1. science

    I have to write a persuasive paragraph on the following question: What should be the job of a scientist?Pick one to argue: a) Create more synthetic substances. Fore example: synthetic elements, genetically modified food b) Study substances that naturally
  2. 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
  3. 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
  4. english

    Why do newspapers and magazines use difficult words in their articles? Thank you for using the Jiskha Homework Help. The best way to increase your vocabulary is by reading. When you encounter a word you do not know, look it up in a dictionary and make it
  5. history

    i'm writing an essay comparing indentured servants and slaves. can you just read what i have so far and correct errors in grammar and how I word my sentences. thank you Between the 16th and 18th centuries, cheap labor, agriculture and mercantilism ensured
  6. 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
  7. Science Help

    A projectile that is launched at 15 degrees and the landing height is the same as the launch position. If this is true, then at what other angle can the projectile be launch to achieve the same horizontal displacement?
  8. s v m latehar ( math)

    The maen and midean of 100 observation are 50 and 52 respectively. The value of largest obsrevation is100. It was later found that it is 110 not 100. Find true mean and midean
  9. English

    i need help with a question from this quote: "sometimes lifes most important lessons need to be literally staring us in the face befor we are able to recognise their true value" why do some lessons need to stare us in the face?
  10. Math

    Each letter in the equation below represents a different digit from the set {1,3,4,7,8}. Find the value of each letter to make the equation true. ADD +MAD _____ SUM
  11. Gen Chem

    Which of the following conditions MUST be true for the entropy of a pure solid to be zero? a) T must be 0 K b) The solid must be crystalline and not amorphous c)the solid must be perfectly ordered d) the solid form must be an element
  12. Math AP Calc

    Label each statement TRUE or FALSE. a. The sum of two one-to-one functions is one-to-one. b. The product of two one-to-one functions is one-to-one. c. If f is a one-to-one function and k is a real number (constant), then the function g(x)=k*f(x)is
  13. econ

    True of False? E=exchange rate Suppose E $/euros = 3/2 and E $/pounds = 2, and there is no trade friction, the no arbitrage condition implies that E pounds/euros = 2
  14. math

    Determine whether each statement is true or false. A chord that contains the center of the sphere is a diameter of the sphere. A tangent of a sphere is a line that intersects a sphere in exactly two points.

    If a pinch of flour is placed in water, does it form a coarse suspension, colloidal dispersion, or true solution? What about pepper? I thought both would be a coarse suspension
  16. science

    In science we are doing the Metric System and my teacher put done that if you move the decimal place to the right the value lowers. and if you move it to the left it rises. Is that true i always thought it was the other way around
  17. 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.
  18. Science Help

    A projectile is launched at 15 degrees and it's landing height is the same as the launch position. If this is true, then at what other angle can the projectile be launch to achieve the same horizontal displacement?
  19. College Math

    I am really struggling with this Fibonacci number problem. If the greates common factor of "m" and "n" is "r", then the greatest common factor of Fm and Fn is Fr. Show that this is true for m=6 and n=9. I am so confused
  20. econ

    True or False? E=exchange rate Suppose E$/euro = 3/2 and E$/pound = 2 and there is no trade friction, the no arbitrage condition implies that E pound/euro = 2
  21. One more Photography Question

    Sorry, I forgot to put this in my last question!! Shape is only a consideration in photographs of man made objects True or False I'm really confused on this one, but I would say.... False, right??
  22. math

    Purchase price of article = $5,555 Down payment = $555 Number of payments = 42 True annual interest rate=18% Monthly Payment= $
  23. math

    whats -2y+3(4-y)=12-5y? -2Y+(12-3Y)=12-5y -5Y+12=12-5Y 0=0 i do not like reading but now i am sleepy all day and need help with my reading homework as Maricela showed, the left side = right side. So it is an identity and true for any value of y you choose.
  24. Math

    A population with μ = 59 and s = 8 is standardized to create a new distribution with μ = 100 and s = 20. After the transformation, an individual receives a new score of X = 90. The original score for this individual was X = 51. True or False
  25. Algebra 2

    1. Write a polynomial in standard form that has solutions: 0, -2, 3 2. Write a trinomial that has a degree of 4 and a lead coefficient of -3 3. True of false: 3/x^2 is a polynomial expression
  26. math

    Line through (0,b) and (10,-5) is perpendicular to the line through (a,0) and (-6,-3). If all ordered pairs (a,b) which make the first sentence of this problem true are graphed, they all lie on a line. Find the equation of this line.
  27. dog behavior

    Please check my answer thanks True or False Robert Rescorla studied the effects of rewarding a dog for not jumping on people I said False
  28. Quantitative Analysis

    The circumstance where the Null Hypotheses is rejected when it is actually true is known as...? A. Type I Error B. Mundane realism C. Experimental incongruence D. Type II Error
  29. Economics

    Is it true that the underlying trend of growth in the economy is determined by the growth in the number of workers, the growth in the savings and investment rate, and the growth in productivity ?
  30. math

    True or False. A data set resulted in a regression equation of Y = 17.08 - 1.16x From the equation we can determine that the X variable is directly related to the Y variable.
  31. geometry

    If Quadrilateral QRST is a parallelogram, which is not necessarily true? a. Opposite angles are congruent. b. The diagonals bisect each other. c. Angles are four right angles. d. Consecutive angles are supplementary.
  32. physics

    Is it true or false that when a baseball player hits a home room, the baseball received a greater impulse from the bat than the bat did from the ball?
  33. science

    Tycho Brache came to the wrong conclusions about the motions of the planets; so all his years of work were? wasted. a) true b) false Just need to know if my answer or right or wrong. Thanks! :) false
  34. Science

    Could you make sure I'm correct? What is true of the work of all scientists? scientists ask testable questions and devise ways to answer those questions through experimentation or observation
  35. Algebra

    1. Classify the following number as rational or irrational: 4.1 rational? 2. True or False: The Associative Property allows you to change the order of terms in an expression. False? Thanks -MC
  36. statistics

    a test consists of 10 true or false questions followed by 10 multiple choice questions, each with 5 choices. How many ways can Faith mark her answer to this test?
  37. abnormal psychology

    Is this true or false Behavioral medicine and health psychology are concerned with reducing the stress of illness but not necessarily preventing the stress.
  38. math

    A baker measured the length of different loaves of bread. The interquartile range of a data set was 12 inches. Which statement is also true for the data set?
  39. physics

    Is it true or false that when a baseball player hits a home room, the baseball received a greater impulse from the bat than the bat did from the ball?
  40. 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
  41. biology

    Which of these statements concerning the centromere is NOT true? a. it appears to join dupicated DNAs b. It anchors proteins to DNA. c. Its position along the chromosome varies d. It is visible as a constriction on the chromosome. e. IT is where sister
  42. english

    . Use two commas around “extra information” in a sentence to show that it is not important to the meaning of that sentence if taken out. For example: “The hardware store down the street, which had been paved recently, is open until midnight five days
  43. Physical Edu

    Which of the following is NOT true concerning behavior change? a. Willpower is the most important factor in changing a new behavior. b. It is a learned skill. c. It involves conscious strategies. d. Having a reward system is helpful. e. Living in a
  44. Biology

    Which statement is not true regarding illness associated with malfunctioning cellular organelles? The illness _____ a. can result in a diverse set of sumptoms b. may impact multiple body systems c. is typically simple to diagnose d. may be lethal
  45. business

    The manager of Alco wants to establish the proportion of time that the stock clerks spend making price changes on previously marked merchandise. The manager wants a 98% confidence that the resulting estimate will be within 5% of the true value. What sample
  46. discrete math

    Let R be a relation "is located in" from set x of y of countries. state each the following in words and state whether the statement is true or false. a)(Bangi,Selangor) b)(Kota Bharu,Johor) c)(Miri,Sabah) d)(Pekan, Pahang)
  47. 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
  48. ersonal Dimensions of Education

    True or False... As a general rule, collective nouns- such as family, class, faculty, audience- take singular verbs. For example: This year the graduating class is having a beach party after the ceremony.
  49. bio

    why does 10 % Sodium Chloride Solution affect and kill Sarcina lutea but not Serratia marcescens Escherchia coli Bacillus subtilus Bacillus cerus? I am trying to find some evidence of why but can't. It is true though because I tested it in a lab.
  50. Algebra

    Give two examples of a real life situation where a straight line graph might be applicable and explain why you think this might be true. distance vs time under constant velocity overtime pay vs overtime hours worked.
  51. Statistics

    A random sample of state gasoline taxes is shown for 12 states. Use the data to estimate the true population mean gasoline tax with 90% confidence. Does your interval contain the national average of 0.21? assume normal distribution.
  52. Health

    1.The numbers of calories consumed should equal to the number of calories burned? True or false? 2.Which of the following factors that contribute to your weight do you have the least amount of control over? A.activity level B.peers C.body composition
  53. Stats-BOB PURSLEY Help, do you know this?

    Is there a rule to figure out if this is a true or false statement? A sample size of 900 is not large enough to conclude that the sampling distribution of p is a normal distribution, when the estimate of the population proportion is .995.
  54. physics

    A 48-N object floats in a pool. If 75% of the volume of the object is immersed in the water, which statement is true about the buoyant force FB on the object? A. FB=48N B. FB=36N C. FB=64N D. FB=12N E. This is not possible to answer with the information
  55. algebra

    Will someone check my work here and let me know if I am right. Thanks. Evaluate x+y/7 for x=44 and y=12 My answer is x+y/7=8 2. Translate to an algebraic expression. The product of 42% and some number. The translation is .42x=y 3. Use < or> to make
  56. Mathamatics

    True Or False Questions: The term insurance has no value as an investment and is the least expensive type of life insurance. Liability insurance protects a homeowner against injury to other people on his property. After these my math is done. Someone
  57. Finite

    Assume that the test has 5 true/false questions, and 10 multiple choice questions (4 options per questions), each with exactly one correct answer. If a student guesses randomly on each question, what is his expected score? .5*5+10*.25 5/15?
  58. microeconomics

    If the technology for producign a good improves and at the same time,the price of a substitute good falls, then the quantity bought and sold of the first good will increase. True, False, or Uncertain. Explain.
  59. Science

    1. To a scientist, a river is a kind of stream. True or False. 2. All streams carry sediment. T/F. 3. A delta keeps growing. T/F. 4. Heavy rain always cause flooding. T/F. 5. A river bank is at the end of a river. T/F.
  60. Psychology

    If you could please write the answers to those questions. I am confused because for me they all match to multiple answers. Thanks a lot Early Childhood Development Each of the following scenarios illustrates the development of specific skills.
  61. Philosophy(PleaseHelp)

    Hi, can someone tell me if these 3 multiple choice questions is correct? I'm struggling with these 3 questions and trying to make sure if they are correct. For Kant, the moral worth of an action lies in: a. The predicted effects of that action. b. The
  62. math

    rene gave each of six people 1/10 of a veggie pizza. rene has 2/5 of the pizza left. explain how this is true
  63. Math

    A statement Sn about the positive integers is given. Write statements S1, S2, and S3, and show that each of these statements is true. Show your work. Sn:   1^2 + 4^2 + 7^2 + . . . + (3n - 2)^2 = Not exactly sure how to do this! Could someone help?
  64. algebra

    Use < or > to make the statement true. -11 > -5 is this right. Solve for the indicated letter. b=2c for c The solution is c=2*c is this right. Solve -0.5<-20 THe solution is (x|4 Check these problem for me please
  65. Math

    A statement Sn about the positive integers is given. Write statements S1, S2, and S3, and show that each of these statements is true. Show your work. Sn:    2 + 5 + 8 + . . . + ( 3n - 1) = n(1 + 3n)/2
  66. Science

    When you hold a ball above the ground it has kinetic energy. true false I think it is False - that is potential energy..right?
  67. C++

    True or false: A function call statement transfers control of the program to the last statement in the body of a function.
  68. Liberal Arts Math II

    The following argument is valid: No student is happy You are happy Therefore, you are not a student A) True B) False
  69. Science

    True or False. Winds usually move from areas of low pressure to areas of high pressure.
  70. math

    Statement: If a number is divisible by 2 and by 3, then it is divisible by 6 and vice versa. Is this statement true? Give an example or counter example.
  71. Income Tax

    most employers will deduct tax frm your pay cheque. true or false? false?
  72. science

    true or false: ecosystems with a lot of water support fewer organisms than ecosystems with little water?
  73. calculus

    true of false if the sum of asubn from n=1 to infinity converges, and if a is not equal to 0, the the sum of 1/(a sub n) as n goes from 1 to infinity diverges.
  74. Crime and Society

    Present a clear statement about a particular crime, something we know to be absolutely true. Illustrate how we know that this is an accurate statement.
  75. calculus

    true of false if the sum of asubn from n=1 to infinity converges, and if a is not equal to 0, the the sum of 1/(a sub n) as n goes from 1 to infinity diverges.
  76. Physics

    As the frequency of sound waves increases, the wavelength of the sound waves decreases true or false?
  77. Algebra

    True or False. If a line L1 has equation y = mx + b, where m and b are constants with m ‚ 0,then an equation of a line L2 perpendicular to L1 has the form , where C is a constant. L2: y= -1x +C
  78. physical Edu

    The fight-or-flight response prepares the body for physical action regardless of whether action is needed. is it True
  79. math

    Form a disjunction from the following two statements and determine if the disjunction is true or false. Two is an even number. Two is a prime number.
  80. chemistry

    The end point is the point at which the solutions are neutral and the neutralization process has come to an end. True or False
  81. math

    A statement Sn about the positive integers is given. Write statements S1, S2, and S3, and show that each of these statements is true. Show your work. Sn:    2 + 5 + 8 + . . . + ( 3n - 1) = n(1 + 3n)/2
  82. bio "plasma membrane"

    When a plasma membrane has a pressure of zero, passive transport STOPS IS THAT TRUE OR FALSE? I'M NOT TOO SURE.
  83. Chemistry

    Which of the following is true concerning the reaction below? H2S + HNO3 → S + NO + H2O A. S is reduced. B. H is oxidized. C. N is reduced. D. O is oxidized. ***
  84. statistics

    If a student takes an exam containing 12 true or false questions. If the student guesses what is the probability that he will get exactly 8 questions right?
  85. Math

    From these fractions choose <,>,or= to make a true statement 1. 11/21<2/3 2.1/2=9/18 3. 2 3/8>2 8/24 Order the fractions from least to greatest 3/5 1/4 1/2 2/5 Answer: 1/3 2/5 1/2 3/5 6 3/4, 6 1/2, 6 5/6, 6 3/8 Answer: 3/8 1/2 3/4 5/6
  86. Astronomy

    Sometimes a crater from the Noachian period can be found inside of a crater from the Amazonian period. Probably true Maybe Probably false.
  87. Geometry

    Let p represent a true statement, while q and r represent false statements. Find the truth value of the compound statement. ~[(~q V p)^ ~r] this is the ?
  88. chemistry

    Is it true that the greater difference in electronegativity in an ionic compound, the greater attraction between the elements in the compound?
  89. Math-Linear Equations

    True or false? A line perpendicular to a line whose slope is -0.75 has a slope of 1.3 repeating. Please help me with this.Thank you
  90. Math

    Substitute numbers for the letters to make the equation true. Same letter has the same number. Different letters have different numbers. x + x + y = 20 y + a - y = 9 y + x = 13
  91. American Government

    True or False: The U.S. "Superior" Court is the Nation's most powerful court? (is Superior and Supreme one in the same?)
  92. math

    the circumference of a circle is 120 millimeters. Which of the following inqualities is true for d, the diameter of the circle measured in millimeters? A. 10<d<20 B. 30<d<40 C. 50<d<60 D. 70<d<80
  93. Elementary manth

    Jose said that the square root -X=3 has no solutino since the square root is a negative, is this true. I think it does has a solution
  94. geometry

    let p represent a true statement, while q and r represent false statements, find the truth value of the compound statement ~[(p^q)^r]
  95. Informal Logic

    What is the truth value of the sentence "P v ~ P"? True False Cannot be determined Not a sentence My answer is false, Is this correct?
  96. Plz help

    XY bisects a b at Point G which of the following is true about Point G draw a picture to help you answer the question My answer is B Pleast tell me i got this right
  97. geometry

    Let p represent a true statement, while q and r represent false statements. Find the truth value of the compound statement. ~[(~q V p)^ ~r]

    What value of x makes the equation below true? 1/2(6x-6)+1=3(4x-1) A x=-9 B x=-1/9 C x=1/9 D x=9
  99. Algebra

    If f(a)=K, then which of the following must be true? f(K)=a f inverse(k)=a f inverse(a)=K
  100. help azap math

    Percy wrote this equation to represent the total number of books he carried in two bags. 12 = 7 + b ⁢       Which situation could be described by this equation? A. Percy knows he has a total of 12 books. He knows he has 7 books in