Roy

Most popular questions and responses by Roy
  1. Trigonometry

    Points A and B 1000 meter apart are plotted on a straight highway running east and west. from A, the bearing of tower C is N32*W and from be, the bearing of C is N64*E. approximate the shortest distance of the tower from the highway. please explain........

    asked on September 9, 2012
  2. statistics

    suppose that grade point averages of undergraduate students at one university have a bell shaped distribution with a mean of 2.55 and a standard deviation of 0.43. Using the empirical rule, what percentage of students have grade point averages that are

    asked on September 23, 2013
  3. Trigonometry

    A plane is headed due east with airspeed of 240 mph. if a wind at 40 mph is bloiwing from the north , find the ground speed of the plane.

    asked on September 9, 2012
  4. calculus

    Find dy/dx, if y= 5e^x/cosx

    asked on September 17, 2013
  5. Please do Civics Essay thanks so much

    Please Help with essay question. thanks!! In a federal system of government (also known as a federation), the local and state governments share power with the central government, though the central government has final authority. Eplain how this is

    asked on May 1, 2014
  6. Calculus

    Consider a hemispherical bowl with a radius of 12 cm. The bowl contains water to a depth of 9 cm. The density of the water at any point x cm below the surface of the water is given by 2e^(0.15x) g/cm^3. A. Find the volume of the water in the bowl. B. Find

    asked on May 15, 2018
  7. Please help Math

    Gravel is being dumped from a conveyor belt at a rate of 20 cubic feet per minute. It forms a pile in the shape of a right circular cone whose base diameter and height are always equal to each other. How fast is the height of the pile increasing when the

    asked on March 15, 2009
  8. Math

    The store is selling lemons at $0.33 each. Each lemon yields about 2 tablespoons of juice. How much will it cost to buy enough lemons to make four 9-inch lemon pies, each requiring half a cup of lemon juice? The first time I tried it, it was 1.32 then i

    asked on March 7, 2017
  9. Trigonometry

    The perimeter of an isosceles triangle is 6.6824. find its area.

    asked on September 8, 2012
  10. College Chemistry

    Plaster of Paris is the compound calcium sulfate hemihydrate, CaSO4*1/2H2O What mass of water is liberated when a 2.763 gram sample is heated to constant mass? The sample is 2.763 grams How much of the 2.763 gram sample is water? I need an amount in grams.

    asked on October 8, 2011
  11. science(chem)

    How many moles of sulfate ions are present in 1.2 mol of aluminum sulfate?

    asked on November 25, 2011
  12. 8th grade

    Can you unscramble these letters:afsedrniru

    asked on October 15, 2008
  13. Trigonometry

    A ladder 5 meter long leans against the wall of an apartment house forming an angle of 50 degrees, 32 minutes with the ground. how high up the wall does it reach?

    asked on September 8, 2012
  14. Probability

    natalie has a bag that contains eight marbles. she draws out a marble, record its color, and puts it back. if natalie repeats this eight times and does not record any red marbles, can she concludes that there are not any red marbles in the bag? Explain

    asked on April 27, 2014
  15. Trigonometry

    The hypotenuse of a right triangle is 34cm. find the length of the two legs, if one leg is 14cm longer than the other.

    asked on September 8, 2012
  16. math

    will some one please!!!! please!!! help me I'm doing wacky wordies, only have 3 to do!!! decimal decimal decimal ed ot overs pos'-i'-tive' thanks so much!!

    asked on January 13, 2009
  17. Geography

    what mountain range separates Europe and Asia?

    asked on March 25, 2008
  18. Calculus

    Use implicit differentiation to show dy/dx = [(1-xy)cot(y)]/[x^2 cot(y) + xcsc^2(y)] if xy = ln(x cot y).

    asked on November 13, 2010
  19. College Chemistry

    Plaster of Paris is the compound calcium sulfate hemihydrate, CaSO4*1/2H2O What mass of water is liberated when a 2.763 gram sample is heated to constant mass?

    asked on October 8, 2011
  20. math

    find the slope of the line given by each equation (1) 7x+13y=91 (2) 7-3y=9x

    asked on March 29, 2011
  21. finance

    find the amount for each ordinary annuity if there are payments of $700.00 at the end of each month into an account that pays 10% per annum, compounded monthly

    asked on June 21, 2014
  22. Trigonometry

    Three ships are situated as follows: A is 225 miles west of C while B, due south of C, bears S25*10'E from A. a. How far is B from A? b. How far is B from C? c. what is the bearing of A from B? PLEASE EXPLAIN

    asked on September 9, 2012
  23. Numerical Analysis

    Using the bisection method, Newton’s method, and the secant method, find the largest positive root correct to three decimal places of x3 − 5x + 3 = 0. (All roots are in [−3,+3].)

    asked on February 21, 2011
  24. chemistry

    determine wheter each of the following reactions occur. 2Ni(s) + MgSO4(aq)---> if it doesnt occur explain why

    asked on April 16, 2009
  25. physics 12

    A spacecraft of mass 470 kg rests on the surface of an asteroid of radius 1400 m and mass 2.0*10^12. How much energy must be expended so that the spacecraft may rise to a height of 2800 m above the surface of the asteroid? Thanks.

    asked on October 8, 2011
  26. Physics

    A 0.020 rubber stopper is swung in a horizontal circle by 0.80 cm thread that makes 30.0 revolution every 20 seconds. a.) what is the stopper's speed? T=? v=(2pi(r))/T

    asked on June 14, 2014
  27. Maths

    1) Simplification (trigonometric ratios of allied angles)? Simplify : i) [cos^2 (2x180-A). tan^2 (180+A). sec^2 (180-A)] / [ sin^2 (3x180+ A). cosec^2 (-A). cot^2 (90+A)] ii)[ cos(90+A). sec(270+A). sin(180-A) ] / [ cosec (-A). cos (270-A). tan (180+A) ]

    asked on May 2, 2013
  28. umt

    2. A charge of -3.00 µC is fixed at the center of a compass. Two additional charges are fixed on the circle of the compass (radius = 0.1 m). The charges on the circle are -4.0 µC at the position due north and +5.0 µC at the position due east. What is

    asked on October 26, 2011
  29. 8th grade math

    if you know that AB=0 and A not=to B, what can you say about the equation Ax+By=1? Describe the graph.

    asked on March 21, 2011
  30. Geography

    where is the mouth of the nile river located? Thanks!!1

    asked on December 3, 2007
  31. physics

    What is the self-inductance of an air-core solenoid,1m long and 0.05m in diameter,if it has 1400 turns?(a)5.23mH(b)4.84mH(c)3.63mH(d)2.42mH

    asked on October 1, 2013
  32. physics

    A magnetic field is applied to the plain of a flat coil of copper wire. The time variation of the magnetic flux density is given by Bosinwt.At which of the following values of t is the magnitude of the emf induced in the coil a

    asked on September 28, 2013
  33. high shoool algebra

    Joy is 20 years older than Bob. Three years ago, Joy was 5 times as old as Bob. How old are they now?

    asked on January 28, 2013
  34. Microeconomics

    When is international trade an opportunity for workers?

    asked on June 4, 2011
  35. Pre-Calc

    I am seeking help with this problem Please...Thank you! Find the point on the line y=x+3 in the xy-plane that is closest to the point (3, 2)

    asked on December 7, 2010
  36. geometry

    brain teasers!!! 7 = h. of r. 10 = a. in the b. of r. 4=h. of the a. thanks!!!!

    asked on September 6, 2008
  37. physics

    If two wires P and O each of the same length and same material,are connected in parallel to a battery. The diameter of P is half that of Q. What fraction of the total current passes through P?(a)0.2(b)0.25(c)0.33(d)0.5

    asked on September 24, 2013
  38. algebra

    3/x-5=10/x+2

    asked on January 23, 2011
  39. Pre-Calc

    Can someone show me how to do this please. I am stuck. find a number x such that e^2x – 12e^x =13

    asked on December 9, 2010
  40. statistics

    The participants in a weight-loss class lost the following weights (in pounds) after three weeks of dieting:3,6,0,3,0,0 Assuming that these weights constitute an entire population, find the standard deviation of the population. Round your answer to at

    asked on March 28, 2011
  41. english

    does anyone know where i can find book notes on old jules by mari sandoz?

    asked on September 14, 2009
  42. geometry

    you just got a n ew dirt bike with really advanced four stroke engine that burns fuel efficiently and you wonder what kind of gas mileage you are getting. like most dirt bikes your new machine has no odometer to record the miles traveled.The rear tire's

    asked on March 15, 2009
  43. 6th grade

    1)Bradley is buying ice cream cones. a double scoop cone cost x dollars. A single scoop costs $0.50 less than a double csoop. A triple scoop cone costs twice as much a single scoop cone. Write an expression to represent the cost of 3 double scoop cones and

    asked on March 10, 2009
  44. Geography

    The many islands that stretch from Florida to Venezuela are referred to as the? Thanks!!!!

    asked on April 8, 2008
  45. us history

    who said "we must all hang together, or we shall all hang separtely"? Thank u!

    asked on February 4, 2008
  46. algebra

    peter is twice as old as paul was when peter was as old as paul is now. the combined ages of peter and paul is is 56 years. how old are peter and paul now?

    asked on March 17, 2017
  47. math

    think of a number. Triple it. Add 100. double the result. Add 100. divide the result by 4. subtract one a half time the original number. What is the result?

    asked on March 3, 2017
  48. algebra

    -1 -2 1+x = 72x 1 2 1/1+1/x =1/72x 2 1 2 2 (72x /1)1/1+1/x =1/72x (72x/1) 2 72x +72x=1 got stuck here

    asked on April 9, 2016
  49. science

    A solutuion is prepared by adding 40 grams of NaC1 to 100 grams of water at 80 degrees Celcius. Describe this solution.

    asked on February 3, 2014
  50. physics

    A proton with speed v perpendicular to a magnetic field B is experiencing a force F.If the speed of the proton is doubled,the new force is (a)F/2(b)F(c)2F(d)4F

    asked on September 22, 2013
  51. maths

    If two dice are toced what is the probility of having a sum of 5 as the outcome(a)1/9(b)1/6(c)1/8

    asked on September 10, 2013
  52. Trigonometry

    Triangle ABC is a right triangle with right angle at C. CD is perpendicular to AB. BC=4 and CD=1. find the area of the triangle ABC.

    asked on September 8, 2012
  53. linear math

    8x + 6y = -15

    asked on January 10, 2012
  54. physics 12

    If the Earth has a mass of 5.98*10^24 kg and orbits the Sun at a radius of 1.43*10^11 meters. Find the mass of the Sun. Thank you.

    asked on October 7, 2011
  55. chemistry

    A NASA satellite showed that in 2003 the ozone hole was much larger than it was in 2002. The 2003 hole measured 1.04 x 107 mi2 in diameter, while the diameter of the 2002 hole was 6.9 x 106 mi2 Calculate the difference in size between the two holes in

    asked on June 26, 2011
  56. Finance

    Having previously identified the location of its Greenfield investment, Acme, a multi-billion public MNE that is incorporated in the U.S., must next obtain external financing for its proposed overseas production facility. It has been estimated that the

    asked on May 27, 2011
  57. Pre-Calc

    I am stuck solving this problem, any help please..Many thanks find all numbers x that satisfy the given equation ln(2x) ------- =2 ln(3x)

    asked on December 9, 2010
  58. advanced algebra

    Q. x^-4/5=16 What is x Q. Suppose 0

    asked on April 8, 2010
  59. math

    Prove that the limit as n approaches infinity of ((n!)^2)/(2n)! is 0. I'm thinking that you have to use the squeeze theorem, but I'm not quite sure how. help please?

    asked on April 6, 2010
  60. english

    is there a website for summary notes for old jules by mari sandoz?

    asked on September 14, 2009
  61. 8th grade

    Can you unscramble these letters:afsedrniru?

    asked on October 15, 2008
  62. wr

    cross word!! (4) letter word for too, too (3) letter word for pen pal Thank you so much

    asked on December 14, 2007
  63. Algebra 1

    Insert grouping symbols in the expression 5 x 8 - 6 division sign 2 You mix them around in any order to get 17? I guss you can use the + sign example 5 x (2+8-4) divided by 2 = 15

    asked on August 24, 2007
  64. health

    identify major factors that influence fitness potential. Thanks!! roy/cindy genetics, health, age, are some that come to mind. Do you not have a class text book?

    asked on November 14, 2006
  65. calculus

    Find the definate integal (upper limit 1, lower limit 0) (7-4x)^2dx

    asked on October 10, 2013
  66. science

    (1) what measurements and what calculation would you need to make in order to determine the density of a rectangular wooden block? (2) a student announced that she had made a sample of a new material that had a density of 0.85g/cm3. from the inforation

    asked on March 29, 2011
  67. science

    (1) what measurements and what calculation would you need to make in order to determine the density of a rectangular wooden block? (2)

    asked on March 29, 2011
  68. Calculus

    Use the given derivative to find all critical points of 'f' and at each critical point determine whether a relative maximum, relative minimum, or neither occurs. Assume that 'f' is continuous everywhere. f' (x) = (1-2x)/ ∛(x+3)

    asked on November 29, 2010
  69. calculus

    Prove that the limit as n approaches infinity of ((n!)^2)/(2n)! is 0. I'm thinking that you have to use the squeeze theorem, but I'm not quite sure how. help please?

    asked on April 6, 2010
  70. math

    amy drove her car the same distance in six hours that juan drove his car in 5 1/2 hours. find the speed (rate) of amy's car, given that she drove 5 mi/h slower than juan.

    asked on September 16, 2009
  71. math

    Now the largest: Perimerter sum 4s+2w+2l 150>4s+2*3s + 2*(15-5s) solve for s, then w, then l.

    asked on September 14, 2009
  72. Math

    a rectangle is 3 times as wide as a square. the rectangle's length is 15 ft shorter than 5 times the square's length. Given that the sum of the two perimeters must be less than 150 ft, find the set of all possible lengths for the rectangle

    asked on September 14, 2009
  73. Math

    find three consecutive even intergers for which the sum of the first two integers is greater than 9 more than the third integer, and the sum of the first and third integers is less than 17 more than the second integer

    asked on September 14, 2009
  74. english

    could anyone please tell me how i can find out what some ancient rome words mean? thanks!!

    asked on September 13, 2008
  75. geography

    To which continent does Israel belong? Thanks!

    asked on November 26, 2007
  76. geography

    The largest island in the world, located near Canada, is called? Thanks!

    asked on November 26, 2007
  77. AIU

    WHAT IS A REGIONAL TRADE BLOC? A regional trade bloc is a group of countries that agrees to buy each others products without imposing tariffs.

    asked on April 9, 2007
  78. Physics

    Ximena stands near the edge of a cliff 20 m above her friend Javier. If she throws a sandwich to Javier at an angle = 30 below the horizontal and it reaches him in 1.0 s, ignoring air resistance, what was the magnitude of the sandwich's initial velocity?

    asked on September 25, 2016
  79. algebra

    Thank you Reiny, we typed it in incorrectly, but believe we have solved it. Will post later.

    asked on April 9, 2016
  80. math

    What is the sum of all values of x that satisfy the equation (x2 -5x+5)^(x2 +4x-60) =1? Hint: There are three cases to consider I think I figured out 2 of the cases. The first one being x2 +4x-60=0 while x2 -5x+5=whatever. The second is x2 -5x+5=1 and x2

    asked on January 3, 2016
  81. calcus

    int sec u du

    asked on October 8, 2013
  82. calcus

    int tan^3xsec^3x dx

    asked on October 8, 2013
  83. calcus

    int cosxsinx dx

    asked on October 8, 2013
  84. maths

    If four coins are flipped in succession,then the number of possible outcomes is(a)8(b)12(c)16(d)14

    asked on September 22, 2013
  85. calculus

    Find dy/dx, if y= (sinx)^-1

    asked on September 17, 2013
  86. physics

    An electrical source with internal reistance r is used to operate a lamp of resistance R. What fraction of the total power is delivered to the lamp?(a)R+r/R(b)R-r/R (c)R/R+r (d)R/r

    asked on September 15, 2013
  87. Math

    Factorise : 1 + a + b + c + ab + bc + ca + abc

    asked on June 5, 2013
  88. English

    (mean,means)Fluoridated water.........fewer Americans are toothless today. (visit,visits)Grandparents and children alike..........their dentist for regular check ups. (love,loves)Dentists.......the fact that there is more awareness about dental hygeiene.

    asked on May 29, 2013
  89. math

    what is the formula for working out open cuboid.

    asked on March 4, 2013
  90. math

    what is the formula for working out open cuboid.

    asked on March 4, 2013
  91. math

    A pump brings underground water up to ground level. The water flow is measured in litres per minute.The pump fills an 18 litre bucket in 7 seconds.what is the speed of the pump flow

    asked on February 14, 2013
  92. Trigonometry

    Two sides of a right triangle are 8, 15 and 17 units. if each side is doubled, how many sqare units will the area of the new triangle be?

    asked on September 8, 2012
  93. geometry

    4X Over 30

    asked on January 18, 2012
  94. algebra

    10x.12.25y _______________ 2z.30x.20y help

    asked on September 13, 2011
  95. Chemistry

    I need to calculate this and I am to asume that all numbers are measurements. I am working with signifigant figures. .6260-.015

    asked on August 24, 2011
  96. algebra

    11b,6=b-5

    asked on January 23, 2011
  97. math

    3 10 ____ = ____ x-5 x+2

    asked on January 23, 2011
  98. Calculus

    Use the given derivative to find all critical points of 'f' and at each critical point determine whether a relative maximum, relative minimum, or neither occurs. Assume that 'f' is continuous everywhere. f' (x) = (1-2x)/ ∛(x+3) ∛(x+3)in words is the

    asked on November 29, 2010
  99. social studies

    how do reform leaders today try wo win support for their causes? thanks

    asked on March 30, 2010
  100. algebra

    simplify and write with only positive exponents 1. x to yhe negitive six power times x to the fifth power 2. y to the negitive twelth power divided by 7y to the fifth power

    asked on March 24, 2010

Pages

  1. 1
  2. 2