Posts by AJ

Total # Posts: 405

  1. calculus

    The equation x^2+4y^2=100 describes an ellipse. First, use implicit differentiation to find its slope at the points (8,3) and (8, -3). Then, solve the equation for y, obtaining two functions and differentiate both to find the slopes at x = 8. Do your answers agree? Should they...
  2. Probability

    In how many ways can 7 people be lined up in a row for a picture if two of them should have at least 2 people between them?
  3. math

    A rich uncle wants to make you a millionaire. How much money must he deposit in a trust fund paying 8% compounded quarterly at the time of your birth to yield $1,000,000 when you retire at age 59?
  4. Economics

    Suppose that when disposable income rises from $5.2 trillion to $6.0 trillion, consumption rises from $5.0 trillion to $5.6 trillion. What is the marginal propensity to consume?
  5. calculus

    Find the value of $800 deposited in a bank at 10% interest for 8 years compounded in the following ways. (Round your answers to the nearest cent.) (a) annually_________$ (b) quarterly_________$ (c) continuously________$
  6. calculus

    The reproduction function for a sardine is f(p) = ?0.0004p^2+3p, where p and f(p) are in hundred metric tons. Find the population that gives the maximum sustainable yield, and the size of the yield. population=_________ hundred metric tons size of yield=__________ hundred ...
  7. calculus

    Marine ecologists estimate the reproduction curve for swordfish in a fishing ground to be f(p) = ?0.01p^2 + 8p, where p and f(p) are in hundreds. Find the population that gives the maximum sustainable yield, and the size of the yield.
  8. calculs

    A page of 150 square inches is to have margins of 1 inch on either side and 1 1/2 inches at the top and bottom, as in the diagram. Find the dimensions of the page that maximize the print area.
  9. Probability

    Four distinct fair of dice are rolled. What is the probability that the sum of the resulting numbers is at least 23?
  10. Math

    30-second oral question The expression 9(2018^2)+20180+4040 is a square of what positive integer?
  11. Analytic Geometry

    The midpoint of P(1,2) and A is Q; the midpoint of P and C is S; the midpoint of Q and S is R(5,1.5). Find the coordinates of B, the midpoint of A and C.
  12. Algebra

    Jack and Jill regularly run around an 800-meter track, but Jack runs 2 m/s faster. If they start from the same point on this track, and run in the same direction, Jack will eventually pass Jill in 6 minutes and 40 seconds. What is Jill's speed?
  13. Maths

    17. Atlanta, Georgia, receives an average of 27 inches of precipitation per year, and there has been 9 inches so far this year. How many more inches, p, of precipitation can Atlanta get and to stay at or below the average? (1 point) p + 9 > 27; p > 18 9 + p ? 27; p ? 18...
  14. Math

    True or False. 1. Every function is a relation. 2. When you switch the inputs and outputs of any function, the resulting relation is a function.
  15. Algebra

    Thank you !
  16. Algebra

    1. -9p-17=10 Will someone help me figure out the answer and show me the process?
  17. Math

    You are making cookies. One recipe calls for 4 cups of chocolate morsels for 3 batches of cookies.. A second recipe calls for 5 cups of chocolate morsels for 4 batches of cookies. Which cookies will contain more chocolate morsels?
  18. Math

    An important business executive in Italy was caught speeding in northern Italy. He was testing his brand new Porsche sports car. He was clocked at 311 kilometers an hour and fined 347 Euros. If a kilometer is .625 of a mile and a Euro was worth $1.25 at the time, how fast was ...
  19. Social Sciences-Social Anthropology

    Hi Please help me I am confused Am I a homo sapiens? or a homo sapiens sapiens? thank you so much.
  20. Math

    Scott how did you get 1 3/4 pounds? Do I multiply 1/34 to $2.24?
  21. Math

    If 1 pound, 12 ounces of fish cost $2.24, what is the cost of the fish per pound?
  22. Math

    12x12 =144 would be the news area?
  23. Math

    It doesn't say much about the area.
  24. Math

    A square measure 9 feet on a side. If each side of the square is increased by 3 feet, how many square feet are added to the area? What are the steps in solving this math equation?
  25. Physical Science

    Describe/draw the process and steps of an electron emitting light.

    DaWae is 100% correct. DaWae knows DaWae.
  27. Chemistry

    Calculate the pH of 175.0 mL of H2O following the addition of 0.57 mL of 1.39 M NaOH
  28. Spanish

    Ms. Sue Kendall Rae is 100% right
  29. Physics

    a) The recommended daily allowance (RDA) of the trace metal magnesium is 410 mg/day for males. Express this quantity in ?g/s. Express this quantity in b) For adults, the RDA of the amino acid lysine is 12 mg per kg of body weight. How many grams per day should a 75 kg adult ...
  30. Chemistry

    Given H2(g) + (1/2)O2(g) ---> H2O(l), dH = -286 kJ/mol, determine the standard enthalpy change for the reaction 2h2O(l) ---> 2H2(g) + O2(g) 2H2O(l) ---> 2H2(g) + O2(g) H2(g) + (1/2) O29g) ---> H2O (l) : dH = -286 kJ/mols 2H2O(l) ---> 2H2(g) + 2O2(g) : would dH ...
  31. Chemistry

    Write the balanced chemical reaction (showing appropriate symbols and states) for the chemical reaction with enthalpy change equal to and defined by the quantity dHformation [NH3(g)] N2(g) + 3H2(g) --> 2NH3(g) Is that all the question is asking for?
  32. Chemistry

    When .560 g of Na(s) reacts with excess F2(g) to form NaF(s), 13.8 kJ of heat is evolved at standard-state conditions. What is the standard enthalpy of formation of NaF(s)? Start off by balancing the equation: 2Na(s) + F2(s) ---> 2NaF(s) Then make it for one mole Na(s) + (1...
  33. Chemistry

    The enthalpy of formation for a substance corresponds to the enthalpy change for a reaction. Write the specific chemical reaction defining the enthalpy of formation of butane: Just checking to make sure this is correct: 4C + 5H2 ---> C4H10
  34. discrete math

    A bubble sort begins with the array: 372418 Work through the lists obtained at each step of the bubble sort. Complete the table below for the intermediate step where 7 is at position four in the array. [][][]7[][]
  35. Math

    my divisor is 5 I'm greater than 4 X 5 I'm less than 5 x 5 my remainder is 1 what dividend am I
  36. Maths

    There are 150 mangoes in basket p and basket q. 1/4 of the mangoes in basket p were yellow and the rest were green. 3/5 of the mangoes in basket q were yellow and the rest green. The number of green mangoes in both baskets were equal. How many yellow mangoes were there ...
  37. Maths

    Hi, I have checked and corrected all grammatical errors. Thanks
  38. Maths

    There were 150 mangoes in basket Q. 1/4 of the mangoes in basket P were yellow and the rest were green. 3/5 of the mangoes in basket Q were yellow and the rest were green. The number of green mangoes in both baskets was equal. How many yellow mangoes were there were there ...
  39. Maths

    There are 150 mangoes in basket p and basket q. 1/4 of the mangoes in basket p were yellow and the rest were green. 3/5 of the mangoes in basket q were yellow and the rest green. The number of green mangoes in both baskets were equal. How many yellow mangoes were there ...
  40. Algebra

    Translate into a variable expression. Then simplify the expression. Twice the sum of four times a number n and thirty. Can you explain how to write it as a variable expression pls Also what does "and" stand for here?
  41. Meth

  42. Geometry

    Problem: ABCDE$\ is an equilateral pentagon with side length 2 in which angle B= angle E=120 degrees. The area of ABCDE can be expressed in the form square root of x + square root of y for some integers x and y. Find x+y. I don't understand. I really need help.
  43. Math

    A soccer field has a perimeter of 26 yards.if the width is 8 yards,how long is the length?
  44. PsyDAG How can i inteview you?

    remember that statistics assignment of ours? pleaseee
  45. Statisticians Interview only

    Is it okay if i can interview you? Please thank you so much how can i interview you
  46. Statisticians Interview only

    Hello are you a statistician? may I interview you? Thank you
  47. Science

    What is this for? I think too many sentences have grammatical errors... and be careful on your choice of words. Have you checked what moribund means really?
  48. Math Slope

    Jose the plumber charges $65 per hour to fix your plumbing. He uses the equation C=65H+100 to determine the charge of his services, C, after working h hours. What is the Y intercept? What does it represent in the context of the problem.
  49. Math

    A printer takes 5mins to print 90 copies of a repor. At this rate, how many copies of the same report can it print in 1/2 hours
  50. science

    2.6 billion
  51. algebra

    The sum of two numbers is 100. Such that the first number is twice as large as the second number, when the second number is subtracted by 1.
  52. Math

    A running track consists of two straight sections with semi-circular ends. If the straight sections measure 100 metres and one compete lap on the inside of the track measures 1/2 k, what is the distance x between the two straights?
  53. Calculus

    What is the maximum area of a rectangle that has sides along the positive x-axis and y-axis and lies below the line 3x+2y=1
  54. LA

    she cant read aloud duhh
  55. History

    eat my ass
  56. math

    I mean i guess so, 385 representatives are their based on the population of each state, and 2 senators for each state. It seems like the most fair way of representation.
  57. Algebra

    Rene used a $4 off coupon to buy bows which cost $2 each. Write an inequality rene could use to determine the number of bows she can buy if she plans to spen more that $8. Then graph the solution set
  58. Algebra

    note that x>0 (x) + 5 = 806 * (1/x) is your set up Simplify: x + 5 = (806/x) Multiply both sides by x x(x+5) = (806/x) * x x^2 + 5x = 806 Set to zero (x^2 + 5x - 806) = 0 Factor! :D (x-26)(x+31) = 0 Set each factor to 0 (x-26) = 0 x = 26 (x+31) = 0 x = -31 so, x = {26,31} ...
  59. Algebra

    x^2 + 6x - 17 = 0 First separate x terms X^2 + 6x = 17 or 17 = x^2 + 6x remember that aX^2 + bx + c to complete square, divide b by two, and square it. 6/2 = 3. 3^2 = 9. Now add 9 to each side of the equation 17+9 = x^2 + 6x + 9 combine like terms: 26 = x^2 + 6x + 9 Now factor...
  60. AR

    you can make 20 bags of 5 pounds apples (1/4) * 4 = 1 4 apples = 1 pound 20 apples = 5 pound (1 bag) 400/20 = 20 ----- * = multiplication / = division Hope this helps :^)
  61. Physics

    your equation is: E = (hc/Lambda) E = energy h = planck's constant (6.626 × 10^-34 joule·s) c = speed of light (2.998 × 10^8 m/s) lambda = wavelength 1) h*c = 1.99 × 10^-25 joules-m note: when dealing with photons and electrons, we usually use ...
  62. Science

    Pretty sure its 1) a 2) c 3) B Explanation if you want to know why 1) Because there is no more forward acceleration of the car, the friction from the tires and the weight of the car will slow down. the the potential energy will eventually become thermal energy because the ...
  63. Chemistry

    What mass of ammonium chloride must be decomposed to prepare 134 grams of ammonia (NH3). Hydrochloric acid will also be produced.
  64. English

  65. Geography

    which demographic group is correctly matched with its issue A.religious people - farm subsidies B.midwesterners - farm subsidies C.single parents - affirnmative action D.all are matched correctly
  66. Computer Science/Pseudo Code Python

    okay so start off the program with a menu pattern. create an int or char called menuchoice Have variables (int or char) from 1-6 or A-F as your menu option After you coded your menu, let your user enter their 2 numbers. So create 2 for int variables (num1,num2). now either use...
  67. Technology

    There is no E answer idiot Thx for the honest people
  68. Programming

    Nothings really wrong, only states go off of 2 characters. texas: TX Thats really the only thing i can think of. No one knows what state "a" is but everyone knows that "AR" is Arkansas.
  69. College- US History

    How has popular culture reinforced Cowboys of the West?
  70. Math

    Prove that cot²A(secA-1) = Cos A
  71. Finance

    ****HELP PLEASE**** Given the following information, answer the following: TR=$3Q TC= $1,200 = $2Q 1. what is the break-even level of output? 2. If the firms sells 1,300 units, what are its earnings or losses? 3. If sales rise to 2,000 units, what are the firms earnings or ...
  72. Maths

    In a box of markers there are eight which have dried up and will not write. The box contains 15 red, 15 purple, 5 black and 10 white markers. A marker is picked at random from the box. Find the probability that a) it is red b) it is not black c) it is purple or white d) it is ...
  73. science

    Boo is right, for connexus
  74. Maths

    The sum of two digits number is 7. In changing position of digits we get the number 9 less than the original number. What is number?

    If there is no dark matter, in order to explain our observations, our concepts of an important building block of the universe have to be incorrect. What is that building block and why do Astronomers overwhelmingly favor dark matter, which they cannot see, to explain our ...
  76. Physics / Astronomy

    If there is no dark matter, in order to explain our observations, our concepts of an important building block of the universe have to be incorrect. What is that building block and why do Astronomers overwhelmingly favor dark matter, which they cannot see, to explain our ...
  77. math

    how do I find how many times greater ? 9x10 to the 8 power is how many times greater than 3x10 to the 7 power?
  78. maths

    riposting this. the answer kindly supplied by Steve is beyond my understanding. all i want to know please is how long will the shadow be cast on the ground by a 3m tall vertical fence with the sun behind it as follows: THIS IS NOTHING TO DO WITH A LADDER A fence 3m tall is ...
  79. maths

    THIS IS NOTHING TO DO WITH A LADDER A fence 3m tall is erected vertically and parallel to a building that is 10m away please can someone tell me the maximum length of the shadow the fence will cast on the ground - thank you
  80. maths

    a fence 2m tall and 5m from a parallel building - what length is the shadow from the fence and how is this worked out?
  81. Math

    find the sum of 2 1/2 and 2/5
  82. Math

    2/3>3/ number that makes the statement true.. I am confused
  83. Defective probability i need help

    a. 0 = 0.0476 b. 1 = 0.1471 c. 2 = 0.2252 d. 3 = 0.2275
  84. Social Studies

    thanks Ms.Sue!
  85. Social Studies

  86. Social Studies

    What was the main purpose of the settlers who established Jamestown? trap animals and sell furs find gold and silver farm tobacco collect sweetgrass for baskets Would it be B? I am thinking B,or C.
  87. Math

    The local health club is advertising a special for new members: no initiation fee to join and lnly $34.50 per month for the first year. If Andy joins the health club for one year, how much will he spend on membership?
  88. Math

  89. Math

    How do I figure out this problem
  90. Algebra

    The time, t, required to drive a certain distance varies inversely with the speed, r. If it takes 12 hours to drive the distance at 60 miles per hour, how long will it take to drive the same distance at 85 miles per hour? A. About 7.08 hours B. About 5.00 hours C. About 1.42 ...
  91. algebraic modeling

    A toy manufacturer determines that the daily cost,C, for producing x units of a dump truck can b approximated by the function c(x)=0.005x^2-x+109 I got that the manufacturer must produce 100 units per day... What is the minimum daily cost?
  92. math

    Yeah that’s what I thought bla bla

    do you go to connections academy?
  94. LA/READING(:

    do you go to connections acadmey?
  95. LA/READING(:

    are you sure
  96. math

    Why Was the Engineer Driving the Train Backwards?
  97. math

  98. chemistry

    Thank a bunch
  99. chemistry

    What volume of 0.050 M AgNO3, silver nitrate solution is required to reat completely with 60.0 mL of 0.025 M K2S, potassium sulfide?
  100. Stats

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