1. Algebra

    The assessment for this lesson is a discussion of a mathematical statement. You will have to determine if the statement is true or false. If it is false, you will explain your reasoning. For all real numbers a and b, 2a • b = a2 + b2

    asked by Just-A-Girl on August 31, 2018
  2. Physics/Math

    Given two vectors, a and b, such that a + b = a - b, find the magnitude of b. Consider the equation a + b = a - b to be n vector notation and both a and b have components. Subtract the a vector from both sides. You are left with b = -b That can only be

    asked by COFFEE on February 18, 2007
  3. Geometry

    Determine whether the conjencture is true or false. Give counter example is false. Given: two angles are supplementary. Conjecture: the angles form a linear pair.

    asked by Britney on September 16, 2015
  4. Calculus

    Use a graphing calculator to graph f(x)=(2x^2-8)/(x^2-6) and then select the response which is true a) f increases without bound b) f has no tangent line c) f has a horizontal tangent line d) none of these responses

    asked by Alice on December 20, 2018
  5. statistics

    average commuting distance 10.9 miles which is also the mean of a sample of 300 commuters. Sample sd is 6.2 miles . Estimate the true mean using 99% confidence please.

    asked by peter on November 13, 2013
  6. Math

    If you can measure the length and width of a rectangle correct within .1cm then the calculateday area will be correct .1cm as well. Is this true or false?

    asked by Erika on November 18, 2016
  7. biology

    The offspinf of true-breeding parents are called the: a) F1 generation b) f2 generation c) dominant offspring d) recessive offspring I know its not c or d so that leaves me with a, or b.

    asked by christina on January 20, 2010
  8. statistics

    On average, a sample of n=100 scores will provide a better estimate of the population mean than would be obtained from a sample of n=50 scores. (True or False)

    asked by Anonymous on July 5, 2011
  9. Math please

    The HCF of the smallest composite number and the smallest prime number is 1.is this statement is true or false.give reason.please

    asked by Abhishek kumar sahi on August 4, 2011
  10. epic

    A copper penny has a mass of about 4grams. A copper kettle has a mass of about 400 grams. What is true about the density of these two objects?

    asked by lynn on November 20, 2012
  11. Maths

    if 0

    asked by T_om on April 11, 2007
  12. Math help please

    A statement Sn about the positive integers is given. Write statements S1, S2, and S3, and show that each of these statements is true. Sn:   2 is a factor of n2 + 7n Could you please show your work? I want to know how to solve.

    asked by Hello on March 7, 2016
  13. statistics

    True or False; A good choice for the number of class groups to use in constructing frequency distribution is to have at least 5 but not more than 15 class groups.

    asked by iyra on February 5, 2010
  14. math

    Given p is false, q is true, and r is false, find the truth value of the statementShow step by step work. Use keyboard shortcuts of --àfor →, < --- > for→, ↔, v for V, and˄For ˄.

    asked by kim on January 9, 2012
  15. Physics

    True or false?equal masses of two different gases placed in containers of equal volume at equal temperature must exert equal pressures

    asked by John on January 21, 2013
  16. Statistics

    True or False The mean for a sample of n = 4 scores has a standard error of 5 points. This sample was selected from a population with a standard deviation of ċ = 20.

    asked by Lyndyc on December 12, 2013
  17. Algebra

    I'm not getting it. I've tried to re-read the notes but I'm still confused. Label each statement as "true" or "false". If "false" correct the underlined portion. 1) If *|n+9| _ 4 and n +9_60 then *-3

    asked by ANdy on September 29, 2014
  18. Legal

    Under the legal definition of Fructus Industrials is it true that "Minerals in the Soil" would not fall under this? It would in fact, fall under Fructus Naturales?

    asked by Wendy on March 30, 2008
  19. Geometry

    Is this true or false? Two similar hexagons have area 36 square inches and 64 square inches. The ratio of a pair of corresponding sides is 9/16.

    asked by Kaley on May 17, 2010
  20. science

    The moon moves slightly during the exploration animation because the moon rotates around Earth as Earth revolves. True **** False

    asked by moshimonsterssssss on December 14, 2018
  21. Chemistry

    True or false? Hydrogen bonds between water molecules are comparable in strength to hydrogen-carbon covalent bonds?

    asked by Christina on November 12, 2009
  22. Grammar

    Is this true or false? When a the subject of sentence has 2 or more nouns or pronouns connected by “and,” the subject is singular and requires a singular verb.

    asked by Cindy on June 2, 2011
  23. Geometry

    Write the if-then statement that follows from the pair of true statements If I go to the movie, then I will stay up late If I stay up late, then I will be tired tomorrow

    asked by Leslie on December 5, 2012
  24. biology

    The offspinf of true-breeding parents are called the: a) F1 generation b) f2 generation c) dominant offspring d) recessive offspring I know its not c or d so that leaves me with a, or b.

    asked by christina on January 20, 2010
  25. Math

    Which of the following is TRUE about the line through the points (–1, 4) and (–1, 2)? Please EXPLAIN/SHOW WORK. A. The slope is undefined B. The slope is negative C. The slope is 0 D. The slope is positive

    asked by Carmin on June 24, 2009
  26. Anatomy

    TRUE or False: atrial systole is responsible for "most" of venous return. wouldn't this be false? I was thinking it should say ventricular systole instead, but I'm not sure. Help?

    asked by Jamie on April 28, 2015
  27. P.E

    During adolescence, your self-esteem may influence you to choose other friends or reject the friends you've had for years? True False Is the answer False?

    asked by Gwen on August 26, 2014
  28. math

    A student claims that to divide a number with the units digit 0 by 10, she just crosses out the 0 to get the answer. She wants to know if this is always true and why and if the 0 has to be the units digit. How do you respond?

    asked by Kali G on September 13, 2014
  29. US Government

    In the beginning of our nation seats were reapportioned after the first three years, but today we reapportion seats in the House every 10 years. A) True B) False

    asked by Casey on July 12, 2014
  30. italian

    I suppose this will sound wierd. Is it true that Italy, (if vampires are real) is where vampires were "founded" or in other words the "base" of vampires? what do you think? Do you believe in vampires?

    asked by i&#9829;zee on April 1, 2012
  31. Science

    True or false A spurt if blodd flowing through arteries makes the arteries CONTRACT? if false what is the correct word?

    asked by Please Help on December 1, 2010
  32. Science

    To become more stable an atom that has two electrons in its outer energy level will gain two electrons A.) True B.) False That false correct?

    asked by Megan on December 8, 2016
  33. Math

    The area of a triangle is 4 times the area of the smaller triangle formed by joining the nidpoints of two sides True or false

    asked by Silva on January 14, 2018
  34. UOP

    5) In a 95% Confidence Interval, the true mean has what chance of falling between the Lower Limit and Upper Limits of the calculated confidence interval? A. .90 B. 95% C. .05 D. 5%

    asked by Linda on April 13, 2013
  35. Chemistry

    Is this true or false In general, the electronegativiy values of nonmetallic elements are greater than the electronegativity values of mettallic elements. yes

    asked by Dennis on January 3, 2007
  36. "The Dream Come True from The Tiger of the Snows"

    "The Dream Comes True from The Tiger of the Snows" by Tenzing Norgay. 1. Why do you think Norgay is so concerned with the "prestige of Everest"? 2. What does he mean by "Everest and the truth"?

    asked by Victoria on August 30, 2014
  37. Geometry

    The lengths of the sides of a triangle are 3x, 5x – 12, and x + 20. Find the value of x so that the triangle is isosceles. Can somebody show me a step-by-step process of how to get the answer(s) please? I need it:) I also saw that x could = 8, 10, and 6.

    asked by SkatingDJ on December 8, 2015
  38. chem

    Is the following true or false? The actual size of a measurement multiplied by a conversion factor remains the same, because the measurement being converted is multiplied by 1.

    asked by ash on June 11, 2010
  39. American Literature

    According to Langston Hughes in "The Negro Artist and the Racial Mountain, what is the "mountain standing in the way of any true Negro art in America"?

    asked by help on February 25, 2012
  40. Grammar

    If the word “very” or an adverb that ends in “ly” is part of your compound modifier, you do not use a hyphen in the compound modifier. A) True B) False I answered A:)

    asked by Marie on November 27, 2012
  41. Statistics

    A survey of 90 families showed that 40 owned at least one gun. Find the 95% confidence interval of the true proportion of families who own at least one gun. Example

    asked by Jodene on June 17, 2013
  42. algebra

    When I subsitute 5x+3 into the equation I get x=1/5 and y=2 is this correct? Try plugging in your final values for x and y into both of the original equations. If and only if the equations are true, then your answers are correct.

    asked by Tony on March 20, 2007


    asked by claire on April 22, 2008
  44. science

    To find acceleration, subtract the final velocity from the initial velocity and divide by the time. true false I think this is false...?

    asked by Cassie on March 11, 2013
  45. Physics

    The frequency of the wave can be changed by changing the frequency at which the waves are generated. True or false My work I think the answer is false

    asked by Hope on November 23, 2014
  46. Chemistry

    Say true or false. (1)The end point of titration attend on equivalent point. (2)All exothermic process are spontaneous process.

    asked by Chemo on January 27, 2012
  47. Grammar

    The patient's first visit, to the office, was for lower back pain. True False Answer: False no need for comma after visit.

    asked by Leslie on May 10, 2011
  48. economics

    Suppose the president is attempting to decide whether the federal gov should spend more research to find a cure for heart disease. How should policy makers determine the amount of money that should be allocated for research curing heart disease? they

    asked by jamma on September 21, 2012
  49. World history/ Latin America

    Check my answers please?? i have a star by my answer. 1. The policy by which strong nations extend their control and influence over weaker territories is called? Socialism Imperialism Populism 2. This theory justified the use of racial, national and

    asked by charlie on January 17, 2016
  50. Stats

    A professor believes that all Thursday sections are cursed and will always score lower on tests compared to Monday sections. To tests this he collects samples of test scores from these two sections. For Monday's section, the mean test score was 60, the

    asked by Luis on April 15, 2015
  51. Math

    After sales tax is added the total cost of 58.00 dollars purchade is 61.48 dollars What is the sales tax rate on the purchase? The bill at a restaurant is $59.29. Estimate the amount to leave for a tip of 15% The average snowfall each winter at a ski

    asked by Ryan on March 5, 2013
  52. psychology please revise

    Question How accurately do you think these exercises evaluate self-concept and self-esteem? How do self-concept and self-esteem influence your self-identity? How do self-concept, self-esteem, and self-identity differ? When it comes to accuracy, this

    asked by rose- Ms. sue on May 6, 2008
  53. anatomy physiology/check please

    Muscular dysgenesis or dysgeny is a lethal, recessive, genetic disease of mice that is caused by a mutation in the mdg gene. Skeletal muscles from dysgenic mice are paralyzed and the animals die shortly after birth. You are a research scientist interested

    asked by joseph on April 4, 2013
  54. Algebra

    A test consist of 15 multiple choice questions, 12 true-false questions and 10 fill in the bland questions. you got 8 questions wrong. what percent of the answers were correct?

    asked by Kevin on May 8, 2013
  55. Health

    Power is the key element that will enhance improvement of muscular strength and endurance. True or False My answer is False because I think there are other factors involved in endurance.

    asked by Faye on August 18, 2014
  56. Chemistry

    given the true molar masses of CuSO4 and H2O how could you find the exact formula of the hydraye from your experimental data. Find the Value of X in the Formula CuSO4x XH2O

    asked by Alex on April 20, 2010
  57. civics

    What must be true of a bill which has become law at a federal level? It must have been signed by the president. It must be in the best interest of all Americans. It must have passed both the House and the Senate. It must have been introduced into the

    asked by bcbd on January 3, 2017
  58. 8th grd chemistry:D

    which of these statements is true about an atom of chromium? (A) has more protons then electrons. (B) has fewer parts than an atom of iron. (C) has an atomic number of 51.996. (D) has more electrons than neutrons.

    asked by HELP ME PLEASE! on April 21, 2010
  59. Math

    Given angle theta is bigger than 0 and smaller than 360, determine two possible values of theta where each ration would be true. a) cos theta= 0.6951 b)sin theta= -0.7571

    asked by Emily on December 4, 2010
  60. Social Studies

    Which statement is true about Africa? (A) It has 2 large deserts. (B) Most most people live in southwest. (C) Most of the worlds people live their. (D) It is about 3 million square miles in size.

    asked by Emily on October 5, 2008
  61. math

    Hi, I had a question about exponential functions. If f(x)=ab to the x power, were a does not equal zero, b is greater than 0 and b does not equal one. Therefore if b=1/2, then the graph of the function never crosses the y-axis. What is the answer to this

    asked by Arianna on February 27, 2008
  62. Math

    To obtain the graph of y=-3sqrt(x+1) from the basic graph y=sqrt(x) the transformations are first a stretch vertically by 3, then a reflection vertically, followed by a shift left of one...true or false?

    asked by Kathy on August 5, 2011
  63. Music

    WHich of the following is true about a harpsichord? A. A harpsichord has a wide range of dynamics? B. It is still widely used today C. it has a very loud or very soft sound D. it creates sound by strings being plucked.

    asked by help plz ;-; on April 23, 2016
  64. Physical Science

    Most would expand, greater volume, lesser density. Density= mass/volume What would be true of the densities of most solids and liquids at a temperature higher than the quoted one?

    asked by bobpursley on January 9, 2007

    The burning of fossil fuels cause the earth to get warmer by putting carbon dioxide in the atmosphere and the carbon dioxide traps heat. MY GUESS: TRUE

    asked by Elena on December 22, 2014
  66. MATH

    a fraction with a denominater in the thousands will always have a decimal form with more decimal places than a fraction with a single-digit denominator. How would I determine if this statement is true or fals?

    asked by DEBBIE on April 14, 2010
  67. Economics

    Budget deficit is the amount of money the government borrows for one budget (1 year) and national debt is the sum of all government borrowing. A. True**** B. False

    asked by Nirvana ^_^))) on February 12, 2016
  68. science

    Please can someone help me with this question? By official definition, true wilderness is a roadless area with roads only built to its edges. Name some specific wilderness areas that fit this definition. Thanks!

    asked by Fred on October 13, 2007
  69. statistics

    A student takes a 20-question, true/false exam and guessed on each question. Find the probability of passing if the lowest passing grade is 15 correct out of 20.

    asked by Lori on September 26, 2010
  70. Calculus (Limits)

    Let f be defined as follows, where a does not = 0, f(x) = {(x^2 - 2a + a^2) / (x-a), if x does not = a 5, if x = a Which of the following are true about f? I. lim f(x) exists as x approaches a II. f(a) exists III. f(x) is continuous at x = a. A. None B. I,

    asked by Mishaka on October 22, 2011
  71. trig

    This identity means that translating a basic sine graph 3π/2 units to the right produces a basic cosine graph. True or False? sin(X-(3(pi)/2)) = cosX

    asked by Matt on September 12, 2013
  72. Chmeistry

    given the true molar masses of CuSO4 and H2O how could you find the exact formula of the hydraye from your experimental data. Find the Value of X in the Formula CuSO4x XH2O

    asked by Alex on April 19, 2010
  73. chem (significant figures)

    what are the errors in the measured values g=9.910 m/s^2 amd 9.805? true value 9.797 for 9.910 i got 0.113 and for 9.805 i got 0.008. i know i need for significant figures but i got three in my answer. so what do i do?

    asked by lou on February 7, 2012
  74. Calculus

    Let f be defined as follows, where a does not = 0, f(x) = {(x^2 - 2a + a^2) / (x-a), if x does not = a 5, if x = a Which of the following are true about f? I. lim f(x) exists as x approaches a II. f(a) exists III. f(x) is continuous at x = a. A. None B. I,

    asked by Mishaka on October 22, 2011
  75. horizontal tangent

    f(x) = sqrt(x^2 + 0.0001) At x = 0, which of the statements is true. a)f is increasing b)f is discontinuous c)f has a horizontal tangent d)f' is undefined Answer is c but why? f(x,y) = sqrt(x^2 + y) g(x,y) = df/dx = 1/(2*sqrt[x^2 + y]) * 2x = x/sqrt[x^2 +

    asked by Jen on December 9, 2006
  76. Interpersonal communication

    In interpersonal communication, when two people are talking face to face, the channel is the air (or auditory channel) around them that carries the message. (Points : 1) True False

    asked by Christopher on August 14, 2015
  77. Civics

    What must be true of a bill which has become law at a federal level? It must have been signed by the president It must be in the best interest of all Americans It must have passed both the house and the senate*** It must have been introduced into the

    asked by jeje on January 18, 2015
  78. Algebra

    The ordered pairs represent values for x and y. (1,1) is x =1 and y=1. Substitute these ordered pairs in the equations and evaluate to see if are true. Then, graph the points and line to find another solution.

    asked by Michelle on September 19, 2011
  79. Math

    Seth invested n dollars into an investment fund last year. After a period of one year, the value of his investment can be represented by the expression 0.84n. Select the true statement.

    asked by Cat on December 28, 2018
  80. English

    When a the subject of sentence has 2 or more nouns or pronouns connected by “or” or “nor,” the verb must agree with the noun or pronoun that appears closest to the verb in the sentence. Would this be true or false?

    asked by Diane on June 2, 2011
  81. maths

    Given is a quadrilateral ABCD,diagonals AC and BDare such that AO=BO=CO=DO=3cm,where Ois point of intersection of AC and BD then quadrilateral ABCD is a rectangle State true or false with reason

    asked by faizel on January 6, 2013
  82. Pre-Calc

    I have one more question I don't understand. It's a multiple choice question. I need to pick which of the following describes the steps involved in using the graph of y=3 cos x+3: a. Stretch the graph vertically by a factor of 3 and shift it to the left 3

    asked by sarah on May 5, 2007
  83. chemistry

    what do coefficents represent in a balanced equation? What would removing air from a sealed container do to the container? What does it mean that "like dissolves like"? Dissolving a solute in a solvent does what to the solven'ts freezing and boiling

    asked by Miley on June 10, 2008
  84. statistics

    A recent survey showed that among 675 randomly selected subjects who completed 4 years of college, 138 smoke and 537 do not smoke. Determine a 95% confidence interval for the true proportion of the given population that smokes.

    asked by Richelle on March 29, 2015
  85. Chemistry

    True or False? 1) Do Nuclear changes generally absorb more energy than chemical changes. 2) In Exothermic reactions, the reactants have more kinetic energy than the products. 3) If one molecule is involved the rate determining step is called first order.

    asked by Christian on July 24, 2010
  86. Ms. Sue PLZ HELP!!!(Civics)

    Which of the following is true about new foreign treaties? A.They prevent the formation of alliances with other countries. B.They do not have an effect on the domestic policies of a country. C.People could be worried whether they will affect their jobs and

    asked by Anonymous on May 8, 2015
  87. Medical biling and coding

    can someone please help with this question 16. Which of the following is true about the ICD-10-CM? A. An eighth character was added. B. There are combination diagnosis/symptom codes. C. There are limited injury codes. D. There's additional information

    asked by Tamika on March 13, 2013
  88. Health care please check answer

    Please check my answer thanks you for your help :) You are a Health information mangement professional and you are doing Medicare coding to help you assign reimbursement classifications to episodes of care you would use a fee schedule. True or False I said

    asked by in need of help on March 12, 2008
  89. English Language

    What is the error in this sentence? "Dr. Smith had argued that the cure for insomnia could be found in the seeds of apples, and although it was not true, he had made money giving lectures." This statement: A. Includes a shift in tense B. Includes a pronoun

    asked by Mishaka on October 27, 2011
  90. ss

    4. Which of the following was NOT true of the Battle at New Orleans? It was a decisive victory. It signaled a change in strategy for the British. It made future president Andrew Jackson a hero. It was fought after the peace agreement between the Americans

    asked by Anonymous on December 17, 2012
  91. Social Studies

    Which of the following was NOT true of the Battle of New Orleans? a. It was a decisive victory. b. It signaled a change in strategy for the British. c. It made future president Andrew Jackson a hero.* d. It was fought after the peace agreement between the

    asked by Mary on January 23, 2014
  92. novel

    "Though I tried to keep my head up, my eyes steady, it was not easy. They looked at me as if I were some loathsome thing. At the same time, the more objections they made, the more determined a I was to prove myself." What might this quote from chapter 13

    asked by Nicole on March 6, 2015
  93. Abnormal child psychology

    Which of the following is true regarding late starters A. Deviant behavior is never due to inadequate parental monitoring? B. As a group, they have more deviance than any other group C. They develop aggression only as adults D. There's less research

    asked by Dalia on June 13, 2017
  94. Management /economics

    I really don't understand some of the questions but i tried my best so my answers are : 1. A 2. E 3. A 4. B 5. E please check and help :) 1. The chance that a society can actually achieve full employment is ________ percent. Select one: A. 1 B. 75 C. 10 D.

    asked by Maya on October 1, 2016
  95. Management

    1. The chance that a society can actually achieve full employment is ________ percent. Select one: A. 1 B. 75 C. 10 D. 0 E. 45 2. Viral marketing can result in ________ when compared to traditional marketing. Select one: A. quicker consumer awareness and

    asked by Maya on October 1, 2016
  96. math

    test the series for convergence or divergence using the alternating series test the sum from n=1 to infinity of (-1)^n/(3n+1) I said it converges, is this true?

    asked by sarah on February 27, 2008
  97. pre-algerabra

    If dexters room is 10 wide and 12'6" long and in his drawing is 4 wide is it true or false if I doulbe the quantity I doulbe the other?

    asked by rose on January 27, 2017
  98. math

    Order -3, 5, 16 and -10 from least to greatest. Then order the same numbers from closest to zero to farthest from zero. Describe how your lists are similar. Would this be true if the numbers were -3, 5, -16, and -10.

    asked by Ali on September 4, 2014
  99. 4 grade mat

    write the missing number to make number sentence true. ______=(25/5)+(8*4) next on i don't get it what is (20 DIVIDE 4) dIVIDE =5

    asked by pat on November 11, 2009
  100. chemistry

    Given the chemcal equation:2 Ca+O2>2 CaO,if 2 moles of CaO are formed in this reaction,then 2 moles of O2 must have reacted. True or False?

    asked by Kimberly on April 15, 2013