Sunday
August 2, 2015

Posts by christine


Total # Posts: 483

statistics
Using teh 68-95-99.7rule. Assume that a set of test scores is normally distributed with a mean of 100 and a standard deviation of 20. Use the 68-95-99.7 rule to find the following quantities: a. percentage of scores less than 100 b. relative frequency of scores less than 120 c...
May 10, 2010

statistics
Which of the following statements are correct? a. a normal distribution is any distribution that is not unusual b. the graph of a normal distribution is bell-shaped c. if a population has a normal distribution, the mean and the median are not equal d. the graph of a normal ...
May 10, 2010

math
Electrical system are governed by Ohm's law, which states that V = IR, where V=voltate, I=current, and R=resistance. If the current in an electrical system is decreasing at a rate of 9 A/s while the voltage remains constant at 14 V, at what rate is the resistance ...
May 2, 2010

Calculus
Find the derivative of (sin(^3)x)(tan x) Please explain to me in steps please , thank you
April 19, 2010

English
how peple come from
April 9, 2010

English
hi how are you
April 9, 2010

Chem
delta h is 2800
April 7, 2010

Math7
Find the cost of the following situation. Dress Sale: Regular:$160 Now:$112 What % is given on the price of the dress?
March 18, 2010

math
The basketball coach wants to know the perimeter of the court. The area of the court is 4700 feet2. What is the perimeter? The long side of the court is 94 feet.
March 18, 2010

Physics
A bullet with mass 0.40 kg is fired with an initial velocity of 400 m/s from a gun with mass 5.0 kg. The speed of the recoil of the gun is?
February 27, 2010

managerial finance
Find the current value per share of Suarez Manufacturing’s common stock.
February 23, 2010

Eth125
I just wanted to know if anyone has a course syllabus for this class. I start this class very soon and I would like to get a head start. Thank you so much.
February 19, 2010

soc 300
Explain the Modernization and Dependency theories as they relate to underdevelopment. What are the major contributions of each theory and what are the greatest weaknesses? Explain which theory of underdevelopment has greater empirical support, particularly statistical support...
January 16, 2010

algebra
Distributive, Associative, or neither? 3(bz)=(3b)z
January 14, 2010

physics
When a horizontal force of 7N acts on a block on a resistance free surface, it produces an acceleration of 3.5m/s^2. suppose a second 4kg block is dropped onto the first. what is the magnitude of the acceleration of the combination if the same force continues to act? Assume ...
December 7, 2009

Physics
Problem:: A 4.80 kg block located on a horizontal frictionless floor is pulled by a cord that exerts a force F=13.5 N at an angle q= 17.5° above the horizontal. What is the speed of the block 3.90 seconds after it starts moving? What I've got:: Using sin and cos, I'...
November 20, 2009

geometry
a right trapezoid
November 11, 2009

4th grade
need help with edhelperku puzzle
November 4, 2009

college
The clarke family went sailing on a lske . thier boat averages 6 kilometers per hour
November 4, 2009

physics
A 70.0 kg climber is supported in the "chimney" by the friction forces exerted on his shoes and back. The static coefficients of friction between his shoes and the wall, and between his back and the wall, are 0.760 and 0.610, respectively. What is the minimum normal ...
October 26, 2009

Skills for Learning in an Information Age
What are some ways in which you may make use of Web-based information and guard against plagiarism?
October 15, 2009

psychology 11
ya i think d. too.
September 10, 2009

English
Your Welcome!
September 10, 2009

English
Humerus I think is a bone and humorous is funny.
September 10, 2009

English
I would say #2 because it sounds better.
September 9, 2009

English
#1 is grammatically corect I think it sounds better. In #4 They will make you get better grades. The correct way to say that is They will help you get better grades. In #5 From your friends you can get help. The correct way to say that is You can get help from your friends.
September 9, 2009

7th grade
What is the definition of the word "hamebells" from the book "The Red Pony" by Steinbeck. I have searched all dictionary sources I could and can't seem to find out anythin on it. Is it, perhaps, a slang word for something else?
September 9, 2009

algebra
Do this problem one step at a time. Parenthesis's first, then multiplecation and division, next then adding and subtracting. Think of P.E.M.D.A.S.
September 9, 2009

Chemistry
student perform 2 melting point determinations on a crystalline product. In one determination, the tube contained a sample 1 - 2 mm in height, and the melting point was 141 - 142 ¢ªC. In the second determination, the sample hight was 4 - 5 mm and the melting range ...
September 1, 2009

Chemistry
Student in O-Chem Lab conducts a melting point experiment with an unknown compound and observes a melting range of 210 – 218C. Is this a typical range for a melting point? If not, what range would be typical? For this question, does it mean an unknown compound in general...
August 30, 2009

O-Chem
Yea my prof was not very clear or did not clarify what hot water would be. Thanks for the help.
August 29, 2009

O-Chem
Then the minimum volume of hot water then is 2.70mL
August 29, 2009

O-Chem
Find the minimum volume of hot water needed to dissolve 100 mg of salicylic acid. Can someone help me how to start this out? I would greatly appreciate it. The data is [temp] [amount of salicylic acid per 100 ml water, g] 0 0.10 10 0.13 25 0.23 50 0.63 75 1.8 90 3.7
August 29, 2009

integration
please help emergency. find double integral of x times y time e to the <x plus y> . bounded from <0,1> x <0,1>
August 21, 2009

Math
Can someone please check my answers below for accurateness? The instructions are: Differentiate and simplify. 1) y=(2x^2+3x-1)(3x^2-5x-3) y'=(4x+3)(3x^2-5x-3)+(2x^2+3x-1)(6x-5) 2) y=(5x^2+3x-1)(3x^2-5x-3) y'=(10x+3)(4x^2-3)+(5x^2+3x-1)(8x) 3)y=6x^3-7x^2+5x-7+x^(5/3)-7...
August 7, 2009

Math
a) determine the equation of the line that is perpendicular to the tangent to y=5x^2 at (1,5). b) determine the equation of the line that passes through (2,2) and is parallel to the line tangent to y=-3x^3-2x at (-1,5).
August 2, 2009

Health
AIDS/HIV funding and Research
July 28, 2009

English
his melancholy state of mind or his melancholy state-of-mind
July 4, 2009

English
what about post-death
July 3, 2009

English
loved-one or loved one
July 3, 2009

English
so age-group or no ?
July 3, 2009

English
Occur age group after age group and repeat time after time Should there by any dashes or hyphens here? should it be like: occur age-group after age-group and repeat time-after-time ???
July 3, 2009

algebra 2
x-1/x^2-x-20 Give the equivalent numerator if the denominator is (x - 5)(x + 4)(x + 3).
June 13, 2009

Math
A) A rectangle has perimeter 64 cm and area 23 cm^2. Solve the following system of equations to find the rectangle's dimensions. length=23/width length + width = 32 B) Solve the system of equations x^2+y^2=1 xy=0.5
June 7, 2009

Math
The dimensions of a gift box are consecutive positive integers such that the height is the least integer and the length is the greatest integer. If the height is increased by 1 cm, the width is increased by 2 cm, and the length is increased by 3 cm, then a larger box is ...
June 7, 2009

Math
I just have a quick question regarding this question: Simplify. State any restrictions on the variables. log(x^2+7x+12)-log(x^2-9) my answer is log[(x+4)/(x-3)] which is correct. However, for the restrictions, I believe that they are: x>3 and x<-4.. But the back of the ...
June 6, 2009

pre-calc
How bright a star appears can depend on how much light the star actually emits and how far away it is. The stellar magnitude scale can be adjusted to account for distance as follows: m_2 - m_1 = log (b_1/b_2) Here, M refers to a star's absolute magnitude, that is, how ...
May 16, 2009

Advance Math
The path around a square flower bed is 3 feet wide. If the area of the flower bed is equal to the area of the path, find the dimensions of the flower bed.
February 18, 2009

government
in a political party, what is the job of precinct captain?
February 5, 2009

government
the trying of impeachments is done by who?
February 5, 2009

government
who solves the disputes over issues in congress? the correspondence committe, the committee of conference, or the core committee.
February 5, 2009

Science
What are ten scientific facts found in Jurassic park? Include page numbers for reference.
January 9, 2009

business
what are the consequences if payroll information is not entered precisely?
December 8, 2008

uite rate
unit rate of 250 miles in 4hrs
December 4, 2008

s.s
Did the Constitution resolve the weaknesses in the Articles of Confederation?
December 4, 2008

s.s
What was the debate between North and South over counting slave populations?
December 4, 2008

college chemistry
How much heat is needed to melt 50.0g of ice at 0 degree celcius and then heat the water to 25 degree celcius?
November 2, 2008

physics!
vf2=v02+2ax then solve for vf the vf would then be used as v0 for the 2nd half of the projectile. then you use the same equation to solve for vf.
October 19, 2008

algebra, equations
y=mx+b slope is m y intercept is b so in this problem the slope is -2/3 the y intercept is -12
October 19, 2008

phys
A long distance swimmer is able to swim through still water at 4km/hr. She wishes to swim from Port Angeles, WA due north to Victoria, B.C., a distance of 50km. An ocean current flows through the Strait of Juan de Fuca from west to east at 3km/hr. In what direction should she ...
October 19, 2008

Federal court system
The role of the federal court system is to?
October 6, 2008

world history
I am a 10th grader and I need to know how to write an essay for world history. I don't get it. Could you email me a sample essay so that I know where things go, such as conclusion, etc.
September 25, 2008

chemistry
How much heat in kilojoules is required to warm 10.0 of ice, initially at -10.0, to steam at 120. The heat capacity of ice is 2.09 and that of steam is 1.84 .
September 7, 2008

Ethnic Diversity
I'm very confused with this question and check point•According to current (within the past two years) research and news reports, what are some of the changes the United States has made to policies concerning the treatment of Muslim and Arabic members of society?
September 2, 2008

Ethnic Diversity
I'm very confused with this question and check point
September 2, 2008

reading
Why isnt an ant suture not a good idea?
August 20, 2008

Statistics
Does the null hypothesis for a nondirectional alternative hypothesis differ from the null hypothesis for a directional alternative hypothesis? Explain. I have no idea how to state the answer for this.
May 24, 2008

Nursing education
I disagree with you bob, many Master's prepared nurses make less money than those who have ADN's. Since I am an ADN nurse who is now one class short of a BSN, I think I know who makes the most money. If you are a hospital nurse with good differentials and base pay ...
May 20, 2008

Stats
Thanks, I think that is very good. I will add that to my answer.
May 20, 2008

Stats
Why is it important to know the possible errors we might make when rejecting or failing to reject the null hypothesis?
May 20, 2008

health care
A doctor needs to sit down, ask open ended questions (not ones that can be answered with a yes or a no) spend enough time with the patient to allow him/her to ask questions and often times it is best to have the patient repeat back the instructions so as to assess the ...
May 20, 2008

how to write a check
No need to write the word "dollars" as it is usually on the check already.
May 19, 2008

chemistry homework
In the preparation of sulfuric acid, sulfur dioxide must be catalytically oxidized to sulfur trioxide. How much oxygen must be available to convert 50.0 L of sulfur dioxide according to this process?
May 15, 2008

Statistics
A student is taking a multiple-choice exam with 16 questions. Each question has five alternatives. If the student guesses on 12 of the questions, what is the probability she will guess at least 8 correct? Assume all of the alternatives are equally likely for each question on ...
May 14, 2008

general question
Ok this is probably a stupid question but a hospital pharmacist works at a hospital right?
May 13, 2008

HIPPA
To answer why, it is used to protect consumers from others obtaining information that is not for public information.
May 12, 2008

statistics--clarification please
I thought I was understanding this but I am really not sure about the symbols. Does the 3*(13/20)^2*(7/20) translate to 3 times 13/20 times 2 times 7/20? Sorry I am not up on the symbols... I will keep trying.
May 11, 2008

statistics
That is even more confusing. I am totally lost on this problem. I know that I have to multiply the three possibilities, so (7/20)(7/20)(13/20) three times (same numbers, different order) and I get 0.07963. I thought I would add those three numbers or essentially multiply that ...
May 11, 2008

statistics
I thought I was understanding this but I am really not sure about the symbols. Does the 3*(13/20)^2*(7/20) translate to 3 times 13/20 times 2 times 7/20? Sorry I am not up on the symbols... I will keep trying.
May 11, 2008

statistics
you have 8 blue marbles, 7 red marbles, and 5 green marbles. What is the probability of obtaining at least 2 red marbles in three draws with replacements? I have the answer, just can't figure out how to get it. Thanks!
May 11, 2008

calculus
solve the following differential equation: y' + (y)tanh(x) - 2e^x = 0
May 7, 2008

english
If you have Microsoft 2007 you can try copying and pasteing the speech into the word document. Then click the review tab, then the translator tab next to the spelling and grammar checker under the thesaurus tab,then select which language to which language, and then press the ...
May 4, 2008

engl - citing
Is this individual someone you know personally? If it is someone you know personally you can just put what she said in quotations and not worry about citing what she said. You do not need to cite that type of information. On the other hand, if you recieved the information from...
May 4, 2008

Eth 125
Sam, I am currently in my eigth week of this class. This was my response to the discussion question. I hope this answer helps you. The ones that are most difficult to overcome are health care, housing, criminal justice, and education. These four societal challenges are ...
May 4, 2008

research writing
Use sources provided by the university library, your local library, peer- reviewed articles, and sites ending with gov and/or org. Wikipedia is useful but the information needs to be double- checked and researched. Some instructors will not all information from wikipedia ...
May 4, 2008

crit thinking
Guzy, I just finished that course in October. The whole point of the class is for you to think critically. I know the assignment was a bit of pain but without learning to think critically on your own, the rest of your upcoming classes will become difficult if you cannot.Best ...
May 4, 2008

math
8(5-n)=2n
May 4, 2008

jj pearce
8(5-n)=2n
May 4, 2008

SCI
Should we eliminate fats from our diets altogether and increase proteins? 2. What are some of the benefits that unsaturated fats provide when included in a balanced diet.
April 21, 2008

statistics
What is the median in the following set of values? 4, 7, 19, 22, 27, 39, 47
April 2, 2008

math
UMBRELLAS White = 6 Blue = x Red = 5x Green = 3x Black = x + 9 Purple = x + 2 The equation... 6 + x + 5x + 3x + x + 9 + x + 2 = 50 We know that purple is 5 so... x + 2 = 5 x = 5 - 2 x = 3 Now we know that x = 3. This is the problem we started off with 6 + x + 5x + 3x + x + 9...
March 18, 2008

health
the office hires an employee who's deaf, but who can lip read. what will the employer have to do in terms of this employee's job duties to comply with the americans with disabilities act?
March 11, 2008

statistics
Can you tell me the z score for the following numbers? 10, 12, 16, 18, 19, 21. Thanks, I am getting the wrong answer each time I do it.
March 3, 2008

music
how can i write really good song lyrics? i suck at writing! can someone help or better yet, give me a verse to work with? thnaks
February 19, 2008

Statistics
When calculating percentiles, ie the 33rd percentile, do you use the lower limit of the group that contains the 33rd percentile? as in this case: 70-79 11 46 80.7 60-69 9 35 61.4 50-59 8 26 45.61 40-49 7 18 31.58 Would you use the number 49.5??
February 12, 2008

Math
thanx
February 7, 2008

Math
Radius of the circle: ((X-4)^2)+((y+2)^2)-81=0
February 7, 2008

Math
What is the vertical asymptote of the function: f(x)= (X+5)/((X^2)-12X+36)
February 7, 2008

Physics
A fisherman notices that his boat is moving up and down periodically, owing to waves on the surface of the water. It takes 2.90 s for the boat to travel from its highest point to its lowest, a total distance of 0.640 m. The fisherman sees that the wave crests are spaced 7.60 m...
November 20, 2007

Physics Problem
The portion of string between the bridge and upper end of the fingerboard (the part of the string that is free to vibrate) of a certain musical instrument is 60.0 cm long [.6m] and has a mass of 2.23 g [.00223kg]. The string sounds an A4 note (440 Hz) when played. Where must ...
November 19, 2007

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