Saturday
August 23, 2014

Posts by Sally


Total # Posts: 885

Chemistry
Hello, I have a question about something we learned in chemistry today. We've been going over Ka/Kb table values, and using them to determine if a solution is acidic, basic or neutral. One of the compounds (in aqueous solution) are NH4OCl (aq), which is supposedly basic. ...
May 18, 2010

Algebra/trigonometry
The expression cos4x cos3x+ sin4x sin3x is equilvalent to?
May 18, 2010

algrbra/trigonometry
in triangle ABC, angle a=120, b=10, and c=18. What is the area of triangle ABC tot he nearest square inch?
May 18, 2010

algebra/trigonometry
What are the values of theta in the interval 0degrees less than or equal to theta less than or equal to 360 degrees that satisfy the equation tan theta - radical3=0
May 18, 2010

Algebra/trigonometry
okay thank you
May 18, 2010

Algebra/trigonometry
The expression (3-7i)^2 is equivilant to? i know what the answer is im just not sure how to get it please help
May 18, 2010

spanish
I need to translate words in to Spanish from english
May 16, 2010

algebra
find sales tax in your area --(6%). using tax rate, write a linear equation representing the total with tax for a purchase of x dollars. Using this equation to dtermine what the pretax cost of the item is if the total cost is $10.
May 13, 2010

Social Studies
Explain the use and development of transportation and communication systems in regions of Canada.
May 10, 2010

Math
I have a bag of tiles 0-9. Without looking select a tile, record, return tile, select a second tile. What is the probability that exactly one tile will be a prime number?
May 5, 2010

Chemistry
a) moles of malachite in 1g: 1g / (221.12g/mol) = .004522 mol (b) moles of CuO produced: .72g / (79.55g/mol) = .009051 mol (c) ratio of moles of CuO produced per moles of malachite decomposed: 2CuO/CuCO3(OH)2 2*79.5/221.1 = 0.719 3. Use the mole ratio of CuO produced per mole ...
May 3, 2010

chemistry
(a) Mass of an empty Erlenmeyer flask (g): 91.780g (b) Mass of the Erlenmeyer flask with malachite(g): 92.780g (c) Subtract (a) from (b) to obtain the mass of malachite (g): 1g (c) Mass of Erlenmeyer flask with CuO(g): 92.500g (d) Subtract (a) from (c) to obtain the mass of ...
May 3, 2010

chemistry
3. Use the mole ratio of CuO produced per mole of malachite to write a balanced equation for the malachite decomposition reaction. Assume that CO₂ is also a product of the decomposition. CuCo3*Cu9OH)2 -----> 2Cuo+Co2+H2O 0.004522431 moles of malachite 0.01257071 moles...
May 3, 2010

Geometry
In Triangle ABC, a=7, b=6, and c=8. find angle B to the nearest degree?
May 2, 2010

human services
yes
April 22, 2010

human services
What are ethical dilemmas in medicare, medicaid, family planning, patient privacy, and privatilization?
April 22, 2010

AP Chemistry
The Ksp is 2.4 x 10^ -5. When I worked through this problem again, I came up with 2.0 x 10 ^-4 for Qsp
April 21, 2010

AP Chemistry
Thank you... Just to make sure... Since Qsp= 0.005 a precipitate will form.
April 21, 2010

AP Chemistry
Does precipitation occur when 100. mL of 0.050 M CaCl2 is added to 100. mL of 0.10 M K2SO4? Show calculations to support your response.
April 21, 2010

AP Physics
If 540 nm light falls on a slit 0.0490 mm wide, what is the full angular width of the central diffraction peak? °
April 21, 2010

AP Physics
Monochromatic light falls on two very narrow slits 0.050 mm apart. Successive fringes on a screen 4.60 m away are 5.7 cm apart near the center of the pattern. Determine the wavelength and frequency of the light. wavelength nm frequency Hz
April 21, 2010

AP Physics
Monochromatic light falls on two very narrow slits 0.050 mm apart. Successive fringes on a screen 4.60 m away are 5.7 cm apart near the center of the pattern. Determine the wavelength and frequency of the light. wavelength nm frequency Hz
April 21, 2010

american history
How did the Woodfrow Wilson's reform platform during the 1912 campaign differ from that of Theodore Roosevelt?
April 19, 2010

Trig
A. Find simpler, equivalent expressions for the following. Justify your answers. (a) sin(180 + è) (b) cos(180 + è) (c) tan(180 + è) B. Show that there are at least two ways to calculate the angle formed by the vectors [cos 19, sin 19] and [cos 54, sin 54].
April 17, 2010

Trig
4. Asked to simplify the expression sin(180−è), Rory volunteered the following solution: sin(180−è) = sin 180−sin è, and, because sin 180 is zero, it follows that sin(180−è) is the same as −sin è. Is this answer ...
April 17, 2010

math/computers
Problem: Solve X mod Y for all positive integers. Do so without using multiplication or division.
April 16, 2010

geometry
5. The lengths of segments PQ and PR are 8 inches and 5 inches, respectively, and they make a 60-degree angle at P. (a) Find the area of triangle PQR. (b) Find the length of the projection of segment PQ onto segment PR. (c) Find the length of segment QR. (d) Find the sizes of ...
April 15, 2010

Math
Tim put red, white and blue marbles in a bag. One-third are red, one-fourth are are white and ten are blue. how many of each are in the bag and what color are they?
April 14, 2010

human services
what is ethical advisory boards?
April 13, 2010

vector
If two vectors u and v fit the equation (u − v) • (u − v) = u•u+v•v, how must these vectors u and v be related? What familiar theorem does this equation represent?
April 13, 2010

geometry
The lengths of segments PQ and PR are 8 inches and 5 inches, respectively, and they make a 60-degree angle at P. (a) Find the area of triangle PQR. (b) Find the length of the projection of segment PQ onto segment PR. (c) Find the length of segment QR.
April 12, 2010

vectors
If two vectors u and v fit the equation (u − v) • (u − v) = u•u+v•v, how must these vectors u and v be related? What familiar theorem does this equation represent?
April 12, 2010

math
A little, but confusing sometimes.
April 12, 2010

math
What is the length of the vector [5 cos theta, 5 sin theta]? If the vector [5,0] is rotated 36 degrees in the counter clockwise direction, what are the components of the resulting vector?
April 12, 2010

Trig
Find all solutions w between 0 and 360, inclusive: (a) cosw = cos(−340) (b) cosw = sin 20 (c) sinw = cos(−10) (d) sin w < − 1/2 (e) 1 < tanw
April 12, 2010

math
What is the length of the vector [5 cos è, 5 sinè]? If the vector [5,0] is rotated 36 degrees in the counter clockwise direction, what are the components of the resulting vector?
April 12, 2010

math
Thanks
April 12, 2010

math/trig
What graph is traced by the equation (x, y) = (5sin 12t , 6−5 cos 12t)?Think of another equation that will produce the same graph. Use your calculator to check.
April 11, 2010

math
Solvefor y: x2 = a2 + b2 − 2aby
April 11, 2010

geometry
A segment that is a units long makes a C-degree angle with a segment that is b units long. In terms of a, b, and C, find the third side of the triangle defined by this SAS description. You have done numerical versions of this question. Start by finding the length of the ...
April 11, 2010

math/geometry
Jamie rides a Ferris wheel for five minutes. The diameter of the wheel is 10 meters,and its center is 6 meters above the ground. Each revolution of the wheel takes 30 seconds. Being more than 9 meters above the ground causes Jamie to suffer an anxiety attack. For how many ...
April 11, 2010

science 7
1o plant based products used weekly. Classify them into plant for food and plant for fiber
April 11, 2010

grammar
Which one do you think it is first?
April 9, 2010

human services
What is the difference between primary, secondary, and tertiary preventio? I am workiong on three scenario's in hsm/210?
March 31, 2010

English
Yes, for everything is action.
March 28, 2010

social studies
what are detors called when they work to pay off there det?
March 24, 2010

bis/219
Discuss how all three of the book stores address ethical, legal and security issues
March 23, 2010

Math (trig)
In ABC, sin A equals 2/3 , sin B equals 4/5 , and side a equals 20 Find side b?
March 21, 2010

English
is the following sentence biased? Our new district attorney, a Cuban American, is making a speech on Saturday.
March 17, 2010

algebra
1. You have recently found a location for your bakery and have begun implementing the first phases of your business plan. Your budget consists of an $80,000 loan from your family and a $38,250 small business loan. These loans must be repaid in full within 10 years. a. What ...
March 16, 2010

communications
What are personal conflict management styles
March 16, 2010

history
why did people think they could be free from suffering through buddhist teachings?
March 14, 2010

Math
Find P(5,2).
March 10, 2010

math
A set of data is normally distributed with a mean of 16 and a standard deviation of 0.03. What percent of the data is between 15.2 and 16?
March 10, 2010

human resource
Is there anyone familiar with course 230/Ethical Issues in Human Services???
March 4, 2010

human services
Which do you think ahs the greatest power to solve or prevent the delimmnas?
March 4, 2010

human services
I scored an A
March 4, 2010

human services
I am totally lost!!!
March 4, 2010

human services
Am I on the right track---Human services organizations are in the line of business. The deilemmas ar this affects the culture od the society, leaders are reaponsible for progress oth oragnization , and people are directed by sources that are mandated through the mission of the...
March 4, 2010

human services
How does the unique realtionship between human service oragnizations and the populations they serve impact ethical decisions? what are some dilemmas that occur in human service organizations? which do you thind has the greatest power to solve or prevent these dilemmas;...
March 4, 2010

childcare
the formation of childrens core values is most strongly influenced by?
March 3, 2010

Human Services
In the code of the Community Service Code why is theinstructuin is necessaary? what does it tell you about the relationship between law and ethics?
February 27, 2010

macroeconomics
Suppose in 2009 the united states congress passes a minimum wage law that increases the minimum wage (the lowest legal wage) to 7.25 per hour and has a provision that increases the minimum wage at the beginning of each year based on the CPI for the previous year. a.) If the ...
February 27, 2010

macroeconomics
In 1995, the CPI was 152.5 and the price of an economics textbook was 70.00 dollars and a music cd was 16.00 dollars. If the CPI was 172.3 in 2007, what were the prices of the economics textbook and the music cd in 2007 dollars
February 27, 2010

college
What is the difference between values and factors in human service organization
February 26, 2010

social studies
can you please compare and contrast ; direct democracy and representative democracy?
February 19, 2010

physics
The magnitude of the vectors F is 20 N, the force on the right is applied at an angle 55◦ and the the mass of the block is 75 kg. If the surface is frictionless, what is the magnitude of the resulting acceleration? Answer in units of m/s2.
February 12, 2010

6 math
Ricky had 2/3 gallon of fruit punch left over from his party. He gave Jason 1/4 gallon the next day. What fraction of a gallon of fruit punch does Riky have left?
February 8, 2010

College Physics
A current exists in a wire that gradually narrows down to a smaller diameter. How do the drift velocity, the current density, and the electric field vary along the wire? Can you please help explain this?
February 4, 2010

math (calc 2)
x+y=3 x-4=-(y-l)^2 rotate about the x-axis
February 1, 2010

physics
A man can throw a ball a maximum horizontal distance of 149 m. The acceleration of gravity is 9.8 m/s2 . How far can he throw the same ball verti- cally upward with the same initial speed? Answer in units of m.
January 28, 2010

health
Things that are happening in the world today that can cataclysmically affect public health
January 27, 2010

algebra
calculated area of a room is 174.2 square feet and the actual area is 149.6 the question was 'What is the relative error of the area to the nearest ten-thousand?' Im confused about what is relative error and how can i get that?
January 22, 2010

Math
How do you solve this problem? 3/4(11/12-7/8)+5/16
January 21, 2010

Math
How do you solve this? I have tryed so many times and can not get the right answer. (1.65-1.05)^2/0.4+0.8 The answer is suppose to be 1.7 but everytime I do the problem i don't get anything near that answer. Help would be greatly appreciated.
January 21, 2010

Algebra
Hello, need help in finding the slope for this question(0,-9) and (-4,0) thanks sally
January 20, 2010

world history
How did the Reformation in England effect the colonization of the New World?
January 16, 2010

physics
What vector represents the displacement of a person who walks 15 km at 45 degrees south of east, then 30 km due west?
January 11, 2010

AP Statistics
A. .0251 B. .0020 C. None
January 3, 2010

Math
The class average on a math quiz was 74 and the standard deviation was 6.8. Find the z-score for a test score of 82.
December 12, 2009

math
f(x)=xsquared+10 and g(x)= square root of x-1 and i have to figure out g(f(-3) i just dont know how to do it because i thought you could not have a negitive under a radical?
December 3, 2009

art
i need a photo of an animal, I can't think of any animal, please send some pictures!
December 2, 2009

English
In the book To Kill A Mocking Bird why does Mayella also represent a mocking bird. Who in todays society can be looked upon as a mocking bird?
December 1, 2009

math
because if you think about it if you double 3 that is 6 and if you take half of 8 that is 4 and your answer to 24 divided by 6 is 4 im not sure if this helps but thats all i got=]
December 1, 2009

Ap world history
well i started writing a thesis statement but im not sure if it is correct? i wrote: During the classical period Han and Roman attitudes towards technology were self glorifying, however, the Han had a more unified and was more to the common people, where, Rome had an ...
December 1, 2009

Ap world history
How do i write a thesis statement for analyze the Han and Roman attitudes towards technology? Or can i get one to use?
December 1, 2009

math
the mean is an average of the data and do you mean the median? not medium?
December 1, 2009

communications
Does anybody know what an eletronic version of a print ad is? I have an idea, but I am not sure if I am correct
November 21, 2009

analogies
ring is to sting as brick is to waht?
November 19, 2009

french
ms.sue please help
November 18, 2009

french
Dont copié formé thé book oh ya dont copié formé thé book cause you Oiil inde up being triste soi remembré not toi copié frome thé book oh ya! translation in english please!
November 18, 2009

Ms.Sue
Thank you very much.
November 14, 2009

communication
I just need to find out, were can I find any info on how doe the media influence or affect children. I need the history and the controversy and identify the major conflicting points of view
November 14, 2009

communications
I am looking for any article to help me with that question.
November 14, 2009

communications
Next, you will explain the nature and history of the controversy and identify the major conflicting points of view in the discussion on how Does media influence or effect children. I am having trouble finding what I need.
November 14, 2009

science
what is the connection between native americans and federal government
November 6, 2009

Medical Transcription
What is the main difference between a stem cell and a cancer cell?
November 6, 2009

5th Grade Math
Oh by the way they start at the same time..
November 5, 2009

5th Grade Math
The chapter was about finding the LCM which in this case is 40. But I thought since the first time around it takes him 8 minutes, then the 2nd time would be 16 minutes. It would take him 5 trips to equal 40 and Isaiah 4 trips. But Nick's time is still beter than Isaiah.
November 5, 2009

5th Grade Math
Nick and Isaiah both run a mile. Nick runs in 8 minutes and Isaiah runs it in 10 minutes. How long would it take Nick to run pass Isaiah for a second time. I think the answer is 16 mintues. The LCM =40
November 5, 2009

Pages: <<Prev | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | Next>>

Search
Members