# Posts by Amanda

Total # Posts: 2,503

**statistics**

For a population that has a standard deviation of 10, figure the standard deviation of the distribution of means for samples of size- (b) 3

*April 4, 2011*

**Calculus**

The base of a solid is the region bounded by the parabola y^2=4x and the line x=2. Each plane section is perpendicular to the x-axis is a square. What id the volume of the square?

*April 3, 2011*

**Social Studies/World History**

hi I was doing a study guide for a big test I'm having in my World History class and I was wondering if anyone can help me answer this question... -what trends in political organization and economic development can be identified in 20th century world civilizations? I was ...

*April 2, 2011*

**Early Childhood Education**

B.preschoolers

*April 2, 2011*

**Geometry**

The scale factor of two similar triangles is 2/5. if the perimeter of the small triangles is 80 cm, what is the perimeter of the large triangle?

*April 2, 2011*

**prob/stats**

Nationwide, the amount charged by doctors for performing a particular minor surgical procedure averages $1220 and varies with a standard deviation of $270. We randomly select 140 bills from the population of all bills charged for this surgery. Let represent the average amount ...

*March 29, 2011*

**prob/stats**

Nationwide, the amount charged by doctors for performing a particular minor surgical procedure averages $1220 and varies with a standard deviation of $270. We randomly select 140 bills from the population of all bills charged for this surgery. Let represent the average amount ...

*March 29, 2011*

**chemistry**

what is the molarity of the Cl- ions at the stoichiometric point

*March 27, 2011*

**BUS 210**

Content and Development 170 Points Points Earned XX/170 Additional Comments: The student covers all key elements of the assignment in a substantive way. · Reviews the three business problems identified in Week Six paper · Develops technology solutions to the ...

*March 26, 2011*

**History**

peto a dis website a stupido

*March 23, 2011*

**physics**

When you push a 1.55 kg book resting on a tabletop it takes 2.10 N to start the book sliding. Once it is sliding, however, it takes only 1.50 N to keep the book moving with constant speed. What are the coefficients of static and kinetic friction between the book and the ...

*March 22, 2011*

**AN UNCERTAIN HORIZON**

A. stalin

*March 17, 2011*

**economics**

The majority of the world’s diamonds comes from Country A and Country B. Suppose that the marginal cost of mining a diamond is $1,000 per diamond and that the demand schedule for diamonds is as follows: Price Quantity $ 6,000 5,500 5,000 6,500 4,000 7,500 3,000 8,500 2,...

*March 14, 2011*

**physics**

The drawing shows a version of the loop-the-loop trick for a small car. If the car is given an initial speed of 4.6 m/s, what is the largest value that the radius r can have if the car is to remain in contact with the circular track at all times

*March 9, 2011*

**basics and tools of floral design**

a pick machine affixes a

*March 9, 2011*

**Physics**

An old car is traveling down a long, straight, dry road at 25.0 m/s when the driver slams on the brakes, locking the wheels. The car comes to a complete stop after sliding 305 m in a straight line. If the car has a mass of 755 kg, what is the coefficient of kinetic friction ...

*March 8, 2011*

**foundation of personal finance**

did the recommendation change the way you previously thought about buying vs leasing a car?

*March 6, 2011*

**investment and real estate analysis**

A 9-year bond has a yield of 6.0% and a duration of 7.982 years. If the market yield changes by 35 basis points, what is the percentage change in the bond’s price?

*March 5, 2011*

**Science**

How many calories of heat are needed to raise the temperature of 10 grams of water from 10 degrees Celsius to 20 degrees Celsius?

*March 5, 2011*

**precalculus**

nope their both wrong.

*March 3, 2011*

**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 don't 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 don't 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*

**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*

**Chemistry**

0.257

*November 22, 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*