Thursday

February 23, 2017
Total # Posts: 1,082

**math**

If f(x)=(3x+6)^–1, find f'(x).

*October 21, 2010*

**math**

If f(x)=(3x+6)–1, find f'(x).

*October 21, 2010*

**Chemistry**

27.0 mL of 1.00 M HClO4 are mixed with 27.0 mL of 1.00 M LiOH in a coffee cup calorimeter. The calorimeter constant is 28.1 J/C. Both were initially at 21.31 C. Calculate delta H(rxn) in kJ/mol for the reaction.

*October 20, 2010*

**statistics**

What would be the range of the scores 71, 37, 48 from the same set with 95% cofidence level?

*October 17, 2010*

**chemistry**

.819 mol CO2= 30604 g CO2 X= 3.604 g CO2/100.09 g/molCaCO3= .036 mol CaCO3 Y=3.604 g CO2/84.32 g/mol MgCO3= .043 mol MgCO3 I'm stuck. I don't think I did it right.

*October 17, 2010*

**chemistry**

Thank you. But could you explain how you got that equation for solving for x and y? I need to prove my answer.

*October 17, 2010*

**chemistry**

A mixture of CaCO3 and MgCO3 weighing 7.85 g was reacted with excess HCL. The reactions are CaCO3+2HCL=CaCl2+H2O+CO2 and MgCO3+2HCl=MgCl2+H2O+CO2. The sample reacted completely to produce 1.94 L CO2 at 25 degrees C and 785 torr. Calculate the percentage of CaCO3 and MgCO3 in ...

*October 17, 2010*

**Chemistry**

Given one of the following solution: 50.00mL of 0.10M of K2CrO4 answer the following. 1. How do you prepare the solution? 2. What volume (mL) of your solution contains 5.00X10(-4) moles of the solute? 3. What volume of your solution contains 1.00g of the solute? 4. What is the...

*October 17, 2010*

**Psy 340**

What are some examples of theories concerning sexual orientation, hormones, and the brain? Which one do you feel is most accurate? Why?

*October 14, 2010*

**statistics**

Sample size is 24, Mean rate of 6.50%, Standard Deviation is 1.20. Calculate 90% of confidence interval

*October 14, 2010*

**engish (beowulf)**

how does the battle between Beowulf and the dragon show the inequalities of the Anglo saxon class system?

*October 11, 2010*

**Business**

How did U.S manufacturers become vulnerable to offshore outsourcing?

*October 10, 2010*

**business**

•In a managers’ meeting, discuss the impact of the well-publicized ethical lapses in recent years by several large companies.

*October 4, 2010*

**algebra**

2v+18=16-4(v+7)

*October 3, 2010*

**physics**

The pendulum swings past the pole 14 times in 21 seconds. The weight of the bob is 10g. Calculate the period?

*September 29, 2010*

**Algebra**

Write a polynomial for the area between two concentric circles if the radius of the outer circle is two less than three times the radium of the inner circle.

*September 28, 2010*

**Algebra**

I have 18 bills that equal $100.00 (5-$10 bills, 9-$5 bills, 3-$1 bills, 1-$2 bill). How can this be expressed in an algebric equation?

*September 28, 2010*

**physics**

A tennis player aims to serve the ball horizontally when their racquet is 2.5 m above the ground. The distance from the player to the net is 15.0 m and the net is 0.9 m high (a) What is the minimum speed with which the ball must leave the racquet if it is to just clear the net...

*September 27, 2010*

**adult education**

do i use is / are invited? You and a friend or 2 is invited to my Garage Sale.

*September 26, 2010*

**algebra**

Find the indicated outputs for f(x)=4x^2 -4x f(0) f(-1) f(2)

*September 13, 2010*

**Algebra II**

its supposed to say sketch the graph of the x and y and then the -2¡Ýt¡Ý5 should be -2 < (or equal to) t < (or equal to) 5

*September 12, 2010*

**Algebra II**

I sketched the graph for this but I don't know how to find B and C: x=t-2 Sketch the graph of: for -2¡Üt¡Ü5 Y=t^2-4t-3 B. State the domain of x and the range of y. c. Write y as a function of x.

*September 12, 2010*

**Algebra II**

Find the quadratic equation x^2+px+q=0 if the roots a and b are the dimensions of a rectangle whose diagonal is 8 and area is 26

*September 12, 2010*

**Algebra II**

Given f(x)=x^3-7x^2+6x+14, what is the a. sum of its zeros? b. product of its zeros? c. sum of the squares of its zeros?

*September 12, 2010*

**Algebra II**

The ¡Ý is suposed to be a > or equal to and the upside down ! isn't supposed to be there.

*September 12, 2010*

**Algebra II**

Solve for x. Give your answer using interval notation. a. |2x-3|¡Ý 12 b. 9-2|x+1|<-3

*September 12, 2010*

**macro**

an isolated earthquake at the begining of the year desroyed part of the nation capital stock, and the nations govermnet significantly reduced its purchases of goods and services

*September 8, 2010*

**algebra**

How many different license plates are possible using the letters A and B,but there can never be 2 A's next to each other.

*August 30, 2010*

**Science**

How Does Earth's atmosphere make conditions on Earth suitable for living things?

*August 25, 2010*

**STASTICS**

If the median home price in your area has decreased in your area in the last 2 years, how does this differ from the mean price in your area? Please explain why and include examples.

*August 24, 2010*

**Math**

What would be the correct answer to this question? How do you find out the unknown factor in a multiplication problem?

*August 23, 2010*

**Maths**

Please help!!! The mass of a particular substance is known to grow exponentially at a rate of 1.5% per day. Its initial mass was 230 grams and, after t days, it weighed 325 grams. The equation modelling this growth is 230×1.015 t = 325. ...

*August 14, 2010*

**statistics**

Formulate a hypothesis statement and perform the five-step hypothesis testing procedure

*August 8, 2010*

**MTH233/statistics UOP**

You work for the public relations department of the Social Security Administration. In an effort to design better advertising campaigns, your department decides to conduct a survey to find out the opinions people in the United States have about the Social Security system. One ...

*August 7, 2010*

**MTH233/statistics UOP**

. Hypothesis Testing o Please complete the following 5-step hypothesis testing procedure in your Learning Teams: A simple random sample of forty 20-oz bottles of Coke® from a normal distribution is obtained and each bottle is measured for number of ounces of Coke® in ...

*August 1, 2010*

**MTH233/statistics UOP**

Please complete the following 5-step hypothesis testing procedure in your Learning Teams: A simple random sample of forty 20-oz bottles of Coke® from a normal distribution is obtained and each bottle is measured for number of ounces of Coke® in the bottle. The sample ...

*July 31, 2010*

**MTH233/statistics UOP**

A car company says that the mean gas mileage for its luxury sedan is at least 21 miles per gallon. You believe the claim is incorrect and find that a random sample of five cars has a mean gas mileage of 19 miles per gallon and a standard deviation of 4 miles per gallon. Assume...

*July 27, 2010*

**MTH233/statistics UOP**

Clickfraud has become a major concern as more and more companies advertise on the Internet. When Google places an ad for a company with its search results, the company pays a fee to Google each time someone clicks on the link. That’s fine when it’s a person who’...

*July 27, 2010*

**MTH233/statistics UOP**

Industry 1980 1997 Agriculture 290 727 Mining 994 586 Construction 4,473 5,513 Manufacturing 21,165 18,633 Transportation 4,623 6,247 Trade 20,258 28,813 Finance and Insurance 5,295 7,367 Services 17,186 37,380 • • The table above shows the number of employees, in ...

*July 22, 2010*

**MTH233/statistics UOP**

• Best Practices has the following caveats: • • Use a bar chart to show the frequencies of a categorical variable. • • Use a pie chart to show the proportions of a categorical variable. • • Preserve the ordering of an ordinal variable. •...

*July 22, 2010*

**MTH233/statistics UOP**

A manager has portioned the company’s sales into six districts: North, East, South, Midwest, West and International. What graph or table would you use to make the points below in a presentation for management? 1. A figure that shows the slightly more than half of all ...

*July 22, 2010*

**MTH233/statistics UOP**

Find one quantitative and one qualitative data set from a reliable source and determine the best way to present that data graphically. Show your graph and explain your reasoning for choosing this presentation method. When might the reported median of data be more appropriate ...

*July 22, 2010*

**Nutrition, Health, and Safety for Young Children**

What is a good thesis statement which discuss the overall wellness of young children and the role an Early Childhood Education Setting can play in a young child's health and well-being?

*July 18, 2010*

**algebra**

12-6x=3[2-4(x-6)] I KNOW THE ANSWER IS 11 BUT EVERYTIME I DO THE STEPS IT COMES OUT WRONG. COULD YOU SHOW ME DETAILED STEPS? Thankyou.

*July 18, 2010*

**math**

11.6% make it a fraction and a decimal

*July 6, 2010*

**verbs**

He had come downstairs to find her already gone

*July 3, 2010*

**algebra**

operations can you associate with coefficients

*June 11, 2010*

**Chemistry**

Draw the skeletal structure for (CH3)3CCH2COOCH3

*June 2, 2010*

**Chemistry**

What is the correct IUPAC name for 4-methyl-3-propylheptane

*June 2, 2010*

**economics**

1)Robert received a $100 gift certificate to a bookstore a year ago. The economy has been in an inflationary period for the last year. This gift certificate is A. not expressed in either real or nominal terms since it is not money. B. adjusted in terms of the CPI. C. expressed...

*May 25, 2010*

**economic**

are u sure there right

*May 25, 2010*

**economic**

1)Robert received a $100 gift certificate to a bookstore a year ago. The economy has been in an inflationary period for the last year. This gift certificate is A. not expressed in either real or nominal terms since it is not money. B. adjusted in terms of the CPI. C. expressed...

*May 25, 2010*

**economics**

1)Robert received a $100 gift certificate to a bookstore a year ago. The economy has been in an inflationary period for the last year. This gift certificate is A. not expressed in either real or nominal terms since it is not money. B. adjusted in terms of the CPI. C. expressed...

*May 25, 2010*

**Macro economics**

1)Robert received a $100 gift certificate to a bookstore a year ago. The economy has been in an inflationary period for the last year. This gift certificate is A. not expressed in either real or nominal terms since it is not money. B. adjusted in terms of the CPI. C. expressed...

*May 25, 2010*

**Macroeconomics**

to raise funds at providing more support for public schools,a state government has just imposed a unit excise tax equal to $4 for each monthly unit of telephone services sold by each telephone company operating in the state. The diagram below depicts the position of the demand...

*May 24, 2010*

**Macroeconmics**

to raise funds at providing more support for public schools,a state government has just imposed a unit excise tax equal to $4 for each monthly unit of telephone services sold by each telephone company operating in the state. The diagram below depicts the position of the demand...

*May 24, 2010*

**com150**

when writing an Apa essay do you include the words "introduction and conclusion" in your essay. Or is it just implied?

*May 22, 2010*

**science**

If an element has a gray luster and can be drawn into a wire, is it a nonmetal, metal, gas, or an alloy?

*May 19, 2010*

**science**

Are Flourine, oxygen, Sulfur and Phosphorus metals or nonmetals? I think they are nonmetals!!!

*May 19, 2010*

**science**

Are Iron and Gold metals or nonmetals?

*May 19, 2010*

**science**

In what form are most elements (in the periodic table) in nature? What does this mean?

*May 14, 2010*

**science**

I was to classify these elements as metals or nonmetals----iron, cobalt, sodium, oxygen,chlorine, and helium. This is how I classified them. Am I correct? The metals are iron, cobalt and sodium. The nonmetals are oxygen, chlorine and heluim.

*May 14, 2010*

**science**

If solid copper sulfate is mixed with water, what is formed? A mixture, a solvent, a solution or both a mixture and a solution?

*May 12, 2010*

**science**

A substance seems to completely fill a container, but more can be forced in. Is the substance a solid, liguid, gas or none of these????

*May 12, 2010*

**History**

I need to know if there is a site that lists federal presidential campaign financing laws, legal & illegal. All I can find is sites that have box diagrams. Thanks

*May 11, 2010*

**physical science**

which of the following properties of light support the wave theory; existence of photons, can be reflected, can be refracted?

*May 10, 2010*

**physical science**

which substance is a base in this equation, Ba(OH)2 + 2 HNO3

*May 10, 2010*

**geography**

I have to put indicators of measuring development in countries in order of importance they are :- literacy rates number of people per doctor, gross national product, % of population access to clean water, population density, % people employed in agriculture, % population ...

*May 10, 2010*

**Trig.**

In right triangle ABC, C is the right angle and sinA=(radical 3/2). What is the value of csc B?

*May 8, 2010*

**Logs**

Solve for x. log5x=(1/2). Express the answer to the nearest hundredth.

*May 8, 2010*

**Geometry**

In triangle ABC, side a=7, b=6, and c=8. Find the measure of angle B to the nearest degree.

*May 8, 2010*

**Math**

thanks for your help

*May 2, 2010*

**Math**

I'm confused.Can someone tell me if I have done this correct.I'm trying to get the average using a weighted scale: TOTAL GRADES: WEIGHT 90% ---------- 5% 100% ---------15% 95% --------- 15% 90% -----------5% 94.5% --------60% I multiplied the total grade by the percent...

*May 2, 2010*

**Statistics**

I'm confused.Can someone tell me if I have done this correct.I'm trying to get the average using a weighted scale: TOTAL GRADES: WEIGHT 90% 5% 100% 15% 95% 15% 90% 5% 94.5% 60% I multiplied the total grade by the percent, then added the percent. But I get 109.20 as a ...

*May 2, 2010*

**science**

what does FDA stand for in Australia, or what is it called in Australia?

*May 1, 2010*

**science**

Dr Bob What does FDA stand for?

*May 1, 2010*

**chemistry**

what does FDA stand for?

*May 1, 2010*

**chemistry**

In the synthesis of Aspirin, would you eat your own aspirin crystals? If not, provide three (3) reasons why not?

*May 1, 2010*

**Biology**

Thanks...this site is the best!!

*April 28, 2010*

**Biology**

Name 3 structures that help focus the light rays entering the eye: lens iris cornea Can someone tell me if this is right, if not a site I can check, please. Thanks

*April 28, 2010*

**Chemistry**

An unknown monoprotic weak acid, HA, has a molar mass of 65.0. A solution contains 2.20 g of HA dissolved 750. mL of solution. The solution has a pH of 2.200. What is the value of Ka for HA?

*April 27, 2010*

**chemistry**

ohh..I understand now, I forgot all about the ice table...I got 1.8 as well and that is the correct answer...Thanks!

*April 27, 2010*

**chemistry**

so (4.8e-2*30.0mL)=1.44 (3.6e-2*21.5mL)=.774 now what do I do

*April 27, 2010*

**chemistry**

I did: (4.8e-2*30.0mL)/1000mL=.0014 (3.6e-2*21.5mL)/1000mL=7.74e-4 Then I added the two to get .005474 then divided that by the total L to get .106 I then took the -log(.106) to get .975, but that's the wrong answer

*April 27, 2010*

**chemistry**

If 30.0 mL of 4.8 10-2 M HBr is added to 21.5 mL of 3.6 10-2 M NaOH, what is the pH of the solution?

*April 27, 2010*

**chemistry**

I do not understand how to determine if the substance is an bronsted acid or base

*April 27, 2010*

**chemistry**

Which of the following substances can act as a Bronsted acid in aqueous solution? (Select all that apply.) C3H8 NH41+ HCl H2 H2O H2CO3 PH3 Which of the following substances can act as a Bronsted base in aqueous solution? (Select all that apply.) PH3 PH41+ CO32- SO42- H2 CH4 NH3

*April 27, 2010*

**Physical Science**

How does the study of heat relate to the kinetic theory of matter? (Answer in a simplified terms please)

*April 27, 2010*

**Physical Science**

How does the study of heat relate to the kinetic theory of matter? (Answer in a simplified terms please)

*April 27, 2010*

**Physical Science**

How does the study of heat relate to the kinetic theory of matter?

*April 27, 2010*

**algebra**

you and a friend oplay a game in which you each toss a coin. you score a point for each head and your friend scroes a point for each tail. the first person to score ten points wins. the score is 8 to 6 in your favor. describe a simulation that completes the game and use it to ...

*April 27, 2010*

**Physical Science**

The vacuum in the doubled-walled vacuum bottle takes care of heat flow by what?

*April 26, 2010*

**Physcial Science**

The silvered wall of a vacuum bottle takes care of heat flow by what?

*April 26, 2010*

**college**

The vacuum in the doubled-walled vacuum bottle takes care of heat flow by what?

*April 26, 2010*

**social studies**

If the U.S. were to have another constitutional convention, would we keep a federal system or change it?

*April 25, 2010*

**college**

If the U.S. were to have another constitutional convention, would we keep a federal system or change it?

*April 25, 2010*

**chemistry**

For the equilibrium system: H2 + F2 <----> 2HF Kc = 230 If 5.80 mol of hydrogen gas and 5.80 mole are added to a 1.00 L flask what will be the concentration of HF at equilibrium?

*April 15, 2010*

**chemistry**

For the following reaction: 2NH3 ----> N2 + 3H3 6.42 moles of NH3 were placed in a 7.4 L flask and allowed to come to equilibrium. 3.60 moles of NH3 remain at equilibrium. Calculate Kc for the reaction.

*April 15, 2010*

**chemistry**

would you have to change the moles of NH3 to atm?

*April 15, 2010*

**chemistry**

For the following reaction: 2NH3 ----> N2 + 3H3 6.42 moles of NH3 were placed in a 7.4 L flask and allowed to come to equilibrium. 3.60 moles of NH3 remain at equilibrium. Calculate Kc for the reaction.

*April 15, 2010*