Sunday

August 2, 2015

August 2, 2015

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*