Popular questions and responses by billy
  1. trig

    half angle formula to find exact value cos 112.5 degree

    asked on March 8, 2016
  2. geometry

    How do I find the surface area of a sphere with a radius of 8cm?

    asked on May 25, 2010
  3. Civics

    In which system of government with the least number of people have power over their own lives A authoritarian dictatorship B democratic republic C representative democracy D Totalitarian dictatorship

    asked on August 12, 2020
  4. Biology

    Which of the following are the final by-products of glucose oxidation during aerobic cell respiration? A. ATP only B. heat only C. carbon dioxide only D. both ATP and heat only E. ATP, heat, and carbon dioxide I know that the following equation is true of

    asked on September 28, 2009
  5. chemistry - vapor pressure

    the vapor pressure of pure water at 25C is 23.8 torr. determine the vapor pressure (torr) of water at 25 C above a solution prepared by dissolving 35g of urea (a nonvolatile, non-electrolyte, MW = 60.0G/MOL) IN 76G of water. answer:21 i just want to know

    asked on September 13, 2010
  6. Physics

    A transistor radio operates by means of a 9.0 V battery that supplies it with a 40 mA current. (a) If the cost of the battery is $0.50 and it lasts for 300 h, what is the cost per kWh to operate the radio in this manner? (b) The same radio, by means of a

    asked on April 14, 2013
  7. Stat

    Thirty randomly selected students took the calculus final. If the sample mean was 89 and the standard deviation was 6.2, construct a 99% confidence interval of the mean score of all students. Assume that the population has a normal distribution. what

    asked on September 30, 2014
  8. chemistry

    Gallium is a metal with a wide variety of uses. Some of its applications include computer memory chips, light emitting diodes and lasers. Radioactive isotopes of gallium are used to image the human body and locate tumors. Naturally occurring gallium

    asked on August 29, 2014
  9. Calculus 2

    A manufacturer sells two products, one at a price of $3000 a unit and the other at a price of $12000 a unit. A quantity q1 of the first product and q2 of the second product are sold at a total cost of $5000 to the manufacturer. Express the manufacturer's

    asked on December 1, 2010
  10. Physics

    Suppose that 4.7 moles of a monatomic ideal gas (atomic mass = 8.5 × 10^-27 kg) are heated from 300K to 500K at a constant volume of 0.47 m^3. It may help you to recall that CVCV = 12.47 J/K/mole and CPCP = 20.79 J/K/mole for a monatomic ideal gas, and

    asked on February 9, 2016
  11. Physics

    A billiard ball traveling at 3.00 m/s collides perfectly elastically with an identical billiard ball initially at rest on the level table. The initially moving billiard ball deflects 30.0° from its original direction. What is the speed of the initially

    asked on November 13, 2014
  12. Physics

    An electric space heater draws 15.5 A from a 120 V source. It is operated, on the average, for 4.0 h each day. (b) How much energy in kWh does in consume in 30 days? (c) At 11 per kWh, how much does it cost to operate the heater for 30 days?

    asked on April 15, 2013
  13. low math

    A section of a boardwalk is made using 15 boards. Each board is 9 1/4 inches wide. The total width of the section is 144 inches. The spacing between each board is equal. What is the width of the spacing between each board? Write your answer in simplest

    asked on November 4, 2015
  14. Math

    A drawer contains 20 black socks and 20 white socks. If the light is off and you reach into the draw to get your socks, what is the minimum number of socks you must pull out in order to be sure that you have a matching pair?

    asked on February 15, 2015
  15. physics

    Mary is standing at a place such that she makes an angle of 42° to the right of the normal of a mirror. Where should Mary's mom stand so that she can best see Mary's reflection in the mirror?

    asked on April 9, 2014
  16. Math

    On the leeward side of the island of Oahu, in the small village of Nanakuli, about 80% of the residents are of Hawaiian ancestry. Let n = 1,2,3.... represent the number of people you must meet until you encounter the first person of Hawaiian ancestry in

    asked on May 21, 2012
  17. biology

    In Drosophila melanogaster, cut wings (ct) is recessive to normal wings (ct+), sable body (s) is recessive to gray body (s+), and vermilion eyes (v) is recessive to red eyes (v+). All three recessive mutations are X- linked. A female fly with cut wings,

    asked on July 18, 2011
  18. computers

    Need help with writing an imageJ plugin which is in java. Here is the question: Create an ImageJ plugin for 8-bit grayscale images of arbitrary size that paints a white frame (with pixel value 255) 10 pixels wide into the image. Here is the current plugin

    asked on February 25, 2011
  19. math

    What is the value of the y-coordinate of the solution to the system of equations x + 2y = 9 and x - y = 3?

    asked on March 16, 2010
  20. math

    In 1920 the record for a certain race was 46.6 sec. In 1950 it was 46.0 sec. let r(t)= the record in the race and t= the number of years since 1920. (a) find a linear function that fits the data r(t)= (round to the nearest hundredth) (b)use the function in

    asked on November 2, 2008
  21. Math

    Choose the best definition for the following term: variable ? A process where you must look for terms that have identical variable parts and then combine their coefficients A process where if two things are equal, one can be put in the place of the other

    asked on June 5, 2019
  22. Algebra

    Solve using FOIL (y-2) (3y3-5y+7)

    asked on March 17, 2014
  23. physics

    a child causes a wagon to accelerate by pulling it with a horizontal force. newton's third law says that the wagon exerts an equal and opposite force on the child. how can the wagon accelerate? (hint: draw a free-body diagram for each object.)

    asked on November 2, 2009
  24. Geometry

    In parallelogram EFGH, let M be the midpoint of side EF, and let N be the midpoint of side EH. Line segments FH and GM intersect at P, and line segments FH and GN intersect at Q. Find PQ/FH.

    asked on May 27, 2020
  25. Algebra 2

    A single die is rolled. find the probability of rolling an even number or a number less than 5, what is the probability Please help me with this question!!

    asked on April 25, 2017
  26. science

    A 13,500 kg jet is moved with a thrust of 5,224,700 Newtons west. what is the acceleration of the jet?

    asked on March 9, 2017
  27. Math

    You bought a new car for $26,500 in 2005, and the value of the car depreciates by $900 each year. Find a formula for V, the value of the car, in terms of t, the number of years since 2005.

    asked on September 9, 2016
  28. science

    An equation has carbon dioxide and water as its products, what type of reaction has taken place?

    asked on January 9, 2016
  29. chemistry

    a.) Write the balanced complete combustion reaction for ethane (C2H6), producing CO2 and water vapour. Make sure to include phases. Also, make sure that the stoichiometric coefficients are whole numbers and are not fractions. b.) What is the enthalpy of

    asked on October 3, 2014
  30. English Check my answers please

    1. In “Raymond’s Run,” which detail supports the prediction that Squeaky will not let Gretchen win the race? (1 point) I put * marks by ones I thought Squeaky is insulted when Mr. Pearson suggests she give someone else “a break” this year.

    asked on September 2, 2014
  31. Physics

    Engineers are developing new types of guns that might someday be used to launch satellites as if they were bullets. One such gun can give a small object a velocity of 4.4 km/s while moving it through a distance of only 1.6 cm. (a) What acceleration does

    asked on January 14, 2013
  32. tax income

    To be a qualifying child, the taxpayer must meet three general tests and five specific tests. What are the three general tests? A. Relationship test, residency test and gross income test B. Support test, age test and relationship test C. Dependent taxpayer

    asked on March 2, 2012
  33. Excel

    You are trying to decide between flat or beveled columns for a chart you are creating within Excel 2007. What tool do you access to select each of these alternatives to see how they look? A. Styles gallery b. Chart gallery The book has the answer listed as

    asked on January 5, 2012
  34. Physics

    An airplane is flying in a horizontal circle at a speed of 105 m/s. The 76.0 kg pilot does not want the centripetal acceleration to exceed 6.35 times free-fall acceleration. a) Find the minimum radius of the plane’s path. Answer in units of m.

    asked on January 9, 2011
  35. Grammar

    Identify the noun, verb,and adverb in the following sentence. The cows entered the barn mooing noisily.

    asked on October 27, 2009
  36. chemistry

    1.equillibrium constant only changes for change in temp? not for change in pressure etc. 2. rate of reaction can be measure by measuring how long it takes for products to form or how long it takes for reactants to be consumed? so is the rate of consumption

    asked on July 20, 2009
  37. 6th grade

    what are the pronouns in this sentence: Doris Cooksey works for the American Family Insurance company

    asked on August 27, 2008
  38. Financial Accounting

    The purchase of office equipment on credit has what effect on the accounting equation?

    asked on February 22, 2008
  39. Chemistry

    The energies, E, for the first few states of an unknown element are shown here in arbitrary units: n= 1, E=-96 n=2, E=-45 n=3, E=-21 n=4, E=-15 ...,... infinity, 0 A gaseous sample of this element is bombarded by photons of various energies (in these same

    asked on June 26, 2020
  40. math

    what is 1 x 0 =?

    asked on October 28, 2019
  41. Algebra the solid according to its description The figure has one base that is a hexagon. Pentagonal pyramid Hexagonal pyramid Hexagonal sphere Pentagonal pyramid

    asked on February 2, 2019
  42. ap calc

    Each of the following parts relates to finding the area underneath the curve , from x = 1 to x = 3. D. Set up, but do not solve, the Riemann Sum which expresses the exact area underneath the curve.

    asked on December 23, 2017
  43. language arts

    I need 2 advantages of being space and 2 disadvantages of being in space. Plz help me.

    asked on December 6, 2017
  44. programming

    Develop a class diagram for a Message class for a cell phone company. Include generalizations for child classes TextMessage, VideoMessage, and VoiceMessage. The Message class has attributes of account number and price. In addition it has the methods

    asked on April 16, 2017
  45. Physics

    Assume the sleigh and horse pulling it are on a level, horizontal surface. Given: mass of sleigh 475 kg / force of horse pulling sleigh 1.5×10^5 / coef. of kinetic friction .15 / coef. of static friction .20 a.) What is the normal force of the sleigh and

    asked on December 12, 2016
  46. health

    without this system in the body you would get really sick because toxins and waste would build up. 1. cardiovascular 2. excretory 3.integumentary 4. muscular

    asked on May 2, 2016
  47. civics

    how did the new jersey plan contribute to the creation of the us constitutions? a-it called for equal representation for all states b-it called for the 3/5 compromise c-it called for the creation of a bicameral congress d-it called for the end of slave

    asked on March 22, 2016
  48. Feedom Similes

    I cant think of any similies about freedom can you give me some ideas

    asked on November 11, 2015
  49. Chemistry

    A volume of 80.0mL of H2O is initially at room temperature (22.00 ∘C). A chilled steel rod at 2.00 ∘C is placed in the water. If the final temperature of the system is 21.20 ∘C , what is the mass of the steel bar? Use the following values: specific

    asked on February 25, 2015
  50. Language Arts Answer check PLEASE

    1) What can you infer from this sentence near the start of "The Story Teller"? Most of the aunt's remarks seemed to begin with "Don't," and nearly all of the children's remarks began with "Why" A) It is a long trip to Templecombe B)the aunt is extremely

    asked on September 12, 2014
  51. english

    how many adjectives are in this sentence? two large oaks covered your evergreens.

    asked on July 2, 2014
  52. Biology

    How much heat is needed to raise the temperature of 20g of copper from 20 degrees celcius to 40 degrees celcius? (The specific heat of copper is 385J/Kg degrees celcius)

    asked on June 5, 2014
  53. finance

    a bond that has a $ 1,000 par value ((face value)) and a coupon interest rate of 10.1% the bonds have a current market value of $1,127 and will mature in 10 years the firm's marginal tax rate is 34% the cost of capital from this debt is %

    asked on May 6, 2014
  54. math

    The table below shows the results of an experiment in which a number cube was tossed 20 times. Outcome of toss: 1 2 3 4 5 6 Number of times Outcome Occurred: 4 1 5 5 2 3 (table reads: outcome of toss 1=4number of times,2=1,3=5,4=5,5=2,and6=3) Based on

    asked on April 25, 2014
  55. Math

    can you show me how 7 friends share 3 liters of soda equally?

    asked on January 13, 2014
  56. Physics

    You take a ride in a fast elevator to the top of a tall building and ride back down while standing on a bathroom scale. During which parts of the ride will your apparent and real weights be the same? During which parts will your apparent weight be less

    asked on January 14, 2013
  57. Physics

    A bag is dropped from a hovering helicopter. The bag has fallen for 1.8 s. What is the bag's velocity? How far has the bag fallen?

    asked on January 14, 2013
  58. Physics

    A brick is dropped from a high scaffold. (a) What is its velocity after 4.5 s? m/s (b) How far does the brick fall during this time?

    asked on January 14, 2013
  59. physic

    An airplane flies due north at 200 km/h relative to the air. There is a wind blowing at 70 km/h to the northeast relative to the ground. What are the plane's speed and direction relative to the ground?

    asked on December 5, 2012
  60. Physics

    A ball is kicked off a field with sufficient force and a trajectory such that it travels horizontally 60m with a maximum altitude of 20m. What was the initial speed? What was the trajectory angle?

    asked on November 8, 2012
  61. Chemistry

    I have a question for chem 1LD webworks number 4. it asks to repeat the previous question steps and find the delta H for the high spin and low spin for Fe(ox)3 3- but calculate with B3LYP, 6-31G* instead of a semi-empirical

    asked on July 17, 2012
  62. Accounting

    On July 15, 2009, Travis purchased some office furniture for $20,000 to be used in his business. He did not elect to expense the equipment under §179 or bonus. On December 15, 2011, he sells the equipment. What is his cost recovery deduction for 2011? A.

    asked on March 19, 2012
  63. Accounting

    Which of the following is not a "trade or business" expense? A. Mortgage interest on a warehouse b. Mortgage interest on a personal residence c. Cost of goods sold is it B

    asked on March 19, 2012
  64. tax income

    The taxpayer's spouse died at the beginning of 2010. He has no qualifying child. Which status should the taxpayer select when filing his tax return for 2011? A. Single B. Married Filing Separately C. Married Filing Jointly D. Qualifying Widow(er) is it C

    asked on March 2, 2012
  65. Tax income

    The tax liability for a married couple with taxable income of $87,312 is: A. $18,068. B. $16,599. C. $14,081. D. $14,078. is it D

    asked on March 2, 2012
  66. Tax Intro

    The taxpayer's spouse died at the beginning of 2010. He has no qualifying child. Which status should the taxpayer select when filing his tax return for 2011? A. Single B. Married Filing Separately C. Married Filing Jointly D. Qualifying Widow(er) is it D

    asked on March 1, 2012
  67. Chemistry

    How many liters of chlorine gas can be produced when 0.98 L of HCl react with excess O2 at STP?

    asked on February 22, 2012
  68. calculus

    Find the rate of change of the area of a circle with respect to the radius r. What is the rate when r = 12

    asked on November 23, 2011
  69. physics

    A ball in tennis is lofted with an initial speed of 15m/s, at and angle of 50 degrees above the horizonal. At this instant, the opponent is 10m away from the ball. He begins moving backwards 0.3s later, hoping to reach the ball and hit it back at the

    asked on September 29, 2011
  70. biology: genetics

    You are attempting to determine whether a plant-derived processed food sample (for example, a corn chip) contains material from a genetically-modified organism (GMO). First, you crush the sample and attempt to extract DNA from it. Next, you perform PCR

    asked on July 20, 2011
  71. Reading

    Maya Angelou's - I Know Why the Caged Bird Sings is a poem I need help Please anyone 1. Why is Marguerite often embarrassed when Mrs. Flowers visits? 2. What is the relationship between Momma and Mrs. Flowers? 3. What does Mrs. Flowers teach Marguerite

    asked on June 17, 2011
  72. teacher

    Which machine would you use to protct a graphic display? A spiral binder b pantograph C laminator D dry-mount press I would say C, but I also like d too. Can someone help me.

    asked on April 26, 2011
  73. world history

    compare/contrast the rise of communism and modern events in china and Russia help please!

    asked on January 11, 2011
  74. Chemistry

    Calculate the enthalpy change per gram for the combustion of ethane (C2H6(g)).

    asked on December 4, 2010
  75. AP Chemistry

    A mixture of argon and mercury vapor used in advertising signs emits light of wavelength 610 nm. Calculate the energy change resulting from the emission of 1.00 mol of photons at this wavelength. Answer in units of kJ/mol.

    asked on November 30, 2010
  76. English

    What does foreshadowing mean?

    asked on October 17, 2010
  77. Physics

    Kyle is flying a helicopter and it is rising at 6.0 m/s when he releases a bag. After 2.0 s (a) what is the bag's velocity? -13.6 m/s (b) how far has the bag fallen? (c) how far below the helicopter is the bag?

    asked on September 13, 2010
  78. algebra

    / - WRITE AN EQUATION TO FIND X I'M LOOKING FOR THE DEGREE OF THE TWO ANGLES /(2X+12) a ------------- / / (6X+16) b ---------------- /

    asked on May 20, 2010
  79. Trigonometry

    a satellite camera takes a rectangular - shaped picture. the smallest region that can be photographed is a 4 - km by 6 - km rectangle. as the camera zooms out, the length l and width w of the rectangle increase at a rate of 3km/sec. how long does it take

    asked on March 15, 2010
  80. Grammar

    If "noisily" is an adverb in the following sentence, what is "mooing"? The cows entered the barn mooing noisily.

    asked on October 27, 2009
  81. History

    Why does the Tenth Amendment use the term: reserved, to describe the powers that belong to the people and the states?

    asked on September 9, 2009
  82. 7th grade

    What is Indirect measurement?

    asked on June 7, 2009
  83. social studies

    an example of atype of goverments which ruler of small groups.

    asked on April 12, 2009
  84. 4th grademath

    can't remember how to round off numbers such as 105,219 to the nearest place value.105,219 is supposed to be rounded off to the nearest hundred thousand. 17,340,206 is supposed to be rounded off to the nearest hundred thousand place value and so on. would

    asked on October 22, 2008
  85. PHYSICS PLEASE HELP BILLY!!! there are about thr

    A 10.2 kg crate is pulled up a rough incline with an initial speed of 1.5 m/s. The pulling force is 123.0 N parallel to the incline, which makes an angle of 14.6◦ with the horizontal. The coecient of kinetic friction is 0.39 and the crate is pulled a

    asked on October 13, 2008

    Two bullets have masses of 3.4 g and 8.1 g, respectively. Each is fired with a speed of 44.0 m/s. a) What is the kinetic energy of the first bullet? Answer in units of J. 009 (part 2 of 3) 10.0 points b) What is the kinetic energy of the second bullet?

    asked on October 13, 2008
  87. physics

    A flight attendant pulls her 69.1 N flight bag a distance of 280 m along a level airport floor at a constant velocity. The force she exerts is 32.7 N at an angle of 50.2◦ above the horizon- tal. a) Find the work she does on the flight bag. Answer in

    asked on October 13, 2008

    A catcher “gives” with a baseball when catching it. If the baseball exerts a force of 460 N on the glove such that the glove is displaced 5.85 cm, how much work is done by the ball? Answer in units of J.

    asked on October 13, 2008
  89. floral design

    examination 03005900

    asked on November 9, 2007
  90. pre-algebra

    Solve an equation- 4r-6+2r=6 Write an equation and solve it- Thirty-six sections of fencing,all the same length,are joined to form a fence 180m long. How long is each section of fencing? Write an inequality for the sentence. The total t is greater than

    asked on March 7, 2007
  91. Math

    Evaluate the expression 8n for n = 1.

    asked on January 9, 2020
  92. Algebra

    Are these two equations perpendicular when graphed? y=9x-2 and 3y=7-x

    asked on November 24, 2019
  93. Statistics

    A ski patrol unit has six members available for duty, and two of them are to be sent to rescue an injured skier. In how many ways can two of these six members be selected? Now suppose the order of selection is important. How many arrangements are possible

    asked on October 2, 2019
  94. social

    which was a significant reason middle colonies were more favorable to farmers than new england? select all that apply. The climate was cooler The growing season was longer The soil was more fertile Crops grew better along the ocasts THere were more people

    asked on September 26, 2019
  95. math

    An investor has up to $450,000 to invest in three types of investments. Type A pays 6% annually and has a risk factor of 0. Type B pays 10% annually and has a risk factor of 0.06. Type C pays 12% annually and has a risk factor of 0.08. To have a

    asked on September 5, 2019
  96. Math

    Can you use inequalities to figure out this coded word? For each problem  Solve and graph the combined inequality.  State whether the combined inequality is a conjunction or disjunction and explain why.  Determine which letter is in the solution

    asked on May 16, 2019
  97. algebra

    Sam is playing songs on her mp3 player. She has 7 hip-hop songs, 9 rock songs, and 7 pop songs. If she has the mp3 player play the songs at random without repeating, what is the probability that the first song will be a rock song and the second song will

    asked on April 20, 2019
  98. physics

    A football is kicked at ground level with a speed of 18.0 m/s at an angle of 38.0 degrees to the horizontal. How much does it hit the ground?

    asked on October 26, 2018
  99. math

    By what percent will a fraction change if its numerator is decreased by 50% and its denominator is decreased by 25%?

    asked on October 23, 2018
  100. Chemistry

    What volume, in milliliters, of a stock solution of 2.55 M NaOH would you have to use to prepare 1.00 L of a 0.500 M NaOH?

    asked on October 17, 2018


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