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April 1, 2015

Posts by DiANA


Total # Posts: 740

mat117
Determine whetere each of the following trinomials is a perfect square. If it is, factor the trinomial. x^2 - 24x + 48 I cannot get the 24x I've tried (x-24)(x - 2) What am I doing wrong? It is not a square. THe factors are 21.797 and 2.20, approximately.
June 26, 2007

mat 117/algebra
Find a value for k so the 9m^2-kn^2 will have the factors 3m + 7n and 3m -7n. Please show me how to get this and show the work please. Use that (a-b)(a+b) = a^2 - b^2 So, you can read-off that k = 49.
June 26, 2007

mat 117/algebra
Find all positive values for k which each for each of the following can be factored. (1) x^2 + x + k) k<= 1/4
June 25, 2007

Penguins
Which species of Penguins is the largest? Check this site for the penguin species that's the largest. http://www.enchantedlearning.com/subjects/birds/printouts/penguins.shtml
June 25, 2007

mat117/algebra
The area of a rectangle of length x is given by 3x^2 + 5x. Find the width of the rectangle. Show me the formula and how to use it please. area= length times width 3x^2 + 5x = x * width divide both sides by x, then you have width.
June 24, 2007

mat 117/algebra
Find the GCF of each product. Please show the steps so I can work the problem by myself. it is 6y squared - 3y (6y^2-3y)(y+7) 3y(2y-1)(y+7) 3y will be the greatest common factor, as each term when you multiply it out will have a 3y. In case you want to work it out.. 3y(2y^2+...
June 24, 2007

math117/algebra
The price of an item is given by p=2xsquared - 100. Find the polymonial that represents the revenue generated from the sale of x items. Multiply the price term, 2x^2 - 100, by the number of sales, x. That should be the revenue from selling x units. The p(x) relationship you ...
June 23, 2007

math 117/algebra
The US population 1990 was approximately 250 million, and the average growth rate for the past 30 years gives a doubling time of 66 years. The above formula for the US then becomes P(in millions) = 250 x 1(y - 1990)/66 (1) What will the population of the US be in 2025 if this ...
June 22, 2007

math 117 algebra
The cost i dollarsof manufacturing w wing nuts is given by the expression 0.07w + 13.3. Find the cost when 375 wing nuts are made. What is the average cost to manufacture one wing nut? Put in 375 for w, and compute the cost. Average cost= costabove/w I'm sorry this still ...
June 22, 2007

math/algebra
1) The length of one of the equal legs of an isisceles triangle is 8cm less than 4 time the length of the base. If the perimeter is 29 cm, find the length of one of the equal legs. a) 4 cm B) 5 cm C) 11 cm d) 12 cm 2) The perimeter of a rectangle is to be no greater than 300 ...
June 14, 2007

math/algebra
The sum of tow numbers is 71. The second is 7 more than 3 time the first. What are the two numbers? let x = the smaller number then you know that 7+3x +x =71 solve for x
June 10, 2007

math/algebra
Sally bought three chocolate bars and a pack of gum and paid $1.75. jake bought two chocolate bars and four packs of gum and paid $2.00. Find the cost of a chocolate bar nad the cost of a pack of gum. 3C + 1G= 1.75 2C + 4G=2.00 solve. I know that i have to eliminate the c'...
June 10, 2007

math/algebra
Rewrite the equation -x -6y = -6 as a function of x. add x to both sides, add six to both sides.
June 10, 2007

math/algebra
solve each of the following systems by substitution. 16) 5x -2y = -5 y - 5x = 3 20) 8x -4y = 16 y = 2x - 4 28) 4x -12y = 5 -x + 3y = -1 Step one: Solve on of the equations for one of the variables. y=2x-4 Step two:Substitute the expression for the variable found in step one ...
June 7, 2007

math
if f(x= 5x - 1 find f(a-2) Please show me the work so I can understand how to arrive at the solution. Thank you. f(a-2)=5(a-2)-1
June 1, 2007

math
the inventor charges $4.00 per unit, then her profit for producing and selling x units is given by the function P(x) = 2.25x - 7000 (a) What is her profit if she sells 2000 units? (b) What is per profit if she sells 5000 units? (c) What is the break-even point for sales? (a) ...
June 1, 2007

math
I have a graph that shows a ---- kind of 3 line above the solid line for x & y. My assignment is as follows. Whe have graphed the boundary line for the liear inequality. Determine the correct half-plane. y >3 First how do I solve and 2 how do I graph it? If the allowed area...
June 1, 2007

math
How do you factor 3x^2-x-4? thanks in advance How do you factor 3x^2-x-4? thanks in advance 3 times what = 3? 3 of course. giving you (3x+/-a)(1x+/-b). a and b can only be 1 and 4 or 2 and 2. Can you take it from here? (3x-4)(x+1)?
May 10, 2007

Physics
If you have steel and wood at 0 Celsius, which is colder Both are the same temperature.
March 11, 2007

computers
What are Active X controls? Are we supposed to "enable" or "disable" them? does not matter http://www.webopedia.com/TERM/A/ActiveX_control.html You have to use your judgment, depending on which program seems to be requiring it.
February 15, 2007

computers
What are the main points to consider when choosing a monitor? What is the footprint? The user's eye sight. Cost. There may be othrs.
February 9, 2007

computer science
Is there a website that explains computer terms and definitions? http://www.computeruser.com/resources/dictionary/ http://www.webopedia.com/ Another site from your first post is below.
January 12, 2007

computer science
Is there a website that explains computer terms and definitions? http://whatis.techtarget.com/
January 12, 2007

Microeconomics
I don't know why you said it was perfectly inelastic when is not. Is relative elastic
December 8, 2006

writing
Which one is correct: As president Bush walked to rhe podium,... or As President Bush walked to the podium,.... Since that is his official title, it would be treated the same way as Mr., or Gen. Cap on Pres
October 21, 2006

writing
My thesis is: Our nation needs a health care plan capable of addressing the needs of each individual. My Question is: How can I make this into a powerful thesis staement? You could start out by indicating that there is a lack of adequate health care for many individuals in an ...
October 20, 2006

writing
Can you tell me what type of essay I would be writing in response to this statement: "What, if anything, is significant about an issue--expressed in a claim?" My instructor told us to write an essay to this question. A "claim" is usually the term for the ...
October 18, 2006

writing
can you tell me what direction to take with this? My essay: During the last century, the average life span of Americans nearly doubled, from 49 years in 1900 to nearly 80 years in 2000. Increased life expectancy and advances in U.S. healthcare means that Americans now live ...
October 17, 2006

writing
Based on what I have so far, what direction do you think I should go--what do you feel the thesis is about? This will eventually end up 10 pages long. I am concerned that I will not find enough to write about. The assignment is, "What, if anything, is significant about an...
October 17, 2006

writing
Can you explain the differences in these terms, and the function they serve when writing an essay? thesis and thesis statement central reasoning and central relationship The thesis is your central idea, your main idea, the point you are trying to prove in your paper. The ...
October 13, 2006

social science
Is iot possible to find out the number of physicians in a given practice--per state? example: how many doctors have a practice in geriatrics in the state of Utah? http://www.ama-assn.org/cgi-bin/sserver/datalist.cgi I found it by state and county, but not just by state.
October 10, 2006

Writing
how can I send material that is only intended for teachers, instructors, etc..and not the world? i don't think you can. you have to copy and paste your material onto this forum and teachers will help you with it. I believe that's the only way. "anon" is right...
October 9, 2006

Writing
May I submit my draft for an essay for your comments? Please put your draft on the board and one of the teachers will be glad to comment.
October 9, 2006

Writing
Please don't post my question or your answer because I do not want others to steal my idea! The only way we have to communicate with you is by posting on our message boards. Sorry. =( I need to learn to type on A computer. http://www.bbc.co.uk/schools/typing/flash/stage1....
September 29, 2006

Writing
Do you think it is truly possible to get all of the information I would need to write an essay about the sudden "halt" or end of production of electric cars? And, what about the Hybreds? I am apprehensive about this topic because I may not be able to find all there ...
September 29, 2006

accounting
Is there a method of determining if you debit or credit an account? How do you know if you should debit or credit a transaction? If it's a balance sheet accout you need to learn (and mrmorize) which side of the equation i't on, and it's normal balance. Assets ...
September 21, 2006

chemistry
which is saltier the gulf of mexico or pacific ocean http://www.windows.ucar.edu/tour/link=/earth/Water/images/salinity_big_gif_image.html&edu=high The more orange, the higher salinity
September 12, 2006

COMPUTER VIRUS..
Can you help me find out any information about this address? My security program identified it as a virus and promptly removed it. Can you help me identify it? ADW_WEBSEARCH.AS http://answers.yahoo.com/question/index?qid=20060801013521AAUqfpo STay away from porn sites, this ...
August 11, 2006

math
The length of a rectangle is 5 in. more than twice its width.? How do I find the width of the rectangle. duplicate post Divide the length by 2 it's going to be a decimal
July 26, 2006

math
The length of a rectangle is 5 in. more than twice its width.? How do I find the width of the rectangle. The length = (2 x width) + 5 inches. Do you have any other information about the rectangle such as the area or the perimeter. I don't think there is enough information ...
July 26, 2006

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