# Billy

Popular questions and responses by Billy
1. ## trig

half angle formula to find exact value cos 112.5 degree

2. ## geometry

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

3. ## 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

4. ## 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

5. ## 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

6. ## 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

7. ## 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

8. ## 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

9. ## 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

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

11. ## 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?

12. ## 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

13. ## 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?

14. ## 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?

15. ## 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

16. ## 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,

17. ## 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

18. ## math

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

19. ## 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.)

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

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

22. ## 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

23. ## science

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

24. ## 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.

25. ## 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

26. ## Algebra

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

27. ## 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

28. ## 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.

29. ## 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!!

30. ## 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

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.

32. ## 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

33. ## 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

34. ## 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.

35. ## Physics

Heat energy is the energy associated with changes in internal energy. If no phase changes occur, the transfer of heat energy is accompanied by a change in?

36. ## 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.

37. ## Grammar

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

38. ## 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

39. ## maths

they call me a man,but i will never have a wife.I was given a body,but not a life.they made me a mouth,but did not give me breath.water gives me life,but the sun brings me death! what am i ?

40. ## math

y=-7/10x-10/7 find the slope and y-intercept can someone please hlp, and explain how you came up with the answer

41. ## Financial Accounting

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

42. ## 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

43. ## math

what is 1 x 0 =?

44. ## 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.

45. ## language arts

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

46. ## 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

47. ## Science

An empty 1.5 litre Pepsi bottle is filled with uncooked rice. A marble is put into the bottle and a pencil used to push it down until it is buried in the rice. The bottle is capped and shook hard back and forth. The bottle is then placed on the table. What

48. ## 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

49. ## 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

50. ## science

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

51. ## Feedom Similes

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

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

53. ## 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)

54. ## 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 %

55. ## math

Two sides of an equilateral triangle have lengths x+2 and -2x+20 which could be the length of the third side:14-x or 2x+4? A. 14-xonly B. Both 14x and 2x+4 C. 2x+4 only. D. Neither 14-x nor 2x+4

56. ## MAT-134 Math XL

Factor out the greatest common factor. Simplify if possible. 9x^6-63x^5+36x^4=

57. ## Math

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

58. ## 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

59. ## 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?

60. ## 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?

61. ## 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?

62. ## 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?

63. ## 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

64. ## 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

65. ## 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

66. ## 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

67. ## 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

68. ## Chemistry

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

69. ## 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

70. ## 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

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

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.

73. ## world history

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

74. ## Chemistry

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

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.

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?

78. ## algebra

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

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

80. ## Grammar

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

What is Indirect measurement?

82. ## social studies

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

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 coecient of kinetic friction is 0.39 and the crate is pulled a

84. ## PHYSICS

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?

85. ## 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

86. ## PHYSICS

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.

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

88. ## floral design

examination 03005900

89. ## 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

90. ## Math

Evaluate the expression 8n for n = 1.

91. ## Algebra

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

92. ## 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

93. ## 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

94. ## 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

95. ## 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

96. ## 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

97. ## Algebra

1.name the solid according to its description The figure has one base that is a hexagon. Pentagonal pyramid Hexagonal pyramid Hexagonal sphere Pentagonal pyramid

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?

99. ## math

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