Friday

September 4, 2015
Total # Posts: 505

**Statistics**

What is the probability that we would obtain two sample means that differ by 1.875, when the SD of the sampling distribution is estimated at .125 when our sample has 8 subjects?
*October 7, 2012*

**statistics**

How is the standard error of the mean influenced by sample size and standard deviation?
*October 6, 2012*

**math**

how to solve a quadratic equation in one variable ? plsss
*October 6, 2012*

**American History**

okay i took the test and made a 100 some of my questions were different so ill just give the ones that are the same cause some are incorrect question 2 is b question 3 is d question 9 is d question 13 is c question 14 is d question 18 is c now like i said i took the and made a...
*October 1, 2012*

**Geomatic Sequence**

In a geomatic sequence, the seventh term exceeds the fifth term by 1920. Find the sum of the first eleven terms if the common ratio of the sequence is 2.
*October 1, 2012*

**Arithmetic Sequence**

Given the third term of an arithmetic sequence less than the fourth term by three. The seventh term is two times the fifth term. Find the common difference and the first term.
*September 30, 2012*

**biology**

What structure in the moss is like the spore case in ferns?
*September 26, 2012*

**ECON 3**

A manufacturer of television sets trims sets in either black or grey and uses either a walnut or a maple stain. A consumer survey showed that 20% of consumers wanted a black trim with a walnut stain and that half of all consumers wanted a black trim or a walnut stain. If it ...
*September 19, 2012*

**ECON 2**

False signals. A procedure has been designed that will detect 99% of the defective assemblies in a manufacturing process. However, the probability that the procedure will declare a good assembly defective is 0.05. If 2% of all assemblies are defective, what percentage of the ...
*September 19, 2012*

**ECON**

A bank vice-president declared that the probability that the bank’s funds were being embezzled was 0.70 and that the probability that an embezzlement would be discovered by the bank examiner was 0.90. Given that the bank examiner does not find the embezzlement and that ...
*September 19, 2012*

**math**

Yolanda is putting up a fence for her dog in the shape of a square. Each foot of fencing costs $7. If Yolanda is planning to have each side of the fence be 10 feet long, how many feet of fencing will Yolanda need?
*September 19, 2012*

**Scientific Question**

Please help me check if I did my homework right base on a picture of picking strawberry farm. 1. Activity Investigation Picture Scientific Method: I. Perceiving the Problem Are these people a worker in a farm? II. Research a. Wearing different style of clothes b. Different ...
*September 4, 2012*

**Maths**

The population P of a particular city, Metropia, is growing at a rate proportional to the current population. The population at time t years is modelled by the equation P=Ae^kt where A and k are constants. With the aid of appropriate examples, explain how the growth of P over ...
*July 30, 2012*

**Maths B - Population Growth**

The population P of a particular city, Metropia, is growing at a rate proportional to the current population. The population at time t years is modelled by the equation P=¡¼Ae¡½^kt where A and k are constants. With the aid of appropriate examples, ...
*July 30, 2012*

**Maths B question - population**

The population P of a particular city, Metropia, is growing at a rate proportional to the current population. The population at time t years is modelled by the equation P = Aekt where A and k are constants. (a) With the aid of appropriate examples, explain how the growth of P ...
*July 28, 2012*

**What does this Maths B question mean?**

How do I do thi question? An example of a wine glass design, using three equations, is given below. The base of the wine glass is defined by a quadratic equation, the stem by a linear equation and the body of the glass by a square root function. The difficult part of the task(...
*July 28, 2012*

**Explanation of Maths B Question**

An example of a wine glass design, using three equations, is given below. The base of the wine glass is defined by a quadratic equation, the stem by a linear equation and the body of the glass by a square root function. The difficult part of the task(outlined on the next page...
*July 28, 2012*

**Explanation of Maths Question**

Can someone please explain what does these questions mean? Design a wine glass that uses at least 5 different equations to form the outline of the shape. At least half of your equations must be curves. It is easier if the design is done with the glass on its side, that is, ...
*July 28, 2012*

**11 Maths B**

Design a wine glass that uses at least 5 different equations to form the outline of the shape. At least half of your equations must be curves. It is easier if the design is done with the glass on its side, that is, with the axis of the design running along the x-axis
*July 28, 2012*

**History**

Discuss the differences and similarities in post-independence policies in India and Egypt. Please help me with this question If you could give me a little summary of each country it would be amazing. Its the only q I have left on this assignment.
*July 23, 2012*

**oraintation**

How will you apply these concepts in your educational, personal, or professional pursuits?
*July 8, 2012*

**Science **

1.The estimated doubling time for the black sea urchin population is approximately 1.5 years. What is the annual growth rate of the urchin? help please?
*June 29, 2012*

**Chemistry**

A student completes titration by adding 12.0 mL of NaOH(aq) of an unknown concentration to 16.0 mL of 0.15M HCl(aq). what is the molar concentration of the NaOH(aq)?
*June 7, 2012*

**Social Studies**

The last of Wilson's fourteen points called for
*June 1, 2012*

**Chemistry**

Thanks!
*May 30, 2012*

**Chemistry**

Find the molarity of [H+] and [OH-] in the following solutions: a) 0.050 molar NaOH b) 2.09g of calcium hydroxide in 100 mL of water c) 0.875 M H2SO4
*May 30, 2012*

**Chemistry**

That is super helpful, thanks. I missed a two days of class when we learned acids and bases, so I was a bit stuck.
*May 30, 2012*

**Chemistry**

100.0 mL Vinegar (d=1.06g/mL) contains 4% acetic acid. a. How many moles of acid are in 100 mL of vinegar? b. How many mL of 0.11 M NaOH are required to neutralize the vinegar?
*May 30, 2012*

**Chemistry**

Alright, sure. #9. 2H2O -> 2H2 + O2 15g H2O/1 x 1mol/18.02 = 0.832 mol H2O PV=nRT (98.9kPa)(v)=(0.832mol)(8.31 kPaxL/molxK)(290.2K) v=20.29L #11. 12.01g/gC x 100=49.48% 24.27gC/1 x 1mol/12.01g=2.02mol C 1.01g/gH x 100=5.15% 19.61gH/1 x 1mol/1.01g=19.42mol H 14.01g/gN x 100=...
*May 30, 2012*

**Chemistry**

Test corrections :) They're calculations/short answers. I'd just like something to compare answers to or help me get the full answer (all partial credits). Thanks! #9. When water is electrolyzed it produces hydrogen and oxygen. If 10.0% of 150.0g of water is ...
*May 30, 2012*

**Chemistry**

It's a molar heat reaction lab. 0.07g Mg Mg+2HCl->MgCl2+H2 What is the actual value for the heat of reaction based on the enthalpy's of formation? HfHCl= -118.53 kJ/mole HfMgCl2= -774 kJ/mole
*May 15, 2012*

**A Stop Sign**

is it an index, symbol or an iconic sign?
*April 25, 2012*

**History **

I'm doing a project on name change in south africa so I'd like to know why the name pretoria was changed to tshwane and why did they change it to tshwane??? and why Pietersburg was changed to polokwane and why did they change it to polokwane
*March 21, 2012*

**Biology Science**

Plankton, Fish, Crab, Shark. Plankton, Crab, Fish, shark. Depends on which fish and which crab. XD
*March 5, 2012*

**english**

There are many situations where one should say no. For example, imagine if a clumsy, crazy, annoying, creepy, stranger asks you on a date. Even though you don’t want to hurt his feelings just say no would this be an okay way to start?
*March 4, 2012*

**english**

I need ideas on how to start the paragraph.
*March 4, 2012*

**english**

I need help writing an illustration paragraph on the topic: saying no. I have to include the following devices 1 acyndeton, 1 polysyndeton, 2 interrupted movement, 2 parallel, 1 freight-train
*March 4, 2012*

**Business Studies **

I'm Studying For My Business Cycle Test and I'm finding it for hard to remember all the elements of the micro market and market environment so I was just hopeing someone could have like a catchy sentence for the elements in each environment e.g takeing the begining ...
*March 4, 2012*

**writing**

"Part 1: Write an exploratory essay in which you compare and contrast online learning with classroom (on-ground) learning. Your evaluation may include preparation time, rewards, pitfalls, etc. You may select the features that you want to compare and contrast. • Using...
*March 2, 2012*

**math**

What he did wrong is that William did not multiply the 1,000-gram by 1.
*March 1, 2012*

**math**

The 5th grade marching band includes boys & girls. There are 28 boys in a marching band. The boys are 7/10 of the students in the marching band. What fraction of students in the marching band girls? What is the total number of students in the marching band?
*February 24, 2012*

**MATH**

Carolyn and Kim are selling lemonade this summer. It costs $0.10 to make each cup of lemonade. They are going to sell each cup of lemonade for $0.25. What is the least number of cups of lemonade they need to sell in order to collect $10.00 more than they ...
*February 20, 2012*

**MATH**

PLZZZZZZ! I NEED THIS ASAP
*February 20, 2012*

**MATH**

Carolyn and Kim are selling lemonade this summer. It costs $0.10 to make each cup of lemonade. They are going to sell each cup of lemonade for $0.25. a. What is the total cost to make 55 cups of lemonade? Show or explain your work.$5.50 b. If they sell 55 ...
*February 20, 2012*

**Writing**

I'm Writing a Discursive Essay on the topic "is it more difficult to be a young person today then it was 50years ago", I have these main points: "we have technology but its brought us media pressue" "Better education system but with more pressue to...
*February 19, 2012*

**I need Help!**

An Example of where a difficult academic challenge would confront you in school? And how would you deal with it?
*February 5, 2012*

**Math**

List these numbers from least to greatest: 4 over 5,3 over 5,and 3 over 4 Please help me with a cherry on the top!!!
*February 1, 2012*

**math**

kevin says that 22 over 30 is greater than 22 over 32.Do you agree?Explain.
*January 31, 2012*

**math**

Explain how you can tell 26 over 100 is greater than 1 over 4????
*January 31, 2012*

**Math**

Which set of ordered pairs has point symmetry with respect to the origin (0, 0)? (5, 4), (-5, 4) (5, 4), (-5, -4) (5, 4), (5, -4) (5, 4), (4, 5)
*January 17, 2012*

**math**

Which set of ordered pairs has point symmetry with respect to the origin (0, 0)? (5, 4), (-5, 4) (5, 4), (-5, -4) (5, 4), (5, -4) (5, 4), (4, 5)
*January 17, 2012*

**math **

Two angles are complementary. One angle is twice the other. The largest angle has a measure of what. 120, 60, or 45
*January 15, 2012*

**chemistry**

please help me
*December 16, 2011*

**chemistry**

Hi I am in AP Chemistry and I did not take regulars chem so I have never done labs before and was wondering If anyone could give me examples on how to do a lab
*December 16, 2011*

**Physics**

help me, AP physics on part C!!!!!
*November 27, 2011*

**chemistry**

calculate 5.7 grams PbCl2= ions Cl-1
*November 14, 2011*

**algebra**

is the ordered pair a solution of the inequality? (6,15); 8y-9x>8
*November 11, 2011*

**music**

#26 Dikrayati #12 John Howatt #25 Mozart, Piano Sonata in A Major, No. 11 (K.331). (Use the Theme and first Variation only. Note that the first Variation has sounds of Turkish March Music. The first Variation ends when a rumbling bass stops at a cadence. This signals the close...
*November 5, 2011*

**physics**

nmgh
*October 30, 2011*

**math**

let w represent the number of words and m represent the number of minutes. Write a rule to show the relationship between w and m. 280 words in 8 mins
*October 15, 2011*

**Physics help!!**

109.6km/h
*October 10, 2011*

**chemistry**

C. 589
*October 2, 2011*

**multiple regression**

5. HR Assistant Survey A sample of HR assistants in Plano Texas was created. It was suggested that the data should be analyzed with a regression model to determine if salary was related to years of experience, aptitude test scores, EI (emotional intelligence)scores, number of ...
*September 14, 2011*

**United States Government **

The United States has this form of government. *representative democracy *monarchy *direct democracy *constitutional republic I think it may be D since a constitutional republic had a government with limited power where the people are the main government authority. But it ...
*September 12, 2011*

**Foreign language**

Mere baala dha tereeka vadhia heh.
*August 30, 2011*

**Geometry please help me need to finish!**

The slant height of a regular pentagonal pyramid is 6 cm, and the length of each side of the base is 3 cm. Find the lateral area.
*August 18, 2011*

**English**

What does it mean " to get along you have to play along"?
*August 18, 2011*

**AP World History Please help**

What was the nature and extent of the Umayyad Empire? How did the Abbasid Empire differ from the Umayyad Empire? What were the achievements of the Arab phase of Islamic development ending in 750? I just want to know how they want me to answer these questions ie. examples.
*July 2, 2011*

**AP World History Please Help Me Mrs.Sue**

4.What was the nature and extent of the Umayyad Empire?
*June 30, 2011*

**AP World History Please Help Me Mrs.Sue**

Thank You!
*June 28, 2011*

**AP World History Please Help Me Mrs.Sue**

Hi I need help with this What classical institutions survived the collapse of the classical civilizations and why? I just need help with knowing Romes institutions please help.
*June 28, 2011*

**math**

hi can you predict the next sequences possible from the numbers 1-50 05 16 20 30 41
*June 27, 2011*

**AP World History Please help**

Alright I just need help with this one What social structure did Confucianism imply? What were the key social classes, and how did they differ? What kind of social classes are they talking about political or religious??
*June 24, 2011*

**AP World History Please help**

alright :)
*June 24, 2011*

**AP World History Please help**

What social structure did Confucianism imply? What were the key social classes, and how did they differ? Why did Confucianism have such a deep impact on Chinese and East Asian history? What groups and institutions could benefit from it? What does the document tell us about ...
*June 24, 2011*

**AP World History Please Help Me Mrs.Sue**

Thank You so much Mrs.Sue this really helped.
*June 24, 2011*

**AP World History Please Help Me Mrs.Sue**

Compare the political structure of Hellenistic Greece to that of the Greek world before 400 B.C.E. What was the function of philosophy in Greek culture? What, according to the authors, were the principles of Greek culture? Define a polis. How did the polis change between 800 ...
*June 24, 2011*

**English-Native speakers**

I think so.
*June 23, 2011*

**Geometry Help!!!!!!!!!!**

Thanks anyway but that isn't one of the choices the answer is x> 3/11 i figured it out thanks for trying :)
*June 23, 2011*

**Geometry Help!!!!!!!!!!**

If the sides of a triangle have measurements 3x + 4 , 6x - 1, and 8x + 2, find all possible values of x. I also need help with this question please
*June 23, 2011*

**Geometry Help!!!!!!!!!!**

In triangle ABC if m<ABF=39 and BF is an angle bisector, find <BCE
*June 23, 2011*

**geometry**

I am pretty sure it will form a scalene obtuse triangle. hope i helped out :)
*June 23, 2011*

**AP World History**

Thanks Mrs.Sue is there any way you can help with this one I want to find websites were i can double check my answer the question is How and where did Hinduism and Buddhism spread?
*June 21, 2011*

**AP World History**

3.Explain the major tenets of Hinduism and its evolution from the Aryans to the Gupta. Please help with this question I have no idea how to answer its the last one could you give me some websites please. -Thank You
*June 21, 2011*

**Biology**

You are a botanist hired in the future to make a distant planet, Xyloph, habitable for human life. Your job is to help seed the planet with plant life by working with the Terraforming Team. All four major kinds of plants will be introduced into this new world. You are to help...
*June 12, 2011*

**chemistry**

What kind of reaction occurs when a molecule of glucose reacts with oxygen to give carbon dioxide and water? a.exothermic reaction b.endothermic reaction c.synthesis reaction d.irreversible reaction
*June 11, 2011*

**ALGEBRA**

Explain how factoring is used to solve quadratic equations. Demonstrate the process with an example.
*June 7, 2011*

**marketing**

The process of naming broad product-markets and then segmenting them in order to select target markets and develop suitable marketing mixes is called:
*June 5, 2011*

**Math**

1 1/3 - 1 3/4
*June 2, 2011*

**algebra 2**

What is 36x^3-33x^2-33x-6/9x+3
*June 1, 2011*

**AP World History Please Help**

Describe the development of the Chinese state and its political institutions. I really need help with this can somebody explain this to me.
*May 31, 2011*

**Chemistry**

How many moles of aluminum chloride can be produced if you start with 8 moles of aluminum and 9 moles of chlorine?
*May 24, 2011*

**Business Math 2**

Megan Green is interested in taking out a personal loan for $1,550. However, last year an identity theft scam left her with poor credit. Since then she has learned about the perils of identity theft from personal experience as well as from a variety of sources, including the ...
*April 26, 2011*

**Business Math**

Ron Prentice bought goods from Shelly Katz. On May 20, Shelly gave Ron a time extension on his bill by accepting a $5,000, 7.00%, 150-day note. On August 26, Shelly discounted the note at Roseville Bank at 8.00%. What proceeds does Shelly Katz receive?
*April 26, 2011*

**reading**

what this the answer for this question We can conclude from paragraph a)theories are often revised. b)theories are never modified. c)theories are always changed. d)theories are mostly illogical. The concept that the Earth is a sphere can be traced back 2,500 years to the Greek...
*April 19, 2011*

**science**

i need to solve this : 1. we should show the chemical structure of oligosaccharide which contains 2 galactoses and 1 saccharose. 2. compare the difference in physical features og dicarboxylic acids and glucose beta chain 3. determine the calorific value of 5g saccharose please...
*March 29, 2011*

**english vocabulary spelling**

the_____ was a conflagration,causing serveral buildings great damage
*March 23, 2011*

**Chem**

Determine the maximum g of Ba3(PO4)2 that can be formed from your mass of Na3PO4 . 12H2O
*March 23, 2011*

**math**

how do I express these decimals as fraction in lowest terms? -9.8 and 1.6666666
*March 15, 2011*

**Math**

Clue 1: I am less than 1,000. Clue 2: the sum of my 2 digits is 26 Clue 3: my ones digit is 8 Who am I?
*March 14, 2011*