simple complete and compound subject and predicate

    asked on October 14, 2008
  76. biology

    G1 is represented by which numbers I AND V II AND IV III IV V

    asked on August 3, 2008
  77. English

    Parallelism can be defined as: a. clarifying main ideas through language choice and sentence structure. b. the process of revising two works simultaneously. c. varying the length and structure of sentences. d. using similar grammatical form for similar

    asked on July 13, 2019
  78. Physics

    A 7150 kg truck traveling east at 5 m/s collides with a 1650 kg car traveling 30 degrees south of west at 20 m/s. After the collision at what angle do the two vehicles move. Express you answer in degrees from the positive x-axis. Use a coordinate where

    asked on July 11, 2017
  79. Physics

    The carbon isotope 14C is used for carbon dating of objects. A 14C nucleus can change into a different kind of element, a neighbor on the periodic table with lower mass, by emitting a beta particle – an electron or positron – plus a neutrino or an

    asked on July 10, 2017
  80. Forensic Science

    If there are 45 drops of alcohol/mL, and the density of alcohol is 0.789 g/mL, what is the blood alcohol concentration of your unknown sample?

    asked on April 7, 2017
  81. math

    the battery lifetime is normally distributed for large samples with a standard deviation of 70 days. if 16% of the batteries have a lifetime of 850 or higher, what is the average battery life?

    asked on January 16, 2017
  82. Reading

    9. As you're revising an essay, you write down several sentences to describe your intended readers. Why should you do this? To make sure you're writing what you know, not what you believe B. To ensure that you're instructing your audience adequately C. To

    asked on December 11, 2016
  83. Chemistry

    If the density of carbon is 3.51 g/cm3, and you have a small diamond (pure carbon) that has a mass of 0.0270 grams, what is the volume?

    asked on September 4, 2016
  84. English

    The MLA format for citing an entire website includes A. an article title. B. source from which you found the website. C. electronic publication information. D. author's apparent credibility.

    asked on March 1, 2016
  85. Physics

    Suppose at one point along the Nile River a ferryboat must travel straight across a 1.29-mile stretch from west to east. At this location, the river flows from south to north with a speed of 2.58 m/s. The ferryboat has a motor that can move the boat

    asked on February 4, 2016
  86. College Chemistry

    the acid dissociation constant for acetic acid is 1.85x10^-5. Calculate the pH at the equivalent point and the pH at one-half the equivalence point for the titration of 25.00 mL of 0.100 M acetic acid with 0.100 M NaOH?

    asked on October 18, 2015
  87. algebra 2

    Find the slope of the line passing through the points (3, -1) and (0, 8)

    asked on October 1, 2015
  88. Chemistry

    In a coffee-cup calorimeter, 1.50 g of NH4NO3 is mixed with 72.0 g of water at an initial temperature of 25.00°C. After dissolution of the salt, the final temperature of the calorimeter contents is 23.65°C. Assuming the solution has a heat capacity of

    asked on February 19, 2015
  89. math

    Tickets to a concert cost $12 for kids and $15 for adults. A total of 300 tickets were sold and total receipts were $4140. How many were adult tickets and how many kids?

    asked on February 4, 2015

    A ball is shot upwards with an initial speed of 31 m/s. While it is in the air it experiences a constant downwards acceleration of 10 m/s2. Find its velocity 1, 2, 3, and 4 seconds after being released.

    asked on February 4, 2015
  91. Chemistry

    2NaN(3) > 2 Na +3N(2) What mass of sodium azide must be reacted to inflate and air bag to 70.0 L at STP?

    asked on October 19, 2014
  92. Physics

    A 55-kg soccer player jumps vertically upwards and heads the 0.45-kg ball as it is descending vertically with a speed of 29 m/s. If the ball is in contact with the player's head for 16 ms, what is the average acceleration of the ball? (Note that the force

    asked on October 3, 2014
  93. chemistry

    1.00 of an aqueous solution contains 1.52g of a compound used in antifreeze. If the osmotic pressure of this solution at 20.0 degree C is 448 torr, calculate the molar mass of the antifreeze compound

    asked on April 28, 2014
  94. chemistry

    calculate the vapor pressure of a solution 0.53 mol of cholestrol in 4.1 molof toluene at 32 degree C. pure toluene has a vapor pressure of 41 torr at 32 degree C

    asked on April 28, 2014
  95. Chemistry

    A set of bookshelves rests on a hard floor surface on four legs, each having a cross-sectional dimension of 2.7 5.2 cm in contact with the floor. The total mass of the shelves plus the books stacked on them is 246 kg. Calculate the pressure in pascals

    asked on December 1, 2012
  96. physics

    An archer shoots an arrow horizontally at a target 13m away. The arrow is aimed directly at the center of the target, but it hits 57cm lower. What is the initial velocity?

    asked on October 23, 2012
  97. Stats

    A two-tailed test is conducted at the 5% significance level. What is the right tail percentile required to reject the null hypothesis?

    asked on September 9, 2012
  98. social studies

    With the vital assistance of _______, Theodore Roosevelt established the first comprehensive national conservation policy

    asked on August 10, 2012
  99. math

    Fifteen (y) less than. Negitive five Solve for y

    asked on April 18, 2012
  100. earth

    3. Show how the length of day changes with latitude by plotting the following points. Use the table below as a graph and place an X in the box where you want to plot a data point. For example, if you find that a day is 10 hours long at 30° N latitude,

    asked on March 26, 2012


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