1. Algebra

    Why can a subtraction problem be rewritten as an additional problem without changing the outcome? Give a real-world scenario where this might be modeled.

    asked by Rima on August 25, 2015
  2. reading

    what is the central problem the main character has? What is one event that leads to the problem? Island of the blue dolphins by scott o'dell novel

    asked by nashali rivera on August 5, 2009
  3. Math

    I checked the problem but I didn't understand the answer how could you do?, because what happened with the fractions? Estimate the result of the following problem as a whole number: 4 1/43+2 15/16 -1 24/26+ 5 11/12 -3 3/61 Can you explain me, please....?

    asked by Sha on January 20, 2010
  4. Math

    A Marathon runner runs 10 1/2 miles in 2 hrs. What is her rate? Write an expression to represent the problem. Solve the problem.

    asked by Amy on January 11, 2017
  5. education

    How does this problem create a barrier for creating strong and healthy children in this country? problem-transportation need someone to explain and examples please.

    asked by nina on May 11, 2016
  6. Math

    No, I'm sure the problem is written like this: [(3a^3-27a)/(2a^2+13a-7)]/[9a^2/4a^2-1)] And to divide you multiply by the reciprocal. So i still don't get the problem I also know to factor, but I'm stil confused.

    asked by David on August 7, 2008
  7. Math 3

    graphing log functions for y=log12^x I don't have a calculator for this and I would like to know how to work this problem on paper so I can graph it to my chart. Can someone please help me with this problem?

    asked by Brandon on October 20, 2010
  8. accounting

    Write a word problem involving a discounted price. Describe the situation and pose the question, but DO NOT SOLVE the problem.

    asked by catrina on January 29, 2011
  9. math,algebra

    Can someone help me with this problem I don't understand what to really do or even how to graph them I show what i have so far. Directions: Solve each of the following systems of linear inequalities graphically. Problem:

    asked by jasmine20 on January 2, 2007
  10. English

    A: Can you wrap it, please? It's a gift for my son. B: No problem. In this short dialogues, what other expressions can we use instead of 'No problem'? Of coures. Sure. Can we use 'Sure thing.'? And some other exxpressions would be _______.

    asked by John on October 1, 2008
  11. Physics

    Which of the following statements for magnetism are true? (Give ALL correct answers) A) B does work on a charge only when the charge has a velocity component perpendicular to B. B) B acts only on charges at rest. C) B does work on a charge only when the

    asked by Richie on October 6, 2007
  12. math

    Find the cost of buying 4 dozen of exercise books at sh 6000 per dozen,a half dozen of pencil at sh 2050 per dozen,5 dozen rulers at sh 3600 per dozen #i need anyone to help me please# and in case someone has such type of questions,i am kindly need for

    asked by kelvin on February 23, 2017
  13. Math

    A farmer was taking her eggs but they all fell on the floor. She didn't know how many eggs she had. But then she remembers when she put them in groups of two, there was one egg left over. When she put them in groups of three, there was also one egg left

    asked by Sam on September 16, 2006
  14. math

    If A, then B is equivalent to If not B, then not A Not (A and B) is equivalent to not A OR not B Not (A or B) is equivalent to not A AND not B Can you give an equivalent statement to 1. If an Iowa farmer does not grow corn or beans, then he grows alfalfa.

    asked by Pat on September 9, 2012
  15. Physics C

    A rifle is aimed horizontally at a target 100 ft away. The bullet hits the target .78in below the aiming point. a) What is the bullet's time of flight? b)What is its muzzle velocity? The answers should be a) 63 m/s b) 1.6 X 10 exponent 3 ft/s I don't know

    asked by Layla on November 18, 2014
  16. science

    At a construction site a pipe wrench struck the ground wiht a speed of 24 m/s. a) From what height was it inadvertently fropped? b) How long was it falling? for a) the book said it was 29.4m and for b) it was 2.4s but I keep on getting the wrong answers.

    asked by ben on September 11, 2006
  17. Math

    a deck of cards haa 52 cards. in it has 4 of {aces,2,4,3,4,5,6,7,8,9,10,queens,kings,and jacks well you know} what is the probability of getting 4 aces at a time? express your answers as a common fraction. ps. the answers 4/52 or simplfied is not the

    asked by Cindy on November 15, 2010
  18. business math-73

    Use the Present Value Table on page 358 of your text to compute the present value (principal) for an investment with a compound amount of $20,000, a 30-month term of investment, and a 14% nominal interest rate compounded semiannually. (Points : 2.5)

    asked by Minnie on October 5, 2013
  19. cjs/210

    Can someone help me find a website to find the answers to the following questions? Examples of technology used in policing and how technology enhances or detracts from police organizations’ ability to function Examples of less-than-lethal weapons and how

    asked by Meka S on July 17, 2012
  20. Shakespeare

    I am trying to find an example of a paraphrase in Romeo and Juliet. I know that it is a restatement by another character but can not find where this occurs. Would someone please help me? Thank YOu.

    asked by Ian on July 22, 2010
  21. Economics

    What type of labor occurs in Kenya? What percentage of it is physical labor, mental, other? Thanks

    asked by Anonymous on November 12, 2012
  22. Chemistry- Acid-base titration

    The indicated endpoint of an acid-base titration seldom occurs at a ph of 7. what determines the ph of the endpoint??

    asked by David on April 24, 2013
  23. Osmosis

    What is concave plasmolysis and what is convex plasmolysis. Please don't just tell me that one is irreversable and the other is usually reversable. I'd like to know what actually occurs.

    asked by Anonymous on February 5, 2011
  24. MATH

    How do i solve the pair of simultaneous equations y=4-2x y=2x^2-3x+1 ?? how do i find minimum value of 2x^2-3x+1 and the value of x for which the minimum occurs???

    asked by Aaliyah on June 17, 2009
  25. Probability

    The probability that an event A occurs is P(A) = 0.3 . The event B is independent of A and P(B) = 0.4 . a) Calculate P(A or B or both occur) . Thanks in advance for the help!

    asked by Autumn on November 6, 2018
  26. Chemistry

    What chemical occurs to the red cabbage red for acids and blue for bases.

    asked by jason on March 9, 2016
  27. math

    After years of teaching, I can say (with 100% made up certainty) that the average number of questions the typical student can complete per minute is 5.  If I choose any student at random (I'm looking at you), what is the probability that yo...er that

    asked by josh on October 12, 2017
  28. Math

    What is the difference between "Give your answer correct to two decimal places." and "Round your answers to two decimal places." ?? Are they the same thing or do the answers differ?

    asked by George on September 12, 2016
  29. Social studies?

    Please ignore my previous post. I prematurely hit the enter key. I've been watching this board all day, waiting for someone to answer my physics question (no one has yet. sigh.) I just have to say Ms. Sue is my hero. She consistently answers almost every

    asked by Anastasia Beaverhausen on August 15, 2007
  30. drbob222 math,correction

    i made some corrections for the previous postage can you check those when you get a chance please. Also for this one: my options of answers are: A)2y + 6/3 B)3x- 6 /2 C)2 + 2y D)2/3y + 6 Directions: Solve for x: 3x - 2y =6 3x - 2y = 6 +2y +2y 3x = 6 +2y --

    asked by jasmine20 on January 11, 2007
  31. Business Math

    Find the amount of the principal on a loan at 6% interest for 274 days if the interest was $68.50, using the ordinary interest method. (Round to the nearest whole dollar amount)

    asked by JJ on November 3, 2013
  32. math

    Abbi invested $1,000 in a certificate of deposit with a simple interest rate of 4%. Find the interest earned in 8 years. Then find the total of principal plus interest.

    asked by new on February 12, 2018
  33. algebra

    Abbi invested $1,200 in a certificate of deposit with a simple interest rate of 2%. Find the interest earned in 9 years. Then find the total of principal plus interest.

    asked by breanna on May 27, 2011
  34. Algebra

    Abbi invested $1,500 in a certificate of deposit with a simple interest rate of 4%. Find the interest earned in 6 years. Then find the total of principal plus interest.

    asked by Yaz on March 2, 2015
  35. Math

    you have a loan for $150,000 @ 5% on a 30 yr mortgage. You plan to pay off your loan in 10 yrs, Do you want your loan to be figured using the "Rule of 78" or the "Unpaid Principal Balance Rule" please help if possible Thanks in advanced

    asked by lost!!!! any other answer on May 27, 2012
  36. math

    Abbi invested $1,000 in a certificate of deposit with a simple interest rate of 3%. Find the interest earned in 6 years. Then find the total of principal plus interest.

    asked by urgent on March 11, 2018
  37. Math

    Amy's school is made up of 524 students. The principal gave each student 3 pencils. Amy says 1,048 pencils were handed out. Is Amy's answer reasonable? Why or why not?

    asked by Cons on June 25, 2017
  38. business

    In calculating the bank discount when discounting an interest-bearing note, which one of the following is not used in the calculation? A. Discount period B. Bank discount rate C. Principal proceeds B is my answer

    asked by debbie on February 21, 2016
  39. English

    1. Can people send letters to the people on Dongdo? Yes, they do. There is a postbox on Dongdo. 2. When was Dokdo first recorded as part of Korea? It was first recorded as part of Korea in the 500s. 3. What is the temperature on Dokdo? It is around 12 C.

    asked by rfvv on November 9, 2016
  40. Calc

    Why is it false that F'(x) = G'(x) on the interval [a,b], then F(b) -f(a) = G(b)- G(a)?

    asked by ian on November 16, 2016
  41. fds

    Which of the following self-concepts do you think is false?

    asked by rwt on April 11, 2016
  42. human reations

    Another name for false productivity is

    asked by correana on April 28, 2010
  43. math

    if x=-2 and y=2, which of the following is false: (a) (x) is greater than 1 (y) (b) (x) = (y) (c) (y) is less than 1 (d) (x) = y

    asked by Angel on March 5, 2015
  44. math2

    Which statement is false? a ¡ô {a, b, c} ¨ª ¡ø {a, b, c} ¨ª ¡ö {a, b, c} ¨ª ¡ô {a, b, c}

    asked by anonymous on June 19, 2011
  45. Chemistry

    Consider the following thermochemical equation: CH4(g) + I2(g) --> CH3I(g) + HI(g) DH = +23 kJ What energy change occurs when 1.6 mol of CH4 reacts?

    asked by Nisah on September 17, 2012
  46. calculus

    f(x) = ln(ln(lnx)) has the domain of (e, infinity). I am not sure how this occurs however. I know in the case of ln x, x must be greater than 0. However where does e come from. e is the base of log in the case of ln, but something is just not clicking for

    asked by Joshua on October 16, 2013
  47. Int. science

    The creation of graphs usually occurs during _____. data analysis data collection observation questioning I think it might be B

    asked by Mclovin on October 2, 2014
  48. science

    If you watch a movie scene in which a loud explosion occurs in the space. What do you conclude about the accuracy of the scene?

    asked by raquel on May 14, 2012
  49. Physics

    *I am lost on a bunch of different problems, and this is one of them. Please note that I am NOT asking for final answers, just some guidance so that I can figure out how to do the problem!!! I know that a lot of times on this site it is commented that we

    asked by Justin on October 8, 2006
  50. Environmental Conservation

    What are the loopholes in blindly assuming that Traditional Ecological Knowledge (TEK) is the most complete knowledge for effective conservation? What are the possibilities of linking traditional knowledge with scientific methods to help in conservation

    asked by Ana on August 18, 2015
  51. Rates

    Guys, how much would you rate this website? From 1-10. Do you feel like others are helping you with your questions? Remember that we don't solve for you. We explain the situation you are in and then you solve it on your own. This website's caption is

    asked by Light Bulb on January 21, 2017
  52. maximum and minimum problems when function unknown

    Hi, can anyone please help me with this problem, i have no idea what to do! The question is: a window frame is in the shape of a semicircle joined to a rectangle. Find the macimum area of a window using 300 cm of framework. i can usually solve these sorts

    asked by elle on May 21, 2007
  53. Calculus Help

    The deal your assistant signs calls for the sale of a minimum of 260 chairs and up to 410 chairs. The price will be $88 per chair if only 260 chairs are bought, but will be discounted by $0.2 per chair (on the entire order) for every chair ordered in

    asked by Anonymous on July 15, 2014
  54. Science 7R - Homework Check

    1. List 4 reasons biologists use scientific names instead of common names in their communications. Answer 1. Scientific names help scientists aviod errors in communication. 2. Organisms with similar evolutionary histories are classified together, 3. The

    asked by Laruen on January 26, 2012
  55. Quantitative methods

    State Bank made a loan at 12% interest for 360 days. If the amount of interest was $934.20, use the ordinary interest method to find the amount of principal borrowed.

    asked by Richard Zimmerman on June 15, 2017
  56. Math

    Someone loaned me $20.00 in 1962 without quoting an interest rate. Using whatever the market interest rate was at that time, how much money would I owe in 2013 including principal and interest, straight and compounded.

    asked by Bee on December 22, 2013
  57. Math - Pre Algebra

    Simple and Compound Interest Find the simple interest. principal= $870 interest rate= 6% time= 9 months Please help me I need the answer for tommorow.

    asked by Tanisha on April 13, 2009
  58. National Government

    The principal powers of Congress include all except the power of the purse. the power to declare war. implied powers. x the power to hire generals.

    asked by Shirley on January 17, 2015
  59. math

    Using the formula, compute the true annual interest rate. Loan amount = $9,500 Monthly payments = $227.50 Time of loan contract = 5 years True annual interest rate (to the nearest tenth

    asked by wilton on May 2, 2014
  60. science

    I'm doing Science right now. I have the answers down for most of them but I'm not sure if I am right..... Can u pls help me and tell me if my answers r right? I suck at science :S 1.A 2.C 3.B 4.D 5.D 6.A 7.? 8.A 9.E 10.C 11.A 12.D 13.C 14.B 15.? 16.? 17.?

    asked by barnyard-gal on April 23, 2018
  61. Another Problem...PLz Help COunt Iblis

    Statements Reasons 1. 3x - 7 = -4 2. 3x - 7 + 7 = -4 + 7 3. 3x + 0 = -4 + 7 4. 3x + 0 = 3 5. 3x = 3 6. (1/3) 3x = 3 (1/3) 7. (1/3) 3x = 1 8. 1x = 1 9. x = 1 Is this problem about explaining each step? yeah like you have to write the property of each Are

    asked by Margie... on December 2, 2006
  62. math

    Using the formula, compute the true annual interest rate. Loan amount = $9,500 Monthly payments = $227.50 Time of loan contract = 5 years True annual interest rate (to the nearest tenth) = _____.

    asked by angel on May 16, 2016
  63. Science

    The geologic time scale originally ordered Earth's rocks by: A. absolute age B. relative age*** C. composition D. decades and centuries Where did scientists originally get their information to develop the geologic time scale? A. They collected and studied

    asked by Anonymous on November 12, 2015
  64. Multiplying Binomials

    You are planning a rectangular garden. Its length is twice its width. You want a walkway 2 ft wide around the garden. a. Write an expression for the area of the garden and walk. b. Write an expression for the area of the walk only. c. You have enough

    asked by Emily on January 14, 2007
  65. statistics

    Can someone work this out for me, so I can use as an example to do the other ones. Does it pay to study for an exam? The number of hours studied, x, is compared to the exam grade received, y. x 4 4 6 1 1 y 75 90 95 60 80 (a) Find the equation for the line

    asked by Sue on May 25, 2013
  66. English 10th grade

    "Well that's sculpture, making a '74 Toyota look like a '63 Corvette, only I didn't think of it that way...I was doing good work, and I was making good money." What is the purpose of the ellipsis (...)? I have it down to two possible answers: A. to prepare

    asked by Jim on December 3, 2014
  67. Economics

    A neoclassical theorist would use the formula Y = (w r * L s) + (I r * K s) to explain why a given person, John, is poor. a) According to the Neoclassical Theory, how would John decide how many hours of labor to supply? Draw an appropriate diagram to

    asked by Kim on October 19, 2006
  68. math

    I have a couple of math questions that i cant seem to get to work out. can someone help me please.? 1.) (x/x+6)-(6/x-6)=(x^2+36)/(x^2-36) 2.) (r-2)-(2-r)=0 3.) add (8/ty^2)+(9/t^2y) 4.)add (7/w)+(8/w^2) 5.)add ((r+10)/r)+(r/(r+10)) 6.) divide

    asked by jen on March 10, 2010
  69. Statistics

    According to a study by the Centers for Disease Control, the national mean hospital stay after childbirth is 2.1 days. Reviewing records at her own hospital, a hospital administrator calculates that the mean hospital stay for a random sample of 81 women

    asked by Michael on November 9, 2013
  70. Chemistry

    Hi! I am doing this chemistry lab of solubility curve of a solid investigation and this is for KCl. The purpose of this lab is to investigate the relationship between the solubility of potassium chloride and the temperature of its solution and to create a

    asked by Lori on February 18, 2013
  71. Chemistry

    Hi! I am doing this chemistry lab of solubility curve of a solid investigation and this is for KCl. The purpose of this lab is to investigate the relationship between the solubility of potassium chloride and the temperature of its solution and to create a

    asked by Lori on February 18, 2013
  72. Physics

    a) Is it true or wrong to say that components in series must have the same potential difference across them? Either yes or no explain it. Marks = 5 b) Is it true or wrong to say that magnetic force vectors on charged particles point in the same direction

    asked by Jiya on January 15, 2018
  73. Physics waves- check answers please

    I am not too sure if my answers are correct. Here are the questions: 1. A student standing near a brick wall claps her hands and hears the echo 0.250 s later. If the speed of sound was 340.0 m/s, how far from the wall was she? For this question I got 85 m.

    asked by Liz on April 21, 2014
  74. Mathematics

    1. 2/(2/3)+3/4/(4/5)= A. 1/5 B. 11/15 C. 47/60 D. 3 13/30 E. 12 2. If 2/5 of (2/3)/(5/6) is divided by 3/10, what is the resulting value? A. 1/15 B. 12/25 C. 8/15 D. 5/3 E. 125/27 3. Solve for x: 2x+3=5x-8 Are there two answers?

    asked by Anonymous on August 7, 2013
  75. Statistics

    The owner of the Finer Diner submitted a proposal to you in hopes of selling the business to you. His asking price is $250,000. Your financial institution advises that your monthly payment to finance that amount would be $1850.00. This is in addition to

    asked by Yvette on September 8, 2013
  76. chemistry

    Hey...how r u guys..thanks for helping me on my previous questions...can u help me solve two questions and check one? Thanks, all the questions are related to the info given: In some industrial processes, sodium chromate is added to water coolants. When

    asked by David on June 18, 2006
  77. Physics

    A bullet is dropped into a river from a very high bridge. At the same time, another bullet is fired from a gun straight down towards the water. If air resistance is negligible, the acceleration of the bullets just before they strike the water A. is greater

    asked by JC on September 10, 2006
  78. Chemistry

    A few questions...how many grams are in 48.7x10^24? I don't know how to convert atoms to grams. I can do moles to grams or moles to atoms, but not atoms to grams. My other problem is how do you convert moles to moles as in "how many moles of Cu2O are

    asked by Angeline on April 20, 2009
  79. statistics

    When red blood cells are counted using a certain electronic counter, the standard deviation (SD) of repeated counts of the same blood specimen is about .8% of the true value, and the distribution of repeated counts is approximately normal. For example,

    asked by Asmaa on December 12, 2009
  80. 11th grade math

    A box without a lid is constructed from a 38 inch by 38 inch piece of cardboard by cutting in. squares from each corner and folding up the sides. a) Determine the volume of the box as a function of the variable . b) Use a graphing calculator to approximate

    asked by Channing on January 21, 2010
  81. Health

    Vivian has been having abdominal pains for the past week. Now that she has started her new job and received her new health insurance, she is finally able to schedule an appointment with a doctor. As Vivian arrives in the waiting area of the new doctor’s

    asked by Brenda on September 7, 2008
  82. GOVERNMENT

    TWO QUESTIONS 1. Discuss 2 limitations the supreme court has imposed on the exercise of 1st Amendment rights to free speech? On what grounds have these limitations been justified? 2. What is due process of law? Describe 2 of the due process guarantees

    asked by JAYLEE on January 15, 2007
  83. statistics

    Your muffler factory claims to manufacture mufflers with a lifespan of more than 10000 miles of usage. A consumer group tests this claim at the 95 percent significance level, and finds that a sample of 64 mufflers have a mean lifespan of 10002 miles, with

    asked by lulu on August 23, 2014
  84. Math

    There is a football field and the length shows 120 yd and the width is 53 1/3 yd a. What are the dimensions of a football field in feet? b. A chalk line is placed around the perimeter of the football field. What is the length of this line in feet? c. About

    asked by Erik on October 18, 2016
  85. Calculus

    If an arrow is shot straight up from the surface of the moon with an initial velocity of 100 ft/s, its height in feet after t second is given by s(t)=(100t)−(83/100)(t^2). Use the limit definition of the derivative to find the answers to the following

    asked by Linda on June 8, 2013
  86. math

    PLEASE HELP I WOULD REALLY APPRECIATE IT! 1. Write an expression to describe a rule for the sequence. Then find the 100th term in the sequence. 3,10,17,24,31,38 ANSWERS: A) n+7;707 B) 7n:700 C) 7n-4;696 ** D) 6n-4;596 2. Write a rule for the function

    asked by anonymous on May 14, 2015
  87. Writeacher

    To earn the appreciation of honest critics and endure the betrayal of false friends; To follow the way your honest critics want you to trail and change their outlook about you. To suffer the pain your false friends give you from within, but don’t let it

    asked by Angelina on November 8, 2010
  88. math

    abbi invested 1,500 dollars in a certificate of deposit with a simple interest rate of 4 percent. find the interest earned in 6 years. then find the total of principal plus interest

    asked by iconiac and a granderz fan on January 31, 2012
  89. chemistry

    home / study / questions and answers / science / chemistry / a chemical engineer studying the properties of ... Question A chemical engineer studying the properties of fuels placed 1.760 g of a hydrocarbon in the bomb of a calorimeter and filled it with O2

    asked by patrick on October 23, 2015
  90. chemistry

    Calculate the standard cell potential for the glavanic cell in which the follwoing reactino occurs: 2I^-(aq) + Br2(l) ---> I2(s) + 2Br^-(aq)

    asked by Priya on April 22, 2008
  91. Physics

    The temperature of your skin is approximately 35C degrees. What is the wavelength at which the peak occurs in the radiation emitted from your skin?

    asked by Pardis on March 18, 2011
  92. physics

    A car is speeding up and has an instantaneous speed of 14.0 m/s when a stopwatch reads 9.0 s. It has a constant acceleration of 2.3 m/s2. (a) What change in speed occurs between t = 9.0 s and t = 12.2 s?

    asked by abbie on September 6, 2011
  93. chemistry

    Calculate the standard cell potentiqal for the galvanic cell in which the following reaction occurs: 2Na(s) + 2H20(l) --> H2(g) + 2NaOH(aq)

    asked by Priya on April 22, 2008
  94. Physics

    The temperature of your skin is approximately 35C degrees. What is the wavelength at which the peak occurs in the radiation emitted from your skin?

    asked by amy on March 18, 2011
  95. Physics

    The temperature of your skin is approximately 35C degrees. What is the wavelength at which the peak occurs in the radiation emitted from your skin?

    asked by Abby on March 22, 2011
  96. Science

    State four of the transformation of energy which occurs at a power station which uses coal as its fuel. Account for the energy losses.

    asked by UEW on November 3, 2017
  97. Chemistry 1115

    What is the chemical equation for the reaction that occurs when you add 0.1 M NaOH solution to the HC2H3O2-NaC2H3O2 buffer solution?

    asked by Marci on November 25, 2012
  98. chemistry

    How many liters of HCl are produced by the reaction of 5.7 L of hydrogen with an equal amount of chlorine? The reaction occurs at STP.

    asked by Alondra on December 6, 2011
  99. Science

    Hi if you know about static electricity can you explain how lightning strikes form? Can you think about when lightning occurs to formulate your answer to my question please. Thank you so much!!!

    asked by Rosey on January 14, 2016
  100. chemistry

    A mixture containing 0.0392 M A(g) and 0.0452 M B9g) is allowed to come to equilibrium at 300K. The reaction: 3A(g)+ 2B(g)=> C(g)+ D(g) occurs. At equilibrium, [C]=0.00128 M What is the value of Kc?

    asked by Jim on July 3, 2010