Total # Posts: 319
Suppose that people's heights (in centimeters) are normally distributed, with a mean of 165 and a standard deviation of 6. We find the heights of 80 people. (a) How many would you expect to be between 158 and 172 cm tall?
March 15, 2012
An oval indoor running track with semicircular ends has the dimensions of 80' long, 34' wide, and the individual lane width is 5' wide. If the track is to be resurfaced how many square feet of material will be required? Help Please!
March 6, 2012
a ball is thrown straight up into the air with an initial velocity of 128 ft/sec, the total amount of time in seconds that it takes the object to return to the earth can be calculated by using the quadratic, 128t-16t^2=0. Determine the "flight time," t, of the ball.
December 12, 2011
At 20 degrees C ethanol has a density of 0.789 g/ml and H2O has a density of 1.0 g/ml. What is the % by volume of ethanol of a solution made by adding 50g of ethanol with 50g of H2O? Tutor Answer: Use density = mass x volume to convert 50 g ethanol to volume and to convert 50....
November 29, 2011
i thought that density = m/v? i've done the math and i think you are right because based on the above formula my answer is 126.74% However, i don't understand why if the density formula is as you stated? 1/50 = .02, 1/.789 = .01578 (0.01578/0.02) x 100 = 78.9%
November 28, 2011
At 20 degrees C ethanol has a density of 0.789 g/ml and H2O has a density of 1.0 g/ml. What is the % by volume of ethanol of a solution made by adding 50g of ethanol with 50g of H2O?
November 28, 2011
Presidents can circumvent checks upon themselves in all of the following ways EXCEPT executive privilege. executive statements. executive agreements. executive orders. I have no idea, I can't find it in my book. the first one?
November 15, 2011
The Federal Administrative System's main goal is to ________________________. implement the laws that are passed by Congress and signed into law by the President be as independent as possible from the executive branch create a huge bureaucracy to ensure that government ...
November 15, 2011
Which of the following is true regarding U.S. Senators? A.Senators are elected to 2 year terms. B.Senators can approve executive agreements. C.Each state has two Senators. D.Senators must be 25 years old. d sounds famaliar
November 15, 2011
The political system in which those who have governmental authority get and retain authority directly or indirectly because of winning free elections is called: A.a republic. B.an authoritarian system. C.a direct democracy. D.a representative democracy. D?
November 15, 2011
Four friends contribute sums of money to a charitable organization in Haiti in the ratio of 2:3:5:8. If the largest amount comtributed is $18,500, calculate the total amount contributed by the four people.
November 13, 2011
Calculate [H3O^-] in a 0.15M solution of benzoic acid, HC7H5O2(aq) having a Ka of 6.4 x 10^-5 I got. 6.4x10^-5=(x)(x)/0.15 6.4x10^-5= x^2/0.15 6.4x10^-5 x 0.15 = x^2 square root of 9.6x10^-6 = square root of x^2 x= 0.003098 The pH solution is -log [0.003098] = 2.50 b.) ...
October 13, 2011
A movie theater runs two films continuously. One film runs for 85 minutes and a second film runs for 100 minutes. Both movies begin at noon. When will the two films start again at the same time?
October 4, 2011
Damon, so what you did was apply the quotient rule to the ax part? Wouldn't the -8 be -8x then? And if I'm doing it right, would my final equation be this? 0=(5x^4+10x^3+x^2+4x+4)/(x^2+x+2)^2
October 3, 2011
The following gives the height of 100 men in centimeters. 153 162 168 154 151 168 162 153 161 167 157 154 165 156 163 165 160 171 170 173 164 158 163 155 167 162 168 153 161 166 163 162 163 163 163 164 165 163 162 162 163 161 162 162 158 162 167 158 169 168 168 156 160 158 169...
October 2, 2011
Can someone please HELP me figure this out? According to statistics gathered as part of a research project by a group of statistics students on the college campus, 376 out of the 439 deaths attributed to lightning strikes were male. If all of the names of the deceased were ...
September 24, 2011
The Everton college store paid $1859 for an order of 49 calculators. The store paid $11 each for scietific calculators. The others, all graphing calculators, cost the store $55 eaach. How many of each type of calculator ws ordered? Please answer in detail so that I can see ...
July 26, 2011
The number of tickets sold each day for an upcoming performance of Handel's Messiah is given..........? by N(x)=-0.3x^2+8.4x+10, where x is the number of days since the concert was first announced. When will daily tickets sales peak and how many tickets will be sold that ...
July 3, 2011
In your post, summarize the major similarities and differences between the forms of drama, poetry, and the short story. Demonstrate your ideas with textual examples from the course readings. In your response, include at least one example of each literary form. If you wish, you...
June 8, 2011
Reaearch - URGENT PLZ HELP
Bibliography Primary Source Siegalbaum, Lewis and Sokolov, Andrei. Stalinism as a Way of Life: A Narrative in Documents. New Haven: Yale University Press, 2000.
May 14, 2011
Total revenue is the total amount of money taken in by a business. An appliance firm determines that when is sells x washing machines, the total revenue, R, in dollars, is given by the polynomial R=252.05x-0.5x^2 what is the total revenue from the sale of 290 washing machines?
May 13, 2011
This equation is incorrect because when we multiply an exponent into a bracket we multiply it with the exponents of the terms inside the bracket. The correct equation should be: (xy)^3 = x^3y^3
May 12, 2011
a company bought 50lb of kona beans at $34.95 per lb. and plans to mix these with colombian beans at $7.99 per lb. wholesale. If they want the blend to be $11.95 per lb, how many lbs of colombian beans should they buy?
April 11, 2011
Best Wheels Bicycle Company is looking to automate production of a framing component and will need to purchase new frame fabrication machinery. The company has narrowed the selection to 2 machines that have a useful life of 3 years. The company operates 8 hours a day, 200 days...
February 25, 2011
1) a loaded cart with a mass of 96 kg sits at reat atop a 40 degree inclined plane that measures 20.5m long. accidentally the cart starts so to roll down the inclined plane with a frictional force of 5550N working against it for the intire 20.5m. deteremine the speed at the ...
February 21, 2011
Aron: The two double A batteries in my CD player are dead, so the CD player doesnt work. My television remote control, which also uses two double A batteries, works fine. So if I move the two batteries from my television remote control to my CD player, the CD player will...
February 20, 2011
A histogram shows that the mean of rain in your area has increased over the last five years. What is the probability that the mean will be higher this year than in the previous five years?
January 14, 2011
My assignment says to write no more than 150 words about the requirements specific law places on educators. I have the whole thing complete except for the Americans with Disabilities Act. From what I have read and understand, this focuses more on employers, public ...
January 6, 2011
Many businesses now have a Twitter account, MySpace account, or another social media tool they use to attract and maintain business. What value do social media offer for professional use? How has your commercial behavior been affected by social media
December 5, 2010
Last paragraph THe thought of the last stanza, the keyto the thought of the whole poem, is much like that of Wadsworth's beautiful lines: "One impulse from a vernal wood May teach you more of man, Of moral eveil and of good, Than all the sages can." Thus will the...
October 18, 2010
The next paragraph says: THe poem possesses a logical unity of thought and arrangement. The gold color of the dandelion reminded the poet of happy children playing as buccaneers; the warmth of its rich color suggested faraway sunny lands; such thoughts led to a reverie of many...
October 18, 2010
Please help me pick out the adjectives in this paragraph. In the first two stanzas, Mr. Lowell emphasized the wealth of the dandelion by using several phrases suggesting riches, such as "harmless gold," "buccaneers," and "Eldorado." In the third ...
October 18, 2010
What is the chronological order of the major legislation that makes up the history of employment law in this country? For each law, state the social problem the law was designed to address, and discuss how employment law has affected the workplace in the last two decades.
August 17, 2010
Communication and Gender Studies
Give an example of men in lecture mode and women being captive listeners. Secondly, provide an example of men and women using different listening signals.
June 27, 2010
Wheel Industries is considering a three year expansion project. The project requires an initial investment of $1.5 million. The project will use straight line depreciation method. The project has no salvage value. It is estimated that the project will generate additional ...
April 22, 2010
write 350 to 700 words in which you analyze and post how the human resources assistance plan and aids you have been working on for your final project fit into the company's strategic plan. I do not understand what I am supposed to do here. Could someone please help me..
March 18, 2010
Explain how having a negative self-schema affects ones social interactions. How does social intelligence affect ones responses in any given situation? How might a persons self-guides affect his or her perspective of the world?
March 11, 2010
gr 12 chem
true or false- correct/explain those that is false Benzene is generally more reactive than alkanes and less reactive than alkenes because of the bonding in its aliphatic ring The polymer produced from polymerization of H2NCH2COOH is......? Write out the formula/equation The ...
March 9, 2010
gr 12 chemistry
consider the two compounds, CH3CH2CH2CH2CH2OH and CH3CH2OCH2CH2CH3. Giving reasons for your choice, select the compound that a) will evaporate at a lower temperature b) has higher solubility in a non-polar solvent c) can undergo an addition reaction with hydrogen
March 2, 2010
Please check my nazi paper 8th grade
here's what I'm supposed to do ( you are being accused of being a conspirator -spy- for the Nazi Party. Persuade your accusers -American Patriots- that you are otherwise. ) Please check the paper I wrote below for grammar mistakes please! don't worry about spelling...
February 6, 2010
Which of the following statements most accurately characterizes African American marriages and childbearing in the early nineteenth century? a) Most married slaves who were not separated by sale lived in stable unions and had most of their children while they were together. b...
February 1, 2010
english question about writing comparative essay
For a comparative essay, i don't really know what to do once i've made my elaborations on both books for the body paragraph. example of what i did: topic sentence, talk about book #1, quote, elaborate. talk about book #2, elaborate...... and i'm stuck after this.
January 23, 2010