Vanessa

Most popular questions and responses by Vanessa
1. English

Write a debate on the topic;Boys should not help in the kitchen.Speak for or against the motion.

asked on August 14, 2012
2. Math

The College Board reported the following mean scores for the three parts of the Scholastic Aptitude Test (SAT) (The World Almanac, 2009): Assume that the population standard deviation on each part of the test is = 100. a. What is the probability a sample

asked on April 16, 2014
3. statistics (10)

Annual starting salaries for college graduates with degrees in business administration are generally expected to be between \$30,000 and \$45,000. Assume that a 95% confidence interval estimate of the population mean annual starting salary is desired. What

asked on April 23, 2014
4. statistics

A simple random sample of 40 items resulted in a sample mean of 25. The population standard deviation is 5. a. What is the standard error of the mean (to 2 decimals)? b. At 95% confidence, what is the margin of error (to 2 decimals)?

asked on April 21, 2014
5. statistics

Suppose a random sample of size 50 is selected from a population with σ = 10. Find the value of the standard error of the mean in each of the following cases (use the finite population correction factor if appropriate). a. The population size is infinite

asked on April 15, 2014
6. science

2. Describe the two most important events in the history of animal life that occurred at the beginning and at the end of the Paleozoic era. List and briefly outline the six different periods into which the Paleozoic era is divided. so i cannot find it in

asked on December 19, 2013
7. Geometry

Which statement is true? A. All squares are rectangles. B. All quadrilaterals are rectangles. C. All parallelograms are rectangles. D. All rectangles are squares. I thought it was B.

asked on August 11, 2014
8. phys science

1. speed is the ratio of the distance an object moves to a. the amount of time needed to travel the distance** b. the direction the object moves c. the displacement of an object d. the motion of the object 2. a car traveled 60 km in 2 hours, 84 km in the

asked on January 9, 2018
9. Chemistry

Naturally occurring cobalt consists of only one isotope, 59Co, whose relative atomic mass is 58.9332. A synthetic radioactive isotope of cobalt, 60Co, relative atomic mass 59.9338, is used in radiation therapy for cancer. A 1.8276g sample of cobalt has an

asked on September 3, 2014
10. Chemistry

Copper is composed of two naturally occurring isotopes: Cu−63 (69.170%) and Cu−65. The ratio of the masses of the two isotopes is 1.0318.

asked on September 3, 2014
11. Technology

In Which of the following ways can you use test taking tips help you ? You can focus on the information that you need to study •• You will see the answers to the test You will study more You will be less organized Correct me if I'm wrong

asked on February 2, 2016
12. Math

Phosphorus-32 (P-32) has a half-life of 14.2 days. If 200 g of this substance are present initially, find the amount Q(t) present after t days. (Round your growth constant to four decimal places.) How fast is the P-32 decaying when t = 21.5? (Round your

asked on April 6, 2014
13. science

Describe how the Triassic period was a transitional time period during the Mesozoic era. Explain why the boundary between the Triassic and Jurassic periods is similar to the boundary between the Permian and Triassic periods.

asked on December 19, 2013
14. Statistics Emergency please

People end up tossing 12% of what they buy at the grocery store (Reader's Digest, March 2009). Assume this is the true population proportion and that you plan to take a sample survey of 540 grocery shoppers to further investigate their behavior. a)What is

asked on April 17, 2014
15. Art

Which of these is the best definition of freedom of expression? A. expression that doesn't cost anything to have or share B. Uncensored speech,Art, or other means of communication •• C. Wild, uncontrolled expression of ideas D. Information and ideas

asked on February 4, 2016
16. Language

which of the following answer choices contains a metaphor a.his skin was sandpaper •• b. the sun sparked like a diamond c.she wanted to be like the birds and fly away d. they felt free when they ran Correct me

asked on February 1, 2016
17. English

In three to five sentences, explain how Ambrose Bierce's use of foreshadowing or flashback influences "An Occurrence at Owl Creek Bridge."

asked on December 20, 2014
18. Language

Frogs burrow the mud snails bury themselves and I air my quilts preparing for the cold Dogs grow more hair mothers make oatmeal and little boys and girls take Father John's Medicine Bears store fat chipmunks gather nuts and I collect books For the coming

asked on February 3, 2016

The Wall Street Journal reported that automobile crashes cost the United States \$162 billion annually (The Wall Street Journal, March 5, 2008). The average cost per person for crashes in the Tampa, Florida, area was reported to be \$1599. Suppose this

asked on April 22, 2014
20. calculus

A particle is moving along the x- axis so that its velocity at any time t ≥0 is give by v(t) = (2 pi - 5)t - sin(pi t) A. Find the acceleration at ay time t. B. Find the minimum acceleration of the particle over the interval [0,3]. C. Find the maximum

asked on January 4, 2013
21. Statistics 2

In Hamilton County, Ohio the mean number of days needed to sell a home is 86 days (Cincinnati Multiple Listing Service, April, 2012). Data for the sale of 40 homes in a nearby county showed a sample mean of 80 days with a sample standard deviation of 20

asked on September 24, 2014
22. Math

The growth rate of Escherichia coli, a common bacterium found in the human intestine, is proportional to its size. Under ideal laboratory conditions, when this bacterium is grown in a nutrient broth medium, the number of cells in a culture doubles

asked on April 6, 2014
23. financ

All techniques with NPV profile- mutually exclusive projects. Projects A and B, of equal risk. Are alternatives for expanding Rosa Company’s capacity. The firm’s cost of capital is 13%. The cash flows for each project are shown in the following table.

asked on January 4, 2012
24. math

an adult whale weighs 120 tons. a baby blue whale weighs 1/40 of the weight of the adult blue whale. how many pounds does the baby blue whle weigh?

asked on March 17, 2013
25. Math

A radioactive substance decays according to the formula Q(t) = Q0e−kt where Q(t) denotes the amount of the substance present at time t (measured in years), Q0 denotes the amount of the substance present initially, and k (a positive constant) is the decay

asked on April 6, 2014
26. Math

Skeletal remains had lost 84% of the C-14 they originally contained. Determine the approximate age of the bones. (Assume the half life of carbon-14 is 5730 years. Round your answer to the nearest whole number.)

asked on April 5, 2014
27. Physics

A box rests on a rough board 10.0meters long. When one end of the board is slowly raised to a height of 6.0meters above the other end, the box begins to slide. 1. What is the coeﬃcient of static friction? 2. Once you have claculated the coeﬃcient of

asked on February 28, 2018

Given that z is a standard normal random variable, compute the following probabilities (to 4 decimals). c. P(z -1.5) d. P(z -2.5)

asked on April 8, 2014
29. Chemistry

mass of empty flask with stopper = 32.634 g mass of flask with water and stopper = 59.479 g density of the water = 0.9973 g/cm^3 mass of water = 26.845 g volume of water = 26.918 cm^3 the flask is then emptied and an unknown substance is added mass of

asked on October 16, 2007
30. Math

Which statements are always true about regular polygons? Select all that apply. All sides are congruent •• Pairs of sides are parallel All angles are congruent •• All angles measure 90 degree Correct me if I'm wrong!!

asked on February 5, 2016
31. Math

Based on a preliminary report by a geological survey team, it is estimated that a newly discovered oil field can be expected to produce oil at the rate of R(t) = 300t^2/(t^3 + 32)+5 (0 ≤ t ≤ 20) thousand barrels/year, t years after production begins.

asked on April 14, 2014
32. Calculus

A population of 500 E. coli bacteria doubles every 15 minutes. Use this information to find an expression for this population growth. Using this expression, find what the population would be in 87 minutes. Use an exponential model. so we're supposed to use

asked on July 14, 2008
33. history

which describes the most accurate reason why oil wealth affects the stability of the middle east? a. wealthier middle eastern countries are able to use their oil profits to fund armies for self-defense. b. middle eastern nations with unlimited oil/fuel

asked on July 11, 2019
34. statistics

Assume a binomial probability distribution has p = .60 and n = 200. c. What is the probability of 100 to 110 successes (to 4 decimals)? d. What is the probability of 130 or more successes (to 4 decimals)?

asked on April 6, 2014
35. Math

a rug in the shape of a regular quadrilateral has a side length of 20ft what is the perimeter of the rug? 4ft 5ft•• 40ft 80ft Correct me if I'm wrong!!

asked on February 5, 2016
36. Math

What value of x will make the equation below true? 2x-6=3x+1-x-7

asked on August 15, 2016
37. multiplied

when 2.49 is multiplied by 0.17, the result rounded to 2 decimal places is? a 0.04 b 0.42 c 4.23 d .423 e .40

asked on April 10, 2013
38. CHEM 2

A 23.0% by mass LiCl solution is prepared in water. What is the mole fraction of the water?

asked on May 10, 2016
39. Physics

A 5.0-kg rock and a 3.8 10-4-kg pebble are held near the surface of the earth. (a) Determine the magnitude of the gravitational force exerted on each by the earth.

asked on February 22, 2018
40. Accounting 7

Job 31 has a direct materials cost of \$300 and a total manufacturing cost of \$900. Overhead is applied to jobs at a rate of 200 percent of direct labor cost. Use the relationships among total manufacturing costs, conversion cost, and prime cost to

asked on September 9, 2014
41. calculus

consider g(x)= {a sin x + b, if x ≤ 2pi} {x^2 - pi x + 2, if x > 2pi} A. Find the values of a a b such that g(x) is a differentiable function. B. Write the equation of the tangent line to g(x) at x = 2pi. C. Use the tangent line equation from part B to

asked on January 4, 2013
42. Language

which category best describes the following sentence? Can kangaroos walk on all four legs? A) declarative B) Interrogative •• C)imperative D)exclamatory Correct me if I'm wrong!!

asked on February 3, 2016
43. Art

was marcel duchamp's reaction to the public outcry against his work nude descending a staircase (No.2)? Duchamp was crushed; he wanted to be accepted by the public Duchamp simply ignored the controversy and created more Art Duchamp was delighted; even

asked on February 5, 2016
44. statistics

How large a sample should be selected to provide a 95% confidence interval with a margin of error of 10 (to the nearest whole number)? Assume that the population standard deviation is 40.

asked on April 21, 2014
45. physics

a bowling ball has a mass of 8kg. if it rolls down the alley, without slipping, at 7m/s, calculate a) the linear kinetic energy, b) the rotaional kinetic energy, c) the total kinetic engergy

asked on January 12, 2011
46. math

A samll bar of gold measures 40 mm by 25 mm by 2 mm. One cubic millimeter of gold weighs about 0.0005 ounce. Find the volume in cubic millimeters and the weight in ounces of this small bar of gold. Thank you!

asked on April 28, 2015
47. physics

a driver in a car traveling at a speed of 21.8 m/s sees a cat 101m away on the road. How long will it take for the car to accelarate uniformly to a stop in exactly 99m?

asked on September 23, 2010
48. Chemistry

Methane (CH4) behaves as an ideal gas under standard temperature and pressure conditions. What volume is occupied by 1 kg of methane at a temperature of 35 °C and a pressure of 0.9 atm?

asked on May 22, 2017
49. chemistry

Consider the reaction HCl + NaOH ->NaCl + H2O Given: HCl Solution: 22 degrees celsius NaOH Solution: 22 degrees celsius Final Temperature: 26.1 degrees celsius A. Calculate the amount of heat evolved when 15 mL of 1.0 M HCl was mixed with 35 mL of 1.0 M

asked on March 28, 2011
50. Science

Which statement about subatomic particles is NOT true? A.) Protons and neutrons have almost the same mass. B.) Protons and electrons have opposite charges. C.) Unlike protons and electrons, neutrons have no charge. D.) Protons and neutrons have the same

asked on December 18, 2011
51. Algebra

A total of 556 tickets were sold for the school play. They were either adult tickets or student tickets. There were 56 more student tickets sold than adult tickets. How many adult tickets were sold?

asked on September 4, 2017
52. ELA

What are the differences and similarities between Sal And Phoebe???

asked on October 18, 2016
53. Chemistry

Calculate the mass of H2O produced by the decomposition of 2.21g of CuCO3 x Cu (OH)2. What happend to this water? This question is incredibly important and I am stuck on it, thank you very much for your help

asked on April 6, 2011
54. statistics 2

In Hamilton County, Ohio the mean number of days needed to sell a home is 86 days (Cincinnati Multiple Listing Service, April, 2012). Data for the sale of 40 homes in a nearby county showed a sample mean of 80 days with a sample standard deviation of 20

asked on September 24, 2014
55. Statistics

Based on data collected by the National Center for Health Statistics and made available to the public in the Sample Adult database (A-5), an estimate of the percentage of adults who have at some point in their life been told they have hypertension is 23.53

asked on March 15, 2017
56. Chemistry

rank the compounds below in order of increasing vapor pressure at 298 K? A) c3h6 B) c4h8 C) c5h10

asked on December 12, 2016
57. statistics

Given that z is a standard normal random variable, compute the following probabilities (to 4 decimals). P(z -1.0) P(z -1.0) P(z -1.5) P(z -2.5) P(-3 < z 0)

asked on April 5, 2014
58. Language

which statement describes the translation form of a haiku poem? A. A three line poem with seven syllables in the first and third lines and five syllables in the middle line.•• B. A nine line poem with five syllable in odd numbered lines and seven

asked on February 1, 2016
59. statistics

For a t distribution with 16 degrees of freedom, find the area, or probability, in each region. a. To the right of 2.120. (Use 3 decimals.) b. To the left of 1.337. (Use 2 decimals.) c. To the left of -1.746. (Use 2 decimals.) d. To the right of 2.583.

asked on April 21, 2014
60. Economics 6

Annual per capita consumption of milk is 21.6 gallons (Statistical Abstract of the United States: 2006). Being from the Midwest, you believe milk consumption is higher there and wish to support your opinion. A sample of 16 individuals from the mid western

asked on September 9, 2014
61. Language

read the following lines from the poem " The Destruction of sennacherib" by lord byron The Assyr come down like a wolf on the fold, and his cohorts were gleaming in purple and gold. And the sheen of their spears was like stars on the sea, When the blue

asked on January 28, 2016
62. Physics

A ball is shot vertically upward from the surface of another planet. A plot of y versus t for the ball is shown in the figure below, where y is the height of the ball above its starting point and t = 0 at the instance the ball is shot. The figure’s

asked on October 2, 2007
63. chem

a pipet delivers 9.04,9.02,9.08,9.06 ml in consecutive trials.find the mean volume and the average deviation from the mean

asked on July 16, 2012
64. statistics

The International Air Transport Association surveys business travelers to develop quality ratings for transatlantic gateway airports. The maximum possible rating is 10. Suppose a simple random sample of 50 business travelers is selected and each traveler

asked on April 21, 2014
65. CHEMISTRY

Hello, I am having trouble balancing this redox reaction WITHOUT using the half-reaction method. I believe this is because not all of the elements are in (aq). BrO3-(aq) + N2H4(g) --> Br-(aq) + N2(g) Br is reduced by a factor of 6. N is oxidized by a

asked on April 21, 2010
66. Math

Carlota Music Company estimates that the marginal cost of manufacturing its Professional Services guitars in dollars/month by the following. This model assumes that the level of production is x guitars/month. C '(x) = 0.007x + 130 The fixed costs incurred

asked on April 9, 2014
67. Math

The average student enrolled in the 20-wk Court Reporting I course at the American Institute of Court Reporting progresses according to the rule below where 0 t 20, and N'(t) measures the rate of change in the number of words/minute dictation the student

asked on April 9, 2014
68. Spanish

CHECK? ANswers on bottom: A. Choose the correct preterite tense conjugation. t� (dar) das dabas diste B. Choose the correct imperfect tense conjugation. las gatas (ir) iban van fueron C. Choose the correct preterite tense conjugation. Juan (dormir)

asked on December 17, 2012
69. Math

A radioactive substance decays according to the formula Q(t) = Q0e−kt where Q(t) denotes the amount of the substance present at time t (measured in years), Q0 denotes the amount of the substance present initially, and k (a positive constant) is the decay

asked on April 5, 2014
70. Math

The students in a class of 24 share 48 apple slices and 36 orange slices equally among them. How many pieces of fruit did each student get?

asked on December 12, 2016
71. statistics

The American Association of Individual Investors (AAII) polls its subscribers on a weekly basis to determine the number who are bullish, bearish, or neutral on the short-term prospects for the stock market. Their findings for the week ending March 2, 2006,

asked on April 15, 2014
72. Statistics 7

Home values tend to increase over time under normal conditions, but the recession of 2008 and 2009 has reportedly caused the sales price of existing homes to fall nationwide (BusinessWeek, March 9, 2009). You would like to see if the data support this

asked on September 24, 2014
73. Science

Table salt has the chemical formula NaCl. Table sugar has the chemical formula C12H22O11. Which of the following is true? (1 point) Both compounds are held together by chemical bonds. Both compounds have the same density. Both compounds react with water.

asked on January 28, 2016
74. algebra 2

Find two geometric means between 7 and 875

asked on April 2, 2012
75. Math

which statement is a true statement? All rectangles are squares All squares are rectangular •• Every rhombus is a rectangle Every rectangle is a rhombus Correct me if I'm wrong!!

asked on February 5, 2016
76. Science

Plz correct me!! A student combined water, sugar, and salt in a beaker. Which of the following statements is true? (1 point) The individual substances can be separated by physical means. The individual substances cannot be separated by physical means.* A

asked on January 28, 2016
77. statistics

Collina’s Italian Café in Houston, Texas, advertises that carryout orders take about 25 minutes (Collina’s website, February 27, 2008). Assume that the time required for a carryout order to be ready for customer pickup has an exponential distribution

asked on April 9, 2014
78. *math (4)

The demand function for a certain brand of CD is given by p = −0.01x^2 − 0.2x + 12 where p is the unit price in dollars and x is the quantity demanded each week, measured in units of a thousand. The supply function is given by p = 0.01x^2 + 0.5x + 3

asked on April 23, 2014
79. statistics

Suppose a random sample of size 50 is selected from a population with σ = 10. Find the value of the standard error of the mean in each of the following cases (use the finite population correction factor if appropriate). a. The population size is infinite

asked on April 14, 2014
80. Language Arts

Compare and Contrast Limerick and The Sidewalk Racer PLEASE HELP ME!!!

asked on February 25, 2016
81. math

The capacity of a 1cm cube is 1mL. How many 1cm ice cubes would you need ti melt to fill a 1.5L jar?

asked on April 20, 2010
82. physical science

objects in free fall near the surface of earth experience a. constant speed b. constant velocity c. constant acceleration d. constant distance

asked on January 10, 2018
83. history

which discuss the steps in the process that led to the social and political changes in south africa? (select all that apply.) a. social justice crusader nelson mandela was jailed for his activism, yet he saw the end of apartheid and the dawn of nonracial

asked on July 12, 2019
84. chemistry

calculate the theoretical weight of sodium borohydride need to reduce 50 mg of benzil

asked on February 16, 2012
85. Math

Quadrilateral PQRS has vertices P(0,6), Q(-6,-2), R(2,-4), and S(4,2). Verify that the quadrilateral formed by joining the midpoints of the sides of PQRS is a parallelogram.

asked on October 19, 2012
86. physics

a dog sits 1.34m from the center of a merrygo round with an angular speed of 1.26rad/s. if the magnitude of the force that maintains the dog's circular motion is 43.8N, what is the dog's mass? answer in units of kg?

asked on November 20, 2010
87. !math (4)

The demand function for a certain brand of CD is given by p = −0.01x^2 − 0.2x + 12 where p is the unit price in dollars and x is the quantity demanded each week, measured in units of a thousand. The supply function is given by p = 0.01x^2 + 0.5x + 3

asked on April 24, 2014
88. Math

-18x + 5x= -12x -1 i am getting 14 but that is not correct

asked on November 23, 2011
89. Math

The percentage of a certain brand of computer chips that will fail after t years of use is estimated to be P(t) = 100(1 − e−0.12t ). What percentage of this brand of computer chips are expected to be usable after 3 years? (Round your answer to one

asked on April 7, 2014
90. Science

2. (a) After the parcel of air has descended down the lee side of the mountain to sea level, what is the temperature of the parcel? (b) Why is the parcel now warmer than it was at sea level on the windward side (what is the source of the heat energy)? 3.

asked on November 25, 2011
91. Algebra

Bracelets You are making beaded bracelets for your friends. You want to use 30 beads for each bracelet and want to use no more than 145 beads. Write an inequality that models this situation. Can you make 4 bracelets?

asked on March 6, 2011
92. CHEMISTRY HELP PLEASE!!!

The solubility of AgCl(s) in water at 25 C is 1.33x10^-5 M and its delta H of solution is 65.7 kJ/mol . What is its solubility at 60.1 C ?

asked on March 23, 2013
93. probability

In a shipment of 11 CD players, two are defective. Find the probability that a sample of 3 CD players will contain no more than one defective one.

asked on June 18, 2011
94. Grade 10 Math

The Brooklyn Bridge in New York City is a suspension bridge that crosses the East River and connects Brooklyn to the island of Manhattan. If the origin is placed at the top of one of the cable suport towers, as shown, the shape of a cable that supports the

asked on February 3, 2013
95. Physics

A woman stands on a scale in a moving elevator. Her mass is 60.0 kg, and the combined mass of the elevator and scale is an additional 815 kg. Starting from rest, the elevator accelerates upward. During the acceleration, the hoisting cable applies a force

asked on February 17, 2018
96. Math

A is the midpoint of CT. CA= 3x+6 and CT= 24, find x

asked on September 15, 2016
97. statistics

Assume a binomial probability distribution has p = .60 and n = 200. a)What are the mean and standard deviation (to 2 decimals)? b)Why can the normal probability distribution be used to approximate this binomial distribution? c)What is the probability of

asked on April 5, 2014
98. Art

What was marcel duchamp's reaction to the public outcry against his work nude descending a staircase (No.2)? Duchamp was crushed; he wanted to be accepted by the public Duchamp simply ignored the controversy and created more Art Duchamp was delighted; even

asked on February 4, 2016
99. Art

Are willow strips waterproof? Yes Correct me if I'm wrong

asked on February 1, 2016
100. Math

The length (in centimeters) of a typical Pacific halibut t years old is approximately f(t) = 190(1 − 0.955e−0.25t). (b) How fast is the length of a typical 9-year-old Pacific halibut increasing? cm/yr (c) What is the maximum length a typical Pacific

asked on April 7, 2014