Monday

December 22, 2014

December 22, 2014

Number of results: 8,975

**Geometry**

Prove that the tangents to a circle at the endpoints of a diameter are parallel. State what is given, what is to be proved, and your plan of proof. Then write a two-column proof. Hint draw a DIAGRAM with the points labeled. Can some one please check for me Given : ...
*July 5, 2007 by DANIELLE*

**geometry**

Can you prove ABCD is a parallelogram based on the given information? Explain. Given: x = 5, y = 4 Prove: ABCD is a parallelogram. A. The figure is a square. To be a parallelogram, it would have to have pairs of opposite congruent sides, not just congruent sides. B. The figure...
*March 6, 2011 by Kate*

**Geometry**

Hi, I don't have much time to turn this in. I think I got all the questions right, but I just want to be sure. I would appreciate some feedback! Thank you! 1. What is the formula for calculating the length of the diagonal of a right rectangular prism on the basis of the prism...
*February 25, 2010 by Emma*

**geometry**

1. An exterior angle of a regular polygon measures 30 degrees. What is the measure of an interior angle? 30 60 120 150 2. How many degrees are in each interior angle of a regular pentagon? 50 72 108 120 3. If all of the diagonals are drawn from a vertex of a hexagon, how many...
*November 30, 2010 by Justin*

**pls, help me out(proofreading)**

Hi. I wrote an essay about GATTACA, a movie which describes our future life. I tried to criticize the company's employment policy. pls, check my essay, focusing on the rationales. ---------------------------------------------- Due to the dramatic advances in genetic ...
*September 27, 2006 by yeulachet*

**Geometry**

1.Explain why we use the formula AB = |a - b| to find the distance of a segment. Include why you need to subtract and why you need to take the absolute value. The formula for finding vector AB is AB = b - a where a and b are the position vectors OA and OB respectively then the...
*July 10, 2013 by Unknown*

**about Engineering**

I'm taking Electronics and Communication Engineering...Can you help me pls...this is my problem=First day of school the teacher ask why did you choose this course? thanks;-) Maybe you chose it because of a natural curiosity and mathematical and analytical skills you may have ...
*June 5, 2007 by James*

**Geometry**

Donovan Ell was killed on a lonely road 2 miles from Trenton at 3:30 am on February 14th. Five men were arrested a week later and questioned. Each man made 4 simple statements of which 3 were absolutely true and only one of them was false. One of these 5 men killed Donovan. ...
*August 22, 2007 by Carol*

**geometry**

A plane is heading west at 200 mph. The wind is blowing S30°W at 25 mph. 1. What is the ground speed of the plane? 2. When you solve the triangle, what is the smallest angle? 3. What is the largest angle of the triangle? 4. What is the remaining angle? 5. What is the bearing ...
*December 6, 2011 by Cam*

**Geometry Help**

Out of 60 review questions I struggled with these ones. Someone please help!! 1.) The length of one side of a regular polygon is half the length of a similar polygon. What is the ratio of their areas? a.)1/2 b.)1/4 c.)1 2.)A patchwork quilt is made up of two different sized ...
*June 12, 2010 by Ariel*

**Geometry **

Which of these is a valid conclusion? Answer A. All sergeants clear a fitness test. Harry has cleared a fitness test. Therefore, Harry is a sergeant. B. All sergeants clear a fitness test. Harry has not cleared a fitness test. Therefore, Harry is not a sergeant. C. All ...
*April 2, 2012 by Anonymous*

**Physics**

What is the energy from a hollow cylinder of surface charge density sigma, radius R and charge q? Energy? DO you mean E, the electric field intensity? If you mean Energy, it is an odd question, but the answer is that it is the work it took to put the charge q on the surface. ...
*October 23, 2006 by Mary*

**geometry**

Hello I have an assignment were I have to answer the following questions. I have posted the questions and their answers below can someone please read over them and see if what I wrote is correct and if it is not how do I fix it? Thank You ! 1.Who was Blaise Pascal and how did ...
*August 19, 2011 by need help *

**English Pls Ms. Sue help me by checking my work**

Please replace the incorrect words with correct words in the following sentences using AP Style. There may be more than one error per sentence; all sentences contain at least one error. Use correct AP style, punctuation, grammar and spelling errors.) 11. Original: More than ...
*June 10, 2013 by Mary 2*

**English Pls Writeacher Help me by checking my work**

Please replace the incorrect words with correct words in the following sentences using AP Style. There may be more than one error per sentence; all sentences contain at least one error. Use correct AP style, punctuation, grammar and spelling errors.) 1. Original: California’s ...
*June 10, 2013 by Mary*

**chemistry**

i am supposed to explain the order of boiling points from intramolecular forces. the order i ended up coming up with was this: diethyl ether 34.6 degrees C hexane 69 ethanol 78.3 pyridine 115.2 acetic acid 117.9 octane 126 I know all of them have -London/Van der Waal forces, ...
*October 31, 2006 by argh*

**algebra**

A bicyclist rode into the country for 5hr. In returning her speed was 5 mi/h faster and the trip took 4 hr. what was her speed each way? What equation would I use to solve this problem i have no idea Let V be her speed going out, so V+5 will be her speed coming back. Let the ...
*March 23, 2007 by rob*

**Geometry**

I had to fill out a chart stating the properties of certine shapes(parallelograms). Some of them i put to many properties please tell me witch ones i have wrong. The properties to select from: 1-Opposite sides are parallel (both pair) 2-Opposite sides are congruent 3-...
*April 26, 2007 by Roxxxxxxxxx*

**Math**

How do you write equations for perpendicular lines? I will assume you know how to find the equation of a line if you know the slope and a point on that line. The key thing to remember is: Two perpendicular lines have slopes that are opposite reciprocals of each other. e.g if ...
*July 22, 2007 by Zoe*

**math**

16) AB = 3.2cm BC = 8.4cm The area of the triangle ABC is 10cm². Calculate the perimeter and give the answer correct to 3 significant figures. 19) Bill said that the line y=6 cuts the curve x² + y² =25 at two points. a) By eliminating y, show that Bill is incorrect. b) By ...
*November 8, 2006 by ahh*

**Geometry**

A wooden board is placed so that it leans against a loading dock to provide a ramp. The board is supported by a metal beam perpendicular to the ramp and placed on a 1 ft. tall support. The bottom of the support is 9 feet from the point where the ramp meets the ground. The ...
*September 9, 2010 by Anna*

**Geometry**

1. In the formula -2x-y=7, what is the slope? 2. An isoceles trapezoid has____pair(s) of parallel sides. 3. Is a triangle with sides of 6,8, and 10, a right triangle? yes or no. 4.Find the area of the rectangle(30cm, 40cm,40cm. 5. Use factoring to simplify - V64 (2) 6. A ...
*April 15, 2010 by Patricia*

**Geometry**

1. An airplane is flying at 36,000 feet directly above Lincoln, Nebraska. A little later the plane is flying at 28,000 feet directly above Des Moines, Iowa, which is 160 miles from Lincoln. A.assuming a CONSTANT rate of descent, what was the angle of descent? B. What is the ...
*March 26, 2012 by Leah*

**Geometry**

I had to fill out a chart stating the properties of certine shapes(parallelograms). Some of them i put to many properties please tell me witch ones i have wrong. There are wrong properties listed for some shapes because My teacher said that I have some of them wrong. The ...
*April 30, 2007 by Roxxy*

**Math, Science, Writing, Language, Test Preparation**

I was wondering can I recieve website to help me prepare for vocabulary, geometry, chemistry, PSAT, SAT, and ACT Thanks Study skills are number one, as far as I can see. Subject areas are included in these sites, too: http://www.studygs.net/ http://www.d.umn.edu/kmc/student/...
*July 21, 2006 by Study Nut*

**geometry**

1. Find the area of the parallelogram. (1 point) 3,302 ft2 3,484 ft2 3,752 ft2 4,020 ft2 2. Find the area of the triangle. (1 point) 21.84 cm2 21.2 cm2 10.92 cm2 10.6 cm2 3. Jorge plans to paint a bedroom wall that is shaped like a trapezoid. The bottom edge of the wall is 22....
*March 16, 2013 by Adia*

**Physics**

A pitcher throws a curveball that reaches the catcher in 0.55 s. The ball curves because it is spinning at an average angular velocity of 335 rev/min (assumed constant) on its way to the catcher's mitt. What is the angular displacement of the baseball (in radians) as it ...
*March 13, 2007 by Mary*

**Geometry - Conditional Statements/Proof**

Rewire each statement as two if-then statements that are converses of each other. 18. Two angles are supplementary if and only if the sum of their measures is 180. 20. (x-4)(x+6) = 0 if and only if x = 4 or x = -6 22. Theorem 2-5 may also be worded in this way: "If alternate ...
*October 8, 2009 by James*

**Algebra**

If you have these three origins: (0,0) (0,952) (863,0) How do you find the last point where the two lines intersect? Would really appreciate the help. Thanks. Parker, I'm not quite sure what the question asks. Three origins? Is this standard analytic geometry we're doing? I ...
*July 12, 2006 by Parker*

**world geography**

the five classics, i am not sure what these are. they are related to chinese literature. but it doesnt list them in the section. please help. thanks Sun Su's: The Art Of War May be one This site lists and describes the Five Confucian Classics. http://www.wsu.edu:8001/~dee/...
*November 1, 2006 by Danelle*

**Math, Geometry and Physics**

An enemy ship is on the east side of a mountainous island. The enemy ship can maneuver to within 2500 meters of the 1800 meter high mountain peak and can shoot projectiles with an initial speed of 250m/sec. If western shoreline is horizontally 300 meters from the peak, what ...
*January 16, 2007 by Bob*

**ap chemistry**

Discuss briefly the relationship between the dipole moment of a molecule and the polar character of the bonds within it. WIth this as a basis, account for the difference between the dipole moments of CH2F2 and CF4. does anyone have any idea? the greater the dipole moment of a ...
*December 7, 2006 by someone*

**geometry**

The figure shows a partially completed set of steps to construct figure PQRS. The next step is to construct side RS of the figure so that side RS is congruent to side PQ and angle PQR is congruent to angle SRN. The chart shows the steps each of the four students took to draw ...
*January 29, 2013 by ricco latsonas*

**College Geometry**

In this assignment, you examine a process that links polygons and circles. You will reach some quantitative conclusions about their respective areas and the relationship between the two. As you know, a regular polygon has sides of equal length and angles that are the same. ...
*September 3, 2013 by Lisa*

**Algerbra 1**

1/3x + 5/6 = 2/9x - 1/3 How do I solve this to get the answer? For basic algebra you need to understand that we can add (or subtract) the same quantity from both sides without affecting the = sign. We can also multiply and divide (except by 0) both sides without affecting the...
*September 14, 2006 by Courtney*

**Maybe you know this one..**

Heyy, I posted this before but it kinda got pushed down and ignored, and I was hoping maybe DrBob might have an idea since no one else did! okay I have this question about chemistry and its driving me nuts. It feels like I am so close but am just missing something. The ...
*February 3, 2007 by Tracy*

**CHEMISTRY**

Post a New Question Current Questions Homework Help: Chemistry Posted by Anonymous on Thursday, November 14, 2013 at 8:45pm. CONTINUE>>>>>>>>>>> The enthalpy changes for two different hydrogenation reactions of C2H2 are: C2H2+H2---->C2H4 ...
*November 14, 2013 by Anonymous*

**World history; Check:P**

City States: 1,How does an empire differ from a city-state? A city-state is an independent country whose territory consists of a city which is not administered as part of another local government. An empire is a geographically extensive group of states and peoples united and ...
*January 18, 2013 by Victoria*

**Dr.Bob (thx) Check my work for this one pls**

What is the molar solubility of Sr3(AsO4)2 and the concentration of Sr^2+ and AsO4^-3 in a saturated solution at 25 deg Celsius? The Ksp is 1.3E-18. Show the balanced reaction. Below, I write M.S. (molecular solubility) 1)Sr3(AsO4)2<---> 3Sr^2+ + 2AsO4^-3 M.S. xmol/L 3x ...
*June 11, 2006 by Kizner*

**english**

This is a passage from Indian Education. I dont understand what to write for this question: Notice the similarities between the pairs of sentences composing paragraphs 29 and 31 and paragraphs 70 and 72, what point does Alexie make with the similarities? FIFTH GRADE 1. I ...
*February 7, 2009 by kayla*

**Math-Geometry**

Find the angle that the hr hands and the mins hand made when it at 10:00:45.67 so it 10olock 00 min and 45.67 sec and find the angles Show works it one of those clocks problem -thanks We're asked "Find the angle that the hr hands and the mins hand made when it at 10:00:45.67" ...
*September 16, 2006 by Bob*

**Geometry **

1. If ΔRST symbol ΔNPQ, then RT line is congruent to _____. (1 point) line NP line NQ line PQ line QP 2. Given RST NPQ, RT = 7x – 5, NQ = 5x + 11, find the length of RT and of NQ. (1 point) 8 51 40 56 3. Which of the following statements is true about the triangles ...
*December 5, 2013 by hi*

**geometry **

Given: QRST is a parallelogram. Prove: QRST is a square. Complete the proof below by choosing the reason for line number 2 and line number 6. Reason Statement 1. QRST is a parallelogram. Given 2. QRST is a rectangle 3. is a right angle Definition of a right angle. 4. ...
*January 5, 2012 by karrie*

**COLLEGE COURSE, CRITICAL THINKING**

We present this selection as an example of a fairly well-reasoned argumentative essay. There is more here than arguments—there’s some window dressing and you’ll probably find some slanters here and there as well. You should go through the selection and identify the issues, the...
*January 12, 2010 by mz.baby*

**computers**

The recursive algorithm of the 4th Section of the chapter "Computational Geometry" employs a trick of presorting, in which we maintain two arrays X and Y of the input points P sorted on coordinate x and y, respectively. The algorithm starts with sorting all the input points in...
*November 14, 2009 by roba*

**Chemistry**

Which is the higher density of polyethylene, linear or branched? Select the choice with the best accompanying explanation. Linear polyethylene is the higher density form, as the chains are able to pack better and partially crystallize, resulting in better packing and higher ...
*January 11, 2013 by c*

**math geometry project**

Design a dance floor with a mosaic pattern. • Classify triangles, use congruent triangles in real-life situations, find the areas of triangles and quadrilaterals. Investigation: You work for a construction company. One of your clients wants the company to build a 16 foot by 20...
*November 29, 2014 by Aayush*

**Geometry**

m∠1 = 6x and m∠3 = 120. Find the value of x for p to be parallel to q. The diagram is not to scale. *114 *126 *120 *20 Find the values of x, y, and z. The diagram is not to scale. (38*, 56*,19*,x*,z*,y*) *x = 86, y = 94, z = 67 *x = 67, y = 86, z = 94 *x = 67, y = ...
*November 12, 2010 by Anonymous*

**Algabra**

Landscape designers often use coordinate geometry and algebra as they help their clients. In many regions, landscape design is a growing field. With the increasing popularity of do-it-yourself television shows, however, many homeowners are becoming amateur landscape artists. ...
*November 25, 2009 by Isaac*

**additional mathematics...pls help!!**

Ang, Bakar and Chandran are friends and they have just graduated from a local university. Ang works in a company with a starting pay of RM2000 per month. Bakar is a sales executive whose income depends solely on the commission he receives. He earns a commission of RM1000 for ...
*June 27, 2007 by sherlyn*

**health**

help, check my answers pls!!! asap!! 1. The ability to perform a movement within a short period of time is known as (1 point) agility power reaction time speed 2. In order to do a backflip in the middle of his hip-hop dance routine, Terrance has to generate enough force for ...
*January 6, 2014 by TTR+S<3*

**Pre Calc**

I already asked this question and had some help, but I am still confused on a piece of it. I'm not sure what differentiate is. I understand how you got a and b, but I am confused with c. What is differentiate and how did you get the equation dA/dx = 72 - 6x^2 Question: Here I ...
*October 5, 2009 by MUFFY*

**Geometry and Discrete Mathematics (Proofs)**

Observe that the last two digits of 7^2 are 49, the last two digits of 7^3 are 43, the last two digits of 7^4 are 01, and the last two digits of 7^5 are 07. Prove that the last two digits of 7^201 are 07. 7^2 = ...49 7^3 = ...43 7^4 = ...01 7^5 = ...07 7^201 = ...07 Break 201 ...
*November 28, 2006 by Raj*

**MAT 116 Algebra 1A**

Appendix D Landscape Design Landscape designers often use coordinate geometry and algebra as they help their clients. In many regions, landscape design is a growing field. With the increasing popularity of do-it-yourself television shows, however, many homeowners are becoming ...
*May 26, 2008 by Shelly,k*

**Pre Calc To Reiny - Follow up on Pre-Calc Answer**

Pre-Calc - Follow-up for Reiny - MUFFY, Saturday, October 3, 2009 at 10:27pm I wasn't sure if you would notice my question since it is so much later so I re-sent this as a new question. Please let me know if I shouldn't do that. I understand how you got a and b, but I am ...
*October 3, 2009 by MUFFY*

**geometry**

For problems 7 and 8, find the magnitude and direction angle of the given vector. 7. <3, 4> A magnitude: 5; direction angle: 53.13° B magnitude: √ 5; direction angle: 53.13° C magnitude: √5; direction angle: 3.40° D magnitude: √5; direction angle: 0.80...
*December 14, 2011 by Cam*

**ALGEBRA**

Landscape Design Landscape designers often use coordinate geometry and algebra as they help their clients. In many regions, landscape design is a growing field. With the increasing popularity of do-it-yourself television shows, many homeowners are becoming amateur landscape ...
*August 21, 2010 by Julia*

**physics**

A load W=2 kN is applied vertically to joint C of truss ABCDE as indicated. You will use the method of joints to obtain the axial forces in the bars and reactions at the supports A, E . E4_1? All the bars in truss ABC have constant cross section and are made of a homogeneous ...
*July 2, 2014 by Mathro*

**Math**

Appendix D Landscape Design Landscape designers often use coordinate geometry and algebra as they help their clients. In many regions, landscape design is a growing field. With the increasing popularity of do-it-yourself television shows, many homeowners are becoming amateur ...
*June 6, 2010 by ryan*

**mechanical engineering**

A load W=2 kN is applied vertically to joint C of truss ABCDE as indicated. You will use the method of joints to obtain the axial forces in the bars and reactions at the supports A, E . E4_1? All the bars in truss ABC have constant cross section and are made of a homogeneous ...
*July 2, 2014 by Mathro*

**algebra**

Axia College Material Appendix D Landscape Design Landscape designers often use coordinate geometry and algebra as they help their clients. In many regions, landscape design is a growing field. With the increasing popularity of do-it-yourself television shows, however, many ...
*January 10, 2010 by compare and contrast two theories on the causation of crime*

**Geometry**

A carpenter is building a staircase using his knowledge of right angles. The steps have a horizontal landing and a vertical rise causing each step to be a right triangle cut out. Depending on the purpose, steps may be adjusted by the angle of elevation which determines the ...
*October 30, 2014 by Dana*

**math+ confused!**

okay the question is as follows: write the first three teerms of tn= 5(2)^ n-1. what is the value of tn/tn-3? I did not get I asked my teacher and he said: plug in n=1, n=2, n=3, to find t_1, t_2, t_3. plug in n-3 and n separately. then take the ratio of the terms. I am ...
*October 18, 2006 by eva!*

**geometry**

1. Initial point: (0, 0); Terminal point: (3, -4) A Lesson 13 B Lesson 13 C Lesson 13 D Lesson 13 E Lesson 13 F Lesson 13 2. Initial point: (3, 5); Terminal point: (-2, -1) A Lesson 13 B Lesson 13 C Lesson 13 D Lesson 13 E Lesson 13 F Lesson 13 In problems 3 and 4, let u = ...
*December 7, 2011 by Cam*

**geometry**

In problems 1 and 2, the initial point and the terminal point of a vector are given. Write the vector in component form. 1. Initial point: (0, 0); Terminal point: (3, -4) A Lesson 13 B Lesson 13 C Lesson 13 D Lesson 13 E Lesson 13 F Lesson 13 2. Initial point: (3, 5); Terminal...
*December 6, 2011 by Cam*

**Managerial Economics**

I'm not sure I see the light here....Can the economyst help me super size this?!?!?! Thanks! 2) When McDonald’s Corporation reduced its price of the Big Mac by 75% if customers also purchased french fries and a soft drink, the Wall Street Journal reported that the company was ...
*August 1, 2007 by Ed*

**Chemistry**

I am having trouble understanding dipole moments. I can't figure out why that a tetrahedral CF4 molecule, trigonal planar SO3 molecule and a octahedral H2SF4 molecule are non-polar while a H2CF2 is polar? I hope I explained that well and thanks! For CF4, think of it this way. ...
*January 21, 2007 by Aletha*

**Exam**

Hello I have exams coming up and I was wondering if any of you guys know where I can get some practice exam papers or questions that I can do or download from the internet. I am in year 11, high school, and I have exam on geometry and trigonometry, intro calculus, English and ...
*May 13, 2007 by Jarin*

**Math essay**

Can you please proofread my essay? My teacher is grading on accuracy, quality, correct spelling and grammer. The History of Mathematics As of today, there are plenty of new developments in the area of Mathematics. In at least some Mathematics courses, it doesn’t cross the mind...
*November 27, 2007 by Soly*

**English**

I don't understand E.L. Doctorow's essay "Why We Are Infidels". Please help me understand it, because I have to compare and contrast this essay with Salman Rushdie's "Imagine There's No Heaven." Thanks for the help! http://www.thenation.com/doc/20030526/doctorow Here it is, in...
*July 5, 2007 by Anonymous*

**Engineering**

The bar in the figure has constant cross sectional area A. The top third of the bar, of length L, is made of a material with mass density ρ and Young's modulus E. The bottom two thirds of the bar (length 2L) is made of a different material, with density ρ/2 and Young...
*May 23, 2013 by MAN*

**english**

Read the following paragraphs carefully and compare them. Paragraph #1 Since every person has only one opportunity to live each hour of his life, the time must be spent wisely. He should spend it thoughtfully. He should care what he does with his time. He should use good ...
*December 6, 2011 by mindy*

**COOP Exam?? (practice)**

Is there any online COOP exam I can practice to pass that COOP exam I'm taking (I'm applying to catholic high school. It's a private school). This what it will be on the exam: Test 1 Sequences This test measures the student’s ability to comprehend a rule or principle implicit ...
*April 20, 2013 by Laruen*

**geometry**

You have looked at it two times before. There are 30 questions worth 30 points. Part 1 Multiple Choice: Select the best answer from the choices provided. (Each question is worth one point) 1. Determine how many wheels are turning clockwise. 1 2 none 2. Determine how many ...
*June 23, 2009 by joe*

**math**

PROBLEM TYPE YOUR SOLUTIONS HERE Section 3.1 pp. 219-222 #18 Add. Write the answer in lowest terms. Section 3.1 pp. 219-222 #38 Evaluate the following. Write the answer in lowest terms. 9-3=13 13+ 7 = 16 Section 3.1 pp. 219-222 #44 44. Number problem. One task took 7 minutes (...
*January 8, 2009 by fay1985*

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