Newest questions and responses by AJ
  1. algebra

    there is a cylinder perfume bottle the height is 12.4 cm the radius is 6.2 cm the formula is v= h * 3.14 * r squared

    asked on January 31, 2019
  2. Math

    Express the product (1−1/2^2)(1−1/3^2)(1−1/4^2)···(1−1/21^2) as a fraction a/b, where a and b are relatively prime positive integers.

    asked on November 11, 2018
  3. analytic geometry

    A parabola y=ax^2+bx+c has vertex (4,3). If (3,0) is on the parabola, find a.

    asked on October 30, 2018
  4. Math

    Evaluate sqrt of (2003)(2005)(2007)(2009)+16 by using algebraic method.

    asked on October 21, 2018
  5. Combinations

    Five members from a group of 6 girls and 5 boys are chosen. How many five-member teams are there that include more than two boys?

    asked on September 6, 2018
  6. Maths

    Write an equation of the line that passes through (-5,-1) and is parallel to the line y=-3x+6

    asked on August 10, 2018
  7. geometry

    1)The Arthur Ravenel Jr. Bridge is the longest cable-stayed bridge in the United States. The bridge has a total length of 13200 feet. Each year, the Cooper River Bridge 5K Run is held in the Spring. If there are approximately 16404 feet in 5 kilometers,

    asked on July 29, 2018
  8. 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

    asked on March 28, 2018
  9. 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?

    asked on March 18, 2018
  10. 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?

    asked on March 11, 2018
  11. 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?

    asked on March 7, 2018
  12. 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________$

    asked on March 7, 2018
  13. 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

    asked on March 5, 2018
  14. 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.

    asked on March 4, 2018
  15. 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.

    asked on March 4, 2018
  16. Probability

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

    asked on February 12, 2018
  17. Math

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

    asked on February 10, 2018
  18. 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.

    asked on February 9, 2018
  19. 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?

    asked on February 8, 2018
  20. 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 +

    asked on February 4, 2018
  21. 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.

    asked on February 3, 2018
  22. Algebra

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

    asked on February 1, 2018
  23. 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?

    asked on January 25, 2018
  24. 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

    asked on January 11, 2018
  25. 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.

    asked on November 30, 2017
  26. Math

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

    asked on November 26, 2017
  27. 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?

    asked on November 25, 2017
  28. Physical Science

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

    asked on November 9, 2017
  29. Chemistry

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

    asked on October 3, 2017
  30. 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

    asked on June 9, 2017
  31. 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) :

    asked on March 26, 2017
  32. 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?

    asked on March 26, 2017
  33. 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

    asked on March 26, 2017
  34. 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

    asked on March 26, 2017
  35. 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[][]

    asked on March 9, 2017
  36. 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

    asked on February 20, 2017
  37. 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

    asked on February 15, 2017
  38. 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

    asked on February 14, 2017
  39. 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?

    asked on February 13, 2017
  40. 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

    asked on January 29, 2017
  41. Math

    A soccer field has a perimeter of 26 yards.if the width is 8 yards,how long is the length?

    asked on January 24, 2017
  42. PsyDAG How can i inteview you?

    remember that statistics assignment of ours? pleaseee

    asked on January 21, 2017
  43. Statisticians Interview only

    Hello are you a statistician? may I interview you? Thank you

    asked on January 19, 2017
  44. 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.

    asked on December 30, 2016
  45. 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

    asked on November 3, 2016
  46. 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.

    asked on August 15, 2016
  47. 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?

    asked on August 15, 2016
  48. 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

    asked on August 1, 2016
  49. 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

    asked on April 16, 2016
  50. Chemistry

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

    asked on March 23, 2016
  51. 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

    asked on March 16, 2016
  52. College- US History

    How has popular culture reinforced Cowboys of the West?

    asked on January 29, 2016
  53. Math

    Prove that cot²A(secA-1) = Cos A

    asked on January 28, 2016
  54. 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

    asked on January 26, 2016
  55. 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

    asked on January 26, 2016
  56. 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?

    asked on December 31, 2015

    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,

    asked on December 14, 2015
  58. 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,

    asked on December 10, 2015
  59. 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?

    asked on December 9, 2015
  60. 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

    asked on November 4, 2015
  61. 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

    asked on November 4, 2015
  62. 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?

    asked on November 4, 2015
  63. Math

    find the sum of 2 1/2 and 2/5

    asked on October 16, 2015
  64. Math

    2/3>3/ number that makes the statement true.. I am confused

    asked on October 13, 2015
  65. Social Studies

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

    asked on September 19, 2015
  66. 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?

    asked on September 14, 2015
  67. 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

    asked on June 2, 2015
  68. 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?

    asked on May 13, 2015
  69. math

    Why Was the Engineer Driving the Train Backwards?

    asked on March 27, 2015
  70. 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?

    asked on March 13, 2015
  71. math -hw help

    Determine whether the following regular tetrahedrons have an edge length that is a whole number, a rational number or irrational number. The surface are of a tetrahedron is given by the equation: SA = √ 3s^2 Surface are of regular tetrahedron A = 1.5

    asked on February 5, 2015
  72. math (factors and products)

    How could you use an area model to identify the binomial factors of a trinomial?

    asked on January 22, 2015
  73. Math

    How could you use an area model to identify the binomial factors of a trinomial?

    asked on January 21, 2015
  74. physics

    A soccer ball is kicked with an initial horizontal velocity of 16.5 m/s from a 92 meter high cliff. Determine the time it took the ball to reach the ground and how far the ball got from the edge of the cliff.

    asked on December 16, 2014
  75. Algebra2


    asked on November 20, 2014
  76. arithmetic

    If you have 3 cups of pineapple juice and, how many total cups of punch can you make? Table: Ginger Ale - 40% OJ 25% Pineapple juice 20% Sorbet 15

    asked on November 3, 2014
  77. Math

    Write a word phrase for this algebraic expression. 6.5-h

    asked on October 28, 2014
  78. Physics(Science)

    Waves on a 5.0 m rope travel at a speed of 92 m/s. If the tension in the rope is 497 N, what is the mass of the rope?

    asked on October 26, 2014
  79. elementary

    Magic square 13.6

    asked on September 17, 2014
  80. Physics

    A dart is thrown horizontally with an initial speed of 14 m/s toward point P, the bull's-eye on a dart board. It hits at point Q on the rim, vertically below P, 0.19 s later. (a) What is the distance PQ? (b) How far away from the dart board is the dart

    asked on September 14, 2014
  81. English

    how do I start an Auto Biography? I mean what sentence should i start it with?

    asked on September 6, 2014
  82. MATH HELP!!


    asked on August 20, 2014


    asked on August 12, 2014
  84. math

    2^5/2 - 2^3/2

    asked on August 9, 2014
  85. Physics

    You are standing on a fish pond wishing to catch a fish. How would you aim your fish gun in order to catch a fish which your eyes could see 20 cm below the surface of water ? will u aim higher , lower or exactly on the location of the fish as seen by your

    asked on July 27, 2014
  86. Grammar

    Before the items that are complete sentences, write S. Before those that contain fragments, write F. Before a run on sentence, write RS. 1. We often walk through the woods, picking berries and listening to the birds. Is this a run on sentence?

    asked on July 2, 2014
  87. math

    how can i plot values in a parabola graph if the values are fractions. it's my first time with this things so i don't understand

    asked on May 3, 2014
  88. Math

    If I has plots of (3,2) and (8,6) how would I find the area in square units

    asked on January 29, 2014
  89. Physics

    A firefighter of mass 73 kg slides down a vertical pole with an acceleration of 5 m/s2. The acceleration of gravity is 10m/s2. What is the friction foce that acts on him? Answer in units of N

    asked on January 7, 2014
  90. Spelling

    Wordly wise 3000 book 7 lesson 7c vocab answers?

    asked on December 17, 2013
  91. Science

    Uranium-238 is less stable than oxygen-16. What accounts for this difference? (A) Uranium is a solid, while oxygen is a gas. (B) Unlike oxygen-16, uranium-238 has a nucleus in which repulsive electric forces surpass the strong nuclear forces. (C) Oxygen-16

    asked on November 20, 2013
  92. Math

    If sin(x) = 1/3 and sec(y) = 29/21 , where x and y lie between 0 and π/2, evaluate the expression using trigonometric identities. (Enter an exact answer.) cos(2y)

    asked on September 23, 2013
  93. English

    What type of clause or phrase is italicized in the sentence below? The play, a three-act farce, amused everyone.

    asked on September 23, 2013
  94. math

    Pat worked 43 hours and received $7.25 per hour for regular pay and time-and-a-half for all hours over 40 hours. What were her weekly earnings?

    asked on September 6, 2013
  95. physics

    The drawing shows a uniform horizontal beam attached to a vertical wall by a frictionless hinge and supported from below at an angle θ = 38o by a brace that is attached to a pin. The beam has a weight of 346 N. Three additional forces keep the beam in

    asked on July 16, 2013
  96. math

    what is missing number for magic square for 22, 111,72, 131

    asked on July 9, 2013
  97. algebra 1

    Graph each rational function;identify the domain and ranges;and compare the graph with the graph y=1/x. 1.y=-10/x 2.y=1/(x+3)+3

    asked on April 24, 2013
  98. algebra 1

    Graph each rational function;identify the domain and ranges;and compare the graph with the graph y=1/x. 1.y=-10/x 2.y=1/(x+3)+3

    asked on April 24, 2013
  99. calculus

    the telephone company is planning to introduce two new types of executive communications systems that it hopes to sell to its largest commercial customers. It is estimated that if the first type of system is priced at x hundred dollars per system and the

    asked on April 23, 2013
  100. Science

    What are some of the effects of the sun's radiation on the earth's atmosphere including the green house effect, conduction, convection and radiation?

    asked on April 10, 2013


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