Questions Asked onMarch 16, 2015

1. statistics

According to a college survey, 22% of all students work full time. Find the mean and standard deviation for the number of students who work full time in samples of size 16.

2. Tech. Ed

delia is developing a storyboard for her movie about her autoniography. In this lesson you learned about the phases of creating an informative movie. In was phase of movie creation is delia? A. research Phase B. Planning Phase C. Editing Phase D. creation

3. Health

1. flammable materials A. catch fire easily and burn easily B. are only something construction workers need to worry about C. are safe if stored correctly D. don't catch fire easily 2. You can prevent most accidents true or false 3. Avoid deserted places,

4. stats

Find the probability of at least 2 girls in 10 births. Assume that male and female births are equally likely and that the births are independent events.

5. consumer math

You are paid \$7.45/hr at your part-time job. Your deductions are FICA (7.65%), federal tax withholding (10.65%), and state tax withholding (5.7%). Your travel expenses are \$5.70 per day worked. You work 12 hours over a 3-day period of time. What is your

6. Art

How does a landscape artist make an object in the foreground appear closer than an object in background? A. By making the object in the foreground larger in comparison to the background objects. B. By making the object in the foreground less detailed in

7. Math

In a survey of 300 college graduates, 58% reported that they entered a profession closely related to their college major. If 6 of those survey subjects are randomly selected without replacement for a follow-up survey, what is the probability that 3 of them

8. English

Can you check my answers for "To Kill A Mockingbird"? please help Chapter 1 from the passage that begins with "Maycomb was an old town" and ends with " Mrs. Dubose was plain hell" . 1. The narrator creates a mood for Maycomb primarily through the use of A.

9. History

1.what was the purpose of jim crow laws in south Carolina? A,to stop African Americans from voting B,to stop poor whites from voting C,to take land for Africans americans D,to help african americans gain jobs I believe its b idk? 2.what was the purpose of

asked by Help me,plz
10. physics

Which of the following statements about electric field lines due to static charges are true? (Select all that apply.) Electric field lines can never cross each other. Static charges can create closed loop electric field lines that do not begin or end on a

11. ss

1.which of the following best describes the conservative democrats in south carolina during reconstruction? a. they favored small land owners and workers b. they were wealthy and formerly confederate leaders c. the believed in social equality between races

12. books

Which is the best summary of the argument between Azaz and the Mathemagician in Act I of The Phantom Tollbooth?

13. L.A.

1. Her brother lives near the sea. It makes him happy. Which sentence combines the two sentences using a gerund phrase? A. Her brother lives near the sea, it makes him happy. B. Living near the sea makes her brother happy. C. It makes her brother happy to

14. science help

a 2500kg car moves at 15m/s 2; 15m/s2 is the __________ of the car

15. Math

I am a polyhedron. I have 7 faces. Six of my lateral edges are equal in length. One of my faces has six sides. Who am I?

16. STATS

An IRS auditor randomly selects 3 tax returns from 55 returns of which six contain errors. What is the probability that she selects none of those containing errors?

17. chem

Calculate the number of moles required to make 100 mL of a 3.0 M solution of CuSO4·5 H2O. is the answer .03? if not walk me through the steps thanks

18. Tech Ed

Soren is organizing the files that he will use in the movie he is creating. his files include the following extensions: jpg, .gif, .wmv, and .mov. which subfolders should he place in the unit project folder. choose all that apply A. images B. audio C.

19. calculus

a 50 m long chain hangs vertically from a cylinder attached to a winch. assume there is no friction in the system and that the chain has a density of 5 kg/m. how much work is required to wind the entire chain onto the cylinder using the winch

20. English

Identify awkward or pretentious diction in the following sentences, and revise each sentence as necessary to improve clarity. 2. Let’s have a discussion of the essay you read for homework. 3. Khaya finally came to the realization that she preferred

21. Math

The following circle graph was published in the Cane Country annual report. If there are 1,000 registered voters in Cane Country, how many 35-45 years old? On the graph 35-45 years old is graph at 30%. A. 150 voters B. 250 voters C. 300 voters D. 350

22. Math

How many lateral edges does a 50-gonal pyramid have? How many lateral faces?

23. statistics

In a certain lottery, five different numbers between 1 and 31 inclusive are drawn. These are the winning numbers. To win the lottery, a person must select the correct 5 numbers in the same exact order in which they were drawn. What is the probability of

24. Math

An art class is planning to paint a rectangular mural with an area of 60 square feet. It has to be at least 4 feet high but no more than 6 feet high. The length and width have to be whole numbers. List all possible lengths for the mural.

25. math

8 friends attend a read a thon. They take turns reading aloud for a total of 3 hours. If each friend reads for the same amount of time, what fraction of each hour does each friend spend reading?

26. Physics (Tension and Springs)

An archer must exert a force of 375 newtons on the bowstring so that the string makes a 35 degree angle with the vertical. a)find the tension in the bowstring b)if the applied force is replaced by a stretched spring, and the spring is stretched 30 cm from

27. reading and writing

Please read the following excerpt from an essay. The sentences are numbered to help you respond to the question that follows. (1) After Sean was arrested for breaking into a pawnshop, I began to wonder. (2) Why did some kids from my neighborhood end up in

28. chemistry

If a solution of lead iodide has [I-] = 1.1x10-4 M, what is the lead(II)ion concentration at equilibrium?

29. Math

Theo made the table below to show the number of middle school students who attented the last football game. if this data were displayed in a circle graph, how many degrees would be in the sector representing the 8th grade Grades 6,7,8 # of students in 6th

30. Chemistry - Solubility

Calculate the solubility of copper(II) sulfide in a solution that is 0.150 mol L^-1 in NaCN. I am very confused on what to do. Since there are no common ions, I know that this is not the common ion effect. Also I do not believe this is a pH effect

31. Math

A bacteria has a doubling period of 9 days. If there are 2550 bacteria present now, how many will there be in 27 days?

32. Art

What is the main subject of Persian landscape art, and what does it communicate about the Persian culture and worldview? A. Rivers; they represent life and are central to Persian mythology. B. People; Persians enjoy group gatherings and value

33. Economics

VERY HARD PLEASE HELP Kristin lives in Alaska. Ben lives in Rhode Island. They each drive a car with a 12-gallon fuel tank. When Kristin fills her empty gas tank in Alaska, she has to pay a federal gasoline tax of \$.18 (or 18 cents) per gallon, plus a

34. physics

Two ice skaters hold hands and rotate, making one revolution in 2.4 s. Their masses are 60 kg and 70 kg, and they are separated by 1.5 m. Find the angular momentum of the system about their center of mass.

35. Economics

The assessed value of Patty's residential property was \$200,000 in 2004. In 2006, the assessed value increased to \$225,000. The property tax rate in both years was 1.2 percent. Patty earned \$60,000 each year. Determine Patty’s property taxes for 2004 by

36. Language Arts

What is the analogy in "O Captain My Captain"? I tried looking it up but the answers were not making sense... So if anyone could clarify it for me that would be great! :)

37. Art

What does this painting by Constant Troyon Suggest about his culture's relationship with nature? If you search File:Constant Troyon - Coast near Villers the painting should A. humans lived in fear of nature B. humans lived in harmony with nature C. humans

38. physics

What is the magnitude and direction of an electric field that exerts a 4.00 ✕ 10 -5 N upward force on a - 1.80 µC charge? N/C

39. math

The organizer of a television show must select five people to participate in the show. The participants will be selected from a list of 24 people who have written in to the show. If the participants are selected randomly, what is the probability that the 5

40. Economics

David lives in Manhattan, where the combined state/local sales tax is 8.375 percent. David just purchased a digital camera that was priced at \$800. Determine the sales tax he paid by calculating 8.375 percent of \$800 (multiply by 0.08375). How much sales

41. physics

A ball is thrown upward. Its initial vertical component of velosity is 30m/s and its initial horizontal component of velosity is 20m/s. What is the ball's speed 2 s later? Give: Viy = 30m/s Vix = 20m/s T = 2 sec a) V = gt =10m/sec2 x 2 sec= 20 m/sec b) c2

42. Pre-Calculus

1. A projectile is fired straight up from a height of 6 feet. Its height (h) in feet after t seconds is given by h = 6 + 192t -16t^2. Answer: h = -16t^2 + 192t + 6 h = -16( t^2 -12t +36) + 6 +576 h = -16 (t-6)^2 +582 The maximum height will be 582 feet. 2.

43. Physics

A 65 kg sprinter completes a 100 m race in 9.83 s. Calculate the average kinetic energy of the sprinter.

44. Math

Q. The rodeo stared 7 minutes late. It was scheduled to last 3 hours, but it ran 22 minutes longer. If the rodeo ended at 9:59 p.m, at what time did it begin? - A. Do I muplite 7 by 3 and than add the answer with 22?

45. PHYSICS

A simple open U-tube contains mercury. When 11.9 cm of water is poured into the right arm of the tube, how high above its initial level does the mercury rise in the left arm? Take the density of mercury to be 13.6 g/cm3 and the density of water to be 1.00

46. Economics

4. Cecelia is an avid art collector who owns many original works of art. Recently, she decided to sell an oil painting by Norman Rockwell. The buyer paid \$500,000 for the painting. Since Cecelia had paid just \$350,000 for the painting, she made a profit,

47. Chemistry

How much heat is required to convert 6.78g of ice at − 14.0∘C to water at 24.0∘C ?

48. Science

What is a four-cell battery with the cells connected in series with each other? How would it look like?

49. physical

1.What kind of information is indicated by the graph of the acceleration due to gravity versus ball¡¯s mass if the slope of the curve is zero?

50. Math

Which capital letters, in block print style (A, B, C, D, E, F, G, H, I J, K L M, N O, P, Q, R, S, T U, V, W, X, Y, Z) have reflection symmetry(ies)? Rotational symmetry(ies)?

51. Math

Q. The rondo stared 7 minutes late. It was scheduled to last 3 hours. But it ran 22 minutes longer. If the rodeo ended at 9:59 p.m, at what time did it begin? - A. So, do I mulpite 7 by 3 = 21, than muplite that answer by 22. than divide that by 9:59 p.m?

52. ethic and social responsibility

With which of these statements would Hippocrates agree? (Points : 1) all the above Doctors have a duty to care for others’ children as if they were their own. A doctor has a duty to teach people the art of medicine if they are interested. A doctor ought

53. ethic and social responsibility

In euthanasia, ___________________ (Points : 1) patients take a lethal dose of medication on their own. the doctor acts in some manner to bring about the death of the patient. the doctor is present when a family member administers the lethal dose. all of

54. Art!

what 3-d imaging use to capture a digital map of an artifact? a. electromagnetic radiation b. laser technologe c. laser technology d. photography

55. AP Chemistry

To have a buffer with a pH of 2.50, what volume of 0.510 M NaOH must be added to 100. mL of 0.230M H3PO4?

56. Science

A horizontal force of 24 N is being applied to a box on a level surface. The box is accelerating at the rate of2280889against a frictional force of 14 N. What is the mass of the box?

57. ethic and social responsibility

The relativist would agree with which statement about stem cell research? (Points : 1) It should not be practiced. It should be practiced in places where people believe that life begins when an egg is fertilized. It should not be practiced in places where

58. Math

Name a flat surface in nature that has reflection symmetry and one that has rotational symmetry.

59. Economics

Mallory's total income last year was \$24,000, but she could deduct \$12,000 for various reasons. Her taxable income equals the amount left over after deductions. If she had to pay 15 percent of her taxable income in federal income tax, which you can

60. Calc

A balloon, 50 feet from an observer is rising at 20 ft/sec. At 5 sec after lift off, a)how fast is the distance between the observer and the balloon changing? b)How fast is the angle of elevation changing. I just need to know what formals to use. I know

asked by Ryan kustin
61. Science

What kind of substance has properties that reflects light very well, warms up in my hand, flattens out when it hits with a hammer and conducts electricity?

62. Algebra

1. What polynomial has a graph that passes through the given points? (-2, 2) (-1, -1) (1, 5) (3, 67) A. y = -x3 + 4x2 + 2x - 2 B. y = x3 + 4x2 + 2x - 2 C. y = x4 + 4x3 + 2x2 - 2x D. y = x3 - 4x2 - 2x - 2 B? 2. Write -2x 2(-5x 2 +4x 3) in standard form. A.

63. Math

It has two long sides and two short sides. What shapes are possible?

64. Science

When a football is kicked into the air, it has a velocity of 32m/s at an angle of 25º. At the very top of the ball’s path, what is it's vertical velocity?

65. statistics

An unprepared student makes random guesses for the ten true-false questions on a quiz. Find the probability that there is at least one correct answer.

66. Math

What is the difference between unique triangle, more than one triangle, and no triangle?

67. math

Find the fifth term of a geometric sequence whose fourth term is 8/9 and whose seventh term is 64/243.

68. Math Help

A right triangle has a leg B of length 7 and a hypotenuse of length 11. What is the length of the other leg A? Round to the nearest tenth, if necessary. A. 2.0 B. 8.5 C. 13.0 D. 9.6 Please help, I was gone for this lesson, just need someone to explain how

69. CHEMISTRY

How many moles of methane gas, CH 4 , are in a 1.00×103L storage tank at STP?

70. chemistry

In a coffee cup calorimeter, 50 mL of 0.1 M HCl and 50 mL of 0.1 M NaOH are mixed to yield the following reaction: HCl + NaOH  NaCl + H2O. The two solutions were initially at 22.1 oC and the final temperature is 24.2 oC. Calculate the heat that

71. physics

dahnay carried a box (5,4)m.the box had a mass of 5kg.dahnay says that over 300J of work was done on the box . is dahnay correct?explain the answer.

72. chm

The equilibrium constant for the equation 2 H2(g) + CO(g) CH3OH(g) Is 19 at a certain temperature. If there are 3.11 x 10-2 moles of H2 and 5.79 x 10-3 moles of CH3OH at equilibrium in a 6.75 L flask. What is the concentration of CO? At 1280 °C the

73. Algebra

What are the intercepts of the equation? Graph the equation. -3x + 4y = -12 A. x-intercept: (4, 0) y-intercept: (0, –3) B. x-intercept: (–3, 0) y-intercept: (0, 4) C. x-intercept: (4, 0) y-intercept: (0, –3) D. x-intercept: (–3, 0) y-intercept: (0,

74. Algebra help please

Let f(x) = -5x - 4 and g(x) = 6x - 7. Find f(x) + g(x) A. x + 3 B. x - 11 C. -11x = 3b D. -11x - 11 C?

75. chemistry

The enthalpy of formation of MX is ΔHf° = –493 kJ/mol. The enthalpy of sublimation of M is ΔHsub = 143 kJ/mol. The ionization energy of M is IE = 437 kJ/mol. The electron affinity of X is ΔHEA = –317 kJ/mol. (Refer to the hint). The bond energy of

76. ss

which was the most important industry in south carolina during reconstruction a. meat packing b. oil c. textiles d. iron

77. math

paige's dad just made a new front door for their house.the door measures 84 inches by 54 inches.how many square inches will paige have to paint if she paints the front side of the door.

78. math

Plot three points with first coodinate equal to (-2.8) and join them

79. english

Dear Ms. Sue, thank you for your answer. I'm not a native speaker, but I also feel that "Higher Educational Institution" sounds a bit strange, however, it's the official name of the institution (in all documents), so do you think Public Stock Company

80. reading and writing

Which of the following is a common error in composing a thesis statement? A. Your thesis statement is specific as opposed to general. B. You offer an original perspective on a familiar theme. C. You focus your thesis statement after you begin writing. D.

81. math

A football team gained 4 in one play. In the next play, the team lost 4 yards. What is the team's net yard gain.

82. maths

A series of steps lead to a temple.The number of step is 30. The height of each step is 20 cm.Then find the height of the temple from the base.

83. computer applications

John wants to see the formulas he has used in his spreadsheet but he does not want to see the results of the formulas. How does he display his formulas? A. Click on Trace Precedents. B. Click Print Formulas. C. Click on Show Formulas. D. Click Evaluate

84. Chemistry

1. Imagine you have a saturated solution of Ca(OH)2, at equilibrium, that has some undissolved Ca(OH)2 precipitated on the bottom of the test tube. If you add an additional scoop of Ca(OH)2 to the solution will concentration of [OH-] in the solution

85. calculus trigonometric substitution

∫ dx/ (x^2+9)^2 dx set x = 3tan u dx = 3 sec^2 u du I = 3 sec^2 u du / ( 9 tan^2 u + 9)^2 = 3 sec^2 u du / ( 81 ( tan^2 u + 1)^2 = sec^2 u du / ( 27 ( sec^2 u )^2 = du / ( 27 sec^2 u = 2 cos^2 u du / 54 = ( 1 + cos 2u) du / 54 = ( u + sin 2u / 2) / 54 =

86. statistics

A certain type of dvd player is sold at just two stores. 30% of sales are from store A and 70% of sales are from store B. 2.7% of the dvd players sold at store A are defective while 3.7% of the dvd players sold at store B are defective. If Kate receives

87. Math

Larry mows the same-sized lawns in his neighborhood each weekend during the summer. Part A Each time Larry mows a lawn he uses 1/6 of a gallon of gasoline. If he has 2/3 of a gallon of gasoline, how many lawns can he mow before he needs to buy more

88. calculus

find a projectile fired with an initial velocity of 128 feet per second at an angle of 26 degrees

89. Math

A bottle of water costs \$1.50. Explain how you would make a graph of four ordered pairs to model the total cost of the water in terms of the number of bottles.

90. math

Would you guys mind help me to solve this question? : The scale of a map is 1:1000. What are the actual dimensions of a rectangle which appears as 4cm by 3cm on the map? What is the area on the map in cm squared?what is the actual area in meter squared? I

91. physics

The body of a 1285 kg car is supported on a frame by four springs. The spring constant of a single spring is 2.80 × 104 N/m. Four people riding in the car have a combined mass of 275 kg. When driven over a pothole in the road, the frame vibrates and for

92. math

An art class is planning to paint a rectangular mural with an area of 60 square ft. It has to be at least 4 ft. but no more than 6 ft. High. How long could the mural be if the length and height have to be whole numbers?

93. Math

In a game, you have a 1/27 probability of winning \$100 and a 26/27 probability of losing \$4. What is your expected value?

94. math

scientist is mixing a chemical solution for an experiment solution contains 3/8 of chemical solution 1/6 ounce saline solution what is the unit rate of chemical to saline solution? 3/8 x 1/6 + 3/48 divided by 3 + 1/16 is this right

95. chemistry

The number of moles of solute in a bottle containing 300 mL of 0.178 mol/L sodium sulfite solution is

96. chm

The equilibrium constant for the equation 2 H2(g) + CO(g) CH3OH(g) Is 19 at a certain temperature. If there are 3.11 x 10-2 moles of H2 and 5.79 x 10-3 moles of CH3OH at equilibrium in a 6.75 L flask. What is the concentration of CO? What is the Kp at 1439

some 1 centimeter squares are arranged in a staircase pattern. The drawing below shows a 3 step staircase. the area is 6 square centimeters and the perimeter is 12 centimeters. what is the area and perimeter of a 10 step staircase? pls help!

98. PHYSICS

a 50kg boy suspends himself from a point on a rope tied horizontally between two vertical poles. the two segments of the rope are then inclined at angles 30 degrees and 60 degrees respectively to the horizontal. the tensions in the segments of the rope is

asked by ESSIEN UBONG

A filling machine is designed to fill soda bottles with 16 ounces of soda. The distribution for the weight of the bottles is normal. Twenty bottles are selected and weighed. The sample mean is 15.3 ounces and sample standard deviation is 1.5 ounces.

asked by Leo Elvis
100. physics

dahnay carried a box (5,4)m.the box had a mass of 5kg.dahnay says that over 300J of work was done on the box . is dahnay correct?explain the answer.

101. Chemistry

Container A contains argon gas at 0C and pressure 380mmHg. Container B of volume 700 ml contains neon gas at 25C and pressure of 3atm. Both of these gases are placed in a 2L vessel at 273K and the total pressure is 1.46atm. What is the volume of container

102. Global Studies

how do the positions of governor general and prime minister in the canadian government differ?

103. Math

the eighth grade students are selling magazine subscriptions to raise money for a class trip. they earn \$3 for every subscription they sell. so far, they have earned \$228 of the \$396 needed. how many more subscriptions must the students sell to meet their

104. programming

how do you write a flow chart for program that accepts a salespersons ID num and num of policies sold in the last month, and displays the data only if the salesperson is a high performer-a person who sells more than 25 policies in the month?.. Im lost on

105. math

Q2.Plot three points with second coordinate equal yo (1.3) and join them . Q3.What is the slope of the line y= -1/3x +3 (B)Does it slope upwards? (C) It is steeper than the line y=-1/2x -5? Give reason for your answer. Q4.The equation of the straigth line

A firm claims that only 10% of it's accounts receivables are over 30 days past due. The bank that supplies working capital or interim loans to the firms is suspect of the figure and accordingly takes a random sample of 100 accounts of the firm. Find the

asked by Leo Elvis
107. ethic and social responsib

People who work in the field of mental health__________a________ (Points : 1) may reveal information in cases where the patient intends bodily harm to another person. may never reveal confidential information. ought to never reveal any information. may not

108. Math

1. What is the value of z so that -9 and 9 are both solutions of x^2+z=103? a) -22 b) 3 c) 22 d) 184 2. What is the value of b in the triangle below? The triangle has one side that is 3b and another that is just b. The area of the triangle is 24in.^2. a)

There are 300 students enrolled in Business Statistic. Historically, exam scores are normally distributed with a standard deviation of 30.9. Your instructor randomly selected a sample of 30 examinations and finds a mean of 74.2. Determine a 90% confidence

asked by Leo Elvis
110. physics

dahnay carried a box (5,4)m.the box had a mass of 5kg.dahnay says that over 300J of work was done on the box . is dahnay correct?explain the answer.

asked by plzzzzz help
111. chemistry

N2 + 3H2 = 2NH3. What is the DeltaGo of the following reaction? 33.5 kJ/mol 34.5 kJ/mol 35.5 kJ/mol 36.5 kJ/mol

"The steady wash of the waves, the bobbing and swaying of the ship, the creak and groan of timbers, all told me the Seahawk was plowing toward home...Nervously,I glanced over my shoulder through the steerage cabin...I had neglected to consider something

113. MATH

A ship sails north, then turns 45° in a clockwise direction. After another hour, it turns clockwise 90°. In which direction is the ship now sailing? 90 + 45 = 135° west?

114. ethic and social responsibility

A utilitarian might use which statement in an argument that supports the use of embryos in stem cell research? (Points : 1) The harm caused to the embryos outweighs the good that comes from the research. There would be greater overall happiness from the

115. Math

Is 1/5, 3/8, 4/10, 0.45, and 0.6 in order from least to greatest? I'm still trying to figure this stuff out. :/

116. math

Let g be a function that is defined for all x, x ≠ 2, such that g(3) = 4 and the derivative of g is g′(x)=(x^2–16)/(x−2) with x ≠ 2. Find all values of x where the graph of g has a critical value. For each critical value, state whether the graph

117. chemistry

How to prepare 14M Sulfuric acid

asked by Vitthalsing Rajput
118. Physical Chemistry

If a 30g piece of ice at -5C is immersed in 125mL of water at 25C in an insulated container... A. Determine the final temperature and final composition of the system B. Determine the entropy changes of the ice and the water and the overall entropy change

119. Chemistry

  show that the time dependent expectation value for the position x and momentum p match the solution of newton classical equation for HO drive the amplitude of vibration?

120. chemistry

An aqueous solution contains 0.445 M ethylamine (C2H5NH2). How many mL of 0.226 M hydrochloric acid would have to be added to 150 mL of this solution in order to prepare a buffer with a pH of 10.200

121. engineering

A steel tube 30 mm outside diameter and 25 mm internal diameter and length 500 mm is subjected to a tensile load of 37 KN, determine the change in length in mm to 3 decimal places when the load was applied. For the material E = 210 GPa.

122. math

A plane flying at 200 knots left an airport A( 30° S, 31°E) and flew due North to an airport B( 30° N 31° E) (a) Calculate the distance covered by the plane, in nautical miles (b) After a 15 minutes stop over B, the plane flew west to an airport

123. physics

n automobile traveling at a speed of 29.3 m/s applies its brakes and comes to a stop in 4.9 s. If the automobile has a mass of 1.2 103 kg, what is the average horizontal force exerted on it during braking? Assume the road is level. magnitude N direction

124. Physics

Problem Solving. Anne throws a ball horizontally from the top of a building that is 50 m high. He hopes the ball will reach the swimming pool that is at the bottom of a building 12 m horizontally from the edge of the building. If the ball is to reach the

125. Algebra help please

Let f(x) = 3x - 6 and g(x) = x - 2. Find f/g and its domain. A. 3; all real numbers B. 3; all real numbers except x = 2 C. -3; all real numbers except x = 3 D. 1; all real numbers B ?

126. statistics

The mayor of the town of Quahog, Rhode Island, Adam West, conducted a study to determine the mean household income of his constituents. The study surveyed 500 households and determined that the sample mean was \$30,000. The population standard deviation is

127. Chemistry

HCI is a strong acid. What is the ion concentration, (H+), of a 0.0015M solution of HCI? What is the pH of a 0.0015M solution of HCI? I have looked in my book but it not making sense. I am not sure where to even start the problem. A little guidance please

128. Vectors

Two lines with the slopes m1=4/3 and m2=-7/2 intersect at (3,4). Determine the equations of the two lines and check your answer by solving them

129. english

Hello. I would really appreciate some help. I need to translate the official name of a company into English. Please have a look and say whether the result sounds natural English: Public Joint Stock Company "Higher Educational Institution Delika Business

130. Math

Can you please explain how to do this? 8=4w divided by 3

131. chemistry

A restaurant serves tea in aluminum mugs. The aluminum mug has a mass of 125 g, initially at 24.0 oC with 341 mL tea at 80.0oC. What is the final temperature of the tea after the tea and mug attain equilibrium. Assume the tea has the same specific heat

132. algebra

Write the sum as a product then simplify the product. (-4)+(-4)+(-4)+(-4)

133. chemistry

The concentration of a solution made by diluting 10.0 mL of 0.685 mol/L NaBr to 300 mL is

134. Statistics

A firm claims that only 10% of its accounts receivables are over 30 days past due. The bank that supplies working capital or interim loans to the firm is suspect of the figure and accordingly takes a random of 100 accounts of the firm. Find probability

asked by Leo Elvis
135. English.

O Romeo, Romeo, wherefore art thou Romeo? Deny thy father and refuse thy name, Or if thou wilt not, be but sworn my love, And I’ll no longer be a Capulet. Can someone help me change this into a greeting card quote ?

136. Accounting

E13 Selected account balances of the Lakeside Grocery Store for the year ended December 31, 20xx, follow. Beginning merchandise inventory was \$ 26,000, and ending merchandise inventory is \$ 22,000. Prepare closing entries, assuming that the owner of

137. Statistics

A researcher predicts that watching a film on institutionalization will change students’ attitudes about chronically mentally ill patients. The researcher randomly selects 36 students, shows them the film, and gives them a questionnaire about their

138. Chemistry

How many oxygen atoms are in 6Al (SO4)3

asked by science wiz
139. ethic and social responsibility

Pluripotent stem cells are__________________ (Points : 1) those cells that have the potential to be used for multiple types of tissue. those cells that have potential to be used only for one type of tissue. those cells that are generally taken from adults.

140. Vectors

Determine the vector equation of a line passing through the point P(3,2,-1) and with a direction vector perpendicular to the line r=(2,-3,4)+s(1,1,-2), seR

141. Criminal Justice

I have to answer the following: Name and descrbe the four types of prisons I have no clue what the four types are and google isn't giving me the info I need, cane someone please help!!

142. engineering

1100 kg car accelerates from rest reaching distance of 139 m in 8.7 sec determine average power in KW your answer to 2 decimal places?

143. Economics

Please simplify. Thanks. Cecelia is an avid art collector who owns many original works of art. Recently, she decided to sell an oil painting by Norman Rockwell. The buyer paid \$500,000 for the painting. Since Cecelia had paid just \$350,000 for the

144. Statistics

The average SAT score for the 300 students accepted at Tiny College this year is 1,050 with a standard deviation of 275. If a random sample of 40 students is selected from this class, what is the probability that the average SAT score will be greater than

asked by Leo Elvis
145. Chemistry

I need definitions for chemistry and I can't come up with any heterogeneous reaction homogeneous reaction activation energy activation energy activated complex elementary reaction

146. Math

John has 4 cups filled with fruit juice.He said that he has a gallon of fruit juice.Is his statements reasonable?explain why or why not.

147. Physics

A motor cyclist travelling at 12m/s decelerate at 3m/s(squared)? How far does he travel while coming to rest?

asked by Shweta Chand
148. plysics

a yacht sails 50km north and then another 20km at an unknown angle .Using GPS£¬the skipper finds that bearing from their starting point is N20¡ãW. (1) What was the direction of the yacht for the 20km of itd journey? (2) In what direction and how far

149. english grammar, please corect my english grammare

darryl and shirly, invite you in a celebraion of marriage vows.

150. ethic and social responsibility

Pluripotent stem cells are__________________ (Points : 1) those cells that have the potential to be used for multiple types of tissue. those cells that have potential to be used only for one type of tissue. those cells that are generally taken from adults.

151. Trigonometric

tan^2 x − 7 tan x − 8 = 0 Use inverse functions where needed to find all solutions of the equation in the interval [0, 2π).

152. Trigonometry

16 sin^2 x = 16 − 8 cos x Find all solutions of the equation in the interval [0, 2π)

153. Math

Decide whether each statement is always true, sometimes true, or never true. a. a square is a rectangle b. a right triangle is an isosceles triangle c. an acute triangle is an isosceles triangle d. an isosceles triangle is a right triangle

154. physics

how can we derive the work-energy theorem form Newton's second law of motion?

155. Geometry

Prove that any altitude of a triangle must be less than the semiperimeter.

156. Math

On their vacation, the Li family traveled from their home to a resort in the mountains. The odometer in their car read 35286.9 miles when they started and 35514.2 miles when they returned home. What was the distance from their home to the resort?

157. math

write a word probelm that has more than one step in the solution

158. algebra

Find the sum: -15+4+(-10) 22+(-4)-15 Can you show me work too I think that'll help me understand better.

159. maths

Determine the stress in a solid steel rod of diameter 30 mm when subjected to a tensile load of 91 KN (your answer must be in MPa to 2 decimal places).

160. Literature

(Ethan Frome by Edith Wharton) discuss whartons use of short flashbacks. why are they placed where they are?

161. Kinematic

A motor cyclist travelling at 12m/s decelerate at3m/s(squared) how far does he travel while coming to rest?

asked by Shweta Chand
162. Constructed Responce Help

Hi can you see if this constructed responce makes sense, or if I need to clean it up or add anything to it. thanks! I needed to compare and contrast the two versions of "the great chicago fire" and also tell how the format of each passage allow the author

163. science

In which of the following statement the word light year is used correctly? (A) Ceres dwarf galaxy is 2.46 million lightyear away from us.(B) light travels with the speed of 1 lightyear in the universe (c) the next complete solar eclipse will be seen after

164. Constructed Responce Help

Hi, I was told I could re-do my CR and post it for checking. There are many ways to compare and contrast the two versions of the stories “The Chicago fire”. The first version differs from the second version in many ways. Some ways is that in the first

165. Math

The pet shop owner told Jean to fill her new fish tank 3/4 full with water. Jean filled it 9/12 full. What fraction of the tank does Jean still need to fill?

166. Math

A motorboat went 20 miles on 5/8 gallon of fuel. How far can the motorboat go on a gallon of fuel?

167. Math

Based on examples she has seen, a child might think that a trapezoid is" a shape with 4 sides, top and bottom are parallel, bottom longer than the top, no sides the same size, large, no right angles, cut off at the top." Which of these characteristics are

168. PHI208

Tom Regan’s view of animals is that (Points : 1)

169. Math

1. What is the value of z so that -9 and 9 are both solutions of x^2+z=103? a) -22 b) 3 c) 22 d) 184 2. What is the value of b in the triangle below? The triangle has one side that is 3b and another that is just b. The area of the triangle is 24in.^2. a)

170. algebra

Write out variable expression for the following. I. 15 more than a number II. 6 less than a number III. The product of a number m and 7 Its part of a review but I don't understand it.

171. Criminal Justice

in my previous question i asked what the four types of prisons were and forgot to add that i'm supposed to describe and name the four types of prisons for adults. Can someone help me find a good resource to start with please?

172. English

I need some help finding quotes with explanations of the quote for a greeting card. Can anyone list some quotes with the explanations?

173. algebra

What is the value of the expression below? |-4-5| - |7+3| Show work please or else I won't understand and confused :)

174. math

You receive a salary of \$400 each week plus 12.5% commission on all sales. In on week you sold \$2300 worth of merchandise. What is your total earnings for that week.

175. Calculus

Determine the slope of the tangent to the function f(x)=5e^x - 2e^(2x) at the point with x-coordinate x=1

176. math

the level of pool water goes from4.5 feet to 6 feet. what is the percent increase?

177. Chemisty

how many moles of hydrogen will be liberated from 200.0ml of 3.00M HCL reacting with an excess of magnesium?

178. maths

A man whose height is 5ft 8inches stands in an open square. If the length of his shadow is twice his height, determine the altitude of the sun?

179. Language Arts second grade

I had to make a complete sentence using, won't, turn and on. I could add any additional words. My sentence is ...The tv won't turn on mom and dad. My mom says that's not correct grammar?

180. Math

Q1.Plot three points with first coordinate equal to (-2.8) and join them.

181. Math

1. Explain the difference between (-3)^2 and -3^2. 2. Explain the difference between -23 subtracted from 17, and -23-17. I have no idea what to do I am so lost :(

182. MATH

DRIVING DOWN A 10% GRADE, THEN YOU DESCEND TO 20 FEET BELOW YOUR STARTING POINT. wHAT CONCEPT DOES THE GRADE RELATE TO?

183. English

1. Memorize all the sentences on the page. Raise your hand if you want to recite all the sentences here. 2. Memorize all the sentences on the page. Raise your hand if you want to talk about all the sentences here. 3. Memorize all the sentences on the page.

184. marketing research and method

Topic: Measure the various factors that influence consumption of fast food among uni. students

185. Math

Let AB be taken as unity, and let it be required to multiply BD by BC. I have only to join the points A and C, and draw DE parallel to CA; then BE is the product of BD and BC. Show that the length of BE is the product of the lengths BD and BC.

186. Health

Healthy pregnant and postpartum women should get at least ________ of moderate-intensity aerobic activity a week. A. 200 minutes B. 150 minutes C. 60 minutes D. 30 minutes I got D.

187. Sociology

Outline the main aspects of each of the structural functionalist (SF), conflict(C), symbolic interactionist (SI) and feminist (F) approach as explanations of the social world. So far I have for SF I have that it looks at the society as an organism that has

188. PHYSICS

find the heat of fusion of ice M copper calorimeter= 50 g M h20 200 g at 30 C M ice=20.45 at 0 C t2= 20C

189. math

The number of students receiving an a on the test was equal to 15% of the total number of students. What would the equation be? I have started it off : s=

190. Algebra help please

Let f(x) = x + 2 and g(x) = x2 Find ( g o f)(-5) A. -3 B. 9 C. 49 D. -10 B?

191. sciences

explain in your own word why is it acceptable to take displacements of the trolleys x1 and x2 as a measure of the velocities of the trolleys.

192. algebra

For the function f(x) = x2 - 12, find (f o f-1)(4) A. 0 B. 4 C. 6 D. 10 A

193. english grammar, please corect my english grammare

Invite you to share celebration of love as we exchange our marriage vows

194. english

my friends were tenants in a certain house with backrooms. what part of speech is the word "certain" in this sentence?

195. Chemistry

for a project i had to make cards with words and then an example of those words, and i've done almost all of them, but I have a few words I need examples for activation energy activation energy activated complex elementary reaction

196. Math

In this document... berkleyschools . org/NorthstarMedia/download/123084?token=OCaRojCyVwc%3D Is A the correct answer to question 70?

197. English

English - rfvv, Monday, March 16, 2015 at 11:17pm 1. I am good at playing the piano. 2. I am good at the piano. 3. I am good at playing basketball. 4. I am good at basketball. ================= Are they all grammatical?

198. math

The of a loading crew estimated that they could load 8 boxes in 20 minutes at this rate ,how many boxes could they load in one hour ?

199. Math

A person's heart may beat at 75 beats per minute. How many beats would that translate into a day?

200. math

Two towns P and Q are 400 km apart. A bus left for P and Q. It stopped at Q for one hour and then started the return to P. one hour after the departure of the bus from P, a trail also heading for Q left P. the trailer met the returning bus ¾ of the way

201. math

In the year 2003, the population of a certain district was 1.8 million. Thirty percent of the population was in the age group 15-40 years. In the same year, 120,000 people in the district the Voluntary Counseling and Testing (VCT) contra for an HIV test.

202. chemistry

I need an example of an elementary reaction to go with the definition An elementary reaction is a reaction in which reactants are converted to products in a single step.

203. Math

Can you draw a rectangle with a scale of 0.5cm:2ft? What would it look like?

204. Math 7th grade

Geraldo bought some computer software on layaway. He paid \$12 down and must make a payment of \$5 each week for 4 weeks. How much will Geraldo pay in all?

205. EES

Name a mineral or rock that has more than one element and how humans use it in everyday life

206. Math Problem

Mrs. Bond made a deposit of \$100 into her checking account. Then she wrote checks for \$97.54 and \$48.27. If her previous balance was \$320.39, what is her new balance? - I also need help with Mika bought two copies of the same book and a tape priced at

207. Math

Samuel, Thea, Ling, Jose, and Mark all want to go on the trip. How many different combinations are possible for the remaining 4 spots?

asked by DESPERATE FOR HELP
208. English

I'm not seeing any of what the teacher is asking? can someone help Directions: Place all prepositional phrases in parentheses. Underline the subject or subjects once and DOUBLE underline or bold face the verb or verbs 1. Sandy’s revealing suit attracted

asked by John lee

A marketing class is engaged in a project to estimate the proportion of homes receiving both HBO and Showtime cable service. The class plans to use a confidence coefficient of 0.95 and a maximum error of the estimate equal to 0.10. Determine the sample

asked by Leo Elvis
210. 3 rd grade Math

If the hexagon represents one whole, what fractions do the trapezoid, the parallelogram, and the triangle represent? explain how you found your answers. can anybody please explain this how to tell to my son.

211. health

If you are overweight or obese, getting active can help you lower your risk of?

212. science

you are given a 1kg trolley and a trolley of unknown mass.explain how the mass of unknown . Explain how the mass of the known trolley can be determined if a mass-meter scale is not available

213. sciences

what is the total linear momentum of the trolleys (before the spring is released)

214. Math

Look around the classroom. What polygons and polygon regions to you see?

215. Math

Decide whether each statement is always true, sometimes true, or never true.

216. Math

Is a shape congruent to itself? Explain you answer.

217. Math

Which of the five types of regular polyhedra is your favorite. Why?

218. Math

Solve -11>t + 7

219. Math

I'm so confused. 3=6.2*y

220. Math

6 children ate 3 pizzas each.how many pieces did they eat altogether in fraction

221. math

How do I write one equations in slope-intercept form, and three other lines in slope-intercept form that are perpendicular to the first line ?? -- one line: y=mx+b second line perpendicular y= -x/m + c of course, you have to know m, b, c. ----- for the

222. Geology

Rank the following three types of sedimentary rocks in terms of rate of sedimentation from highest (1) to lowest (3) by assigning numbers 1 to 3 to the following: A) Limestone B) Chert C) Sandstone