Thursday

March 5, 2015

March 5, 2015

Total # Posts: 2,178

**precalculus**

The earth's atmospheric pressure, P, in terms of height above sea level is often modeled by an exponential decay function. The pressure at sea level is 1013 millibars and the pressure decreases by 14% for every kilometer above sea level. (a) What is the atmospheric ...
*March 3, 2011*

**Physics**

Please Help! An object at 20 degrees Celsius with heat capacity 100 calories/Celsius is placed in 40 grams of water at 100 degrees Celsius. After equilibrium is reached, the object is removed from the hot water and placed in 200 grams of water at 0 degrees Celsius. What is the...
*March 1, 2011*

**math**

i can't solve for X , it's confusing...
*March 1, 2011*

**mathematics**

write a rule for nth term: 1/10, 3/20, 5/30, 7/40,.... i think the next term is 9/50 but i dont know how i got that
*March 1, 2011*

**Physics**

Please help! suppose you have some 20 degrees celsius water and some boiling water. How much of each would you use to make 4 kilograms of water at 45 degrees celsuis?
*March 1, 2011*

**Calc**

The temperature at any point in the plane is given by the function T(x,y)=100/(x^2+y^2+1). Find the direction of the greatest increase in temperature at the point (3,2). What is the magnitude of the greatest increase? Could someone help me with this, please? Thanks.
*February 28, 2011*

**Chemistry**

Please help me with these! Thanks :) Describe, in detail, how to make 5.5 liters of a 2.5 molar HCl solution from a 10.5 molar HCl stock solution. How many grams of a stock solution that is 85.5 percent H2SO4 by mass would be needed to make 150 grams of a 45.0 percent by mass ...
*February 27, 2011*

**Personal finance**

What amount would you have if you deposited $2,500.00 a year for 30 years at 8 percent (compounded annually)?
*February 22, 2011*

**Algrebra**

How do you write the rule for: y=3x+4 for x=8
*February 21, 2011*

**world history**

I am sorry. I am taking the classes for Penn Foster also. But I have to agree with Mrs. Sue because If you need that much help maybe you should contact the school and tell them that you need help. I posted up for help on one question and posted up for somebody to check my ...
*February 14, 2011*

**math-solving for x with e**

1.) e^(2x) - 3e^(x) - 4 = 0 2.) e^(1-2x) ((e^(3x+6) - e^(2x)) = 0
*February 13, 2011*

**chemistry**

what is the maximum percent yelid theoratically possible? can this value be atually be exceeded ? how do you account this?
*February 13, 2011*

**spanish**

Can someone check my work? Read the school rules listed below. In the the blanks write (P)profesor for realistic rules that were most likely written by teachers for their classrooms. Write (E)estudiante for improbable rules that were most likely submitted by students. P 1.Se ...
*February 10, 2011*

**math**

6/cube root of 4x
*February 2, 2011*

**childcare**

1c 2b 3d 4c 5a 6c 7d 8b 9a 10c 11a 12a 13c 14b 15c
*February 1, 2011*

**personal finance**

if the sales price of the pants is $26.25, what will joans total cost be after paying a 8% sales tax?
*January 31, 2011*

**Calculus**

Find the exact area below the curve (1-x)*x^9 and above the x axis
*January 31, 2011*

**Algebra 2/Trig**

I see where the extra step was! Thanks so much!
*January 30, 2011*

**Algebra 2/Trig**

We just started logarithms and exponential functions, and I'm kind of getting the gist but not really. Here is what I tried on one of the homework problems: 2^X=4^X+1 1)2^X=(2^2)^X+1 2)x=x+1 3)0=1 or no solutions I wasn't sure what to do between steps 1 and 2. Thanks!!
*January 30, 2011*

**Opinion Question**

What constitutes a miracle? (In your oppinion) I have to write a paper on this and needed some ideas.
*January 30, 2011*

**HEALTH CARE COMMUNICATION STRATEGIES **

Traditionally healthcare organizations have been based on the bureaucratic model. In what ways has the bureaucratic model enhanced healthcare communication? In what ways has it been a detriment? Would you recommend a different model to improve communication? What model would ...
*January 29, 2011*

**Science**

How many liters of carbon monoxide at STP are in 3.85 x 10^24 molecules of carbon monoxide?
*January 29, 2011*

**chemistry**

convert 4.37 moles of NaOH to grams.
*January 27, 2011*

**Finite Math**

Assume that you have a total of 15 people on the committee: 5 black males, 5 black females, 1 white male, and 4 white females. Party rules require that at least one black and at least one female hold one of the three offices. In how many ways can the officers be chosen while ...
*January 26, 2011*

**Math**

Select three (3) coins, but assume that there are 4 dimes, 4 nickels, and 2 quarters. In how many possible ways can the selection be made so that the value of the coins is at least 25 cents?
*January 26, 2011*

**Math**

For this problem, assume the balls in the box are numbered 1 through 8, and that an experiment consists of randomly selecting 2 balls one after another without replacement. What probability should be assigned to the event that at least one ball has an odd number?
*January 26, 2011*

**Maths**

What length will have a canvas has the inside of a swimming pool if the diameter of the swimming pool is 5,5 m
*January 26, 2011*

**math**

verify that f and g are inverse functions. f(x) = 5x^2 x>(or equal too)0 g(x)= (x+2/5)^1/2
*January 26, 2011*

**math **

Let g(x)=2x-7 and h(x)=x+4/3. Perform the indicated operation and state the domain.
*January 24, 2011*

**math**

h(x) = x-2/5 find the indicated value of h(h(-4))
*January 24, 2011*

**math**

would it be 5 third root 6?
*January 20, 2011*

**math**

5 third root 48 - third root 750
*January 20, 2011*

**ETH 125**

Sorry about the mutiple postings. It kept saying I had a web address which I didn't. I left out a few lines because of it.
*January 20, 2011*

**ETH 125**

Hispanics coming across the border will look to their family members in Wichita Falls for a place to live and help them find a job. Wichita Falls is home to Sheppard Air Force Base, which is the US Air Force’s largest technical training operation and NATO pilot training ...
*January 20, 2011*

**ETH 125**

Looking Ahead In 50 years I think Wichita Falls will be more ethnically and culturally diverse. As immigrants come across the border and enter Texas they will eventually migrate to Wichita Falls. We are 16% Hispanic and will have a steady increase for years to come.
*January 20, 2011*

**ETH 125**

Leadership Position The similarities between me and the people who are in leadership position in my community are we have the same cultural, language, race, and similar values. We are all striving to be better people and make a difference in the community. The differences ...
*January 20, 2011*

**ETH 125**

Local Media My texts and work manuals do contain information by or about people like me. They also represent people who are different from me. My textbook contains information about people of all races and cultures. The local media also represents people like me. The media ...
*January 20, 2011*

**ETH 125**

This is my finished essay. I don't think I used transtions very well please tell me what you think.This is the first time I have had to use headers. Did I use them properly? This essay is my final. Diversity in My Community Wichita Falls, Texas, is my hometown. My ...
*January 20, 2011*

**ETH 125**

Is this an okay thesis statement? Can you help me write a conclusion? Thesis statement: It is a community made up of few ethnicities, but together we are a strong community. Conclusion: The community I live in is very quiet, low crime rate, and an overall a wonderful place to ...
*January 20, 2011*

**ETH 125**

2. Final Project: Diversity and Your Community • Resources: Appendix A. • Write a 1,400- to 1,750-word autobiographical research paper that analyzes the influences of diversity as it relates to your community. In your paper, write your first-person account of how ...
*January 20, 2011*

**Physics**

i dont know
*January 16, 2011*

**drama**

Drama is appealing to people because it creates career options and it can last a life time it is also fun to use your emotions in interesting ways you can take anger and make it humerous sadness and make it angry i love drama and my friends find it appealing becuase it is a ...
*January 10, 2011*

**math geometry ITT**

so i know that when you have an isosceles triangle has 2 equal sides, and the 2 angles created by those sides are also equal . if a question gives me the angle at the top ( which is 40 degrees ), how do i find the 2 equal angles at the bottom ?
*January 10, 2011*

**american goverment**

among the broad purposes of the united states government spelled out in the preamble to the constitution os the obligation to
*January 10, 2011*

**Math 3**

6/11 + 2/13=
*January 6, 2011*

**english**

the wrinkled surface of a tiny lake Is it a metaphor or personification?
*January 4, 2011*

**Physics**

A tiny spring, with a spring constant of 1.20 N/m, will be stretched to what displacement by a 0.005 0-N force?
*December 19, 2010*

**ETH 125**

This is what I have so far. Native Americans are at risk of losing their children because of poor living conditions on the reservation, lack of food and clean water, and substance and alcohol abuse. Some Native Americans are told they are too old or not qualified to be parents...
*December 17, 2010*

**ETH 125**

Post a 200- to 300-word summary of a current issue between Native Americans and the federal government. Identify the legislation that you think is linked to the issue, and explain why you think there is a connection. Consult the National Congress of American Indians Web site, ...
*December 17, 2010*

**Chemistry**

I have computed for the density of the water @ 10deg celcius first. (999.103g/1L = 999.103g/L) Then I determined the density of the sulfuric acid by using the formula: spec gravity = Densityh2so4 / Densityh2o therefore, Densityh2so4 = (1.839)(999.103g/L) = 1.837mg/L Next, I ...
*December 12, 2010*

**Chemistry**

Industrial Sulfuric Acid (H2SO4) may be purchased as 97 % (weight percent solution). Find the concentration of this solution of H2SO4 in units of mg/L. Also find the molarity and normality. Sulfuric Acid (100%) has a specific gravity of 1.839. Assume that the temperature of ...
*December 12, 2010*

**math**

solve using square roots: 4(x-1)^2-15 =41
*December 11, 2010*

**spanish**

Miguel _____ que estudiar mucho y leer muchos libros
*December 10, 2010*

**Geometry**

A student asks how to find the shortest path between two points A and B on two different faces which are neither the top or bottom of a right rectangular prism, without leaving the prism. How do you respond?
*December 10, 2010*

**spanish**

historia
*December 9, 2010*

**math**

Wouldn't the square root of 4/3^2 be 4/3?? because your multiplying 4/3 by 4/3, and then dividing by 4/3/ which is 4/3.
*December 9, 2010*

**Math Correction**

Explain how you can tell(without graphing) that the function has no x intercept and no asymptotes. What is the end behaviour? r(x)= x^6+10 / x^4+8x^2+15 How would I solve this? I know it has something to do with factoring but im not sure what else to do. this is what i have so...
*December 8, 2010*

**math**

Look for a pattern in the table. Then write an equation that represents the table. x 0 1 2 3 y 1.5 4 6.5 9
*December 8, 2010*

**pre-algebra**

k im not sure how im supposed to do this 3(x+2)= 5-2(x-3) i need to know x
*December 8, 2010*

**Physics: Waves in Media**

By how many decibels does the sound intensity from a point source decrease if you increase the distance to it by a factor 6?
*December 7, 2010*

**Physics Light and Color**

The depth perception cue employed in the old-fashioned stereoscopes but not in plain photographs is: (a) variation in color, (b) variation in sharpness, (c) binocular disparity, (d) previous knowledge. (Choose one.)
*December 6, 2010*

**Physics Light and Color **

Suppose that you close one eye, and see two objects, C and D. As you move your head toward the right, C appears to move toward the left compared to D. Which object is closer? Explain.
*December 6, 2010*

**chemistry**

If 60 grams of KCl can be dissolved in 100 grams water. Would the remaining solution be unsaturated, saturated, or supersaturated?
*December 6, 2010*

**Chemistry**

the third question it should be 2 not 8
*December 5, 2010*

**Chemistry**

Write equations for the following reactions: the combustion of propane the incomplete combustion of propane to for CO and water the complete combustion of 8,8-dimethylpropane in oxygen
*December 5, 2010*

**chemistry **

Predict the the product for the following reactions. zinc + hydrochloric acid sulfuric acid + sodium hydroxide sodium + hydrogen acetic acid + coppper
*December 5, 2010*

**physics**

A full can of black cherry soda has a mass of 0.406 kg. It contains 3.38 10-4 m3 of liquid. Assuming that the soda has the same density as water, find the volume of aluminum used to make the can.
*December 4, 2010*

**Math**

why is it possible to find the sum of the angle measures of an n-gon using the formula (180n-360) *degrees*
*December 2, 2010*

**math**

If the mean of a set of 36 scores is 27 and two more scores of 40 and 42 are added, what is the new mean?
*December 2, 2010*

**college**

explain how the organism in a diagram has evolved physiologically to become suited to its environeme
*December 1, 2010*

**Phy. Science**

explain how the organism in a diagram has evolved physiologically to become suited to its environeme
*December 1, 2010*

**geometry**

how can I draw five lines to form 6 congruent triangles using a rectangle
*December 1, 2010*

**english**

at the end of chapter IV, Frankenstein pauses to moralize. What does he say about passion and how a person should deal with it?
*December 1, 2010*

**Spanish**

El debate: Ya casi llegÃ³ el momento del debate. AquÃ tienes algunos comentarios que el candidato estÃ¡ practicando para decir mÃ¡s tarde. Elige entre el subjuntivo y el indicativo para completar las oraciones con lo que dice. ...
*November 30, 2010*

**Math **

Explain how you can tell (without graphing it) that the rational function r(x)= x^6 +10 / x^4+8x^2+15 has no x intercept and no horizontal, vertical, or slant asymptote. What is its end behaviour? Please help? thankq
*November 28, 2010*

**Math**

If there are 16 people at a party and one of the group decided to conduct a poll of who the president of the united states was, explain whether you would expect the answer to be accurate and why?
*November 22, 2010*

**geometry**

find the meausre of each exterior angle for a regular nonagon
*November 19, 2010*

**physics**

a square of edge length 15.0 cm is formed by four spheres of masses m1 = 8.00 g, m2 = 3.50 g, m3 = 1.50 g, and m4 = 8.00 g. In unit-vector notation, what is the net gravitational force from them on a central sphere with mass m5 = 2.20 g?
*November 17, 2010*

**Math**

You are using glass tiles to make a picture frame for a square photograph with sides 10 inches long. You want the frame to form a uniform border around the photograph. You have enough tiles to cover 300 square inches. What is the largest possible frame width x. a. 3.6 inches &...
*November 17, 2010*

**Chemistry**

How do you balance: iron(II0 oxide+ oxygen--> iron(III) oxide
*November 17, 2010*

**Chemistry**

how would you balance Al2(CO3)3--> A;2O3+CO2
*November 17, 2010*

**Chemistry**

Calculate the mass of air in an air-filled tire and the mass of helium in a helium-filled tire. What is the mass difference between the two? Assume that the volume of the tire is 857 , that it is filled with a total pressure of 125 psi, and that the temperature is 26 . Also, ...
*November 16, 2010*

**10th grade geo**

answers to objective 3-c algebra with pizzazz
*November 15, 2010*

**math**

A money market fund pays 14% annual interest compounded daily. What is the value of $10,000 invested in this fund after 15 years?
*November 13, 2010*

**Math, Please help :/**

oops. my bad. It should say -The number of textbooks and telephone books combined equals 3 times the number of library books.
*November 11, 2010*

**Math, Please help :/**

Kyle had 36 books in his locker. Some were library books, some were textbooks, and the rest were telephone books. The number of library books and telephone books combined equals 3 times the number of library books.How many of each type of book were in Kyle's locker? Please...
*November 11, 2010*

**Introduction to vet terminology**

These are the answers to your questions 1. C 2. A 3. B 4. C 5. A 6. c 7. D 8. D 9. D 10.D 11.D 12.C 13.B 14.D 15.A 16.A 17.D 18.B 19.A 20.A I just took the test and got a 100%
*November 11, 2010*

**7th grade math**

78=67
*November 11, 2010*

**College Algebra**

According to my homework, and I just missed it but it gives me the correct answer this is 14.1 billion people.
*November 10, 2010*

**Chemistry**

A piece of cadmium is placed in a solution in which [Cd^2+]=[Sn^2+]=1.00M. Will the following reaction proceed spontaneously? Cd(s)+Sn^2+(aq)-->Cd^2+(aq)+Sn(s)
*November 9, 2010*

**Chemistry**

A voltaic cell is based on the reduction of Ag^+(aq) to Ag(s) and the oxidation of Sn(s) to SN^2+(aq). Write half-reactions for the cell's anode and cathode, and write a balanced cell reaction.
*November 9, 2010*

**Chemistry**

Why does sulfric acid make the electrolysis reaction of H2 and O2 go more rapidly?
*November 9, 2010*

**french 3**

Ah! Light bulb! Merci beaucoup! And as for the 2 tenses in the past, I find conjugating fun, but not having to think about HOW to use them :)
*November 9, 2010*

**french 3**

I understand that l'imparfait occurred habitually in the past, and passé composé happened only once. However I'm not sure how to form this sentence: Some thought his work was grotesque, others thought it was interesting. Certains critiques ont pensé...
*November 9, 2010*

**French(easy question)**

This is how I would translate it: There's a good movie/film at the Gaumont. Shall we go? Not possible. I am studying for the test tomorrow. Okay. Well, see you tomorrow. *My french teacher calls our tests/quizzes "interros". Hope this helps!
*November 8, 2010*

**Chemistry**

What is the concentration of ammonia in a solution if 22.35mL of a 0.1145M solution of HCl are needed to titrate a 100.0mL sample of the solution?
*November 8, 2010*

**Chemistry**

a 25.0mL sample of a 0.100M solution of aqueous trimethylamine is titrated with a 0.125M solution of HCl. Calculate the pH of the solution after 10.0, 20.0, and 30.0 mL of acid have been added; pKb of (ch3)3N=4.19
*November 8, 2010*

**Chemistry**

A 25.0mL sample of a 0.100M solution of acetic acid is titrated with a 0.125M solution of NaOH. Calculate the pH of the titration mixture after 10.0, 20.0, and 30.0 mL of base have been added.
*November 8, 2010*

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