Popular questions and responses by josh
  1. math

    fifteen less than four times seven

    asked on June 2, 2014
  2. math

    1.A wind turbine has blades 50m in diameter and an overall height of 125m. If it has four blades instead of three, create four equations modelling the height of a point on the tip for each of the four blades. 2.Create a sine equation for the height of a

    asked on April 25, 2016
  3. Chemistry(difficult)

    A moon rock collected by a U.S. Apollo mission is estimated to be 3.70 billion years old by uranium/lead dating. Assuming that the rock did not contain any lead when it was formed, what is the current mass of 206Pb per 1.185 g of 238U in the rock? The

    asked on May 3, 2015
  4. Math

    The park had initially planned to charge $8 for admission and expected to have 2400 visitors a day. Allison and Juan were assigned the task of analyzing the park's admission revenues. 1.a)How much revenue would the park have for one day at the current

    asked on July 28, 2016
  5. Calculus

    find the exact value of sin 11pi/12 using the sum or difference formula.

    asked on July 19, 2011
  6. science help plzzz

    Multiple Choice 1. Which of Earth's spheres contains mountains, valleys, and other landscapes? (1 point) atmosphere biosphere geosphere hydrosphere 2. Which of the following are examples of destructive forces? (1 point) ice wind both ice and wind neither

    asked on January 22, 2014
  7. Chemistry

    Order in the increasing value of their polarity? HF NH3 H2O CO2 here i used the scale and got their numbers. HF>H2O>CO2>NH3 am i correct?

    asked on August 17, 2017
  8. Chemistry

    Determine the average rate of change of B from t=0s to t=352s. A to 2B Time Concentration of A (M) 0 0.670 176 0.385 352 0.100

    asked on July 16, 2011
  9. calculus

    A spherical balloon is losing air at the rate of 2 cubic inches per minute. How fast is the radius of the ballon shrinking when the radius is 8 inches.

    asked on January 8, 2017
  10. math

    A man travels 12km due north, then 5km due east and then back to the starting point on a straight road. What is the total distance traveled?

    asked on May 24, 2017
  11. Algebra

    Three fourths of a number increased by 4 is at most 19

    asked on November 9, 2016
  12. Physics

    "The energy that is transferred as heat to or from the object with the larger heat capacity must be greater than the energy that is transferred as heat to or from the object with the smaller heat capacity." Can someone explain why this concept is true or

    asked on June 21, 2011
  13. maths

    Rob is twice Joshua’s age. Nick is 5 years older than Joshua. The sum of all their ages is 45. How old is Nick?

    asked on September 7, 2018
  14. Calc Help Please Again Last one!

    Write out the form of the partial fraction decomposition of the function appearing in the integral: integral (6x-58)/(x^2+2x-63) Determine the numerical values of the coefficients, A and B, where A

    asked on May 16, 2014
  15. Chemistry

    1. For the reaction 2N2O(g) ⇋ O2(g) + 2N2(g), what happens to the equilibrium position if the pressure decreases? A. Shift to the right B. Shift to the left C. Doubles D. Does nothing E. Halves 2. if an equilibrium reaction shifts to the right when the

    asked on October 16, 2012
  16. english 11

    4. Which of the following statements about Anne Bradstreet is NOT true? (1 point)Anne Bradstreet was never married. Anne Bradstreet was the first published poet in America. Anne Bradstreet was born and educated in England. Anne Bradstreet favored poems

    asked on August 23, 2012
  17. maths

    Millie, Josh and Libby receive a bonus at work. They are paid in the ratio of 2:3:4 Josh's share is £105. What was the total amount of the bonus before they shared it?

    asked on October 10, 2015
  18. Can someone please help me with this history!!!!!!

    Multiple Choice 1. Which of the following statements describes the most common experience of Native Americans after encountering Europeans for the first time? (1 point) Native Americans thought the settlers had nothing to offer them in trade or knowledge.

    asked on November 3, 2013
  19. math help plzzzz!!!!

    Multiple Choice 1. What is 0.32 written as a fraction in simplest form? (1 point) thirty-two over one hundred eight over twenty-five one hundred over thirty-two sixteen over twenty-five 2. If Fran’s fudge recipe calls for two and one-half cups of sugar

    asked on October 30, 2013
  20. physiscs

    a 75w and 50 w incandescent light bulbs are designed fot use with the same voltage. what is the ratio of the resistance of the 75- w bulb to the resistance of the 50 w bulb?

    asked on March 8, 2012
  21. chemistry

    A certain reaction has a delta H= -75 kJ and an activation energy of 40 kJ. A catalyst is found that lowers the Activation energy of the forward reaction by 15 kJ. What is the activation energy of the reverse reaction in the presence of this same catalyst?

    asked on March 22, 2010
  22. Chemistry

    The estimated proven world oil reserves in 2013 were 1526 billion barrels. The world annual rate of use was 32.6 billion barrels. How long will these reserves last if this rate of use continues? (The rate of use is actually likely to increase.)

    asked on April 18, 2016
  23. physics

    A stone is projected vertically upwards with a speed of 30ms from the top of a tower of height 50m. Neglecting air resistance determine the maximum height it reached from the ground.[g=10ms^2]

    asked on July 26, 2016
  24. physics

    A long, vertical, straight wire carries a current I going upwards. The wire is perpendicular to the plane of a circular metal loop and passes through the center of the loop. The loop is allowed to fall and maintains its orientation with respect to the

    asked on July 28, 2010
  25. precalculus

    A bacteria culture initially contains 1500 bacteria and doubles every half hour. a) Find an expression for the number of bacteria after t hours. Q(t)= b) The number of bacteria after 20 minutes is (the answer must be an integer) c) The number of bacteria

    asked on March 2, 2011
  26. please help me!! with this science!!!!!

    Multiple Choice 1. Which sphere of the Earth system contains all living organisms? (1 point) atmosphere biosphere geosphere hydrosphere 2. Which of the following statements best describes the geosphere? (1 point) the sphere that consists of solid rock

    asked on January 7, 2014
  27. word problems

    In certain deep parts of oceans, the pressure of sea water, in pounds per square foot, at a depth of d feet below the surface, is given by P=16+7d/11 If a scientific team uses special equipment to measures the pressure under water and finds it to be 646

    asked on March 26, 2017
  28. Physics

    Three boxes are lined up so that they are touching each other as shown in the figure below. Box A has a mass of 30.0 kg, box B has a mass of 45.0 kg, and box C has a mass of 75.0 kg. An external force (F) pushes on box A toward the right, and the force

    asked on November 20, 2016
  29. MATH

    The height h (in meters) of a cannonball t seconds after it is fired into the air is given by h=-4t^2+16t+9. a) What is the initial height of the cannonball? What feature does this correspond to on the graph? b) Find the height of the cannonball after 1

    asked on March 8, 2014
  30. science help plzzz

    Multiple Choice 1. Which of the following images shows a living organism interacting with a biotic factor in its environment? (1 point) bird drinking water koala eating leaves plant in the Earth whale in the ocean 2. Which of the following shows the

    asked on November 7, 2013
  31. college chem

    . Jack Daniels Tennessee whiskey is 40.00% ethanol by volume. However, % alcohol by mass is quite different from % by volume. The molality of ethanol in an aqueous solution that is 40.00 % ethanol by volume is 10.88 molal. A) Find the % ethanol by MASS,

    asked on March 9, 2010
  32. science help plzzz

    1. Which of the following statements best defines tides? (1 point) when waves get bigger because of an approaching storm the rise and fall of ocean water that occurs about every 12.5 hours the rise of ocean water that occurs 12 times a day a giant wave

    asked on January 17, 2014
  33. Chemistry

    What is the ph of 2.5 M solution of HClO4?

    asked on July 20, 2011
  34. organic chem

    7. An unknown compound, C8H14, is optically active. Hydrogenation of the unknown yields 4-methylheptane. Ozonolysis of the unknown yields ethanol and 2- methylpropandial. Suggest a structure for the unknown consistent with the above date. please help

    asked on October 11, 2010
  35. Algebra

    Julie went to the post office and bought both $0.41 stamps and $0.26 postcards. She spent $51.40. The number of stamps was 20 more than twice the number of postcards. How many of each did she buy? I just want to know how to set it up.

    asked on March 3, 2019
  36. Math

    Mrs Harvey Wants To Put a 50 m Long Fence around Her Rectangular Garden. She Only Needs To Fence In 3 Sides Because The Other Side Is Alongside Her House. (a) Write an Expression For y In Terms of x (b) Write an Expression For The Area ( A ) Of The Garden

    asked on March 8, 2014
  37. please help me!! with this science!!!!!

    Multiple Choice: 1. If a kestrel eats a mouse that eats grass, the kestrel is a (1 point) producer. second-level consumer. first-level consumer. decomposer. 2. Which of the following best explains why a species of lizard is able to live in the desert but

    asked on December 11, 2013
  38. geometry

    The Polygon Angle-Sum Theorem states the following: The sum of the measures of the angles of an n-gon is ____. (1 point) (n – 1)180o (n – 2)180o 9. What is the measure of one angle in a regular 16-gon? (1 point) 2,520o 202.5o 157.5o 78.75o 10. The

    asked on December 31, 2012
  39. physics

    A -4.0UC charge is located 0.45m to the left of a +6.0uc charge. what is the magnitude and direction of the electrostatic force on the positive charge?

    asked on March 8, 2012
  40. Physics

    Hey, it's me again, Can someone help me with this question? A water balloon is dropped from the top of a building. Assume the balloon does not break when it strikes the ground. If the water balloon falls a distance of 21m, what is the maximum temperature

    asked on June 28, 2011
  41. Precalculus

    The bacteria in a 8-liter container double every 2 minutes. After 55 minutes the container is full. How long did it take to fill a quarter of the container?

    asked on April 13, 2011
  42. algebra

    In a card game player get at the start 2 green cards, 3 blue cards, 4 red cards, and 3 yellow cards. In how many ways can the player get cards at the start if this card game has 7 green, 7 blue, 10 red and 10 yellow cards?

    asked on May 12, 2019
  43. math

    Find the area of the region enclosed between y=2sin(x) and y=3cos(x) from x=0 to x=0.7π. Hint: Notice that this region consists of two parts.

    asked on April 27, 2019
  44. Math (Please help)

    Macario is making 12 pounds of nut mixture with macadamia nuts and almonds. macadamia nuts cost $9 per pound and almonds cost $5.25 per pound. how many pounds of macadamia nuts and how many pounds of almonds should macario use for the mixture to cost $6.50

    asked on March 3, 2019
  45. Math

    The figure below shows a shaded circular region inside a larger circle: A shaded circle is shown inside another larger circle. The radius of the smaller circle is labeled as r and the radius of the larger circle is labeled as R. On the right side of the

    asked on April 25, 2018
  46. math

    How much money must Andrea invest for 2 years in an account that earns an annual simple interest rate of 8% if she wants to earn $500 from the investment?

    asked on May 2, 2017
  47. Physics

    A ball is dropped from a roof of a building and strikes the ground in 3 seconds. If a second ball is thrown horizontally from the roof, it will hit the ground in:

    asked on September 11, 2014
  48. Physics Please help3

    A point charge with charge q1 = 3.10μC is held stationary at the origin. A second point charge with charge q2 = -4.60μC moves from the point ( 0.160m , 0) to the point ( 0.270m , 0.255m ). How much work W is done by the electric force on the moving point

    asked on May 21, 2014
  49. Chemistry Help Please

    1)how would the accuracy of your determined keq change if all your volume measurements were made with graduated cylinders rather than pipets ? 2) if all of the SCN^- was not converted completely to FeNCS^2+ when the calibration curve was prepared would

    asked on March 13, 2014
  50. Chemistry I

    In determining the heat capacity of a calorimeter, 50ml of water at 56*C is added to 50ml of water at 23*C. After about five minutes of mixing, the final temperature of the solution inside the calorimeter reached 37*C. Calculate the heat capacity of the

    asked on October 22, 2012

    a) How will the concentration of NaOH be affected if during the titration some of the solid potassium hydrogen phthalate was spilled during the transfer? Will the concentration of the standardized NaOH increase, decrease, or have no effect? b) How will the

    asked on October 24, 2011
  52. physics

    A step-down transformer has a turns ratio of 1:10 and its primary is connected across the terminals of a standard 120 V wall socket. A 330 ohm resistor is connected across the secondary of this transformer. What power P is dissipated in the resistor?

    asked on July 28, 2010
  53. Math

    Find how much interest $25,000 earns in 4 years in a certificate of deposit paying 8.5% interest compounded quarterly.

    asked on September 13, 2014
  54. math

    a square photo display is made up of 60 rows of 60 photos each. the area of each square photo is 4 square inches. how long is each side of the display board?

    asked on September 4, 2014
  55. Physics

    A body A of a mass 0.16 kg exerts a force of 6.2x10^-10 N on a body B when the distance between their centers is 0.37 meters. What is the mass of body B?

    asked on August 22, 2014
  56. Help me with this math ms sue.

    Multiple Choice 1. Calculate the slant height for the given cone. Round to the nearest tenth. cone (1 point) 10.2 cm 11.4 cm 9.8 cm 12.0 cm 2. Calculate the slant height for the given cone. Round to the nearest tenth. cone (1 point) 11.2 cm 12.5 cm 14.8 cm

    asked on February 27, 2014
  57. Science help ms sue.

    Multiple Choice 1. Which of the following terms refers to an object that orbits the sun and has enough gravity to be spherical but has not cleared the area of its orbit? (1 point) comet asteroid dwarf planet planet 2. Which of the following statements

    asked on February 25, 2014
  58. Marketing

    Which of the following best describes a target market? a. a business-to-business market b. a group of people most likely to become customers c. a group of people most likely to have the same interests d. a company's market share I couldn't find much info

    asked on September 4, 2013
  59. Math

    Use Mathematical Induction to show that the statement 2 + 6 + 10 + . . . + (4n – 2) = 2n^2 is true

    asked on July 29, 2011
  60. Chemistry

    when 0.154 g of sulfur is finely grounded and melted with campor, the freezing point of the campor is lowered by 5.47 celsius. A)what is the molecular weight of sulfur? B)what is its molecular formula? fp of campor: 178.4 kf of campor: 40

    asked on February 17, 2011
  61. computer science

    a bank charges $10 per month plus the following check fees for a commercial checking account: $.10 each for fewer than 20 checks $.08 each for 20-39 checks $.06 each for 40-59 checks &.04 each for 60 or more checks write a program that asks for the number

    asked on March 10, 2010
  62. algebra

    Solve using elimination. 2x + 6y = 6 2x + 3y = 12

    asked on June 12, 2019
  63. Math

    In a Canadian Football League game, the path at one particular kick-off can be modelled using tge function h(d)=-0.02d^2+2.6d-66.5,where h is the height of the ball and d is the horizontal distance from the kicking team's goal line,both in yards. A value

    asked on March 6, 2017
  64. math

    Is the relationship between the variables in the table direct variation, inverse variation, both, or neither? If it is a direct or inverse variation, write a function to follow it. X:2 5 20 40 Y:40 20 5 2 ANSWERS AVAILABLE TO CHOSE: A) NEITHER B) INVERSE

    asked on May 17, 2016
  65. Chemistry

    Burning 2.00 mol of hydrogen releases 483.6 kJ of energy. Determine how much energy, in kilojoules, must be supplied to convert 5.00 mol of water vapor into hydrogen gas and oxygen gas.

    asked on April 18, 2016
  66. Math Question

    What is the 50th term of the sequence that begins -6,0,6,12? 292 288 286 290

    asked on May 19, 2014
  67. Please help with Calc!

    Evaluate the indefinite integral. integral 2e^(2x)sin(e^2x) Note: Use an upper-case "C" for the constant of integration.

    asked on May 3, 2014
  68. Algebra

    Estimate the square root. Round to the nearest integer. √242 What I got was 58,584 is this correct?

    asked on October 9, 2013
  69. Trig

    sin^4t-cos^4t/sin^2t cos^2t= sec^2t-csc^2t i have =(sin^2t+cos^2t)(sin^2t+cos^2t)/sin^2tcos^2t then do i go =(sin^2t+cos^2t)/sin^2tcos^2t stumped

    asked on April 19, 2012
  70. Chemistry

    A solution of H2SO4 with a modal concentration 6.25m has a density of 1.300 g/ml. What is the molar concentration?

    asked on July 12, 2011
  71. Chemistry

    x+y=9.0 0.50x+0.20y=3.90 What is the value of x and y?

    asked on July 9, 2011
  72. 3rd grade shurley english

    what does s, f,scs, scv mean when indentifying(labeling) sentences thanks

    asked on October 26, 2010
  73. Physics

    A proton is at the origin and an electron is at the point x = 0.41 nm, y = 0.36 nm. Find the electric force on the proton. I got 7.529 *10^-11 but it wants the answer for fx and fy how do i get that?

    asked on August 6, 2009
  74. Math

    Solve the following problem taken from Treviso Arithmetic, a math textbook published in 1478 by an unknown Italian author: A man finds a purse with an unknown number of ducats in it. After he spends 1/4, 1/5 and 1/6 of the amount, 9 ducats remain. It is

    asked on November 16, 2007
  75. Math

    Nataly is considering two job offers. The first job would pay her $83,000 per year. The second would pay her $66,500 plus 15% of her total sales. What would her total sales need to be for her salary on the second offer be higher than the first?

    asked on March 11, 2019
  76. Business Calculus

    Let logb 2=2.217 and logb 3=3.417. Find logb 3b Please walk me through this steo by step.

    asked on April 1, 2018
  77. Algebra

    The path of a diver is given by y=-4/9 x^2 + 24/9x +12 where y is the height (in feet) and x is the horizontal distance from the end of the diving board (in feet). What is the maximum height of the diver?

    asked on September 29, 2015
  78. Math (Trig)

    Rewrite the following expression in terms of tan3x: (sin2x + sin4x)/(cos2x + cos4x)

    asked on September 29, 2014
  79. Physics

    How to solve? 2. A 70.0 kg astronaut is training for accelerations that he will experience upon reentry. He is placed in a centrifuge (r = 10.0 m) and spun at a constant angular velocity of 16.3 rpm. Answer the following: a. What is the angular velocity of

    asked on May 20, 2014
  80. Math (2 Questions) - Please Help

    A cube has 8 vertices, 12 edges, and 6 square faces. A soccer ball (also known as a buckyball or truncated icosahedron) has 12 pentagonal faces and 20 hexagonal faces. How many vertices and how many edges does a soccer ball have? A circular table is placed

    asked on April 16, 2014
  81. Language arts help!!

    1–6, read the play excerpt below and answer the questions that follow. Jaws of the Water ACT TWO At rise we see DAD, TINA, and MARK rushing in and out of the living room. Each enters carrying important items—such as sleeping bags, rain gear, and

    asked on March 20, 2014

    4. For the pair of similar solids, find the value of the variable. cylinders (1 point) 3 cm 18 cm 16 cm** 2 cm 5. For the pair of similar solids, find the value of the variable. pyramids (1 point) 12 mm 48 mm** 20 mm 3 mm ARE THESE CORRECT?

    asked on March 12, 2014
  83. Physics

    Which statements about traveling waves are TRUE? Choose all that apply. a) A traveling wave transfers energy from one point to another. b) A speaker that beams its sound forward into a small area produces a louder sound. c) The rate at which a wave

    asked on February 22, 2014
  84. Physics

    Two uniform solid spheres have the same mass of 3 kg, but one has a radius of 0.25 m while the other has a radius of 0.8 m. Each can rotate about an axis through its center. (a) What is the magnitude τ of the torque required to bring the smaller sphere

    asked on January 11, 2014
  85. Math (Geometry)

    1. A rhombus has an area of 5 square meters and a length of 3 meters. In a similar rhombus, the length of a side is 9 meters. What is the area of the second rhombus? [Area= diagonal1 X diagonal2 / 2]

    asked on August 6, 2013
  86. Algebra 2

    Objective Function: C = 6x – 4y

    asked on March 5, 2013
  87. physics

    the elecric potential at a certain point is space is 12 V. What is the electric potential energy of a -3.0uc charge placed at that point? is it +36uj?

    asked on March 8, 2012
  88. Pre Calculus

    find all solutions of the equation 1. x^3+27=0 2. x^3-8=0

    asked on November 21, 2011
  89. Chem

    A lake may be polluted with Pb2+ ions. what precipitation reaction might you use to test for the presense of Pb2+?

    asked on October 9, 2011
  90. Chemistry

    When 1.187g of a metallic oxide is reduced with excess hydrogen, 1.054g of the metal is produced. How do you determine what the metal oxide is?

    asked on May 18, 2011
  91. College Physics

    A 7.00 g bullet, when fired from a gun into a 1.00 kg block of wood held in a vice, penetrates the block to a depth of 8.00 cm. If the block had instead been at rest on a frictionless horizontal surface, to what depth would the bullet have penetrated?

    asked on May 18, 2011
  92. math

    the edges of 3 cubes are consecutive odd intergers. if the cubes aer stacked on a desk as shown, the total exposed surface area is 381. find the lenths of the sides of the cubes thanks!!

    asked on March 21, 2011
  93. Math

    If the code generator polynomial is g(x) = 1 + x^2 for a (5,3) code, find the linear block code generator matrix G.

    asked on February 15, 2011
  94. derivatives

    Explain how a long stock and long put strategy equals the cash flow from a long call strategy.

    asked on February 13, 2011
  95. Physics

    A -3.5uC charge experiences a 13 ihat-N electric force in a certain electric field.What force would a proton experience in the same field? I got -7.28*10^-18 from (1.6*10^-19)(-45.5) I got -45.5 from multiplying 13 by -3.5 What am I doing wrong?

    asked on August 6, 2009
  96. biology

    What will happen when you mix saliva, water, gelatin? Then, mix starch, water, iodine?

    asked on September 21, 2007
  97. Math

    . Vern sold his 1964 Ford Mustang for $55,000 and wants to invest the money to earn him 5.8% interest per year. He will put some of the money into Fund A that earns 3% per year and the rest in Fund B that earns 10% per year. How much should he invest into

    asked on March 4, 2019
  98. English

    Which statement is NOT true about sentence fragments? A. They do not have a subject, but they have a predicate. B. They do not have a subject and a verb. C. They do not form a complete thought. D. Adding other words makes the fragment a complete sentence.

    asked on September 17, 2018
  99. math

    Testing Laboratory Gloves The New York Times ran an article about a study in which Professor Denise Korniewicz and other Johns Hopkins researchers subjected laboratory gloves to stress. Among 240 vinyl gloves, 63% leaked viruses. Among 240 latex gloves, 7%

    asked on December 6, 2017
  100. stats

    A study was made of 413 children who were hospitalized as a result of motor vehicle crashes. Among 290 children who were not using seat belts, 50 were injured severely. Among children using seat belts, 16 were injured severely (based on data from

    asked on December 6, 2017


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